README

This reverts commit 8efdf7b6fe.

.clang-format

@@ -1,27 +1,38 @@
+---
 Language:        Cpp
 # BasedOnStyle:  LLVM
-AccessModifierOffset: -2
+AccessModifierOffset: -4
 AlignAfterOpenBracket: Align
-AlignConsecutiveAssignments: false
+AlignArrayOfStructures: None
-AlignConsecutiveDeclarations: false
+AlignConsecutiveMacros: None
+AlignConsecutiveAssignments: None
+AlignConsecutiveBitFields: None
+AlignConsecutiveDeclarations: None
 AlignEscapedNewlines: Right
-AlignOperands:   true
+AlignOperands:   Align
 AlignTrailingComments: true
+AllowAllArgumentsOnNextLine: true
+AllowAllConstructorInitializersOnNextLine: true
 AllowAllParametersOfDeclarationOnNextLine: true
-AllowShortBlocksOnASingleLine: false
+AllowShortEnumsOnASingleLine: true
+AllowShortBlocksOnASingleLine: Never
 AllowShortCaseLabelsOnASingleLine: false
 AllowShortFunctionsOnASingleLine: All
-AllowShortIfStatementsOnASingleLine: false
+AllowShortLambdasOnASingleLine: All
+AllowShortIfStatementsOnASingleLine: Never
 AllowShortLoopsOnASingleLine: false
 AlwaysBreakAfterDefinitionReturnType: None
 AlwaysBreakAfterReturnType: None
 AlwaysBreakBeforeMultilineStrings: false
-AlwaysBreakTemplateDeclarations: false
+AlwaysBreakTemplateDeclarations: MultiLine
+AttributeMacros:
+  - __capability
 BinPackArguments: true
 BinPackParameters: true
 BraceWrapping:
-  AfterClass:      true
+  AfterCaseLabel:  false
-  AfterControlStatement: false
+  AfterClass:      false
+  AfterControlStatement: Never
   AfterEnum:       false
   AfterFunction:   false
   AfterNamespace:  false
@@ -31,13 +42,21 @@ BraceWrapping:
   AfterExternBlock: false
   BeforeCatch:     false
   BeforeElse:      false
+  BeforeLambdaBody: false
+  BeforeWhile:     false
   IndentBraces:    false
   SplitEmptyFunction: true
   SplitEmptyRecord: true
   SplitEmptyNamespace: true
 BreakBeforeBinaryOperators: None
-BreakBeforeBraces: Linux
+BreakBeforeConceptDeclarations: true
+BreakBeforeBraces: Custom
+BraceWrapping:
+  AfterClass: true
+  AfterFunction: true
+  AfterNamespace: true
 BreakBeforeInheritanceComma: false
+BreakInheritanceList: BeforeColon
 BreakBeforeTernaryOperators: true
 BreakConstructorInitializersBeforeComma: false
 BreakConstructorInitializers: BeforeColon
@@ -50,35 +69,56 @@ ConstructorInitializerAllOnOneLineOrOnePerLine: false
 ConstructorInitializerIndentWidth: 4
 ContinuationIndentWidth: 4
 Cpp11BracedListStyle: true
+DeriveLineEnding: true
 DerivePointerAlignment: false
 DisableFormat:   false
+EmptyLineAfterAccessModifier: Never
+EmptyLineBeforeAccessModifier: LogicalBlock
 ExperimentalAutoDetectBinPacking: false
 FixNamespaceComments: true
 ForEachMacros:
   - foreach
   - Q_FOREACH
   - BOOST_FOREACH
+IfMacros:
+  - KJ_IF_MAYBE
 IncludeBlocks:   Preserve
 IncludeCategories:
   - Regex:           '^"(llvm|llvm-c|clang|clang-c)/'
     Priority:        2
+    SortPriority:    0
+    CaseSensitive:   false
   - Regex:           '^(<|"(gtest|gmock|isl|json)/)'
     Priority:        3
+    SortPriority:    0
+    CaseSensitive:   false
   - Regex:           '.*'
     Priority:        1
+    SortPriority:    0
+    CaseSensitive:   false
 IncludeIsMainRegex: '(Test)?$'
+IncludeIsMainSourceRegex: ''
+IndentAccessModifiers: false
 IndentCaseLabels: false
+IndentCaseBlocks: false
+IndentGotoLabels: true
 IndentPPDirectives: None
+IndentExternBlock: AfterExternBlock
+IndentRequires:  false
 IndentWidth:     4
 IndentWrappedFunctionNames: false
+InsertTrailingCommas: None
 JavaScriptQuotes: Leave
 JavaScriptWrapImports: true
 KeepEmptyLinesAtTheStartOfBlocks: true
+LambdaBodyIndentation: Signature
 MacroBlockBegin: ''
 MacroBlockEnd:   ''
 MaxEmptyLinesToKeep: 1
 NamespaceIndentation: None
+ObjCBinPackProtocolList: Auto
 ObjCBlockIndentWidth: 2
+ObjCBreakBeforeNestedBlockParam: true
 ObjCSpaceAfterProperty: false
 ObjCSpaceBeforeProtocolList: true
 PenaltyBreakAssignment: 2
@@ -86,24 +126,57 @@ PenaltyBreakBeforeFirstCallParameter: 19
 PenaltyBreakComment: 300
 PenaltyBreakFirstLessLess: 120
 PenaltyBreakString: 1000
+PenaltyBreakTemplateDeclaration: 10
 PenaltyExcessCharacter: 1000000
 PenaltyReturnTypeOnItsOwnLine: 60
-PointerAlignment: Left
+PenaltyIndentedWhitespace: 0
+PointerAlignment: Right
+PPIndentWidth:   -1
+ReferenceAlignment: Pointer
 ReflowComments:  true
-SortIncludes:    true
+ShortNamespaceLines: 1
+SortIncludes:    CaseSensitive
+SortJavaStaticImport: Before
 SortUsingDeclarations: true
 SpaceAfterCStyleCast: false
+SpaceAfterLogicalNot: false
 SpaceAfterTemplateKeyword: true
 SpaceBeforeAssignmentOperators: true
+SpaceBeforeCaseColon: false
+SpaceBeforeCpp11BracedList: false
+SpaceBeforeCtorInitializerColon: true
+SpaceBeforeInheritanceColon: true
 SpaceBeforeParens: ControlStatements
+SpaceAroundPointerQualifiers: Default
+SpaceBeforeRangeBasedForLoopColon: true
+SpaceInEmptyBlock: false
 SpaceInEmptyParentheses: false
 SpacesBeforeTrailingComments: 1
-SpacesInAngles:  false
+SpacesInAngles:  Never
+SpacesInConditionalStatement: false
 SpacesInContainerLiterals: true
 SpacesInCStyleCastParentheses: false
+SpacesInLineCommentPrefix:
+  Minimum:         1
+  Maximum:         -1
 SpacesInParentheses: false
 SpacesInSquareBrackets: false
-Standard:        Auto
+SpaceBeforeSquareBrackets: false
+BitFieldColonSpacing: Both
+Standard:        Latest
+StatementAttributeLikeMacros:
+  - Q_EMIT
+StatementMacros:
+  - Q_UNUSED
+  - QT_REQUIRE_VERSION
 TabWidth:        8
+UseCRLF:         false
 UseTab:          Never
+WhitespaceSensitiveMacros:
+  - STRINGIZE
+  - PP_STRINGIZE
+  - BOOST_PP_STRINGIZE
+  - NS_SWIFT_NAME
+  - CF_SWIFT_NAME
+...
 

.gitignore

@@ -1 +1,4 @@
 build
+.vscode/ipch/*
+.kdev4
+.cache

.gitmodules

@@ -1,3 +1,6 @@
-[submodule "3rdparty/nlohmann_json"]
+[submodule "subprojects/nlohmann_json"]
-	path = 3rdparty/nlohmann_json
+	path = subprojects/nlohmann_json
 	url = https://github.com/nlohmann/json.git
+[submodule "subprojects/singleapplication"]
+	path = subprojects/singleapplication/singleapplication.git
+	url = https://github.com/itay-grudev/SingleApplication.git

.vscode/launch.json

@@ -21,7 +21,8 @@
                     "text": "-enable-pretty-printing",
                     "ignoreFailures": true
                 }
-            ]
+            ],
+            "visualizerFile": "/home/brodbemn/.config/Code - OSS/User/workspaceStorage/d64ec049841ecb3d43e402bb3c167cb5/tonka3000.qtvsctools/qt.natvis.xml"
         }
     ]
 }

.vscode/settings.json

@@ -65,9 +65,47 @@
         "condition_variable": "cpp",
         "mutex": "cpp",
         "hash_map": "cpp",
-        "future": "cpp"
+        "future": "cpp",
+        "bit": "cpp",
+        "compare": "cpp",
+        "concepts": "cpp",
+        "forward_list": "cpp",
+        "map": "cpp",
+        "set": "cpp",
+        "string": "cpp",
+        "unordered_set": "cpp",
+        "iterator": "cpp",
+        "memory_resource": "cpp",
+        "random": "cpp",
+        "semaphore": "cpp",
+        "stop_token": "cpp",
+        "__bit_reference": "cpp",
+        "__bits": "cpp",
+        "__config": "cpp",
+        "__debug": "cpp",
+        "__errc": "cpp",
+        "__hash_table": "cpp",
+        "__locale": "cpp",
+        "__mutex_base": "cpp",
+        "__node_handle": "cpp",
+        "__split_buffer": "cpp",
+        "__threading_support": "cpp",
+        "__tree": "cpp",
+        "__tuple": "cpp",
+        "__verbose_abort": "cpp",
+        "format": "cpp",
+        "ios": "cpp",
+        "locale": "cpp"
     },
     "C_Cpp.clang_format_path": "/usr/bin/clang-format",
     "cmake.configureOnOpen": true,
-    "C_Cpp.configurationWarnings": "Disabled"
+    "C_Cpp.configurationWarnings": "Disabled",
+    "files.watcherExclude": {
+        "**/.git/objects/**": true,
+        "**/.git/subtree-cache/**": true,
+        "**/node_modules/*/**": true,
+        "**/.hg/store/**": true,
+        ".flatpak/**": true,
+        "_build/**": true
+    }
 }

3rdparty/nlohmann_json

@@ -1 +0,0 @@
-Subproject commit f1768a540a7b7c5cc30cdcd6be9e9ef91083719b

CMakeLists.txt

@@ -1,10 +1,10 @@
-cmake_minimum_required(VERSION 3.8)
+cmake_minimum_required(VERSION 3.10)
 
-project(kima2 VERSION 0.13.1)
+project(kima2 VERSION 1.8.3)
 
-set(CMAKE_MODULE_PATH "${CMAKE_HOME_DIRECTORY}/cmake" ${CMAKE_MODULE_PATH})
+set(CMAKE_MODULE_PATH "${CMAKE_HOME_DIRECTORY}/cmake")
 
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 #include(InstallRequiredSystemLibraries)
@@ -12,10 +12,12 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
 if(MSVC)
   add_compile_options(/W4 /WX)
 else()
-  add_compile_options(-Wall -Wextra -pedantic -Woverloaded-virtual -Wredundant-decls -Wshadow)
+  #add_compile_options(-Wall -Wextra -pedantic -Woverloaded-virtual -Wredundant-decls -Wshadow)
+  add_compile_options(-Wall -Wextra)
 endif()
 
 configure_file(config.h.in ${PROJECT_BINARY_DIR}/config.h)
+configure_file(de.rustysoft.kima2.metainfo.xml.in ${PROJECT_BINARY_DIR}/de.rustysoft.kima2.metainfo.xml)
 
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
@@ -27,14 +29,14 @@ if(KIMA2_USE_EXTERNAL_JSON)
   find_package(nlohmann_json REQUIRED)
 endif()
 
-add_subdirectory(3rdparty)
+add_subdirectory(subprojects)
 add_subdirectory(src)
 
-if(NOT CMAKE_BUILD_TYPE OR CMAKE_BUILD_TYPE MATCHES Debug)
+#if(NOT CMAKE_BUILD_TYPE OR CMAKE_BUILD_TYPE MATCHES Debug)
-  include(CTest)
+#  include(CTest)
-  enable_testing()
+#  enable_testing()
-  add_subdirectory(test)
+#  add_subdirectory(test)
-endif()
+#endif()
 
 
 # CPack
@@ -78,6 +80,8 @@ else(WIN32 AND NOT UNIX)
 	  DESTINATION share/${PROJECT_NAME})
   install(FILES "${CMAKE_SOURCE_DIR}/misc/kima2.svg"
         DESTINATION share/icons/hicolor/scalable/apps)
+  install(FILES de.rustysoft.kima2.metainfo.xml
+	  DESTINATION share/metainfo)
 endif (WIN32 AND NOT UNIX)
 
 if( MINGW )
@@ -86,18 +90,19 @@ if( MINGW )
     set( CMAKE_INSTALL_SYSTEM_RUNTIME_LIBS
     ${MINGW_PATH}/libstdc++-6.dll
     ${MINGW_PATH}/libgcc_s_seh-1.dll
-    ${MINGW_PATH}/Qt5Core.dll
+    ${MINGW_PATH}/Qt6Core.dll
-    ${MINGW_PATH}/Qt5Gui.dll
+    ${MINGW_PATH}/Qt6Gui.dll
-    ${MINGW_PATH}/Qt5Widgets.dll
+    ${MINGW_PATH}/Qt6Widgets.dll
-    ${MINGW_PATH}/Qt5PrintSupport.dll
+    ${MINGW_PATH}/Qt6PrintSupport.dll
+    ${MINGW_PATH}/Qt6Network.dll
     ${MINGW_PATH}/libwinpthread-1.dll
     ${MINGW_PATH}/libsqlite3-0.dll
     ${MINGW_PATH}/libusb-1.0.dll
-    ${MINGW_PATH}/libxlnt.dll
+    ${MINGW_PATH}/libicuuc75.dll
-    ${MINGW_PATH}/libicuuc62.dll
+    ${MINGW_PATH}/libicuin75.dll
-    ${MINGW_PATH}/libicuin62.dll
+    ${MINGW_PATH}/libicudt75.dll
-    ${MINGW_PATH}/libicudt62.dll
     ${MINGW_PATH}/libpcre2-16-0.dll
+    ${MINGW_PATH}/libpcre2-8-0.dll
     ${MINGW_PATH}/zlib1.dll
     ${MINGW_PATH}/libharfbuzz-0.dll
     ${MINGW_PATH}/libpng16-16.dll
@@ -107,20 +112,26 @@ if( MINGW )
     ${MINGW_PATH}/libbz2-1.dll
     ${MINGW_PATH}/libintl-8.dll
     ${MINGW_PATH}/libpcre-1.dll
+    ${MINGW_PATH}/libdouble-conversion.dll
+    ${MINGW_PATH}/libzstd.dll
+    ${MINGW_PATH}/libmd4c.dll
+    ${MINGW_PATH}/libbrotlicommon.dll
+    ${MINGW_PATH}/libbrotlidec.dll
+    #${MINGW_PATH}/libfmt.dll
+    ${MINGW_PATH}/libb2-1.dll
     ${MINGW_PATH}/libiconv-2.dll)
-    install(FILES ${MINGW_PATH}/../share/qt5/plugins/platforms/qwindows.dll
+    install(FILES ${MINGW_PATH}/../share/qt6/plugins/platforms/qwindows.dll
-      ${MINGW_PATH}/../share/qt5/plugins/platforms/qminimal.dll
+      ${MINGW_PATH}/../share/qt6/plugins/platforms/qminimal.dll
       DESTINATION bin/platforms)
-    install(FILES ${MINGW_PATH}/../share/qt5/plugins/printsupport/windowsprintersupport.dll
+    #install(FILES ${MINGW_PATH}/../share/qt6/plugins/printsupport/windowsprintersupport.dll
-      DESTINATION bin/printsupport)
+    #  DESTINATION bin/printsupport)
-    install(FILES ${MINGW_PATH}/../share/qt5/translations/qtbase_de.qm
+    install(FILES ${MINGW_PATH}/../share/qt6/translations/qtbase_de.qm
-      ${MINGW_PATH}/../share/qt5/translations/qt_de.qm
+      ${MINGW_PATH}/../share/qt6/translations/qt_de.qm
-      ${MINGW_PATH}/../share/qt5/translations/qt_help_de.qm
+      ${MINGW_PATH}/../share/qt6/translations/qt_help_de.qm
-      ${MINGW_PATH}/../share/qt5/translations/qtmultimedia_de.qm
+      ${MINGW_PATH}/../share/qt6/translations/qtmultimedia_de.qm
-      ${MINGW_PATH}/../share/qt5/translations/qtquick1_de.qm
+      DESTINATION bin/share/qt6/translations)
-      ${MINGW_PATH}/../share/qt5/translations/qtscript_de.qm
+    install(FILES ${MINGW_PATH}/../share/qt6/plugins/styles/qmodernwindowsstyle.dll
-      ${MINGW_PATH}/../share/qt5/translations/qtxmlpatterns_de.qm
+      DESTINATION bin/styles)
-      DESTINATION bin/translations)
 endif( MINGW )
 
 include(InstallRequiredSystemLibraries)

LICENSE

@@ -1,4 +1,4 @@
-Copyright © 2018 Martin Brodbeck
+Copyright © 2018-2024 Martin Brodbeck
 
 Hiermit wird unentgeltlich jeder Person, die eine Kopie der Software und der
 zugehörigen Dokumentationen (die "Software") erhält, die Erlaubnis erteilt,

README.md

@@ -13,19 +13,16 @@ Verkaufsdaten nach dem Verkaufsende auszutauschen.
 Ebenso können über einen ESC/POS-Drucker Quittungen ausgestellt werden.
 
 ## Installation
-Auf [rustysoft.de](https://www.rustysoft.de/?01_kima2) werden verschiedene Installationspakete (Arch Linux,
+Auf [rustysoft.de](https://www.rustysoft.de/software/kima2/) werden die Installationsmöglichkeiten (Flatpak, Windows-Installer) erläutert. Bitte die Hinweise dort beachten.
-Ubuntu, Windows) angeboten. Bitte die Hinweise dort beachten.
 
-### Selbst compilieren
+## Selbst compilieren
 KIMA2 benötigt folgende Libraries:
-* Qt5
+* Qt 6
-* boost >= 1.62
+* boost >= 1.80
 * libusb-1.0
-* xlnt >= 1.3.0
 * nlohmann-json (als 3rdparty submodule vorhanden)
 
-Da Features aus C++17 verwendet werden sowie std::filesystem, sollte als Compiler mindestens
+Da Features aus C++20 sowie von neueren Compilern verwendet werden, sollte als Compiler mindestens GCC 14 verwendet werden.
-GCC 8 verwendet werden.
 
 Die Installationsschritte unter Linux sind wie folgt:
 ```

de.rustysoft.kima2.metainfo.xml.in

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<component type="desktop-application">
+  <id>de.rustysoft.kima2</id>
+  
+  <name>KIMA2</name>
+  <summary>A small cash point program for children’s stuff markets</summary>
+  
+  <metadata_license>MIT</metadata_license>
+  <project_license>GPL-3.0-or-later</project_license>
+
+  <releases>
+    <release version="@PROJECT_VERSION@" type="stable" date="2024-01-23" />
+  </releases>
+  
+  <description>
+    <p>
+      A small cash point program for children's stuff markets. German language only.
+    </p>
+  </description>
+  
+  <launchable type="desktop-id">de.rustysoft.kima2.desktop</launchable>
+  <screenshots>
+    <screenshot type="default">
+      <image>https://rustysoft.de/images/software/kima2/screenshot.png</image>
+    </screenshot>
+  </screenshots>
+</component>

kima2.kdev4

@@ -0,0 +1,4 @@
+[Project]
+CreatedFrom=CMakeLists.txt
+Manager=KDevCMakeManager
+Name=kima2

meson.build

@@ -0,0 +1,33 @@
+project('kima2', 'cpp', default_options : ['cpp_std=c++20'], version : '1.8.0')
+
+conf_data = configuration_data()
+conf_data.set('PROJECT_VERSION', '"' + meson.project_version() + '"')
+configure_file(output : 'config.h',
+               configuration : conf_data)
+configuration_inc = include_directories('.')
+               
+#csv = cmake.subproject('csv-parser')
+#csv_lib = csv.dependency('csv')
+
+nlohmann_lib = dependency('nlohmann_json', version : '>=3.5.0', required : false)
+
+if not nlohmann_lib.found()
+  nlohmann_inc = include_directories('subprojects/nlohmann_json/single_include')
+  nlohmann_lib = declare_dependency(include_directories : nlohmann_inc)
+endif
+
+csv_inc = include_directories('subprojects/csv-parser/single_include')
+csv_dep = declare_dependency(include_directories : csv_inc)
+
+singleapp_proj = subproject('singleapplication')
+singleapp_lib = singleapp_proj.get_variable('singleapp_lib')
+singleapp_dep = singleapp_proj.get_variable('singleapp_dep')
+
+subdir('src')
+
+if build_machine.system() == 'linux'
+  install_data('misc/kima2.svg', install_dir : get_option('datadir') / 'icons/hicolor/scalable/apps')
+  install_data('misc/kima2.desktop', install_dir : get_option('datadir') / 'applications')
+  install_data('manual/Benutzerhandbuch.pdf', install_dir : get_option('datadir') / 'kima2')
+endif
+

misc/PKGBUILD

@@ -1,29 +1,35 @@
 # Maintainer: Martin Brodbeck <martin at brodbeck-online dot de>
 pkgname=kima2
-pkgver=0.13.0
+pkgver=1.7.1
 pkgrel=1
 pkgdesc="A small cash point program for children's things markets (German only)"
 arch=('i686' 'x86_64')
-url="http://www.rustysoft.de/?01_kima2"
+url="http://www.rustysoft.de/software/kima2"
 license=('custom')
-depends=('glibc' 'libusb' 'qt5-base' 'sqlite3' 'xlnt')
+depends=('glibc' 'libusb' 'qt6-base' 'sqlite3')
 makedepends=('boost>=1.62')
-source=($pkgname-$pkgver.tar.gz)
+source=(git+https://git.rustysoft.de/martin/kima2)
-md5sums=('')
+sha256sums=('SKIP')
 
 build() {
-  if [ ! -d $pkgname/build ]; then
+  cd $pkgname
-    mkdir $pkgname/build
-  fi
-  cd $pkgname/build
 
-  cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=$pkgdir/usr -DKIMA2_USE_EXTERNAL_JSON=ON ..
+  git checkout v$pkgver
+  git submodule init
+  git submodule update
+
+  if [ -d build ]; then
+    rm -rf build
+  fi
+  mkdir build && cd build
+
+  cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr -DKIMA2_USE_EXTERNAL_JSON=OFF ..
   make
 }
 
 package() {
   cd $pkgname/build
-  make install
+  make DESTDIR="$pkgdir" install
   cd ..
   install -D -m644 LICENSE "${pkgdir}/usr/share/licenses/${pkgname}/LICENSE"
 }

misc/kima2.desktop

@@ -3,8 +3,8 @@ Type=Application
 Name=KIMA2
 GenericName=Cash Point Program
 GenericName[de]=Kassenprogramm
-Comment=A small cash point program
+Comment=A small cash point program for children's stuff markets
-Comment[de]=Ein kleines Kassenprogramm
+Comment[de]=Ein kleines Kassenprogramm für Kindersachenmärkte
 Exec=kima2
 Icon=kima2
 Categories=Office;

misc/kima2.spec

@@ -0,0 +1,43 @@
+Name: kima2
+Version: 1.6.0
+Release: 1%{?dist}
+Summary: A small cash point program for children's things markets
+License: custom
+
+Source0: %{name}-%{version}.tar.gz
+
+BuildRequires: meson
+BuildRequires: gcc-c++
+#BuildRequires: pkgconfig(nlohmann_json)
+BuildRequires: boost-date-time
+BuildRequires: sqlite-devel
+BuildRequires: libusb-devel
+BuildRequires: qt5-qtdeclarative-devel
+#BuildRequires: pkgconfig(pthreads)
+
+%description
+
+%prep
+%autosetup
+
+%build
+%meson
+%meson_build
+
+%install
+%meson_install
+
+%check
+%meson_test
+
+%files
+%{_bindir}/kima2
+%{_datadir}/applications/kima2.desktop
+%{_datadir}/icons/hicolor/scalable/apps/kima2.svg
+%{_datadir}/kima2/Benutzerhandbuch.pdf
+
+
+%changelog
+* Fri Oct 11 2019 Martin Brodbeck <infor@rustysoft.de> - dev builds
+- 
+

src/core/CMakeLists.txt

@@ -1,34 +1,34 @@
 set(Boost_USE_STATIC_LIBS ON)
 
-find_package(Boost 1.62 COMPONENTS date_time REQUIRED)
+find_package(Boost 1.78 REQUIRED)
 find_package(SQLite3 REQUIRED)
 
-if (MINGW)
+# Because csv-parser needs threads:
-  find_package(XLNT REQUIRED STATIC)
+
-else (MINGW)
+find_package(fmt)
-  find_package(PkgConfig REQUIRED)
-  pkg_check_modules(XLNT REQUIRED xlnt>=1.3)
-endif (MINGW)
 
 set(CORE_SOURCES
     database.cpp
     entity.cpp
+    entityint.cpp
+    entityuuid.cpp
     seller.cpp
     article.cpp
     sale.cpp
     marketplace.cpp
-    excelreader.cpp
+    csvreader.cpp
     jsonutil.cpp
     utils.cpp
 )
 
-add_library(core STATIC ${CORE_SOURCES})
 
+add_library(core STATIC ${CORE_SOURCES})
+#target_include_directories(core PRIVATE ${PROJECT_SOURCE_DIR}/subprojects/csv-parser/single_include)
 if (WIN32)
-    target_link_libraries(core PRIVATE printer Boost::boost Boost::date_time sqlite3 nlohmann_json::nlohmann_json ${XLNT_LIBRARY})
+    target_link_libraries(core PRIVATE sqlite3 nlohmann_json::nlohmann_json)
     target_link_libraries(core PRIVATE bcrypt)
 else()
-	target_link_libraries(core PRIVATE printer Boost::boost Boost::date_time sqlite3 nlohmann_json::nlohmann_json ${XLNT_LIBRARIES})
+	target_link_libraries(core PRIVATE sqlite3 nlohmann_json::nlohmann_json)
 endif()
 
-target_include_directories(core PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
+target_include_directories(core PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/..)

src/core/article.cpp

@@ -1,44 +1,38 @@
 #include "article.h"
+#include "seller.h"
 #include "utils.h"
 
 #include <iomanip>
 #include <sstream>
 
-// Article::Article() : Entity() {}
+Article::Article(int price) : m_price(price) {}
 
-Article::Article(int price) : price_(price) {}
+void Article::setArticleNo(int articleNo) { m_articleNo = articleNo; }
 
-// Article::Article(std::shared_ptr<Seller> sellerPtr) : Entity() { sellerPtr_ = sellerPtr; }
+void Article::setPrice(int price) { m_price = price; }
 
-void Article::setArticleNo(int articleNo) { articleNo_ = articleNo; }
+void Article::setDescription(const std::string &description) { m_description = description; }
 
-void Article::setPrice(int price) { price_ = price; }
+void Article::setSale(Sale *salePtr) { m_salePtr = salePtr; }
 
-void Article::setDescription(const std::string& description) { description_ = description; }
+void Article::setSeller(Seller *sellerPtr) { m_sellerPtr = sellerPtr; }
 
-void Article::setSale(Sale* salePtr) { salePtr_ = salePtr; }
+bool Article::isSold() { return m_salePtr ? true : false; }
 
-void Article::setSeller(Seller* sellerPtr) { sellerPtr_ = sellerPtr; }
+std::string Article::getDescription() { return m_description; }
 
-bool Article::isSold() { return salePtr_ ? true : false; }
+Seller *Article::getSeller() { return m_sellerPtr; }
+Sale *Article::getSale() { return m_salePtr; }
 
-std::string Article::getDescription() { return description_; }
+int Article::getPrice() const { return m_price; }
 
-Seller* Article::getSeller() { return sellerPtr_; }
+std::string Article::getPriceAsString() const { return formatCentAsEuroString(m_price); }
-Sale* Article::getSale() { return salePtr_; }
 
-int Article::getPrice() const { return price_; }
+int Article::getArticleNo() const { return m_articleNo; }
-
-std::string Article::getPriceAsString() const
-{
-    return formatCentAsEuroString(price_);
-}
-
-int Article::getArticleNo() const { return articleNo_; }
 
 std::string Article::getCompleteArticleNo() const
 {
     std::stringstream artNoStream;
-    artNoStream << sourceNo_ << "K" << std::setfill('0') << std::setw(5) << articleNo_;
+    artNoStream << m_sourceNo << "K" << std::setfill('0') << std::setw(5) << m_articleNo;
     return artNoStream.str();
 }

src/core/article.h

@@ -1,9 +1,7 @@
 #ifndef ARTICLE_H
 #define ARTICLE_H
 
-#include "entity.h"
+#include "entityuuid.h"
-//#include "sale.h"
-//#include "seller.h"
 
 #include <memory>
 #include <string>
@@ -11,34 +9,35 @@
 class Seller;
 class Sale;
 
-class Article : public Entity
+class Article : public EntityUuid
 {
-  public:
+public:
     Article() = default;
     Article(int price);
-    //virtual ~Article() = default;
+    Article(const Article &) = delete;
+    virtual ~Article() = default;
 
     void setArticleNo(int articleNo);
     void setPrice(int price);
-    void setDescription(const std::string& description);
+    void setDescription(const std::string &description);
     bool isSold();
-    void setSale(Sale* salePtr);
+    void setSale(Sale *salePtr);
-    void setSeller(Seller* sellerPtr);
+    void setSeller(Seller *sellerPtr);
 
     int getArticleNo() const;
     std::string getCompleteArticleNo() const;
     std::string getDescription();
-    Seller* getSeller();
+    Seller *getSeller();
-    Sale* getSale();
+    Sale *getSale();
     int getPrice() const;
     std::string getPriceAsString() const;
 
-  private:
+private:
-    Seller* sellerPtr_{};
+    Seller *m_sellerPtr{};
-    Sale* salePtr_{};
+    Sale *m_salePtr{};
-    int articleNo_{};
+    int m_articleNo{};
-    int price_{};
+    int m_price{};
-    std::string description_{};
+    std::string m_description{};
 };
 
 #endif

src/core/csvreader.cpp

@@ -0,0 +1,92 @@
+#include "csvreader.h"
+#include "utils.h"
+
+#include <fstream>
+
+// #include <csv.hpp>
+#include <boost/algorithm/string.hpp>
+
+#ifdef DELETE
+#undef DELETE
+#endif
+
+namespace fs = std::filesystem;
+
+std::size_t CsvReader::readSellersFromFile(const fs::path &filePath, Marketplace *market)
+{
+
+#if defined(_WIN64) || defined(_WIN32)
+    // Windows: Somhow this is necessary in order to open file names with umlauts
+    auto wide = filePath.wstring();
+    std::string fileName(wide.begin(), wide.end());
+
+    std::ifstream infile(fileName);
+#else
+    // csv::CSVReader csvReader(filePath.string(), format);
+    std::ifstream infile(filePath.string());
+#endif
+
+    for (auto &seller : market->getSellers()) {
+        seller->setState(Seller::State::DELETE);
+    }
+
+    market->storeToDb(true);
+
+    std::string line;
+
+    while (getline(infile, line)) {
+        std::vector<std::string> strs;
+        boost::split(strs, line, boost::is_any_of(";"));
+
+        auto seller = std::make_unique<Seller>();
+
+        try {
+            int sellerNo = std::stoi(strs[0]);
+            seller->setSellerNo(sellerNo);
+        } catch (std::invalid_argument const &ex) {
+            continue;
+        }
+
+        if (isNumber(strs[1]))
+            seller->setNumArticlesOffered(std::stoi(strs[1]));
+        else
+            seller->setNumArticlesOffered(0);
+
+        // If both, first name and last name, are empty, use N. N.
+        // Else, use the real values.
+        if (strs[2].empty() && strs[2].empty()) {
+            seller->setFirstName("N.");
+            seller->setLastName("N.");
+        } else {
+            std::string firstName = strs[2];
+            seller->setFirstName(trim(firstName));
+            std::string lastName = strs[3];
+            seller->setLastName(trim(lastName));
+        }
+
+        market->getSellers().push_back(std::move(seller));
+    }
+
+    // Add one additional seller "RESERVE RESERVE"
+    auto seller = std::make_unique<Seller>();
+    seller->setSellerNo(market->getNextSellerNo());
+    seller->setFirstName("RESERVE");
+    seller->setLastName("RESERVE");
+    market->getSellers().push_back(std::move(seller));
+
+    // If there was no special seller "Sonderkonto" in import data, then create one
+    auto specialSeller = market->findSellerWithSellerNo(0);
+    if (!specialSeller) {
+        auto seller = std::make_unique<Seller>();
+        seller->setSellerNo(0);
+        seller->setLastName("Sonderkonto");
+        seller->setFirstName("Sonderkonto");
+        seller->setNumArticlesOffered(0);
+        market->getSellers().push_back(std::move(seller));
+    }
+
+    market->sortSellers();
+    market->storeToDb();
+
+    return market->getSellers().size() - 1; // minus 1 because we don't count the "special" seller
+}

src/core/csvreader.h

@@ -0,0 +1,19 @@
+#ifndef CSV_READER_H
+#define CSV_READER_H
+
+#include "marketplace.h"
+#include "seller.h"
+
+#include <filesystem>
+#include <memory>
+#include <string>
+#include <vector>
+
+class CsvReader
+{
+public:
+    static std::size_t readSellersFromFile(const std::filesystem::path &filePath,
+                                           Marketplace *market);
+};
+
+#endif

src/core/database.cpp

@@ -1,13 +1,13 @@
 #include "database.h"
 
+#include <chrono>
 #include <filesystem>
+#include <format>
 #include <iostream>
 #include <stdexcept>
 #include <vector>
 
-#include "boost/date_time/posix_time/posix_time.hpp"
+Database::Database(const std::string &dbname)
-
-Database::Database(const std::string& dbname)
 {
     dbname_ = dbname;
     init();
@@ -28,7 +28,7 @@ Database::Database()
     if (!fs::exists(dbpath)) {
         try {
             fs::create_directories(dbpath);
-        } catch (fs::filesystem_error& err) {
+        } catch (fs::filesystem_error &err) {
             throw err;
         }
     }
@@ -45,8 +45,11 @@ void Database::newDb()
 
     fs::path sourcePath = dbname_;
     fs::path destPath = sourcePath.parent_path() / sourcePath.stem();
-    destPath += std::string("_") +=
+
-        boost::posix_time::to_iso_string(boost::posix_time::second_clock::local_time()) += ".db";
+    auto chronoTime = std::chrono::system_clock::now();
+    std::string timeString = std::format("{0:%FT%H-%M-%S}", chronoTime);
+
+    destPath += std::string("_") += timeString += ".db";
 
     fs::copy_file(sourcePath, destPath, fs::copy_options::overwrite_existing);
 
@@ -57,13 +60,13 @@ void Database::newDb()
 
 Database::~Database() { sqlite3_close(db_); }
 
-void Database::exec(const std::string& sql)
+void Database::exec(const std::string &sql)
 {
-    char* errMsg;
+    char *errMsg;
     const int errCode = sqlite3_exec(db_, sql.c_str(), nullptr, nullptr, &errMsg);
     if (errCode) {
         std::string errMsgString(errMsg); // Make a C++ string of the errMsg, so that we can call
-                                          // sqlite3_free() before throwing the exception
+                                            // sqlite3_free() before throwing the exception
         sqlite3_free(errMsg);
         throw std::runtime_error("Error in SQL execution: " + errMsgString);
     }
@@ -75,11 +78,10 @@ void Database::createNew()
 
     std::string sqlCreateKima2{"CREATE TABLE IF NOT EXISTS kima2 ("
                                "version INTEGER NOT NULL);"
-                               "INSERT INTO kima2 (version) VALUES (2);"};
+                               "INSERT INTO kima2 (version) VALUES (3);"};
     sqlStrings.push_back(sqlCreateKima2);
     std::string sqlCreateSellers{"CREATE TABLE IF NOT EXISTS sellers ("
-                                 "id TEXT PRIMARY KEY NOT NULL, "
+                                 "seller_no INTEGER PRIMARY KEY NOT NULL, "
-                                 "seller_no INTEGER, "
                                  "first_name TEXT, "
                                  "last_name TEXT, "
                                  "num_offered_articles INTEGER, "
@@ -89,13 +91,13 @@ void Database::createNew()
     std::string sqlCreateArticles{
         "CREATE TABLE IF NOT EXISTS articles ("
         "id TEXT PRIMARY KEY NOT NULL, "
-        "seller_id TEXT NOT NULL, "
+        "seller_no TEXT NOT NULL, "
         "source_no INTEGER NOT NULL, "
         "article_no INTEGER NOT NULL, "
         "description TEXT, "
         "price INTEGER NOT NULL, "
         "UNIQUE (source_no, article_no), "
-        "FOREIGN KEY (seller_id) REFERENCES sellers(id) ON DELETE CASCADE, "
+        "FOREIGN KEY (seller_no) REFERENCES sellers(seller_no) ON DELETE CASCADE, "
         "CHECK (article_no BETWEEN 0 AND 99999)"
         ");"};
     sqlStrings.push_back(sqlCreateArticles);
@@ -115,13 +117,13 @@ void Database::createNew()
     sqlStrings.push_back(sqlCreateSalesItems);
 
     std::string sqlInitialEntries{
-        "INSERT OR IGNORE INTO sellers (id, seller_no, first_name, last_name, "
+        "INSERT OR IGNORE INTO sellers (seller_no, first_name, last_name, "
         "num_offered_articles) VALUES "
-        "('11111111-1111-1111-1111-111111111111', 0, 'Sonderkonto', 'Sonderkonto', 0)"};
+        "(0, 'Sonderkonto', 'Sonderkonto', 0)"};
     sqlStrings.push_back(sqlInitialEntries);
 
     beginTransaction();
-    for (const auto& sql : sqlStrings) {
+    for (const auto &sql : sqlStrings) {
         exec(sql);
     }
     endTransaction();
@@ -130,13 +132,15 @@ void Database::createNew()
 void Database::updateDbToVer2()
 {
     beginTransaction();
-    exec("INSERT OR IGNORE INTO sellers (id, seller_no, first_name, last_name, "
+    exec("INSERT OR IGNORE INTO sellers (seller_no, first_name, last_name, "
          "num_offered_articles) VALUES "
-         "('11111111-1111-1111-1111-111111111111', 0, 'Sonderkonto', 'Sonderkonto', 0)");
+         "(0, 'Sonderkonto', 'Sonderkonto', 0)");
-    exec("UPDATE kima2 SET version = 2");
+    exec("UPDATE kima2 SET version = 3");
     endTransaction();
 }
 
+void Database::updateDbToVer3() { newDb(); }
+
 void Database::init()
 {
     const int errCode = sqlite3_open(dbname_.c_str(), &db_);
@@ -152,12 +156,19 @@ void Database::init()
     switch (version) {
     case 0:
         createNew();
+        initResult_ = InitResult::OK;
         break;
     case 1:
-        updateDbToVer2();
+        updateDbToVer3();
+        initResult_ = InitResult::OUTDATED_REPLACED;
+        break;
+    case 2:
+        updateDbToVer3();
+        initResult_ = InitResult::OUTDATED_REPLACED;
         break;
     default:
         // Do nothing because we are up-to-date.
+        initResult_ = InitResult::OK;
         break;
     }
 }
@@ -165,7 +176,7 @@ void Database::init()
 int Database::getVersion()
 {
     int retCode{};
-    sqlite3_stmt* stmt;
+    sqlite3_stmt *stmt;
 
     // Check if there's already a kima2 table available.
     // If not, return version == 0.
@@ -212,29 +223,26 @@ void Database::beginTransaction() { exec("BEGIN TRANSACTION"); }
 
 void Database::endTransaction() { exec("END TRANSACTION"); }
 
-unsigned int Database::storeSellers(std::vector<std::unique_ptr<Seller>>& sellers, bool onlyDelete)
+unsigned int Database::storeSellers(std::vector<std::unique_ptr<Seller>> &sellers, bool onlyDelete)
 {
     int retCode{};
     int count{};
-    sqlite3_stmt* stmt;
+    sqlite3_stmt *stmt;
 
     beginTransaction();
 
-    for (auto& seller : sellers) {
+    for (auto &seller : sellers) {
         if (seller->getState() == Seller::State::NEW && !onlyDelete) {
             retCode = sqlite3_prepare_v2(
                 db_,
                 "INSERT INTO sellers"
-                " (id, seller_no, first_name, last_name, num_offered_articles)"
+                " (seller_no, first_name, last_name, num_offered_articles)"
-                " VALUES (:uuid, :seller_no, :first_name, :last_name, :num_offered_articles)",
+                " VALUES (:seller_no, :first_name, :last_name, :num_offered_articles)",
                 -1, &stmt, nullptr);
 
             if (retCode != SQLITE_OK)
                 throw std::runtime_error(sqlite3_errmsg(db_));
 
-            sqlite3_bind_text(stmt, sqlite3_bind_parameter_index(stmt, ":uuid"),
-                              boost::uuids::to_string(seller->getUuid()).c_str(), -1,
-                              SQLITE_TRANSIENT);
             sqlite3_bind_int(stmt, sqlite3_bind_parameter_index(stmt, ":seller_no"),
                              seller->getSellerNo());
             sqlite3_bind_text(stmt, sqlite3_bind_parameter_index(stmt, ":first_name"),
@@ -260,15 +268,13 @@ unsigned int Database::storeSellers(std::vector<std::unique_ptr<Seller>>& seller
                 "UPDATE sellers SET"
                 " seller_no = :seller_no, first_name = :first_name,"
                 " last_name = :last_name, num_offered_articles = :num_offered_articles"
-                " WHERE id = :uuid",
+                " WHERE seller_no = :id",
                 -1, &stmt, nullptr);
 
             if (retCode != SQLITE_OK)
                 throw std::runtime_error(sqlite3_errmsg(db_));
 
-            sqlite3_bind_text(stmt, sqlite3_bind_parameter_index(stmt, ":uuid"),
+            sqlite3_bind_int(stmt, sqlite3_bind_parameter_index(stmt, ":id"), seller->getId());
-                              boost::uuids::to_string(seller->getUuid()).c_str(), -1,
-                              SQLITE_TRANSIENT);
             sqlite3_bind_int(stmt, sqlite3_bind_parameter_index(stmt, ":seller_no"),
                              seller->getSellerNo());
             sqlite3_bind_text(stmt, sqlite3_bind_parameter_index(stmt, ":first_name"),
@@ -291,15 +297,13 @@ unsigned int Database::storeSellers(std::vector<std::unique_ptr<Seller>>& seller
         } else if (seller->getState() == Seller::State::DELETE) {
             count += static_cast<int>(seller->getArticles(false).size());
 
-            retCode =
+            retCode = sqlite3_prepare_v2(db_, "DELETE FROM sellers WHERE seller_no = :id", -1,
-                sqlite3_prepare_v2(db_, "DELETE FROM sellers WHERE id = :uuid", -1, &stmt, nullptr);
+                                         &stmt, nullptr);
 
             if (retCode != SQLITE_OK)
                 throw std::runtime_error(sqlite3_errmsg(db_));
 
-            sqlite3_bind_text(stmt, sqlite3_bind_parameter_index(stmt, ":uuid"),
+            sqlite3_bind_int(stmt, sqlite3_bind_parameter_index(stmt, ":id"), seller->getId());
-                              boost::uuids::to_string(seller->getUuid()).c_str(), -1,
-                              SQLITE_TRANSIENT);
 
             retCode = sqlite3_step(stmt);
 
@@ -322,12 +326,12 @@ unsigned int Database::storeSellers(std::vector<std::unique_ptr<Seller>>& seller
 
     // Everything went fine, so we can now update our objects
     sellers.erase(std::remove_if(sellers.begin(), sellers.end(),
-                                 [](const std::unique_ptr<Seller>& seller) {
+                                 [](const std::unique_ptr<Seller> &seller) {
                                      return (seller->getState() == Seller::State::DELETE);
                                  }),
                   sellers.end());
 
-    for (auto& seller : sellers) {
+    for (auto &seller : sellers) {
         seller->cleanupArticles();
         seller->setState(Seller::State::OK);
     }
@@ -335,18 +339,18 @@ unsigned int Database::storeSellers(std::vector<std::unique_ptr<Seller>>& seller
     return count;
 }
 
-unsigned int Database::storeArticles(std::vector<Article*> articles)
+unsigned int Database::storeArticles(std::vector<Article *> articles)
 {
     int retCode{};
     int count{};
-    sqlite3_stmt* stmt;
+    sqlite3_stmt *stmt;
 
-    for (auto& article : articles) {
+    for (auto &article : articles) {
         if (article->getState() == Article::State::NEW) {
             retCode = sqlite3_prepare_v2(
                 db_,
                 "INSERT INTO articles"
-                " (id, seller_id, source_no, article_no, description, price)"
+                " (id, seller_no, source_no, article_no, description, price)"
                 " VALUES (:uuid, :seller_id, :source_no, :article_no, :desc, :price)",
                 -1, &stmt, nullptr);
 
@@ -356,9 +360,8 @@ unsigned int Database::storeArticles(std::vector<Article*> articles)
             sqlite3_bind_text(stmt, sqlite3_bind_parameter_index(stmt, ":uuid"),
                               boost::uuids::to_string(article->getUuid()).c_str(), -1,
                               SQLITE_TRANSIENT);
-            sqlite3_bind_text(stmt, sqlite3_bind_parameter_index(stmt, ":seller_id"),
+            sqlite3_bind_int(stmt, sqlite3_bind_parameter_index(stmt, ":seller_id"),
-                              boost::uuids::to_string(article->getSeller()->getUuid()).c_str(), -1,
+                             article->getSeller()->getId());
-                              SQLITE_TRANSIENT);
             sqlite3_bind_int(stmt, sqlite3_bind_parameter_index(stmt, ":source_no"),
                              article->getSourceNo());
             sqlite3_bind_int(stmt, sqlite3_bind_parameter_index(stmt, ":article_no"),
@@ -382,7 +385,7 @@ unsigned int Database::storeArticles(std::vector<Article*> articles)
             retCode = sqlite3_prepare_v2(
                 db_,
                 "UPDATE articles SET"
-                " seller_id = seller_id, source_no = :source_no, article_no = :article_no,"
+                " seller_no = :seller_id, source_no = :source_no, article_no = :article_no,"
                 " description = :desc, price = :price"
                 " WHERE id = :uuid",
                 -1, &stmt, nullptr);
@@ -393,9 +396,8 @@ unsigned int Database::storeArticles(std::vector<Article*> articles)
             sqlite3_bind_text(stmt, sqlite3_bind_parameter_index(stmt, ":uuid"),
                               boost::uuids::to_string(article->getUuid()).c_str(), -1,
                               SQLITE_TRANSIENT);
-            sqlite3_bind_text(stmt, sqlite3_bind_parameter_index(stmt, ":seller_id"),
+            sqlite3_bind_int(stmt, sqlite3_bind_parameter_index(stmt, ":seller_id"),
-                              boost::uuids::to_string(article->getSeller()->getUuid()).c_str(), -1,
+                             article->getSeller()->getId());
-                              SQLITE_TRANSIENT);
             sqlite3_bind_int(stmt, sqlite3_bind_parameter_index(stmt, ":source_no"),
                              article->getSourceNo());
             sqlite3_bind_int(stmt, sqlite3_bind_parameter_index(stmt, ":article_no"),
@@ -442,18 +444,18 @@ unsigned int Database::storeArticles(std::vector<Article*> articles)
     return count;
 }
 
-unsigned int Database::storeSales(std::vector<std::unique_ptr<Sale>>& sales)
+unsigned int Database::storeSales(std::vector<std::unique_ptr<Sale>> &sales)
 {
     int retCode{};
     int count{};
-    sqlite3_stmt* stmt;
+    sqlite3_stmt *stmt;
 
     if (sales.size() == 0)
         return 0;
 
     beginTransaction();
 
-    for (auto& sale : sales) {
+    for (auto &sale : sales) {
         if (sale->getState() == Sale::State::NEW) {
             retCode = sqlite3_prepare_v2(db_,
                                          "INSERT INTO sales"
@@ -483,7 +485,7 @@ unsigned int Database::storeSales(std::vector<std::unique_ptr<Sale>>& sales)
             ++count;
             sqlite3_finalize(stmt);
 
-            for (const auto& article : sale->getArticles()) {
+            for (const auto &article : sale->getArticles()) {
                 retCode = sqlite3_prepare_v2(db_,
                                              "INSERT INTO sales_items"
                                              " (sale_id, article_id)"
@@ -536,24 +538,24 @@ unsigned int Database::storeSales(std::vector<std::unique_ptr<Sale>>& sales)
     // Everything went fine, so we can now update our objects
     sales.erase(
         std::remove_if(sales.begin(), sales.end(),
-                       [](const auto& sale) { return (sale->getState() == Sale::State::DELETE); }),
+                       [](const auto &sale) { return (sale->getState() == Sale::State::DELETE); }),
         sales.end());
 
-    for (auto& sale : sales) {
+    for (auto &sale : sales) {
         sale->setState(Sale::State::OK);
     }
 
     return count;
 }
 
-unsigned int Database::loadSellers(std::vector<std::unique_ptr<Seller>>& sellers)
+unsigned int Database::loadSellers(std::vector<std::unique_ptr<Seller>> &sellers)
 {
     int retCode{};
     int count{};
-    sqlite3_stmt* stmt;
+    sqlite3_stmt *stmt;
 
     retCode = sqlite3_prepare_v2(db_,
-                                 "SELECT id, seller_no, first_name, last_name, "
+                                 "SELECT seller_no, first_name, last_name, "
                                  "num_offered_articles FROM sellers ORDER BY seller_no",
                                  -1, &stmt, nullptr);
     if (retCode != SQLITE_OK)
@@ -566,11 +568,10 @@ unsigned int Database::loadSellers(std::vector<std::unique_ptr<Seller>>& sellers
     while (retCode != SQLITE_DONE) {
         ++count;
         auto seller = std::make_unique<Seller>();
-        seller->setUuidFromString(reinterpret_cast<const char*>(sqlite3_column_text(stmt, 0)));
+        seller->setSellerNo(sqlite3_column_int(stmt, 0));
-        seller->setSellerNo(sqlite3_column_int(stmt, 1));
+        seller->setFirstName(reinterpret_cast<const char *>(sqlite3_column_text(stmt, 1)));
-        seller->setFirstName(reinterpret_cast<const char*>(sqlite3_column_text(stmt, 2)));
+        seller->setLastName(reinterpret_cast<const char *>(sqlite3_column_text(stmt, 2)));
-        seller->setLastName(reinterpret_cast<const char*>(sqlite3_column_text(stmt, 3)));
+        seller->setNumArticlesOffered(sqlite3_column_int(stmt, 3));
-        seller->setNumArticlesOffered(sqlite3_column_int(stmt, 4));
         seller->setState(Seller::State::OK);
         sellers.push_back(std::move(seller));
 
@@ -579,29 +580,29 @@ unsigned int Database::loadSellers(std::vector<std::unique_ptr<Seller>>& sellers
 
     sqlite3_finalize(stmt);
 
-    for (auto& seller : sellers) {
+    for (auto &seller : sellers) {
         retCode = sqlite3_prepare_v2(db_,
                                      "SELECT id, source_no, article_no, description, price"
                                      " FROM articles"
-                                     " WHERE seller_id = :seller_uuid"
+                                     " WHERE seller_no = :seller_id"
                                      " ORDER BY article_no",
                                      -1, &stmt, nullptr);
         if (retCode != SQLITE_OK)
             throw std::runtime_error(sqlite3_errmsg(db_));
 
-        sqlite3_bind_text(stmt, sqlite3_bind_parameter_index(stmt, ":seller_uuid"),
+        sqlite3_bind_int(stmt, sqlite3_bind_parameter_index(stmt, ":seller_id"), seller->getId());
-                          boost::uuids::to_string(seller->getUuid()).c_str(), -1, SQLITE_TRANSIENT);
 
         retCode = sqlite3_step(stmt);
 
         while (retCode != SQLITE_DONE) {
             ++count;
             auto article = std::make_unique<Article>();
-            article->setUuidFromString(reinterpret_cast<const char*>(sqlite3_column_text(stmt, 0)));
+            article->setUuidFromString(
+                reinterpret_cast<const char *>(sqlite3_column_text(stmt, 0)));
             article->setSeller(seller.get());
             article->setSourceNo(sqlite3_column_int(stmt, 1));
             article->setArticleNo(sqlite3_column_int(stmt, 2));
-            article->setDescription(reinterpret_cast<const char*>(sqlite3_column_text(stmt, 3)));
+            article->setDescription(reinterpret_cast<const char *>(sqlite3_column_text(stmt, 3)));
             article->setPrice(sqlite3_column_int(stmt, 4));
             article->setState(Article::State::OK);
 
@@ -616,12 +617,12 @@ unsigned int Database::loadSellers(std::vector<std::unique_ptr<Seller>>& sellers
     return count;
 }
 
-unsigned int Database::loadSales(std::vector<std::unique_ptr<Sale>>& sales,
+unsigned int Database::loadSales(std::vector<std::unique_ptr<Sale>> &sales,
-                                 std::vector<std::unique_ptr<Seller>>& sellers)
+                                 std::vector<std::unique_ptr<Seller>> &sellers)
 {
     int retCode{};
     int count{};
-    sqlite3_stmt* stmt;
+    sqlite3_stmt *stmt;
 
     retCode = sqlite3_prepare_v2(db_,
                                  "SELECT id, source_no, sold_at"
@@ -634,13 +635,13 @@ unsigned int Database::loadSales(std::vector<std::unique_ptr<Sale>>& sales,
 
     sales.clear();
 
-    std::map<std::string, Sale*> saleMap;
+    std::map<std::string, Sale *> saleMap;
     while (retCode != SQLITE_DONE) {
         ++count;
         auto sale = std::make_unique<Sale>();
-        sale->setUuidFromString(reinterpret_cast<const char*>(sqlite3_column_text(stmt, 0)));
+        sale->setUuidFromString(reinterpret_cast<const char *>(sqlite3_column_text(stmt, 0)));
         sale->setSourceNo(sqlite3_column_int(stmt, 1));
-        sale->setTimestamp(reinterpret_cast<const char*>(sqlite3_column_text(stmt, 2)));
+        sale->setTimestamp(reinterpret_cast<const char *>(sqlite3_column_text(stmt, 2)));
         sale->setState(Sale::State::OK);
         saleMap.insert(std::make_pair(sale->getUuidAsString(), sale.get()));
         sales.push_back(std::move(sale));
@@ -650,8 +651,8 @@ unsigned int Database::loadSales(std::vector<std::unique_ptr<Sale>>& sales,
 
     sqlite3_finalize(stmt);
 
-    std::map<std::string, Article*> artMap;
+    std::map<std::string, Article *> artMap;
-    for (const auto& seller : sellers) {
+    for (const auto &seller : sellers) {
         for (const auto article : seller->getArticles(false)) {
             artMap.insert(std::make_pair(article->getUuidAsString(), article));
         }
@@ -667,8 +668,8 @@ unsigned int Database::loadSales(std::vector<std::unique_ptr<Sale>>& sales,
     retCode = sqlite3_step(stmt);
 
     while (retCode != SQLITE_DONE) {
-        saleMap[reinterpret_cast<const char*>(sqlite3_column_text(stmt, 0))]->addArticle(
+        saleMap[reinterpret_cast<const char *>(sqlite3_column_text(stmt, 0))]->addArticle(
-            artMap[reinterpret_cast<const char*>(sqlite3_column_text(stmt, 1))]);
+            artMap[reinterpret_cast<const char *>(sqlite3_column_text(stmt, 1))]);
 
         retCode = sqlite3_step(stmt);
     }
@@ -681,7 +682,7 @@ unsigned int Database::loadSales(std::vector<std::unique_ptr<Sale>>& sales,
 void Database::updateCashPointNo(int oldCashPointNo, int newCashPointNo)
 {
     int retCode{};
-    sqlite3_stmt* stmt;
+    sqlite3_stmt *stmt;
 
     // Check if the new no ist already in use
     retCode = sqlite3_prepare_v2(db_, "SELECT COUNT() FROM articles WHERE source_no = :source_no",

src/core/database.h

@@ -10,32 +10,36 @@
 
 class Database
 {
-  public:
+public:
-    explicit Database(const std::string& dbname);
+    enum class InitResult { OK, OUTDATED_REPLACED };
+    explicit Database(const std::string &dbname);
     Database();
     ~Database();
-    Database(const Database&) = delete;
+    Database(const Database &) = delete;
-    Database& operator=(const Database&) = delete;
+    Database &operator=(const Database &) = delete;
-    void exec(const std::string& sql);
+    void exec(const std::string &sql);
-    unsigned int storeSellers(std::vector<std::unique_ptr<Seller>>& sellers,
+    unsigned int storeSellers(std::vector<std::unique_ptr<Seller>> &sellers,
                               bool onlyDelete = false);
-    unsigned int loadSellers(std::vector<std::unique_ptr<Seller>>& sellers);
+    unsigned int loadSellers(std::vector<std::unique_ptr<Seller>> &sellers);
-    unsigned int storeSales(std::vector<std::unique_ptr<Sale>>& sales);
+    unsigned int storeSales(std::vector<std::unique_ptr<Sale>> &sales);
-    unsigned int loadSales(std::vector<std::unique_ptr<Sale>>& sales,
+    unsigned int loadSales(std::vector<std::unique_ptr<Sale>> &sales,
-                           std::vector<std::unique_ptr<Seller>>& sellers);
+                           std::vector<std::unique_ptr<Seller>> &sellers);
     void updateCashPointNo(int oldCashPointNo, int newCashPointNo);
     void newDb();
+    InitResult getInitResult() { return initResult_; }
 
-  private:
+private:
-    sqlite3* db_{nullptr};
+    sqlite3 *db_{nullptr};
     std::string dbname_;
     void init();
     void beginTransaction();
     void endTransaction();
     void createNew();
     int getVersion();
-    unsigned int storeArticles(std::vector<Article*> articles);
+    unsigned int storeArticles(std::vector<Article *> articles);
     void updateDbToVer2();
+    void updateDbToVer3();
+    InitResult initResult_{InitResult::OK};
 };
 
 #endif // DATABASE_H

src/core/entity.cpp

@@ -1,33 +1,3 @@
 #include "entity.h"
 
-#include <iostream>
+Entity::State Entity::getState() const { return m_state; }
-
-#include <boost/uuid/uuid_generators.hpp>
-#include <boost/uuid/uuid_io.hpp>
-
-Entity::~Entity() = default;
-
-void Entity::createUuid()
-{
-    static boost::uuids::random_generator generator{};
-    uuid_ = generator();
-}
-
-void Entity::setUuidFromString(const std::string& uuidString)
-{
-    boost::uuids::string_generator generator{};
-    uuid_ = generator(uuidString);
-}
-
-Entity::State Entity::getState() const
-{
-    return state_;
-}
-
-void Entity::setSourceNo(int sourceNo) {
-    sourceNo_ = sourceNo;
-}
-
-int Entity::getSourceNo() const {
-    return sourceNo_;
-}

src/core/entity.h

@@ -1,35 +1,16 @@
 #ifndef ENTITY_H
 #define ENTITY_H
 
-#include <string>
-
-#include <boost/uuid/uuid.hpp>
-#include <boost/uuid/uuid_io.hpp>
-
 class Entity
 {
-  public:
+public:
     enum class State { NEW, UPDATE, DELETE, OK };
-
+    virtual ~Entity() = default;
-    // Entity() = default;
+    void setState(State state) { m_state = state; }
-    virtual ~Entity() = 0;
-
-    void createUuid();
-    void setUuidFromString(const std::string& uuidString);
-    void setState(State state) { state_ = state; }
-    void setSourceNo(int sourceNo);
-
-    const boost::uuids::uuid& getUuid() const { return uuid_; };
-    std::string getUuidAsString() const { return boost::uuids::to_string(uuid_); }
     virtual State getState() const;
-    virtual int getSourceNo() const;
 
-  protected:
+private:
-    int sourceNo_{};
+    State m_state{State::NEW};
-
-  private:
-    boost::uuids::uuid uuid_{};
-    State state_{State::NEW};
 };
 
 #endif // ENTITY_H

src/core/entityint.cpp

@@ -0,0 +1,5 @@
+#include "entityint.h"
+
+EntityInt::EntityInt(int id) { m_id = id; }
+
+void EntityInt::setId(int id) { m_id = id; }

src/core/entityint.h

@@ -0,0 +1,19 @@
+#ifndef ENTITY_INT_H
+#define ENTITY_INT_H
+
+#include "entity.h"
+
+class EntityInt : public Entity
+{
+public:
+    EntityInt() = default;
+    virtual ~EntityInt() = default;
+    EntityInt(int id);
+    void setId(int id);
+    int getId() const { return m_id; };
+
+protected:
+    int m_id{};
+};
+
+#endif // ENTITY_INT_H

src/core/entityuuid.cpp

@@ -0,0 +1,22 @@
+#include "entityuuid.h"
+
+#include <iostream>
+
+#include <boost/uuid/uuid_generators.hpp>
+#include <boost/uuid/uuid_io.hpp>
+
+void EntityUuid::createUuid()
+{
+    static boost::uuids::random_generator generator{};
+    m_uuid = generator();
+}
+
+void EntityUuid::setUuidFromString(const std::string &uuidString)
+{
+    boost::uuids::string_generator generator{};
+    m_uuid = generator(uuidString);
+}
+
+void EntityUuid::setSourceNo(int sourceNo) { m_sourceNo = sourceNo; }
+
+int EntityUuid::getSourceNo() const { return m_sourceNo; }

src/core/entityuuid.h

@@ -0,0 +1,32 @@
+#ifndef ENTITY_UUID_H
+#define ENTITY_UUID_H
+
+#include "entity.h"
+
+#include <string>
+
+#include <boost/uuid/uuid.hpp>
+#include <boost/uuid/uuid_io.hpp>
+
+class EntityUuid : public Entity
+{
+public:
+    EntityUuid() = default;
+    virtual ~EntityUuid() = default;
+
+    void createUuid();
+    void setUuidFromString(const std::string &uuidString);
+    void setSourceNo(int sourceNo);
+
+    const boost::uuids::uuid &getUuid() const { return m_uuid; };
+    std::string getUuidAsString() const { return boost::uuids::to_string(m_uuid); }
+    virtual int getSourceNo() const;
+
+protected:
+    int m_sourceNo{};
+
+private:
+    boost::uuids::uuid m_uuid{};
+};
+
+#endif // ENTITY_UUID_H

src/core/excelreader.cpp

@@ -1,63 +0,0 @@
-#include "excelreader.h"
-
-#include <xlnt/xlnt.hpp>
-#include <fstream>
-
-namespace fs = std::filesystem;
-
-void ExcelReader::readSellersFromFile(const fs::path& filePath, Marketplace* market)
-{
-    xlnt::workbook wb;
-    std::ifstream mystream(filePath, std::ios::binary);
-    if(!mystream.is_open()) {
-	throw std::runtime_error("Could not open ecxel file");
-    }
-    wb.load(mystream);
-
-    for (auto& seller : market->getSellers()) {
-        seller->setState(Seller::State::DELETE);
-    }
-
-    market->storeToDb(true);
-    auto ws = wb.sheet_by_index(0);
-
-    const int START_ROW = 5;
-    const int END_ROW = 350;
-
-    int rowCount{};
-    for (const auto& row : ws.rows(false)) {
-        if (rowCount < START_ROW) {
-            ++rowCount;
-            continue;
-        } else if (rowCount > END_ROW) {
-            break;
-        }
-        if (row[2].value<std::string>().empty() && row[3].value<std::string>().empty()) {
-            ++rowCount;
-            continue;
-        }
-        auto seller = std::make_unique<Seller>();
-        seller->createUuid();
-        seller->setSellerNo(row[0].value<int>());
-        seller->setNumArticlesOffered(row[1].value<int>());
-        seller->setFirstName(row[2].value<std::string>());
-        seller->setLastName(row[3].value<std::string>());
-        market->getSellers().push_back(std::move(seller));
-        rowCount++;
-    }
-
-    // If there was no special seller "Sonderkonto" in import data, then create one
-    auto specialSeller = market->findSellerWithUuid("11111111-1111-1111-1111-111111111111");
-    if (!specialSeller) {
-        auto seller = std::make_unique<Seller>();
-        seller->setUuidFromString("11111111-1111-1111-1111-111111111111");
-        seller->setSellerNo(0);
-        seller->setLastName("Sonderkonto");
-        seller->setFirstName("Sonderkonto");
-        seller->setNumArticlesOffered(0);
-        market->getSellers().push_back(std::move(seller));
-    }
-
-    market->sortSellers();
-    market->storeToDb();
-}

src/core/excelreader.h

@@ -1,18 +0,0 @@
-#ifndef EXCEL_READER_H
-#define EXCEL_READER_H
-
-#include "marketplace.h"
-#include "seller.h"
-
-#include <filesystem>
-#include <memory>
-#include <string>
-#include <vector>
-
-class ExcelReader
-{
-  public:
-    static void readSellersFromFile(const std::filesystem::path& filePath, Marketplace* market);
-};
-
-#endif

src/core/jsonutil.cpp

@@ -5,17 +5,15 @@
 
 #include <fstream>
 
-namespace fs = std::filesystem;
 using json = nlohmann::json;
 
-void JsonUtil::exportSellers(const std::filesystem::path& filePath, Marketplace* market)
+void JsonUtil::exportSellers(const std::filesystem::path &filePath, Marketplace *market)
 {
     json root;
     std::ofstream file(filePath);
 
-    for (const auto& seller : market->getSellers()) {
+    for (const auto &seller : market->getSellers()) {
         json newEntry;
-        newEntry["uuid"] = seller->getUuidAsString();
         newEntry["seller_no"] = seller->getSellerNo();
         newEntry["last_name"] = seller->getLastName();
         newEntry["first_name"] = seller->getFirstName();
@@ -26,9 +24,9 @@ void JsonUtil::exportSellers(const std::filesystem::path& filePath, Marketplace*
     file << root.dump(4) << std::endl;
 }
 
-void JsonUtil::importSellers(const std::filesystem::path& filePath, Marketplace* market)
+std::size_t JsonUtil::importSellers(const std::filesystem::path &filePath, Marketplace *market)
 {
-    for (auto& seller : market->getSellers()) {
+    for (auto &seller : market->getSellers()) {
         seller->setState(Seller::State::DELETE);
     }
     market->storeToDb(true);
@@ -38,7 +36,6 @@ void JsonUtil::importSellers(const std::filesystem::path& filePath, Marketplace*
 
     for (auto val : jsonValues["sellers"]) {
         auto seller = std::make_unique<Seller>();
-        seller->setUuidFromString(val["uuid"]);
         seller->setSellerNo(val["seller_no"]);
         seller->setLastName(val["last_name"]);
         seller->setFirstName(val["first_name"]);
@@ -47,10 +44,9 @@ void JsonUtil::importSellers(const std::filesystem::path& filePath, Marketplace*
     }
 
     // If there was no special seller "Sonderkonto" in import data, then create one
-    auto specialSeller = market->findSellerWithUuid("11111111-1111-1111-1111-111111111111");
+    auto specialSeller = market->findSellerWithSellerNo(0);
     if (!specialSeller) {
         auto seller = std::make_unique<Seller>();
-        seller->setUuidFromString("11111111-1111-1111-1111-111111111111");
         seller->setSellerNo(0);
         seller->setLastName("Sonderkonto");
         seller->setFirstName("Sonderkonto");
@@ -59,18 +55,20 @@ void JsonUtil::importSellers(const std::filesystem::path& filePath, Marketplace*
     }
 
     market->sortSellers();
-
     market->storeToDb();
+
+    return market->getSellers().size() - 1; // minus 1 because we don't count the "special" seller
 }
 
-void JsonUtil::exportSales(const std::filesystem::path& filePath, Marketplace* market, int cashPointNo)
+void JsonUtil::exportSales(const std::filesystem::path &filePath, Marketplace *market,
+                           int cashPointNo)
 {
     json root;
     std::ofstream file(filePath);
 
     root["source_no"] = cashPointNo;
 
-    for (const auto& sale : market->getSales()) {
+    for (const auto &sale : market->getSales()) {
         if (sale->getSourceNo() != cashPointNo)
             continue;
 
@@ -78,10 +76,10 @@ void JsonUtil::exportSales(const std::filesystem::path& filePath, Marketplace* m
         newSale["uuid"] = sale->getUuidAsString();
         newSale["timestamp"] = sale->getTimestamp();
 
-        for (const auto& article : sale->getArticles()) {
+        for (const auto &article : sale->getArticles()) {
             json newArticle;
             newArticle["uuid"] = article->getUuidAsString();
-            newArticle["seller_uuid"] = article->getSeller()->getUuidAsString();
+            newArticle["seller_no"] = article->getSeller()->getSellerNo();
             newArticle["desc"] = article->getDescription();
             newArticle["price"] = article->getPrice();
             // newArticle["source_no"] = article->getSourceNo();
@@ -96,33 +94,36 @@ void JsonUtil::exportSales(const std::filesystem::path& filePath, Marketplace* m
     file << root.dump(4) << std::endl;
 }
 
-void JsonUtil::importSales(const std::filesystem::path& filePath, Marketplace* market, int cashPointNo)
+void JsonUtil::importSales(const std::filesystem::path &filePath, Marketplace *market,
+                           int cashPointNo)
 {
     std::ifstream file(filePath);
     json jsonValues = json::parse(file);
 
     int source_no = jsonValues["source_no"];
     if (source_no == cashPointNo) {
-        throw std::runtime_error("Die Kassen-Nr. der zu imporierenden Daten wird von dieser Kasse "
+        std::string ret = "Die Kassen-Nr. ";
-                                 "hier bereits verwendet.");
+        ret += std::to_string(source_no);
+        ret += " der zu imporierenden Daten wird von dieser Kasse hier bereits verwendet.";
+        throw std::runtime_error(ret);
     }
 
     market->setSalesToDelete(jsonValues["source_no"]);
     market->storeToDb();
 
-    for (const auto& valSale : jsonValues["sales"]) {
+    for (const auto &valSale : jsonValues["sales"]) {
         auto sale = std::make_unique<Sale>();
         sale->setUuidFromString(valSale["uuid"]);
         sale->setSourceNo(jsonValues["source_no"]);
         sale->setTimestamp(valSale["timestamp"]);
-        for (const auto& valArticle : valSale["articles"]) {
+        for (const auto &valArticle : valSale["articles"]) {
             auto article = std::make_unique<Article>();
             article->setUuidFromString(valArticle["uuid"]);
             article->setSourceNo(jsonValues["source_no"]);
             article->setArticleNo(valArticle["article_no"]);
             article->setDescription(valArticle["desc"]);
             article->setPrice(valArticle["price"]);
-            auto seller = market->findSellerWithUuid(valArticle["seller_uuid"]);
+            auto seller = market->findSellerWithSellerNo(valArticle["seller_no"]);
             if (seller == nullptr) {
                 throw std::runtime_error(
                     "Die zu importierenden Daten verweisen auf einen nicht vorhandenen Verkäufer. "

src/core/jsonutil.h

@@ -3,16 +3,18 @@
 
 #include "marketplace.h"
 
-#include <string>
 #include <filesystem>
+#include <string>
 
 class JsonUtil
 {
-  public:
+public:
-    static void exportSellers(const std::filesystem::path& filePath, Marketplace* market);
+    static void exportSellers(const std::filesystem::path &filePath, Marketplace *market);
-    static void importSellers(const std::filesystem::path& filePath, Marketplace* market);
+    static std::size_t importSellers(const std::filesystem::path &filePath, Marketplace *market);
-    static void exportSales(const std::filesystem::path& filePath, Marketplace* market, int cashPointNo);
+    static void exportSales(const std::filesystem::path &filePath, Marketplace *market,
-    static void importSales(const std::filesystem::path& filePath, Marketplace* market, int cashPointNo);
+                            int cashPointNo);
+    static void importSales(const std::filesystem::path &filePath, Marketplace *market,
+                            int cashPointNo);
 };
 
 #endif

src/core/marketplace.cpp

@@ -3,19 +3,19 @@
 #include "utils.h"
 
 #include <algorithm>
+#include <filesystem>
 #include <fstream>
 #include <iomanip>
 #include <numeric>
 #include <sstream>
-#include <filesystem>
 
 namespace fs = std::filesystem;
 
 Marketplace::Marketplace()
 {
-    auto seller = std::make_unique<Seller>("Max", "Mustermann");
+    /*auto seller = std::make_unique<Seller>("Max", "Mustermann");
     seller->createUuid();
-    sellers_.push_back(std::move(seller));
+    sellers_.push_back(std::move(seller)); */
 }
 
 void Marketplace::storeToDb(bool onlyDelete)
@@ -25,22 +25,23 @@ void Marketplace::storeToDb(bool onlyDelete)
     db.storeSales(sales_);
 }
 
-void Marketplace::loadFromDb()
+Database::InitResult Marketplace::loadFromDb()
 {
     Database db;
     db.loadSellers(sellers_);
     db.loadSales(sales_, sellers_);
+    return db.getInitResult();
 }
 
-SellersVec& Marketplace::getSellers() { return sellers_; }
+SellersVec &Marketplace::getSellers() { return sellers_; }
 
-SalesVec& Marketplace::getSales() { return sales_; }
+SalesVec &Marketplace::getSales() { return sales_; }
 
 int Marketplace::getNextSellerNo()
 {
     auto iter = std::max_element(
         sellers_.begin(), sellers_.end(),
-        [](const auto& a, const auto& b) -> bool { return a->getSellerNo() < b->getSellerNo(); });
+        [](const auto &a, const auto &b) -> bool { return a->getSellerNo() < b->getSellerNo(); });
     if (iter == sellers_.end())
         return 1;
     return (*iter)->getSellerNo() + 1;
@@ -52,14 +53,14 @@ int Marketplace::getNextArticleNo()
     int maxArtNoInBasket{0};
 
     auto iter = std::max_element(sellers_.begin(), sellers_.end(),
-                                 [](const auto& a, const auto& b) -> bool {
+                                 [](const auto &a, const auto &b) -> bool {
                                      return a->getMaxArticleNo() < b->getMaxArticleNo();
                                  });
     if (iter != sellers_.end())
         maxArtNoInDb = (*iter)->getMaxArticleNo();
 
     auto iter2 =
-        std::max_element(basket_.begin(), basket_.end(), [](const auto& a, const auto& b) -> bool {
+        std::max_element(basket_.begin(), basket_.end(), [](const auto &a, const auto &b) -> bool {
             return a->getArticleNo() < b->getArticleNo();
         });
 
@@ -72,13 +73,13 @@ int Marketplace::getNextArticleNo()
 int Marketplace::getNumSellersDelete()
 {
     int count = std::count_if(sellers_.begin(), sellers_.end(),
-                              [](const auto& a) { return a->getState() == Seller::State::DELETE; });
+                              [](const auto &a) { return a->getState() == Seller::State::DELETE; });
     return count;
 }
 
 int Marketplace::getNumArticlesSold()
 {
-    int sum = std::accumulate(sellers_.begin(), sellers_.end(), 0, [](int a, const auto& seller) {
+    int sum = std::accumulate(sellers_.begin(), sellers_.end(), 0, [](int a, const auto &seller) {
         return a + seller->numArticlesSold();
     });
     return sum;
@@ -86,7 +87,7 @@ int Marketplace::getNumArticlesSold()
 
 int Marketplace::getNumArticlesOffered()
 {
-    int sum = std::accumulate(sellers_.begin(), sellers_.end(), 0, [](int a, const auto& seller) {
+    int sum = std::accumulate(sellers_.begin(), sellers_.end(), 0, [](int a, const auto &seller) {
         return a + seller->numArticlesOffered();
     });
     return sum;
@@ -94,19 +95,10 @@ int Marketplace::getNumArticlesOffered()
 
 void Marketplace::sortSellers() { std::sort(sellers_.begin(), sellers_.end()); }
 
-Seller* Marketplace::findSellerWithSellerNo(int sellerNo)
+Seller *Marketplace::findSellerWithSellerNo(int sellerNo)
 {
     auto iter = std::find_if(sellers_.begin(), sellers_.end(),
-                             [sellerNo](const auto& a) { return a->getSellerNo() == sellerNo; });
+                             [sellerNo](const auto &a) { return a->getSellerNo() == sellerNo; });
-    if (iter == sellers_.end())
-        return nullptr;
-    return (*iter).get();
-}
-
-Seller* Marketplace::findSellerWithUuid(const std::string& uuid)
-{
-    auto iter = std::find_if(sellers_.begin(), sellers_.end(),
-                             [uuid](const auto& a) { return a->getUuidAsString() == uuid; });
     if (iter == sellers_.end())
         return nullptr;
     return (*iter).get();
@@ -114,7 +106,8 @@ Seller* Marketplace::findSellerWithUuid(const std::string& uuid)
 
 void Marketplace::addArticleToBasket(std::unique_ptr<Article> article)
 {
-    basket_.insert(basket_.begin(), std::move(article)); // article to the beginning of the basket vector
+    basket_.insert(basket_.begin(),
+                   std::move(article)); // article to the beginning of the basket vector
 }
 
 size_t Marketplace::basketSize() { return basket_.size(); }
@@ -136,12 +129,12 @@ void Marketplace::finishCurrentSale(std::unique_ptr<Sale> sale)
     storeToDb();
 }
 
-BasketVec& Marketplace::getBasket() { return basket_; }
+BasketVec &Marketplace::getBasket() { return basket_; }
 
 int Marketplace::getBasketSumInCent()
 {
     int sum = std::accumulate(basket_.begin(), basket_.end(), 0,
-                              [](int a, const auto& b) { return a + b->getPrice(); });
+                              [](int a, const auto &b) { return a + b->getPrice(); });
     return sum;
 }
 
@@ -155,39 +148,40 @@ std::string Marketplace::getBasketSumAsString()
 void Marketplace::removeSale(boost::uuids::uuid uuid)
 {
     sales_.erase(std::remove_if(sales_.begin(), sales_.end(),
-                                [&uuid](const auto& a) { return a->getUuid() == uuid; }),
+                                [&uuid](const auto &a) { return a->getUuid() == uuid; }),
                  sales_.end());
 }
 
 void Marketplace::setSalesToDelete(int cashPointNo)
 {
-    std::for_each(sales_.begin(), sales_.end(), [cashPointNo](auto& sale) {
+    std::for_each(sales_.begin(), sales_.end(), [cashPointNo](auto &sale) {
         if (sale->getSourceNo() == cashPointNo) {
             sale->setState(Sale::State::DELETE);
-            for (auto& article : sale->getArticles()) {
+            for (auto &article : sale->getArticles()) {
                 article->setState(Article::State::DELETE);
             }
         }
     });
 }
 
-void Marketplace::exportReportToCSV(const fs::path& filePath, int feeInPercent, int maxFeeInEuro)
+void Marketplace::exportReportToCSV(const fs::path &filePath, int feeInPercent, int maxFeeInEuro)
 {
-    const char delimiter = ',';
+    const char delimiter = ';';
     std::ofstream file(filePath);
 
     file << "Verk.Nr." << delimiter << "Nachname" << delimiter << "Vorname" << delimiter
          << "Anz. gemeldet" << delimiter << "Anz. verkauft" << delimiter << "Umsatz" << delimiter
          << "Auszahlung\n";
 
-    for (const auto& seller : sellers_) {
+    for (const auto &seller : sellers_) {
         file << seller->getSellerNo() << delimiter
              << escapeCsvValue(seller->getLastName(), delimiter) << delimiter
              << escapeCsvValue(seller->getFirstName(), delimiter) << delimiter
              << seller->numArticlesOffered() << delimiter << seller->numArticlesSold() << delimiter
              << escapeCsvValue(seller->sumAsString(), delimiter) << delimiter
-             << escapeCsvValue(paymentAsString(seller->sumInCents(), feeInPercent, maxFeeInEuro * 100),
+             << escapeCsvValue(
-                               delimiter)
+                    paymentAsString(seller->sumInCents(), feeInPercent, maxFeeInEuro * 100),
+                    delimiter)
              << "\n";
     }
 }
@@ -195,7 +189,7 @@ void Marketplace::exportReportToCSV(const fs::path& filePath, int feeInPercent,
 int Marketplace::getOverallSumInCent()
 {
     int sum = std::accumulate(sellers_.begin(), sellers_.end(), 0,
-                              [](int a, const auto& b) { return a + b->sumInCents(); });
+                              [](int a, const auto &b) { return a + b->sumInCents(); });
     return sum;
 }
 
@@ -208,7 +202,7 @@ std::string Marketplace::getOverallSumAsString()
 int Marketplace::getOverallPaymentInCent(int percent, int maxFee)
 {
     int sum = std::accumulate(
-        sellers_.begin(), sellers_.end(), 0, [percent, maxFee](int a, const auto& b) {
+        sellers_.begin(), sellers_.end(), 0, [percent, maxFee](int a, const auto &b) {
             return a + b->sumInCents() - marketFee(b->sumInCents(), percent, maxFee);
         });
     return sum;
@@ -246,7 +240,7 @@ std::string paymentAsString(int sumInCent, int percent, int maxFeeInCent)
     return formatCentAsEuroString(sumInCent - marketFee(sumInCent, percent, maxFeeInCent));
 }
 
-std::string escapeCsvValue(const std::string& value, const char delimiter)
+std::string escapeCsvValue(const std::string &value, const char delimiter)
 {
     std::stringstream output;
     bool containsDelim{false};
@@ -256,7 +250,7 @@ std::string escapeCsvValue(const std::string& value, const char delimiter)
         output << '"';
     }
 
-    for (auto& symbol : value) {
+    for (auto &symbol : value) {
         if (symbol == '"') {
             output << '"' << symbol;
         } else {

src/core/marketplace.h

@@ -2,6 +2,7 @@
 #define MARKETPLACE_H
 
 #include "article.h"
+#include "database.h"
 #include "sale.h"
 #include "seller.h"
 
@@ -19,26 +20,26 @@ using BasketVec = std::vector<std::unique_ptr<Article>>;
 
 class Marketplace
 {
-  public:
+public:
     Marketplace();
 
     void storeToDb(bool onlyDelete = false);
-    void loadFromDb();
+    Database::InitResult loadFromDb();
 
-    SellersVec& getSellers();
+    SellersVec &getSellers();
-    SalesVec& getSales();
+    SalesVec &getSales();
     int getNextSellerNo();
     int getNextArticleNo();
     int getNumSellersDelete();
     int getNumArticlesSold();
     int getNumArticlesOffered();
-    BasketVec& getBasket();
+    BasketVec &getBasket();
     int getBasketSumInCent();
     std::string getBasketSumAsString();
 
     void sortSellers();
-    Seller* findSellerWithSellerNo(int sellerNo);
+    Seller *findSellerWithSellerNo(int sellerNo);
-    Seller* findSellerWithUuid(const std::string& uuid);
+    Seller *findSellerWithUuid(const std::string &uuid);
     void addArticleToBasket(std::unique_ptr<Article> article);
     size_t basketSize();
     void finishCurrentSale(std::unique_ptr<Sale> sale);
@@ -53,12 +54,12 @@ class Marketplace
 
     void clear();
 
-    void exportReportToCSV(const std::filesystem::path& filePath, int feeInPercent,
+    void exportReportToCSV(const std::filesystem::path &filePath, int feeInPercent,
                            int maxFeeInEuro);
 
     friend class ExcelReader;
 
-  private:
+private:
     SellersVec sellers_;
     SalesVec sales_;
     BasketVec basket_;
@@ -67,6 +68,6 @@ class Marketplace
 double marketFee(int sumInCent, int percent, int maxFeeInCent);
 std::string marketFeeAsString(int sumInCent, int percent, int maxFeeInCent);
 std::string paymentAsString(int sumInCent, int percent, int maxFeeInCent);
-std::string escapeCsvValue(const std::string& value, const char delimiter);
+std::string escapeCsvValue(const std::string &value, const char delimiter);
 
 #endif

src/core/meson.build

@@ -0,0 +1,13 @@
+boost = dependency('boost', modules: ['date_time'], static: true)
+xlnt = dependency('xlnt')
+sqlite = dependency('sqlite3')
+
+src = ['database.cpp', 'entity.cpp', 'entityint.cpp', 'entityuuid.cpp',
+       'seller.cpp', 'article.cpp', 'sale.cpp', 'marketplace.cpp',
+       'excelreader.cpp', 'csvreader.cpp', 'jsonutil.cpp', 'utils.cpp']
+
+core_inc = include_directories('..')
+
+core_lib = static_library('core', src, dependencies: [boost, xlnt, sqlite, nlohmann_lib, csv_dep])
+
+core_dep = declare_dependency(link_with: core_lib, include_directories : core_inc)

src/core/sale.cpp

@@ -3,43 +3,41 @@
 
 #include <numeric>
 
-void Sale::addArticle(Article* articlePtr)
+void Sale::addArticle(Article *articlePtr)
 {
     articlePtr->setSale(this);
-    articles_.push_back(articlePtr);
+    m_articles.push_back(articlePtr);
 }
 
-ArticlesVec& Sale::getArticles() { return articles_; }
+ArticlesVec &Sale::getArticles() { return m_articles; }
 
-void Sale::removeArticle(const Article* articlePtr)
+void Sale::removeArticle(const Article *articlePtr)
 {
-    /* auto it = std::find_if(articles_.begin(), articles_.end(),
+    auto it = std::find(m_articles.begin(), m_articles.end(), articlePtr);
-                               [&articlePtr](auto art) { return art.get() == articlePtr; }); */
-    auto it = std::find(articles_.begin(), articles_.end(), articlePtr);
 
-    if (it != articles_.end()) {
+    if (it != m_articles.end()) {
         (*it)->setSale(nullptr);
         (*it)->setState(
             Article::State::DELETE); // since we only have ad-hoc articles, that have all been sold
-        articles_.erase(it);
+        m_articles.erase(it);
     }
 }
 
 int Sale::sumInCents()
 {
-    int sum = std::accumulate(articles_.begin(), articles_.end(), 0,
+    int sum = std::accumulate(m_articles.begin(), m_articles.end(), 0,
-                              [](int a, const Article* b) { return a + b->getPrice(); });
+                              [](int a, const Article *b) { return a + b->getPrice(); });
     return sum;
 }
 
 std::string Sale::sumAsString() { return formatCentAsEuroString(sumInCents()); }
 
-std::string Sale::getTimestamp() const { return timestamp_; }
+std::string Sale::getTimestamp() const { return m_timestamp; }
 
-void Sale::setTimestamp(const std::string& timestamp) { timestamp_ = timestamp; }
+void Sale::setTimestamp(const std::string &timestamp) { m_timestamp = timestamp; }
 
 std::string Sale::getTimestampFormatted() const
 {
-    boost::posix_time::ptime time = boost::posix_time::from_iso_extended_string(timestamp_);
+    boost::posix_time::ptime time = boost::posix_time::from_iso_extended_string(m_timestamp);
     return boost::posix_time::to_simple_string(time);
 }

src/core/sale.h

@@ -11,27 +11,30 @@
 
 namespace
 {
-using ArticlesVec = std::vector<Article*>;
+using ArticlesVec = std::vector<Article *>;
 }
 
-class Sale : public Entity
+class Sale : public EntityUuid
 {
-  public:
+public:
-    void addArticle(Article* articlePtr);
+    Sale() = default;
-    void setTimestamp(const std::string& timestamp);
+    Sale(const Sale &) = delete;
+    virtual ~Sale() = default;
+    void addArticle(Article *articlePtr);
+    void setTimestamp(const std::string &timestamp);
 
-    ArticlesVec& getArticles();
+    ArticlesVec &getArticles();
     std::string getTimestamp() const;
     std::string getTimestampFormatted() const;
     int sumInCents();
     std::string sumAsString();
 
-    void removeArticle(const Article* articlePtr);
+    void removeArticle(const Article *articlePtr);
 
-  private:
+private:
-    std::string timestamp_{
+    std::string m_timestamp{
         boost::posix_time::to_iso_extended_string(boost::posix_time::second_clock::local_time())};
-    mutable ArticlesVec articles_{};
+    mutable ArticlesVec m_articles{};
 };
 
 #endif

src/core/seller.cpp

@@ -5,50 +5,49 @@
 #include <numeric>
 #include <sstream>
 
-Seller::Seller(const std::string& firstName, const std::string& lastName, int sellerNo,
+Seller::Seller(const std::string &firstName, const std::string &lastName, int sellerNo,
                int numArticlesOffered)
-    : Entity()
+    : EntityInt(sellerNo)
 {
-    firstName_ = firstName;
+    m_firstName = firstName;
-    lastName_ = lastName;
+    m_lastName = lastName;
-    sellerNo_ = sellerNo;
+    m_numArticlesOffered = numArticlesOffered;
-    numArticlesOffered_ = numArticlesOffered;
 }
 
-void Seller::setSellerNo(int seller_no) { sellerNo_ = seller_no; }
+void Seller::setSellerNo(int seller_no) { setId(seller_no); }
 
-void Seller::setFirstName(const std::string& firstName) { firstName_ = firstName; }
+void Seller::setFirstName(const std::string &firstName) { m_firstName = firstName; }
 
-void Seller::setLastName(const std::string& lastName) { lastName_ = lastName; }
+void Seller::setLastName(const std::string &lastName) { m_lastName = lastName; }
 
-void Seller::setNumArticlesOffered(int number) { numArticlesOffered_ = number; }
+void Seller::setNumArticlesOffered(int number) { m_numArticlesOffered = number; }
 
 void Seller::addArticle(std::unique_ptr<Article> article)
 {
     article->setSeller(this);
-    articles_.push_back(std::move(article));
+    m_articles.push_back(std::move(article));
 }
 
-std::string Seller::getFirstName() const { return firstName_; }
+std::string Seller::getFirstName() const { return m_firstName; }
 
-std::string Seller::getLastName() const { return lastName_; }
+std::string Seller::getLastName() const { return m_lastName; }
 
-int Seller::getSellerNo() const { return sellerNo_; }
+int Seller::getSellerNo() const { return getId(); }
 
 std::string Seller::getSellerNoAsString() const
 {
     std::stringstream selNoStr;
 
-    selNoStr << std::setfill('0') << std::setw(3) << sellerNo_;
+    selNoStr << std::setfill('0') << std::setw(3) << m_id;
 
     return selNoStr.str();
     ;
 }
 
-std::vector<Article*> Seller::getArticles(bool onlySold) const
+std::vector<Article *> Seller::getArticles(bool onlySold) const
 {
-    std::vector<Article*> articles;
+    std::vector<Article *> articles;
-    for (const auto& article : articles_) {
+    for (const auto &article : m_articles) {
         if (onlySold && article->isSold()) {
             articles.push_back(article.get());
         } else if (!onlySold) {
@@ -58,54 +57,54 @@ std::vector<Article*> Seller::getArticles(bool onlySold) const
     return articles;
 }
 
-Article* Seller::getArticleByUuid(const std::string& uuidString)
+Article *Seller::getArticleByUuid(const std::string &uuidString)
 {
-    auto iter = std::find_if(articles_.begin(), articles_.end(), [&uuidString](const auto& art) {
+    auto iter = std::find_if(m_articles.begin(), m_articles.end(), [&uuidString](const auto &art) {
         return art->getUuidAsString() == uuidString;
     });
-    if (iter == articles_.end())
+    if (iter == m_articles.end())
         return nullptr;
     return (*iter).get();
 }
 
 int Seller::numArticlesSold() const { return static_cast<int>(getArticles(true).size()); }
 
-int Seller::numArticlesOffered() const { return numArticlesOffered_; }
+int Seller::numArticlesOffered() const { return m_numArticlesOffered; }
 
 int Seller::getMaxArticleNo() const
 {
     auto iter = std::max_element(
-        articles_.begin(), articles_.end(),
+        m_articles.begin(), m_articles.end(),
-        [](const auto& a, const auto& b) -> bool { return a->getArticleNo() < b->getArticleNo(); });
+        [](const auto &a, const auto &b) -> bool { return a->getArticleNo() < b->getArticleNo(); });
-    if (iter == articles_.end())
+    if (iter == m_articles.end())
         return 0;
     return (*iter)->getArticleNo();
 }
 
 void Seller::cleanupArticles()
 {
-    articles_.erase(std::remove_if(articles_.begin(), articles_.end(),
+    m_articles.erase(std::remove_if(m_articles.begin(), m_articles.end(),
-                                   [](const auto& article) {
+                                   [](const auto &article) {
                                        return article->getState() == Article::State::DELETE;
                                    }),
-                    articles_.end());
+                    m_articles.end());
 
-    for (auto& article : articles_) {
+    for (auto &article : m_articles) {
         article->setState(Article::State::OK);
     }
 }
 
 int Seller::sumInCents()
 {
-    int sum = std::accumulate(articles_.begin(), articles_.end(), 0,
+    int sum = std::accumulate(m_articles.begin(), m_articles.end(), 0,
-                              [](int a, const auto& b) { return a + b->getPrice(); });
+                              [](int a, const auto &b) { return a + b->getPrice(); });
     return sum;
 }
 
 std::string Seller::sumAsString() { return formatCentAsEuroString(sumInCents()); }
 
-bool operator<(const Seller& li, const Seller& re) { return li.sellerNo_ < re.sellerNo_; }
+bool operator<(const Seller &li, const Seller &re) { return li.m_id < re.m_id; }
-bool operator<(const std::unique_ptr<Seller>& li, const std::unique_ptr<Seller>& re)
+bool operator<(const std::unique_ptr<Seller> &li, const std::unique_ptr<Seller> &re)
 {
-    return li->sellerNo_ < re->sellerNo_;
+    return li->m_id < re->m_id;
 }

src/core/seller.h

@@ -2,7 +2,7 @@
 #define SELLER_H
 
 #include "article.h"
-#include "entity.h"
+#include "entityint.h"
 
 #include <memory>
 #include <string>
@@ -10,17 +10,18 @@
 
 // class Article;
 
-class Seller : public Entity
+class Seller : public EntityInt
 {
-  public:
+public:
     Seller() = default;
-    // virtual ~Seller() = default;
+    Seller(const Seller &) = delete;
-    Seller(const std::string& firstName, const std::string& lastName, int sellerNo = 0,
+    virtual ~Seller() = default;
+    Seller(const std::string &firstName, const std::string &lastName, int sellerNo = 0,
            int numArticlesOffered = 0);
 
     void setSellerNo(int sellerNo);
-    void setFirstName(const std::string& firstName);
+    void setFirstName(const std::string &firstName);
-    void setLastName(const std::string& lastName);
+    void setLastName(const std::string &lastName);
     void setNumArticlesOffered(int number);
     void addArticle(std::unique_ptr<Article> article);
     void cleanupArticles();
@@ -31,22 +32,20 @@ class Seller : public Entity
     std::string getSellerNoAsString() const;
     int numArticlesOffered() const;
     int numArticlesSold() const;
-    // int numArticlesTotal() const;
+    std::vector<Article *> getArticles(bool onlySold = true) const;
-    std::vector<Article*> getArticles(bool onlySold = true) const;
+    Article *getArticleByUuid(const std::string &uuidString);
-    Article* getArticleByUuid(const std::string& uuidString);
     int getMaxArticleNo() const;
     int sumInCents();
     std::string sumAsString();
 
-    friend bool operator<(const Seller& li, const Seller& re);
+    friend bool operator<(const Seller &li, const Seller &re);
-    friend bool operator<(const std::unique_ptr<Seller>& li, const std::unique_ptr<Seller>& re);
+    friend bool operator<(const std::unique_ptr<Seller> &li, const std::unique_ptr<Seller> &re);
 
-  private:
+private:
-    int sellerNo_{-1};
+    int m_numArticlesOffered{};
-    int numArticlesOffered_{};
+    std::string m_firstName{};
-    std::string firstName_{};
+    std::string m_lastName{};
-    std::string lastName_{};
+    std::vector<std::unique_ptr<Article>> m_articles{};
-    std::vector<std::unique_ptr<Article>> articles_{};
 };
 
 #endif

src/core/utils.cpp

@@ -1,46 +1,70 @@
 #include "utils.h"
 
+#include <algorithm>
+#include <clocale>
+#include <format>
 #include <iomanip>
 #include <numeric>
 
+#include <iostream>
+
+//using namespace fmt;
+
 std::string formatCentAsEuroString(const int cent, int width)
 {
-    std::stringstream currStream;
+    /*std::stringstream currStream;
 
     try {
         std::locale myLocale("de_DE.utf8");
         currStream.imbue(myLocale);
+        std::cout << ">>> " << fmt::format(myLocale, "{:6.2Lf}", 1.12345) << '\n';
         currStream << std::right << std::setw(width) << std::showbase
                    << std::put_money(cent, false);
-    } catch (std::runtime_error& err) {
+    } catch (std::runtime_error &err) {
         currStream << std::fixed << std::setw(width >= 4 ? width - 4 : width)
                    << std::setprecision(2) << cent / 100.0L << " €";
     }
 
-    return currStream.str();
+    return currStream.str();*/
+
+#if defined(_WIN64) || defined(_WIN32)
+    std::locale myLocale;
+#else
+    std::locale myLocale{"de_DE.utf8"};
+#endif
+    return std::format(myLocale, "{:{}.2Lf} €", cent / 100.0L, width);
 }
 
-std::optional<PrinterDevice> convertToPosPrinterDevice(const std::string& device,
+std::string &ltrim(std::string &str, const std::string &chars)
-                                                       const std::string& endpoint)
 {
-    if (device.empty()) {
+    str.erase(0, str.find_first_not_of(chars));
-        return std::nullopt;
+    return str;
-    }
+}
-
+
-    PrinterDevice printerDevice;
+std::string &rtrim(std::string &str, const std::string &chars)
-    std::string delimiter = ":";
+{
-    try {
+    str.erase(str.find_last_not_of(chars) + 1);
-        printerDevice.idVendor = std::stoi(device.substr(0, device.find(delimiter)), 0, 16);
+    return str;
-        printerDevice.idProduct = std::stoi(device.substr(device.find(delimiter) + 1), 0, 16);
+}
-        if (endpoint.empty()) {
+
-            printerDevice.endpoint = 0x03;
+std::string &trim(std::string &str, const std::string &chars)
-        } else {
+{
-            printerDevice.endpoint = std::stoi(endpoint, 0, 16);
+    return ltrim(rtrim(str, chars), chars);
-        }
+}
-
+
-    } catch (std::exception& ex) {
+bool case_insensitive_match(std::string s1, std::string s2)
-        throw ex;
+{
-    }
+    // convert s1 and s2 into lower case strings
-
+    transform(s1.begin(), s1.end(), s1.begin(), ::tolower);
-    return printerDevice;
+    transform(s2.begin(), s2.end(), s2.begin(), ::tolower);
+    if (s1.compare(s2) == 0)
+        return true; // The strings are same
+    return false;    // not matched
+}
+
+bool isNumber(const std::string &str)
+{
+    return !str.empty() && std::find_if(str.begin(), str.end(), [](unsigned char c) {
+                               return !std::isdigit(c);
+                           }) == str.end();
 }

src/core/utils.h

@@ -1,14 +1,15 @@
-#ifndef UTILS_H
+#ifndef CORE_UTILS_H
-#define UTILS_H
+#define CORE_UTILS_H
-
-#include "posprinter.h"
 
 #include <locale>
 #include <optional>
 #include <string>
 
-std::string formatCentAsEuroString(const int cent, int width = 10);
+std::string formatCentAsEuroString(const int cent, int width = 6);
-std::optional<PrinterDevice> convertToPosPrinterDevice(const std::string& vendor,
+std::string &ltrim(std::string &str, const std::string &chars = "\t\n\v\f\r ");
-                                                       const std::string& endpoint);
+std::string &rtrim(std::string &str, const std::string &chars = "\t\n\v\f\r ");
+std::string &trim(std::string &str, const std::string &chars = "\t\n\v\f\r ");
+bool case_insensitive_match(std::string s1, std::string s2);
+bool isNumber(const std::string &str);
 
 #endif

src/gui/CMakeLists.txt

@@ -8,8 +8,14 @@ set(CMAKE_AUTOUIC ON)
 set(CMAKE_AUTORCC ON)
 
 # Find the QtWidgets library
-find_package(Qt5Widgets CONFIG REQUIRED)
+find_package(Qt6 COMPONENTS Widgets Network PrintSupport CONFIG REQUIRED)
-find_package(Qt5PrintSupport CONFIG REQUIRED)
+#find_package(Qt5Widgets CONFIG REQUIRED)
+#find_package(Qt5PrintSupport CONFIG REQUIRED)
+
+# For SingleApplication:
+#find_package(Qt5Network CONFIG REQUIRED)
+set(QAPPLICATION_CLASS QApplication)
+add_compile_definitions(QAPPLICATION_CLASS=${QAPPLICATION_CLASS})
 
 set(GUI_SOURCES
     kima2.cpp
@@ -28,11 +34,16 @@ set(GUI_SOURCES
     settingsdialog.cpp
     settingsdialog.ui
     ../../kima2.qrc
+    ${PROJECT_SOURCE_DIR}/subprojects/singleapplication/singleapplication.git/singleapplication.cpp
+    ${PROJECT_SOURCE_DIR}/subprojects/singleapplication/singleapplication.git/singleapplication_p.cpp
 )
 
 add_executable(kima2 ${GUI_SOURCES} kima2.rc)
 target_include_directories(kima2 PRIVATE ${PROJECT_BINARY_DIR})
-target_link_libraries(kima2 core printer Qt5::Widgets Qt5::PrintSupport stdc++fs)
+target_include_directories(kima2 PRIVATE ${PROJECT_SOURCE_DIR}/subprojects/singleapplication/singleapplication.git)
+# target_link_libraries(kima2 core printer Qt5::Widgets Qt5::PrintSupport Qt5::Network stdc++fs)
+target_link_libraries(kima2 core printer Qt::Core Qt::PrintSupport Qt::Network)
+
 if(WIN32)
     set_target_properties(kima2 PROPERTIES LINK_FLAGS "-mwindows")
 endif(WIN32)

src/gui/basketmodel.cpp

@@ -1,17 +1,17 @@
 #include "basketmodel.h"
 
 #include <QFont>
-#include <QSettings>
 #include <QFontDatabase>
+#include <QSettings>
 
 BasketModel::BasketModel(Marketplace* market, QObject* parent)
-    : QAbstractTableModel(parent), marketplace_(market)
+    : QAbstractTableModel(parent), m_marketplace(market)
 {
 }
 
 int BasketModel::rowCount([[maybe_unused]] const QModelIndex& parent) const
 {
-    return static_cast<int>(marketplace_->basketSize());
+    return static_cast<int>(m_marketplace->basketSize());
 }
 
 int BasketModel::columnCount([[maybe_unused]] const QModelIndex& parent) const { return 4; }
@@ -22,7 +22,7 @@ QVariant BasketModel::data(const QModelIndex& index, int role) const
         QFont myFont;
 
         QFont myFixedFont = QFontDatabase::systemFont(QFontDatabase::FixedFont);
-	if (myFixedFont.fixedPitch() == false) {
+        if (myFixedFont.fixedPitch() == false) {
             myFixedFont.setFamily("monospace");
         }
 
@@ -46,10 +46,10 @@ QVariant BasketModel::data(const QModelIndex& index, int role) const
     if (role != Qt::DisplayRole)
         return QVariant();
 
-    if (marketplace_->basketSize() == 0)
+    if (m_marketplace->basketSize() == 0)
         return QVariant();
 
-    Article* article = marketplace_->getBasket().at(index.row()).get();
+    Article* article = m_marketplace->getBasket().at(index.row()).get();
 
     switch (index.column()) {
     case 0:
@@ -92,45 +92,45 @@ QVariant BasketModel::headerData(int section, Qt::Orientation orientation, int r
 
 void BasketModel::addArticle(Seller* seller, int price, const std::string& desc)
 {
-    emit beginInsertRows(QModelIndex(), marketplace_->getBasket().size(),
+    emit beginInsertRows(QModelIndex(), m_marketplace->getBasket().size(),
-                         marketplace_->getBasket().size());
+                         m_marketplace->getBasket().size());
     auto article = std::make_unique<Article>(price);
     article->createUuid();
     article->setDescription(desc);
-    article->setArticleNo(marketplace_->getNextArticleNo());
+    article->setArticleNo(m_marketplace->getNextArticleNo());
     article->setSourceNo(QSettings().value("global/cashPointNo").toInt());
     article->setSeller(seller);
-    marketplace_->addArticleToBasket(std::move(article));
+    m_marketplace->addArticleToBasket(std::move(article));
     emit endInsertRows();
 }
 
 void BasketModel::finishSale()
 {
-    emit beginRemoveRows(QModelIndex(), 0, marketplace_->getBasket().size() - 1);
+    emit beginRemoveRows(QModelIndex(), 0, m_marketplace->getBasket().size() - 1);
     auto sale = std::make_unique<Sale>();
     sale->createUuid();
     sale->setSourceNo(QSettings().value("global/cashPointNo").toInt());
-    marketplace_->finishCurrentSale(std::move(sale));
+    m_marketplace->finishCurrentSale(std::move(sale));
     emit endRemoveRows();
     emit basketDataChanged();
 }
 
 void BasketModel::cancelSale()
 {
-    emit beginRemoveRows(QModelIndex(), 0, marketplace_->getBasket().size() - 1);
+    emit beginRemoveRows(QModelIndex(), 0, m_marketplace->getBasket().size() - 1);
-    marketplace_->getBasket().clear();
+    m_marketplace->getBasket().clear();
     emit endRemoveRows();
 }
 
 bool BasketModel::removeRows(int row, int count, const QModelIndex& parent)
 {
-    auto article = marketplace_->getBasket().at(row).get();
+    auto article = m_marketplace->getBasket().at(row).get();
 
     emit beginRemoveRows(parent, row, row + count - 1);
-    marketplace_->getBasket().erase(
+    m_marketplace->getBasket().erase(
-        std::remove_if(marketplace_->getBasket().begin(), marketplace_->getBasket().end(),
+        std::remove_if(m_marketplace->getBasket().begin(), m_marketplace->getBasket().end(),
                        [&article](const auto& a) { return a->getUuid() == article->getUuid(); }),
-        marketplace_->getBasket().end());
+        m_marketplace->getBasket().end());
     emit endRemoveRows();
     return true;
 }

src/gui/basketmodel.h

@@ -1,13 +1,13 @@
 #ifndef BASKET_MODEL_H
 #define BASKET_MODEL_H
 
-#include <marketplace.h>
+#include <core/marketplace.h>
 
 #include <QAbstractTableModel>
 
 class BasketModel : public QAbstractTableModel
 {
-  Q_OBJECT
+    Q_OBJECT
 
   public:
     explicit BasketModel(Marketplace* market, QObject* parent = nullptr);
@@ -15,19 +15,16 @@ class BasketModel : public QAbstractTableModel
     virtual int columnCount(const QModelIndex& parent = QModelIndex()) const override;
     virtual QVariant data(const QModelIndex& index, int role = Qt::DisplayRole) const override;
     virtual QVariant headerData(int section, Qt::Orientation orientation, int role) const override;
-    //virtual Qt::ItemFlags flags(const QModelIndex& index) const override;
-    //virtual bool setData(const QModelIndex& index, const QVariant& value, int role = Qt::EditRole) override;
-    //virtual bool insertRows(int row, int count, const QModelIndex& parent = QModelIndex()) override;
     void addArticle(Seller* seller, int price, const std::string& desc);
     void finishSale();
     void cancelSale();
     virtual bool removeRows(int row, int count, const QModelIndex& parent = QModelIndex()) override;
 
-    signals:
+  signals:
     void basketDataChanged();
 
   private:
-    Marketplace* marketplace_;
+    Marketplace* m_marketplace;
 };
 
 #endif

src/gui/kima2.cpp

@@ -6,26 +6,27 @@
 #include <QLibraryInfo>
 #include <QMessageBox>
 #include <QSettings>
+#include <QSharedMemory>
+#include <QStyleFactory>
 #include <QTranslator>
 
-int main(int argc, char* argv[])
+#include <singleapplication.h>
+#include <stdexcept>
+
+int main(int argc, char *argv[])
 {
-    QApplication kimaApp{argc, argv};
+    SingleApplication kimaApp(argc, argv, false, SingleApplication::Mode::User | SingleApplication::ExcludeAppPath | SingleApplication::ExcludeAppVersion);
 
     // QCoreApplication::setOrganizationName("RustySoft");
     QCoreApplication::setOrganizationDomain("rustysoft.de");
     QCoreApplication::setApplicationName("kima2");
 
-    QTranslator qTranslator;
+    QTranslator qtTranslator;
-    QLocale german(QLocale::German);
+
-#ifdef __linux__
+    if (qtTranslator.load(QLocale::system(), u"qtbase"_qs, u"_"_qs,
-    qTranslator.load("qt_" + german.name(), QLibraryInfo::location(QLibraryInfo::TranslationsPath));
+                         QLibraryInfo::path(QLibraryInfo::TranslationsPath))) {
-#endif
+        kimaApp.installTranslator(&qtTranslator);
-#ifdef _WIN32
+    }
-    qTranslator.load("qt_" + german.name(),
-                     QApplication::applicationDirPath() + QDir::separator() + "translations");
-#endif
-    kimaApp.installTranslator(&qTranslator);
 
     QSettings settings{};
     while (!settings.contains("global/cashPointNo")) {

src/gui/mainwindow.cpp

@@ -1,22 +1,23 @@
 #include "mainwindow.h"
 
 #include "basketmodel.h"
-#include "config.h"
-#include "jsonutil.h"
 #include "pricedialog.h"
 #include "reportdialog.h"
 #include "salemodel.h"
 #include "sellerdialog.h"
 #include "settingsdialog.h"
+#include <config.h>
 
-#include <utils.h>
+#include <core/csvreader.h>
-
+#include <core/jsonutil.h>
-#include <excelreader.h>
+#include <core/utils.h>
-#include <posprinter.h>
+#include <printer/posprinter.h>
+#include <printer/utils.h>
 
 #include <exception>
 #include <filesystem>
 #include <regex>
+#include <string>
 
 #include <QFileDialog>
 #include <QMessageBox>
@@ -30,23 +31,31 @@ constexpr int STATUSBAR_TIMEOUT = 5000;
 
 MainWindow::MainWindow()
 {
-    ui_.setupUi(this);
+    m_ui.setupUi(this);
 
-    marketplace_ = std::make_unique<Marketplace>();
+    m_marketplace = std::make_unique<Marketplace>();
-    marketplace_->loadFromDb();
+    Database::InitResult res = m_marketplace->loadFromDb();
+    if (res == Database::InitResult::OUTDATED_REPLACED) {
+        QMessageBox(QMessageBox::Icon::Information, "Datenbankinformation",
+                    "Es wurde eine <b>veraltete</b> Datenbankdatei erkannt.<br />Diese wurde "
+                    "umbenannt und eine <b>neue</b> Datei wurde erstellt.")
+            .exec();
+    }
     statusBar()->showMessage("Gespeicherte Daten wurden geladen.", STATUSBAR_TIMEOUT);
 
-    BasketModel* model = new BasketModel(getMarketplace(), ui_.basketView);
+    BasketModel *model = new BasketModel(getMarketplace(), m_ui.basketView);
-    ui_.basketView->setModel(model);
+    m_ui.basketView->setModel(model);
-    ui_.basketView->setColumnHidden(0, true); // hide the uuid
+    m_ui.basketView->setColumnHidden(0, true); // hide the uuid
 
     setWindowTitle("KIMA2 - Kasse Nr. " + QSettings().value("global/cashPointNo").toString());
 
+    m_ui.salesView->header()->setSectionResizeMode(QHeaderView::ResizeToContents);
     setSaleModel();
 
-    connect(ui_.actionQuit, &QAction::triggered, qApp, QApplication::quit);
+    connect(m_ui.actionQuit, &QAction::triggered, qApp, QApplication::closeAllWindows,
-    connect(ui_.newAction, &QAction::triggered, this, [=]() {
+            Qt::QueuedConnection);
-        if (marketplace_->getSellers().size() == 0 && marketplace_->getSales().size() == 0) {
+    connect(m_ui.newAction, &QAction::triggered, this, [this]() {
+        if (m_marketplace->getSellers().size() == 0 && m_marketplace->getSales().size() == 0) {
             return;
         }
         auto dlgResult =
@@ -58,46 +67,45 @@ MainWindow::MainWindow()
         if (dlgResult == QMessageBox::No)
             return;
 
-        delete ui_.salesView->model();
+        delete m_ui.salesView->model();
-        dynamic_cast<BasketModel*>(ui_.basketView->model())->cancelSale();
+        dynamic_cast<BasketModel *>(m_ui.basketView->model())->cancelSale();
-        marketplace_->clear();
+        m_marketplace->clear();
         setSaleModel();
         updateStatLabel();
     });
 
-    ui_.sellerNoEdit->installEventFilter(this);
+    m_ui.sellerNoEdit->installEventFilter(this);
-    ui_.givenSpinBox->installEventFilter(this);
+    m_ui.givenSpinBox->installEventFilter(this);
 
-    connect(ui_.actionEditSeller, &QAction::triggered, this,
+    connect(m_ui.actionEditSeller, &QAction::triggered, this,
             &MainWindow::onActionEditSellerTriggered);
-    connect(ui_.paidButton, &QPushButton::clicked, this, &MainWindow::onPaidButtonTriggered);
+    connect(m_ui.paidButton, &QPushButton::clicked, this, &MainWindow::onPaidButtonTriggered);
-    connect(ui_.givenSpinBox, QOverload<double>::of(&QDoubleSpinBox::valueChanged), this,
+    connect(m_ui.givenSpinBox, QOverload<double>::of(&QDoubleSpinBox::valueChanged), this,
             &MainWindow::onGivenSpinBoxValueChanged);
-    connect(ui_.basketView->selectionModel(), &QItemSelectionModel::selectionChanged, this,
+    connect(m_ui.basketView->selectionModel(), &QItemSelectionModel::selectionChanged, this,
             &MainWindow::onBasketViewSelectionChanged);
-    connect(ui_.cancelArticleButton, &QPushButton::clicked, this,
+    connect(m_ui.cancelArticleButton, &QPushButton::clicked, this,
             &MainWindow::onCancelArticleButtonClicked);
-    connect(ui_.cancelSaleButton, &QPushButton::clicked, this,
+    connect(m_ui.cancelSaleButton, &QPushButton::clicked, this,
             &MainWindow::onCancelSaleButtonClicked);
-    connect(ui_.printSaleReceiptButton, &QPushButton::clicked, this,
+    connect(m_ui.printSaleReceiptButton, &QPushButton::clicked, this,
             &MainWindow::onPrintSaleReceiptButtonClicked);
-    connect(ui_.cancelAllArticlesButton, &QPushButton::clicked, this,
+    connect(m_ui.cancelAllArticlesButton, &QPushButton::clicked, this,
             &MainWindow::onCancelAllArticlesButtonClicked);
-    connect(ui_.aboutQtAction, &QAction::triggered, this, &MainWindow::onAboutQt);
+    connect(m_ui.aboutQtAction, &QAction::triggered, this, &MainWindow::onAboutQt);
-    connect(ui_.aboutAction, &QAction::triggered, this, &MainWindow::onAbout);
+    connect(m_ui.aboutAction, &QAction::triggered, this, &MainWindow::onAbout);
-    connect(ui_.openManualAction, &QAction::triggered, this, []() {
+    connect(m_ui.openManualAction, &QAction::triggered, this, []() {
-        auto locations = QStandardPaths::standardLocations(QStandardPaths::DataLocation);
+        auto locations = QStandardPaths::standardLocations(QStandardPaths::AppDataLocation);
         for (auto location : locations) {
             if (QFile::exists(location + QString("/Benutzerhandbuch.pdf"))) {
                 QDesktopServices::openUrl(
-                    QUrl(QString("file:///") + location + QString("/Benutzerhandbuch.pdf"),
+                    QUrl::fromLocalFile(location + QString("/Benutzerhandbuch.pdf")));
-                         QUrl::TolerantMode));
             }
         }
     });
-    connect(ui_.licenseAction, &QAction::triggered, this, [=]() {
+    connect(m_ui.licenseAction, &QAction::triggered, this, [this]() {
         QString licenseText(
-            "Copyright © 2018 Martin Brodbeck\n\n"
+            "Copyright © 2018-2024 Martin Brodbeck\n\n"
             "Hiermit wird unentgeltlich jeder Person, die eine Kopie der Software und der "
             "zugehörigen Dokumentationen (die \"Software\") erhält, die Erlaubnis erteilt, "
             "sie uneingeschränkt zu nutzen, inklusive und ohne Ausnahme mit dem Recht, "
@@ -116,32 +124,30 @@ MainWindow::MainWindow()
             "SOFTWARE ODER SONSTIGER VERWENDUNG DER SOFTWARE ENTSTANDEN.");
         QMessageBox::information(this, "Lizenzinformation", licenseText);
     });
-    connect(ui_.reportAction, &QAction::triggered, this, [=]() { ReportDialog(this).exec(); });
+    connect(m_ui.reportAction, &QAction::triggered, this, [this]() { ReportDialog(this).exec(); });
-    connect(ui_.configAction, &QAction::triggered, this, [=]() {
+    connect(m_ui.configAction, &QAction::triggered, this, [this]() {
         int result = SettingsDialog(this).exec();
         if (result == QDialog::Accepted) {
-            delete ui_.salesView->model();
+            delete m_ui.salesView->model();
-            marketplace_->loadFromDb();
+            m_marketplace->loadFromDb();
             setSaleModel();
         }
         this->setWindowTitle("KIMA2 - Kasse Nr. " +
                              QSettings().value("global/cashPointNo").toString());
     });
-    connect(ui_.importSellerExcelAction, &QAction::triggered, this,
+    connect(m_ui.importSellerAction, &QAction::triggered, this,
-            &MainWindow::onImportSellerExcelActionTriggered);
+            &MainWindow::onImportSellerActionTriggered);
-    connect(ui_.importSellerJsonAction, &QAction::triggered, this,
+    connect(m_ui.exportSalesJsonAction, &QAction::triggered, this,
-            &MainWindow::onImportSellerJsonActionTriggered);
-    connect(ui_.exportSellerJsonAction, &QAction::triggered, this,
-            &MainWindow::onExportSellerJsonActionTriggered);
-    connect(ui_.exportSalesJsonAction, &QAction::triggered, this,
             &MainWindow::onExportSalesJsonActionTriggered);
-    connect(ui_.importSalesJsonAction, &QAction::triggered, this,
+    connect(m_ui.importSalesJsonAction, &QAction::triggered, this,
             &MainWindow::onImportSalesJsonActionTriggered);
 
     readGeometry();
     setWindowIcon(QIcon(":/misc/kima2.ico"));
 
     updateStatLabel();
+    m_ui.lastPriceLabel1->setText(formatCentAsEuroString(0).c_str());
+    m_ui.lastPriceLabel2->setText(formatCentAsEuroString(0).c_str());
 }
 
 void MainWindow::onActionEditSellerTriggered()
@@ -149,11 +155,11 @@ void MainWindow::onActionEditSellerTriggered()
     auto dialog = std::make_unique<SellerDialog>(this);
     int retCode = dialog->exec();
 
-    delete ui_.salesView->model();
+    delete m_ui.salesView->model();
 
     if (retCode == QDialog::Accepted) {
-        marketplace_->sortSellers();
+        m_marketplace->sortSellers();
-        marketplace_->storeToDb();
+        m_marketplace->storeToDb();
         statusBar()->showMessage("Änderungen an den Verkäufer-Stammdaten gespeichert.",
                                  STATUSBAR_TIMEOUT);
     } else {
@@ -167,43 +173,44 @@ void MainWindow::onActionEditSellerTriggered()
 
 void MainWindow::setSaleModel()
 {
-    ui_.salesView->setModel(new SaleModel(getMarketplace(), ui_.salesView));
+    m_ui.salesView->setModel(new SaleModel(getMarketplace(), m_ui.salesView));
-    ui_.salesView->setColumnHidden(2, true);
+    m_ui.salesView->setColumnHidden(2, true);
-    ui_.salesView->resizeColumnToContents(0);
+    m_ui.salesView->resizeColumnToContents(0);
+    m_ui.salesView->resizeColumnToContents(1);
 
-    ui_.printSaleReceiptButton->setEnabled(false);
+    m_ui.printSaleReceiptButton->setEnabled(false);
-    ui_.cancelSaleButton->setEnabled(false);
+    m_ui.cancelSaleButton->setEnabled(false);
 
-    connect(static_cast<BasketModel*>(ui_.basketView->model()), &BasketModel::basketDataChanged,
+    connect(static_cast<BasketModel *>(m_ui.basketView->model()), &BasketModel::basketDataChanged,
-            static_cast<SaleModel*>(ui_.salesView->model()), &SaleModel::onBasketDataChanged);
+            static_cast<SaleModel *>(m_ui.salesView->model()), &SaleModel::onBasketDataChanged);
-    connect(ui_.salesView->selectionModel(), &QItemSelectionModel::selectionChanged, this,
+    connect(m_ui.salesView->selectionModel(), &QItemSelectionModel::selectionChanged, this,
             &MainWindow::onSalesViewSelectionChanged);
 }
 
 void MainWindow::onPaidButtonTriggered()
 {
-    if (marketplace_->basketSize() > 0) {
+    if (m_marketplace->basketSize() > 0) {
-        QString lastPrice{marketplace_->getBasketSumAsString().c_str()};
+        QString lastPrice{m_marketplace->getBasketSumAsString().c_str()};
-        dynamic_cast<BasketModel*>(ui_.basketView->model())->finishSale();
+        dynamic_cast<BasketModel *>(m_ui.basketView->model())->finishSale();
-        ui_.salesView->resizeColumnToContents(0);
+        m_ui.salesView->resizeColumnToContents(0);
-        ui_.lastPriceLabel1->setText(lastPrice);
+        m_ui.lastPriceLabel1->setText(lastPrice);
-        ui_.lastPriceLabel2->setText(lastPrice);
+        m_ui.lastPriceLabel2->setText(lastPrice);
-        ui_.basketSumLabel->setText(formatCentAsEuroString(0).c_str());
+        m_ui.basketSumLabel->setText(formatCentAsEuroString(0).c_str());
-        ui_.drawbackLabel->setText(formatCentAsEuroString(0).c_str());
+        m_ui.drawbackLabel->setText(formatCentAsEuroString(0).c_str());
-        ui_.drawbackContainerWidget->setEnabled(false);
+        m_ui.drawbackContainerWidget->setEnabled(false);
-        ui_.sellerNoEdit->setFocus();
+        m_ui.sellerNoEdit->setFocus();
         statusBar()->showMessage("Verkaufsvorgang erfolgreich durchgeführt.", STATUSBAR_TIMEOUT);
         updateStatLabel();
     }
 }
 
-bool MainWindow::eventFilter(QObject* target, QEvent* event)
+bool MainWindow::eventFilter(QObject *target, QEvent *event)
 {
-    if (target == ui_.sellerNoEdit) {
+    if (target == m_ui.sellerNoEdit) {
         if (event->type() == QEvent::KeyPress) {
-            QKeyEvent* keyEvent = static_cast<QKeyEvent*>(event);
+            QKeyEvent *keyEvent = static_cast<QKeyEvent *>(event);
             if (keyEvent->key() == Qt::Key::Key_Enter || keyEvent->key() == Qt::Key::Key_Return) {
-                if (keyEvent->modifiers() == Qt::ControlModifier) {
+                if (keyEvent->modifiers() & Qt::ControlModifier) {
                     checkSellerNo(true);
                 } else {
                     checkSellerNo(false);
@@ -212,18 +219,18 @@ bool MainWindow::eventFilter(QObject* target, QEvent* event)
                 return true;
             }
         }
-    } else if (target == ui_.givenSpinBox) {
+    } else if (target == m_ui.givenSpinBox) {
         if (event->type() == QEvent::KeyPress) {
-            QKeyEvent* keyEvent = static_cast<QKeyEvent*>(event);
+            QKeyEvent *keyEvent = static_cast<QKeyEvent *>(event);
             if (keyEvent->key() == Qt::Key::Key_Enter || keyEvent->key() == Qt::Key::Key_Return) {
-                if (keyEvent->modifiers() == Qt::ControlModifier) {
+                if (keyEvent->modifiers() & Qt::ControlModifier) {
                     onPaidButtonTriggered();
                     return true;
                 }
             } else if (keyEvent->key() == Qt::Key::Key_Escape) {
-                ui_.drawbackLabel->setText(formatCentAsEuroString(0).c_str());
+                m_ui.drawbackLabel->setText(formatCentAsEuroString(0).c_str());
-                ui_.drawbackContainerWidget->setEnabled(false);
+                m_ui.drawbackContainerWidget->setEnabled(false);
-                ui_.sellerNoEdit->setFocus();
+                m_ui.sellerNoEdit->setFocus();
             }
         }
     }
@@ -234,15 +241,15 @@ void MainWindow::checkSellerNo(bool ctrlPressed)
 {
     using std::regex, std::regex_match, std::smatch;
 
-    auto inputText = ui_.sellerNoEdit->text().toStdString();
+    auto inputText = m_ui.sellerNoEdit->text().toStdString();
 
     if (inputText.empty()) {
         if (ctrlPressed == false) {
             onPaidButtonTriggered();
-        } else if (marketplace_->getBasket().size() > 0) {
+        } else if (m_marketplace->getBasket().size() > 0) {
-            ui_.drawbackContainerWidget->setEnabled(true);
+            m_ui.drawbackContainerWidget->setEnabled(true);
-            ui_.givenSpinBox->setFocus();
+            m_ui.givenSpinBox->setFocus();
-            ui_.givenSpinBox->selectAll();
+            m_ui.givenSpinBox->selectAll();
         }
         return;
     }
@@ -251,13 +258,13 @@ void MainWindow::checkSellerNo(bool ctrlPressed)
     smatch result;
 
     if (!regex_match(inputText, result, pattern)) {
-        ui_.sellerNoEdit->clear();
+        m_ui.sellerNoEdit->clear();
         return;
     }
 
     int sellerNo = std::stoi(result[0]);
 
-    auto seller = marketplace_->findSellerWithSellerNo(sellerNo);
+    auto seller = m_marketplace->findSellerWithSellerNo(sellerNo);
     if (seller) {
         PriceDialog priceDialog(this);
         if (sellerNo == 0) {
@@ -267,52 +274,52 @@ void MainWindow::checkSellerNo(bool ctrlPressed)
         if (dialogResult == QDialog::Accepted) {
             int price = priceDialog.getPrice();
             std::string desc = priceDialog.getDescription();
-            dynamic_cast<BasketModel*>(ui_.basketView->model())->addArticle(seller, price, desc);
+            dynamic_cast<BasketModel *>(m_ui.basketView->model())->addArticle(seller, price, desc);
-            ui_.basketView->resizeColumnToContents(1);
+            m_ui.basketView->resizeColumnToContents(1);
-            ui_.basketSumLabel->setText(marketplace_->getBasketSumAsString().c_str());
+            m_ui.basketSumLabel->setText(m_marketplace->getBasketSumAsString().c_str());
         }
     }
 
-    ui_.sellerNoEdit->clear();
+    m_ui.sellerNoEdit->clear();
 }
 
 void MainWindow::onGivenSpinBoxValueChanged(double value)
 {
     int givenInCent = std::round(value * 100);
-    int basketSumInCent = marketplace_->getBasketSumInCent();
+    int basketSumInCent = m_marketplace->getBasketSumInCent();
     int drawback = givenInCent - basketSumInCent;
-    ui_.drawbackLabel->setText(formatCentAsEuroString(drawback).c_str());
+    m_ui.drawbackLabel->setText(formatCentAsEuroString(drawback).c_str());
 }
 
-void MainWindow::onBasketViewSelectionChanged(const QItemSelection& selected,
+void MainWindow::onBasketViewSelectionChanged(const QItemSelection &selected,
-                                              [[maybe_unused]] const QItemSelection& deselected)
+                                              [[maybe_unused]] const QItemSelection &deselected)
 {
     if (selected.size() > 0) {
-        ui_.cancelArticleButton->setEnabled(true);
+        m_ui.cancelArticleButton->setEnabled(true);
     } else {
-        ui_.cancelArticleButton->setEnabled(false);
+        m_ui.cancelArticleButton->setEnabled(false);
     }
 }
 
-void MainWindow::onSalesViewSelectionChanged(const QItemSelection& selected,
+void MainWindow::onSalesViewSelectionChanged(const QItemSelection &selected,
-                                             [[maybe_unused]] const QItemSelection& deselected)
+                                             [[maybe_unused]] const QItemSelection &deselected)
 {
     if (selected.size() > 0) {
-        ui_.cancelSaleButton->setEnabled(true);
+        m_ui.cancelSaleButton->setEnabled(true);
         if (!selected.indexes()[0].parent().isValid())
-            ui_.printSaleReceiptButton->setEnabled(true);
+            m_ui.printSaleReceiptButton->setEnabled(true);
         else
-            ui_.printSaleReceiptButton->setEnabled(false);
+            m_ui.printSaleReceiptButton->setEnabled(false);
 
     } else {
-        ui_.cancelSaleButton->setEnabled(false);
+        m_ui.cancelSaleButton->setEnabled(false);
-        ui_.printSaleReceiptButton->setEnabled(false);
+        m_ui.printSaleReceiptButton->setEnabled(false);
     }
 }
 
 void MainWindow::onCancelArticleButtonClicked([[maybe_unused]] bool checked)
 {
-    auto selModel = ui_.basketView->selectionModel();
+    auto selModel = m_ui.basketView->selectionModel();
     if (selModel->hasSelection() == false)
         return;
 
@@ -329,22 +336,23 @@ void MainWindow::onCancelArticleButtonClicked([[maybe_unused]] bool checked)
 
     // Deleting the rows, beginning with the last one!
     for (auto iter = indexes.constEnd() - 1; iter >= indexes.constBegin(); --iter) {
-        ui_.basketView->model()->removeRow(iter->row());
+        m_ui.basketView->model()->removeRow(iter->row());
     }
 
-    ui_.basketSumLabel->setText(marketplace_->getBasketSumAsString().c_str()); // Update basket sum
+    m_ui.basketSumLabel->setText(
-    ui_.sellerNoEdit->setFocus();
+        m_marketplace->getBasketSumAsString().c_str()); // Update basket sum
+    m_ui.sellerNoEdit->setFocus();
 }
 
 void MainWindow::onCancelSaleButtonClicked([[maybe_unused]] bool checked)
 {
-    auto selModel = ui_.salesView->selectionModel();
+    auto selModel = m_ui.salesView->selectionModel();
     if (selModel->hasSelection() == false)
         return;
 
     auto dlgResult =
         QMessageBox(QMessageBox::Icon::Warning, "Sind Sie sicher?",
-                    "Möchten Sie wirklich stornieren?",
+                    "Möchten Sie wirklich aus abgeschlossenen Verkäufen stornieren?",
                     QMessageBox::StandardButton::Yes | QMessageBox::StandardButton::No, this)
             .exec();
     if (dlgResult == QMessageBox::No)
@@ -355,16 +363,25 @@ void MainWindow::onCancelSaleButtonClicked([[maybe_unused]] bool checked)
 
     // Deleting the rows, beginning with the last one!
     for (auto iter = indexes.constEnd() - 1; iter >= indexes.constBegin(); --iter) {
-        ui_.salesView->model()->removeRow(iter->row(), iter->parent());
+        m_ui.salesView->model()->removeRow(iter->row(), iter->parent());
     }
 
-    ui_.salesView->collapseAll();
+    m_ui.salesView->collapseAll();
+
+    QString lastPriceValue(formatCentAsEuroString(0).c_str());
+    if (m_ui.salesView->model()->rowCount() > 0) {
+        lastPriceValue =
+            m_ui.salesView->model()->data(m_ui.salesView->model()->index(0, 1)).toString();
+    }
+    m_ui.lastPriceLabel1->setText(lastPriceValue);
+    m_ui.lastPriceLabel2->setText(lastPriceValue);
+
     updateStatLabel();
 }
 
 void MainWindow::onPrintSaleReceiptButtonClicked([[maybe_unused]] bool checked)
 {
-    auto selModel = ui_.salesView->selectionModel();
+    auto selModel = m_ui.salesView->selectionModel();
     if (selModel->hasSelection() == false)
         return;
 
@@ -373,7 +390,7 @@ void MainWindow::onPrintSaleReceiptButtonClicked([[maybe_unused]] bool checked)
     QString posPrinterEndpoint = settings.value("global/posPrinterEndpoint", "").toString();
 
     auto indexes = selModel->selectedRows();
-    auto& sale = marketplace_->getSales().at(indexes[0].row());
+    auto &sale = m_marketplace->getSales().at(indexes[0].row());
 
     auto printerDevice =
         convertToPosPrinterDevice(posPrinterDevice.toStdString(), posPrinterEndpoint.toStdString());
@@ -387,12 +404,13 @@ void MainWindow::onPrintSaleReceiptButtonClicked([[maybe_unused]] bool checked)
     }
 
     if (printer->isValid())
-        printer->printSaleReceipt(sale.get(), settings.value("global/commune", "Dettingen").toString().toStdString());
+        printer->printSaleReceipt(
+            sale.get(), settings.value("global/commune", "Dettingen").toString().toStdString());
 }
 
 void MainWindow::onCancelAllArticlesButtonClicked([[maybe_unused]] bool checked)
 {
-    if (ui_.basketView->model()->rowCount() == 0)
+    if (m_ui.basketView->model()->rowCount() == 0)
         return;
 
     auto dlgResult =
@@ -403,10 +421,11 @@ void MainWindow::onCancelAllArticlesButtonClicked([[maybe_unused]] bool checked)
     if (dlgResult == QMessageBox::No)
         return;
 
-    dynamic_cast<BasketModel*>(ui_.basketView->model())->cancelSale();
+    dynamic_cast<BasketModel *>(m_ui.basketView->model())->cancelSale();
 
-    ui_.basketSumLabel->setText(marketplace_->getBasketSumAsString().c_str()); // Update basket sum
+    m_ui.basketSumLabel->setText(
-    ui_.sellerNoEdit->setFocus();
+        m_marketplace->getBasketSumAsString().c_str()); // Update basket sum
+    m_ui.sellerNoEdit->setFocus();
 }
 
 void MainWindow::onAboutQt() { QMessageBox::aboutQt(this); }
@@ -422,9 +441,9 @@ void MainWindow::onAbout()
             ">info@rustysoft.de</a>&gt;</p>");
 }
 
-void MainWindow::onImportSellerExcelActionTriggered()
+void MainWindow::onImportSellerActionTriggered()
 {
-    if (!marketplace_->getSales().empty()) {
+    if (!m_marketplace->getSales().empty()) {
         QMessageBox(QMessageBox::Icon::Information, "Import nicht möglich",
                     "Der Import ist nicht möglich, da schon Verkäufe getätigt wurden.",
                     QMessageBox::StandardButton::Ok, this)
@@ -432,59 +451,31 @@ void MainWindow::onImportSellerExcelActionTriggered()
         return;
     }
 
-    QMessageBox(
+    auto filename =
-        QMessageBox::Icon::Information, "Bitte beachten",
+        QFileDialog::getOpenFileName(this, "Verkäufer importieren", QString(),
-        "<b>Achtung:</b> Importieren Sie die Verkäuferdaten nur auf <b>einer (!)</b> "
+                                     "Alle unterstützte Dateien (*.csv);;CSV Dateien (*.csv)");
-        "KIMA2-Installation.<br /> "
+
-        "Verteilen Sie die Daten auf die anderen Installationen unbedingt über eine JSON-Datei!",
+    if (filename.isEmpty())
-        QMessageBox::StandardButton::Ok, this)
+        return;
+
+#if defined(_WIN64) || defined(_WIN32)
+    fs::path filePath(filename.toStdWString());
+#else
+    fs::path filePath(filename.toStdString());
+#endif
+
+    std::size_t numImported{};
+    numImported = CsvReader::readSellersFromFile(filePath, m_marketplace.get());
+
+    updateStatLabel();
+
+    using namespace std::string_literals;
+    std::ostringstream msg;
+    msg << "Aus der CSV-Datei wurden <b>"s << std::to_string(numImported)
+        << "</b> Verkäufer importiert.";
+    QMessageBox(QMessageBox::Icon::Information, "Verkäufer erfolgreich importiert",
+                msg.str().c_str(), QMessageBox::StandardButton::Ok, this)
         .exec();
-
-    auto filename = QFileDialog::getOpenFileName(this, "Verkäufer importieren", QString(),
-                                                 "Excel Dateien (*.xlsx *.xls)");
-
-    if (filename.isEmpty())
-        return;
-
-    fs::path filePath(filename.toStdWString());
-
-    ExcelReader::readSellersFromFile(filePath, marketplace_.get());
-    updateStatLabel();
-}
-
-void MainWindow::onImportSellerJsonActionTriggered()
-{
-    if (!marketplace_->getSales().empty()) {
-        QMessageBox(QMessageBox::Icon::Information, "Import nicht möglich",
-                    "Der Import ist nicht möglich, da schon Verkäufe getätigt wurden.",
-                    QMessageBox::StandardButton::Ok, this)
-            .exec();
-        return;
-    }
-
-    auto filename = QFileDialog::getOpenFileName(this, "Verkäufer importieren", QString(),
-                                                 "JSON Dateien (*.json)");
-
-    if (filename.isEmpty())
-        return;
-
-    fs::path filePath(filename.toStdWString());
-
-    JsonUtil::importSellers(filePath, marketplace_.get());
-    updateStatLabel();
-}
-
-void MainWindow::onExportSellerJsonActionTriggered()
-{
-    auto filename = QFileDialog::getSaveFileName(
-        this, "Verkäufer exportieren", QString("kima2_verkaeufer.json"), "JSON Dateien (*.json)");
-
-    if (filename.isEmpty())
-        return;
-
-    fs::path filePath(filename.toStdWString());
-
-    JsonUtil::exportSellers(filePath, marketplace_.get());
 }
 
 void MainWindow::onExportSalesJsonActionTriggered()
@@ -499,9 +490,13 @@ void MainWindow::onExportSalesJsonActionTriggered()
     if (filename.isEmpty())
         return;
 
+#if defined(_WIN64) || defined(_WIN32)
     fs::path filePath(filename.toStdWString());
+#else
+    fs::path filePath(filename.toStdString());
+#endif
 
-    JsonUtil::exportSales(filePath, marketplace_.get(),
+    JsonUtil::exportSales(filePath, m_marketplace.get(),
                           settings.value("global/cashPointNo").toInt());
 }
 
@@ -509,23 +504,30 @@ void MainWindow::onImportSalesJsonActionTriggered()
 {
     QSettings settings;
 
-    auto filename = QFileDialog::getOpenFileName(this, "Umsätze/Transaktionen importieren",
+    auto filenames = QFileDialog::getOpenFileNames(this, "Umsätze/Transaktionen importieren",
                                                  QString(), "JSON Dateien (*.json)");
 
-    if (filename.isEmpty())
+    if (filenames.isEmpty())
         return;
 
-    fs::path filePath(filename.toStdWString());
+    for(auto filename: filenames) {
+#if defined(_WIN64) || defined(_WIN32)
+        fs::path filePath(filename.toStdWString());
+#else
+        fs::path filePath(filename.toStdString());
+#endif
 
-    delete ui_.salesView->model();
+        delete m_ui.salesView->model();
-    try {
+        try {
-        JsonUtil::importSales(filePath, marketplace_.get(),
+            JsonUtil::importSales(filePath, m_marketplace.get(),
-                              settings.value("global/cashPointNo").toInt());
+                                settings.value("global/cashPointNo").toInt());
-    } catch (std::runtime_error& err) {
+        } catch (std::runtime_error &err) {
-        QMessageBox(QMessageBox::Icon::Warning, "Import nicht möglich", err.what(), QMessageBox::Ok,
+            QMessageBox(QMessageBox::Icon::Warning, "Import nicht möglich", err.what(), QMessageBox::Ok,
-                    this)
+                        this)
-            .exec();
+                .exec();
+        }
     }
+
     setSaleModel();
     updateStatLabel();
 }
@@ -550,7 +552,7 @@ void MainWindow::readGeometry()
     settings.endGroup();
 }
 
-void MainWindow::closeEvent(QCloseEvent* event)
+void MainWindow::closeEvent(QCloseEvent *event)
 {
     writeGeometry();
     event->accept();
@@ -560,9 +562,9 @@ void MainWindow::updateStatLabel()
 {
     std::string statistics("<b>KIMA2 - Version ");
     statistics += PROJECT_VERSION;
-    statistics += "</b><br />Verkäufer: " + std::to_string(marketplace_->getSellers().size() - 1);
+    statistics += "</b><br />Verkäufer: " + std::to_string(m_marketplace->getSellers().size() - 1);
-    statistics += "<br />Kunden: " + std::to_string(marketplace_->getSales().size());
+    statistics += "<br />Kunden: " + std::to_string(m_marketplace->getSales().size());
-    statistics += "<br />Umsatz: " + marketplace_->getOverallSumAsString();
+    statistics += "<br />Umsatz: " + m_marketplace->getOverallSumAsString();
 
-    ui_.statLabel->setText(statistics.c_str());
+    m_ui.statLabel->setText(statistics.c_str());
 }

src/gui/mainwindow.h

@@ -3,7 +3,7 @@
 
 #include "ui_mainwindow.h"
 
-#include <marketplace.h>
+#include <core/marketplace.h>
 
 #include <QMainWindow>
 #include <QtGui/QCloseEvent>
@@ -16,7 +16,7 @@ class MainWindow : public QMainWindow
 
   public:
     MainWindow();
-    Marketplace* getMarketplace() { return marketplace_.get(); }
+    Marketplace* getMarketplace() { return m_marketplace.get(); }
 
   private slots:
     void onBasketViewSelectionChanged(const QItemSelection& selected,
@@ -29,7 +29,7 @@ class MainWindow : public QMainWindow
     void onCancelAllArticlesButtonClicked(bool checked);
     void onAboutQt();
     void onAbout();
-    virtual bool eventFilter(QObject *target, QEvent *event) override;
+    virtual bool eventFilter(QObject* target, QEvent* event) override;
 
   protected:
     virtual void closeEvent(QCloseEvent* event) override;
@@ -39,9 +39,7 @@ class MainWindow : public QMainWindow
     void checkSellerNo(bool ctrlPressed = false);
     void onPaidButtonTriggered();
     void onGivenSpinBoxValueChanged(double value);
-    void onImportSellerExcelActionTriggered();
+    void onImportSellerActionTriggered();
-    void onImportSellerJsonActionTriggered();
-    void onExportSellerJsonActionTriggered();
     void onExportSalesJsonActionTriggered();
     void onImportSalesJsonActionTriggered();
     void setSaleModel();
@@ -49,8 +47,8 @@ class MainWindow : public QMainWindow
     void readGeometry();
     void updateStatLabel();
 
-    Ui::MainWindow ui_;
+    Ui::MainWindow m_ui;
-    std::unique_ptr<Marketplace> marketplace_;
+    std::unique_ptr<Marketplace> m_marketplace;
 };
 
 #endif

src/gui/mainwindow.ui

@@ -112,7 +112,11 @@
             </widget>
            </item>
            <item>
-            <widget class="QDoubleSpinBox" name="givenSpinBox"/>
+            <widget class="QDoubleSpinBox" name="givenSpinBox">
+             <property name="maximum">
+              <double>999.990000000000009</double>
+             </property>
+            </widget>
            </item>
            <item>
             <widget class="QLabel" name="label_4">
@@ -436,16 +440,8 @@ drucken</string>
     <property name="title">
      <string>&amp;Verkäufer</string>
     </property>
-    <widget class="QMenu" name="importSellerMenu">
-     <property name="title">
-      <string>Importieren</string>
-     </property>
-     <addaction name="importSellerExcelAction"/>
-     <addaction name="importSellerJsonAction"/>
-    </widget>
     <addaction name="actionEditSeller"/>
-    <addaction name="importSellerMenu"/>
+    <addaction name="importSellerAction"/>
-    <addaction name="exportSellerJsonAction"/>
    </widget>
    <widget class="QMenu" name="menuHilfe">
     <property name="title">
@@ -509,9 +505,9 @@ drucken</string>
     <string>Exportieren für andere Kasse (JSON)</string>
    </property>
   </action>
-  <action name="importSellerExcelAction">
+  <action name="importSellerActionX">
    <property name="text">
-    <string>Aus Excel-Datei (initial)</string>
+    <string>Aus CSV-Datei (initial)</string>
    </property>
   </action>
   <action name="importSellerJsonAction">
@@ -544,6 +540,11 @@ drucken</string>
     <string>Lizenz</string>
    </property>
   </action>
+  <action name="importSellerAction">
+   <property name="text">
+    <string>Importieren (aus CSV-Datei)</string>
+   </property>
+  </action>
  </widget>
  <resources/>
  <connections/>

src/gui/meson.build

@@ -0,0 +1,23 @@
+qt5 = import('qt5')
+qt5_dep = dependency('qt5', modules: ['Core', 'Gui', 'PrintSupport', 'Network'])
+
+thread_dep = dependency('threads')
+
+
+src = ['kima2.cpp', 'mainwindow.cpp',  'sellerdialog.cpp', 'sellermodel.cpp', 
+       'pricedialog.cpp', 'basketmodel.cpp', 'salemodel.cpp', 'reportdialog.cpp',
+       'reportmodel.cpp', 'settingsdialog.cpp']
+    
+ui = ['mainwindow.ui', 'sellerdialog.ui', 'pricedialog.ui', 'reportdialog.ui', 'settingsdialog.ui']
+
+processed = qt5.preprocess(moc_headers : ['basketmodel.h', 'mainwindow.h', 'pricedialog.h',
+                                          'reportdialog.h', 'sellerdialog.h', 'settingsdialog.h',
+                                          'sellermodel.h', 'salemodel.h'],
+                           ui_files : ui,
+                           qresources : '../../kima2.qrc',
+                           dependencies: qt5_dep)
+                           
+kima2 = executable('kima2', sources : [src, processed], 
+                   dependencies : [qt5_dep, singleapp_dep, core_dep, printer_dep, thread_dep],
+                   include_directories : [configuration_inc],
+		   install : true)

src/gui/pricedialog.cpp

@@ -6,34 +6,31 @@
 
 PriceDialog::PriceDialog(QWidget* parent, bool forceDesc, Qt::WindowFlags f) : QDialog(parent, f)
 {
-    forceDesc_ = forceDesc;
+    m_forceDesc = forceDesc;
-    ui_.setupUi(this);
+    m_ui.setupUi(this);
-    ui_.priceSpinBox->setFocus();
+    m_ui.priceSpinBox->setFocus();
 }
 
-int PriceDialog::getPrice() const { return static_cast<int>(ui_.priceSpinBox->value() * 100); }
+int PriceDialog::getPrice() const { return static_cast<int>(m_ui.priceSpinBox->value() * 100); }
 
-std::string PriceDialog::getDescription() const { return ui_.descEdit->text().toStdString(); }
+std::string PriceDialog::getDescription() const { return m_ui.descEdit->text().toStdString(); }
 
 void PriceDialog::accept()
 {
-    if (static_cast<int>(std::round(ui_.priceSpinBox->value() * 100.0L)) % 50 != 0) {
+    if (static_cast<int>(std::round(m_ui.priceSpinBox->value() * 100.0L)) % 50 != 0) {
         QMessageBox(QMessageBox::Icon::Warning, "Falsche Preiseingabe",
                     "Es sind nur 0,50 Cent-Schritte erlaubt.", QMessageBox::StandardButton::Ok,
                     this)
             .exec();
-    } else if (forceDesc_ && ui_.descEdit->text().trimmed().isEmpty()) {
+    } else if (m_forceDesc && m_ui.descEdit->text().trimmed().isEmpty()) {
         QMessageBox(QMessageBox::Icon::Warning, "Artikelbeschreibung fehlt",
                     "Da Sie auf das Sonderkonto buchen ist eine Artikelbeschreibung erforderlich.",
                     QMessageBox::StandardButton::Ok, this)
             .exec();
-        ui_.descEdit->setFocus();
+        m_ui.descEdit->setFocus();
     } else {
         QDialog::accept();
     }
 }
 
-void PriceDialog::setForceDesc(bool force)
+void PriceDialog::setForceDesc(bool force) { m_forceDesc = force; }
-{
-    forceDesc_ = force;
-}

src/gui/pricedialog.h

@@ -19,8 +19,8 @@ class PriceDialog : public QDialog
   private:
     void on_model_duplicateSellerNo(const QString& message);
     virtual void accept() override;
-    Ui::PriceDialog ui_;
+    Ui::PriceDialog m_ui;
-    bool forceDesc_;
+    bool m_forceDesc;
 };
 
 #endif

src/gui/pricedialog.ui

@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>201</width>
+    <width>266</width>
-    <height>127</height>
+    <height>128</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -18,6 +18,11 @@
     <layout class="QGridLayout" name="gridLayout">
      <item row="0" column="0">
       <widget class="QLabel" name="label">
+       <property name="font">
+        <font>
+         <pointsize>16</pointsize>
+        </font>
+       </property>
        <property name="text">
         <string>Preis</string>
        </property>
@@ -28,6 +33,11 @@
      </item>
      <item row="0" column="1">
       <widget class="QDoubleSpinBox" name="priceSpinBox">
+       <property name="font">
+        <font>
+         <pointsize>16</pointsize>
+        </font>
+       </property>
        <property name="minimum">
         <double>-999.990000000000009</double>
        </property>
@@ -51,6 +61,18 @@
      </item>
      <item row="1" column="1">
       <widget class="QLineEdit" name="descEdit">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="MinimumExpanding" vsizetype="Fixed">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="minimumSize">
+        <size>
+         <width>200</width>
+         <height>0</height>
+        </size>
+       </property>
        <property name="placeholderText">
         <string>(optional)</string>
        </property>

src/gui/reportdialog.cpp

@@ -2,8 +2,9 @@
 
 #include "mainwindow.h"
 
-#include <posprinter.h>
+#include <core/utils.h>
-#include <utils.h>
+#include <printer/posprinter.h>
+#include <printer/utils.h>
 
 #include <filesystem>
 
@@ -16,22 +17,22 @@
 
 namespace fs = std::filesystem;
 
-ReportDialog::ReportDialog(QWidget* parent, Qt::WindowFlags f) : QDialog(parent, f)
+ReportDialog::ReportDialog(QWidget *parent, Qt::WindowFlags f) : QDialog(parent, f)
 {
-    ui_.setupUi(this);
+    m_ui.setupUi(this);
-    market_ = dynamic_cast<MainWindow*>(parent)->getMarketplace();
+    m_market = dynamic_cast<MainWindow *>(parent)->getMarketplace();
-    model_ = std::make_unique<ReportModel>(market_, ui_.reportView);
+    m_model = std::make_unique<ReportModel>(m_market, m_ui.reportView);
-    ui_.reportView->setModel(model_.get());
+    m_ui.reportView->setModel(m_model.get());
-    ui_.reportView->hideColumn(0);
+    m_ui.reportView->hideColumn(0);
-    ui_.reportView->setRowHidden(0, true); // hide the special "Sonderkonto" user
+    m_ui.reportView->setRowHidden(0, true); // hide the special "Sonderkonto" user
 
-    connect(ui_.exportCsvButton, &QPushButton::clicked, this,
+    connect(m_ui.exportCsvButton, &QPushButton::clicked, this,
             &ReportDialog::onExportCsvButtonClicked);
-    connect(ui_.printReportButton, &QPushButton::clicked, this,
+    connect(m_ui.printReportButton, &QPushButton::clicked, this,
             &ReportDialog::onPrintReportButtonClicked);
-    connect(ui_.printSellerReceiptButton, &QPushButton::clicked, this,
+    connect(m_ui.printSellerReceiptButton, &QPushButton::clicked, this,
             &ReportDialog::onPrintSellerReceiptButtonClicked);
-    connect(ui_.reportView->selectionModel(), &QItemSelectionModel::selectionChanged, this,
+    connect(m_ui.reportView->selectionModel(), &QItemSelectionModel::selectionChanged, this,
             &ReportDialog::onReportViewSelectionChanged);
 }
 
@@ -47,9 +48,13 @@ void ReportDialog::onExportCsvButtonClicked()
     if (filename.isEmpty())
         return;
 
+#if defined(_WIN64) || defined(_WIN32)
     fs::path filePath(filename.toStdWString());
+#else
+    fs::path filePath(filename.toStdString());
+#endif
 
-    market_->exportReportToCSV(filePath, feeInPercent, maxFeeInEuro);
+    m_market->exportReportToCSV(filePath, feeInPercent, maxFeeInEuro);
 }
 
 void ReportDialog::onPrintReportButtonClicked()
@@ -70,8 +75,8 @@ void ReportDialog::onPrintReportButtonClicked()
     QPainter painter;
     int height = printer.height();
     int width = printer.width();
-    const double ENTRIES_PER_PAGE = 51;
+    const double ENTRIES_PER_PAGE = 45;
-    const auto& sellers = market_->getSellers();
+    const auto &sellers = m_market->getSellers();
     unsigned int numPages = std::ceil(sellers.size() / ENTRIES_PER_PAGE);
 
     painter.begin(&printer);
@@ -102,7 +107,7 @@ void ReportDialog::onPrintReportButtonClicked()
         for (unsigned int j = 0;
              j < ENTRIES_PER_PAGE && (i - 1) * ENTRIES_PER_PAGE + j < sellers.size(); ++j) {
             int idx = (i - 1) * ENTRIES_PER_PAGE + j;
-            if (sellers.at(idx)->getUuidAsString() == "11111111-1111-1111-1111-111111111111") {
+            if (sellers.at(idx)->getId() == 0) {
                 continue;
             }
             content += QString("%1 %2 %3 %4 %5 %6 %7\n")
@@ -121,7 +126,7 @@ void ReportDialog::onPrintReportButtonClicked()
     }
 
     // pieces booked on the special account "Sonderkonto"
-    const auto specialSeller = market_->findSellerWithUuid("11111111-1111-1111-1111-111111111111");
+    const auto specialSeller = m_market->findSellerWithSellerNo(0);
     if (specialSeller && specialSeller->numArticlesSold() > 0) {
         printer.newPage();
         painter.setFont(QFont("Arial", 16, QFont::Bold));
@@ -131,7 +136,7 @@ void ReportDialog::onPrintReportButtonClicked()
         QString content("Einzelteile ohne Nummer\n=======================\n\n");
         unsigned int lines{0};
         unsigned int pages{1};
-        for (const auto& article : specialSeller->getArticles(true)) {
+        for (const auto &article : specialSeller->getArticles(true)) {
             content += QString("- %1:").arg(article->getDescription().substr(0, 45).c_str(), -45);
             content += QString("%1\n").arg(article->getPriceAsString().c_str(), 11);
             ++lines;
@@ -158,8 +163,8 @@ void ReportDialog::onPrintReportButtonClicked()
                      "Auswertung Kindersachenmarkt");
     painter.setFont(fixedFont);
     QString content("Gesamtstatistik\n===============\n\n");
-    int numArticlesOffered = market_->getNumArticlesOffered();
+    int numArticlesOffered = m_market->getNumArticlesOffered();
-    int numArticlesSold = market_->getNumArticlesSold();
+    int numArticlesSold = m_market->getNumArticlesSold();
     double percentArticlesSold =
         (static_cast<double>(numArticlesSold) / static_cast<double>(numArticlesOffered)) * 100;
     content += QString("Registrierte Verkäufer: %1\n").arg(sellers.size() - 1, 6);
@@ -167,14 +172,14 @@ void ReportDialog::onPrintReportButtonClicked()
     content += QString("Verkaufte Artikel:      %1 (%L2 %)\n")
                    .arg(numArticlesSold, 6)
                    .arg(percentArticlesSold, 0, 'f', 2);
-    content += QString("Anzahl Kunden:          %1\n\n").arg(market_->getSales().size(), 6);
+    content += QString("Anzahl Kunden:          %1\n\n").arg(m_market->getSales().size(), 6);
-    content += QString("Gesamtumsatz:     %1\n").arg(market_->getOverallSumAsString().c_str(), 10);
+    content += QString("Gesamtumsatz:     %1\n").arg(m_market->getOverallSumAsString().c_str(), 10);
     content +=
         QString("Ausgezahlt:       %1\n")
-            .arg(market_->getOverallPaymentAsString(feeInPercent, maxFeeInEuro * 100).c_str(), 10);
+            .arg(m_market->getOverallPaymentAsString(feeInPercent, maxFeeInEuro * 100).c_str(), 10);
     content +=
         QString("Verbleibend:      %1\n\n")
-            .arg(market_->getOverallRevenueAsString(feeInPercent, maxFeeInEuro * 100).c_str(), 10);
+            .arg(m_market->getOverallRevenueAsString(feeInPercent, maxFeeInEuro * 100).c_str(), 10);
     content += QString("(Einbehaltener Prozentsatz:    %1 %)\n").arg(feeInPercent, 3);
     content += QString("(Maximal einbehaltener Betrag: %1 €)\n").arg(maxFeeInEuro, 3);
 
@@ -191,12 +196,12 @@ void ReportDialog::onPrintSellerReceiptButtonClicked()
     QString posPrinterDevice = settings.value("global/posPrinterDevice", "").toString();
     QString posPrinterEndpoint = settings.value("global/posPrinterEndpoint", "").toString();
 
-    auto selModel = ui_.reportView->selectionModel();
+    auto selModel = m_ui.reportView->selectionModel();
     if (selModel->hasSelection() == false)
         return;
 
     auto indexes = selModel->selectedRows();
-    auto& seller = market_->getSellers().at(indexes[0].row());
+    auto &seller = m_market->getSellers().at(indexes[0].row());
 
     auto printerDevice =
         convertToPosPrinterDevice(posPrinterDevice.toStdString(), posPrinterEndpoint.toStdString());
@@ -215,12 +220,12 @@ void ReportDialog::onPrintSellerReceiptButtonClicked()
             settings.value("global/commune", "Dettingen").toString().toStdString());
 }
 
-void ReportDialog::onReportViewSelectionChanged(const QItemSelection& selected,
+void ReportDialog::onReportViewSelectionChanged(const QItemSelection &selected,
-                                                [[maybe_unused]] const QItemSelection& deselected)
+                                                [[maybe_unused]] const QItemSelection &deselected)
 {
     if (selected.size() > 0) {
-        ui_.printSellerReceiptButton->setEnabled(true);
+        m_ui.printSellerReceiptButton->setEnabled(true);
     } else {
-        ui_.printSellerReceiptButton->setEnabled(false);
+        m_ui.printSellerReceiptButton->setEnabled(false);
     }
 }

src/gui/reportdialog.h

@@ -5,7 +5,7 @@
 
 #include "reportmodel.h"
 
-#include <marketplace.h>
+#include <core/marketplace.h>
 
 #include <QDialog>
 
@@ -24,9 +24,10 @@ class ReportDialog : public QDialog
     void onReportViewSelectionChanged(const QItemSelection& selected,
                                       const QItemSelection& deselected);
 
-        private : Ui::ReportDialog ui_;
+  private:
-    Marketplace* market_;
+    Ui::ReportDialog m_ui;
-    std::unique_ptr<ReportModel> model_;
+    Marketplace* m_market;
+    std::unique_ptr<ReportModel> m_model;
 };
 
 #endif

src/gui/reportmodel.cpp

@@ -5,16 +5,16 @@
 #include <QSettings>
 
 ReportModel::ReportModel(Marketplace* market, QObject* parent)
-    : QAbstractTableModel(parent), market_(market)
+    : QAbstractTableModel(parent), m_market(market)
 {
     QSettings settings;
-    feeInPercent_ = settings.value("global/feeInPercent").toInt();
+    m_feeInPercent = settings.value("global/feeInPercent").toInt();
-    maxFeeInCent_ = settings.value("global/maxFeeInEuro").toInt() * 100;
+    m_maxFeeInCent = settings.value("global/maxFeeInEuro").toInt() * 100;
 }
 
 int ReportModel::rowCount([[maybe_unused]] const QModelIndex& parent) const
 {
-    return static_cast<int>(market_->getSellers().size());
+    return static_cast<int>(m_market->getSellers().size());
 }
 
 int ReportModel::columnCount([[maybe_unused]] const QModelIndex& parent) const { return 7; }
@@ -52,14 +52,14 @@ QVariant ReportModel::data(const QModelIndex& index, int role) const
     if (role != Qt::DisplayRole)
         return QVariant();
 
-    if (market_->getSellers().size() == 0)
+    if (m_market->getSellers().size() == 0)
         return QVariant();
 
-    Seller* seller = market_->getSellers().at(index.row()).get();
+    Seller* seller = m_market->getSellers().at(index.row()).get();
 
     switch (index.column()) {
     case 0:
-        return seller->getUuidAsString().c_str();
+        return seller->getId();
     case 1:
         return seller->getSellerNo();
     case 2:
@@ -71,7 +71,7 @@ QVariant ReportModel::data(const QModelIndex& index, int role) const
     case 5:
         return seller->sumAsString().c_str();
     case 6:
-        return paymentAsString(seller->sumInCents(), feeInPercent_, maxFeeInCent_).c_str();
+        return paymentAsString(seller->sumInCents(), m_feeInPercent, m_maxFeeInCent).c_str();
     default:
         return "???";
     }

src/gui/reportmodel.h

@@ -1,7 +1,7 @@
 #ifndef REPORT_MODEL_H
 #define REPORT_MODEL_H
 
-#include <marketplace.h>
+#include <core/marketplace.h>
 
 #include <QAbstractTableModel>
 
@@ -15,9 +15,9 @@ class ReportModel : public QAbstractTableModel
     virtual QVariant headerData(int section, Qt::Orientation orientation, int role) const override;
 
   private:
-    Marketplace* market_;
+    Marketplace* m_market;
-    int feeInPercent_{};
+    int m_feeInPercent{};
-    int maxFeeInCent_{};
+    int m_maxFeeInCent{};
 };
 
 #endif

src/gui/salemodel.cpp

@@ -1,6 +1,6 @@
 #include "salemodel.h"
 
-#include <article.h>
+#include <core/article.h>
 
 #include <algorithm>
 
@@ -9,7 +9,7 @@
 
 SaleModel::SaleModel(Marketplace* market, QObject* parent) : QAbstractItemModel(parent)
 {
-    marketplace_ = market;
+    m_marketplace = market;
 }
 
 QModelIndex SaleModel::index(int row, int column, const QModelIndex& parent) const
@@ -18,7 +18,7 @@ QModelIndex SaleModel::index(int row, int column, const QModelIndex& parent) con
         return QModelIndex();
 
     if (!parent.isValid()) {
-        Sale* sale = marketplace_->getSales().at(row).get();
+        Sale* sale = m_marketplace->getSales().at(row).get();
         return createIndex(row, column, sale);
     } else if (!parent.parent().isValid()) {
         Sale* sale = static_cast<Sale*>(parent.internalPointer());
@@ -44,15 +44,15 @@ QModelIndex SaleModel::parent(const QModelIndex& index) const
     Sale* sale{};
     Article* article{};
 
-    Entity* ent = static_cast<Entity*>(index.internalPointer());
+    EntityUuid* ent = static_cast<EntityUuid*>(index.internalPointer());
 
     sale = dynamic_cast<Sale*>(ent);
 
     if (sale) {
-        if (sale == rootItem.get())
+        if (sale == m_rootItem.get())
             return QModelIndex();
         else {
-            return createIndex(-1, 0, rootItem.get());
+            return createIndex(-1, 0, m_rootItem.get());
         }
     } else {
         article = dynamic_cast<Article*>(ent);
@@ -80,7 +80,7 @@ QVariant SaleModel::data(const QModelIndex& index, int role) const
     if (role == Qt::FontRole) {
         QFont myFont;
         QFont myFixedFont = QFontDatabase::systemFont(QFontDatabase::FixedFont);
-	if (myFixedFont.fixedPitch() == false) {
+        if (myFixedFont.fixedPitch() == false) {
             myFixedFont.setFamily("monospace");
         }
 
@@ -113,7 +113,9 @@ QVariant SaleModel::data(const QModelIndex& index, int role) const
         Article* article = static_cast<Article*>(index.internalPointer());
         switch (index.column()) {
         case 0:
-            return (std::string("Verk. ") + article->getSeller()->getSellerNoAsString() + " (" + article->getCompleteArticleNo() + ")").c_str();
+            return (std::string("Verk. ") + article->getSeller()->getSellerNoAsString() + " (" +
+                    article->getCompleteArticleNo() + ")")
+                .c_str();
         case 1:
             return article->getPriceAsString().c_str();
         case 2:
@@ -130,7 +132,7 @@ int SaleModel::rowCount(const QModelIndex& parent) const
         return 0;
 
     if (!parent.isValid()) {
-        return marketplace_->getSales().size();
+        return m_marketplace->getSales().size();
     } else if (!parent.parent().isValid()) {
         Sale* sale = static_cast<Sale*>(parent.internalPointer());
         return sale->getArticles().size();
@@ -165,7 +167,7 @@ QVariant SaleModel::headerData(int section, Qt::Orientation orientation, int rol
 void SaleModel::onBasketDataChanged()
 {
     emit beginResetModel();
-    auto& sales = marketplace_->getSales();
+    auto& sales = m_marketplace->getSales();
     std::sort(sales.begin(), sales.end(), [](const auto& lhs, const auto& rhs) {
         return lhs->getTimestamp() > rhs->getTimestamp();
     });
@@ -177,11 +179,11 @@ bool SaleModel::removeRows(int row, int count, const QModelIndex& parent)
     if (!parent.isValid()) {
         // remove complete sale
         emit beginRemoveRows(parent, row, row + count - 1);
-        auto& sale = marketplace_->getSales().at(row);
+        auto& sale = m_marketplace->getSales().at(row);
         sale->setState(Sale::State::DELETE);
         std::for_each(sale->getArticles().begin(), sale->getArticles().end(),
                       [](auto& a) { a->setState(Article::State::DELETE); });
-        marketplace_->storeToDb();
+        m_marketplace->storeToDb();
         emit endRemoveRows();
 
     } else if (!parent.parent().isValid()) {
@@ -197,7 +199,7 @@ bool SaleModel::removeRows(int row, int count, const QModelIndex& parent)
             sale->setState(Sale::State::DELETE);
         }
         emit beginRemoveRows(parent.parent(), 0, 0);
-        marketplace_->storeToDb();
+        m_marketplace->storeToDb();
         emit endRemoveRows();
     }
 

src/gui/salemodel.h

@@ -1,7 +1,7 @@
 #ifndef SALEMODEL_H
 #define SALEMODEL_H
 
-#include <marketplace.h>
+#include <core/marketplace.h>
 
 #include <QAbstractItemModel>
 
@@ -12,7 +12,7 @@ class SaleModel : public QAbstractItemModel
   public:
     explicit SaleModel(Marketplace* market, QObject* parent = nullptr);
     virtual QModelIndex index(int row, int column,
-                      const QModelIndex& parent = QModelIndex()) const override;
+                              const QModelIndex& parent = QModelIndex()) const override;
     virtual QModelIndex parent(const QModelIndex& index) const override;
     virtual QVariant data(const QModelIndex& index, int role) const override;
     virtual int rowCount(const QModelIndex& parent) const override;
@@ -24,8 +24,8 @@ class SaleModel : public QAbstractItemModel
     void onBasketDataChanged();
 
   private:
-    Marketplace* marketplace_;
+    Marketplace* m_marketplace;
-    std::unique_ptr<Sale> rootItem{new Sale()};
+    std::unique_ptr<Sale> m_rootItem{new Sale()};
 };
 
 #endif

src/gui/sellerdialog.cpp

@@ -7,25 +7,25 @@
 
 SellerDialog::SellerDialog(QWidget* parent, Qt::WindowFlags f) : QDialog(parent, f)
 {
-    ui_.setupUi(this);
+    m_ui.setupUi(this);
-    ui_.editButton->setVisible(false);
+    m_ui.editButton->setVisible(false);
-    market_ = dynamic_cast<MainWindow*>(parent)->getMarketplace();
+    m_market = dynamic_cast<MainWindow*>(parent)->getMarketplace();
-    model_ = std::make_unique<SellerModel>(market_, ui_.tableView);
+    m_model = std::make_unique<SellerModel>(m_market, m_ui.tableView);
-    ui_.tableView->setModel(model_.get());
+    m_ui.tableView->setModel(m_model.get());
-    ui_.tableView->setColumnHidden(0, true); // hide the uuid
+    m_ui.tableView->setColumnHidden(0, true); // hide the uuid
-    ui_.tableView->setRowHidden(0, true);    // hide the special "Sonderkonto" user
+    m_ui.tableView->setRowHidden(0, true);    // hide the special "Sonderkonto" user
-    connect(ui_.newButton, &QPushButton::clicked, this, &SellerDialog::on_newButton_clicked);
+    connect(m_ui.newButton, &QPushButton::clicked, this, &SellerDialog::on_newButton_clicked);
-    connect(ui_.deleteButton, &QPushButton::clicked, this, &SellerDialog::on_deleteButton_clicked);
+    connect(m_ui.deleteButton, &QPushButton::clicked, this, &SellerDialog::on_deleteButton_clicked);
-    connect(model_.get(), &SellerModel::duplicateSellerNo, this,
+    connect(m_model.get(), &SellerModel::duplicateSellerNo, this,
             &SellerDialog::on_model_duplicateSellerNo);
-    connect(ui_.tableView->selectionModel(), &QItemSelectionModel::selectionChanged, this,
+    connect(m_ui.tableView->selectionModel(), &QItemSelectionModel::selectionChanged, this,
             &SellerDialog::onSellerViewSelectionChanged);
 }
 
 void SellerDialog::on_newButton_clicked()
 {
     // Don't allow new seller if market has already started
-    if (market_->getSales().size() > 0) {
+    if (m_market->getSales().size() > 0) {
         QMessageBox(QMessageBox::Icon::Warning, "Hinweis",
                     "Da die Verkaufsphase schon begonnen hat (Artikel wurden bereits verkauft) "
                     "können Sie keine Verkäufer mehr hinzufügen.",
@@ -34,22 +34,22 @@ void SellerDialog::on_newButton_clicked()
         return;
     }
 
-    ui_.tableView->reset();
+    m_ui.tableView->reset();
-    ui_.tableView->model()->insertRows(ui_.tableView->model()->rowCount(), 1);
+    m_ui.tableView->model()->insertRows(m_ui.tableView->model()->rowCount(), 1);
-    ui_.tableView->scrollToBottom();
+    m_ui.tableView->scrollToBottom();
-    ui_.tableView->selectRow(ui_.tableView->model()->rowCount() - 1);
+    m_ui.tableView->selectRow(m_ui.tableView->model()->rowCount() - 1);
-    QModelIndex idx = ui_.tableView->model()->index(ui_.tableView->model()->rowCount() - 1, 2);
+    QModelIndex idx = m_ui.tableView->model()->index(m_ui.tableView->model()->rowCount() - 1, 2);
-    ui_.tableView->setCurrentIndex(idx);
+    m_ui.tableView->setCurrentIndex(idx);
-    ui_.tableView->edit(idx);
+    m_ui.tableView->edit(idx);
 }
 
 void SellerDialog::on_deleteButton_clicked()
 {
-    auto selModel = ui_.tableView->selectionModel();
+    auto selModel = m_ui.tableView->selectionModel();
     if (selModel->hasSelection() == false)
         return;
 
-    if (market_->getSales().size() > 0) {
+    if (m_market->getSales().size() > 0) {
         QMessageBox(QMessageBox::Icon::Warning, "Hinweis",
                     "Da die Verkaufsphase schon begonnen hat (Artikel wurden bereits verkauft) "
                     "können Sie keine Verkäufer mehr löschen.",
@@ -60,7 +60,8 @@ void SellerDialog::on_deleteButton_clicked()
 
     auto dlgResult =
         QMessageBox(QMessageBox::Icon::Warning, "Sind Sie sicher?",
-                    "Löschen wirkt sich direkt auf die Datenbank aus. Möchten Sie fortfahren?",
+                    "Löschen wirkt sich <b>sofort</b> auf die Datenbank aus. Sie können den "
+                    "Vorgang nicht rückgängig machen. Möchten Sie fortfahren?",
                     QMessageBox::StandardButton::Yes | QMessageBox::StandardButton::No, this)
             .exec();
     if (dlgResult == QMessageBox::No)
@@ -71,7 +72,7 @@ void SellerDialog::on_deleteButton_clicked()
 
     // Deleting the rows, beginning with the last one!
     for (auto iter = indexes.constEnd() - 1; iter >= indexes.constBegin(); --iter) {
-        ui_.tableView->model()->removeRow(iter->row());
+        m_ui.tableView->model()->removeRow(iter->row());
     }
 }
 
@@ -101,8 +102,8 @@ void SellerDialog::onSellerViewSelectionChanged(const QItemSelection& selected,
                                                 [[maybe_unused]] const QItemSelection& deselected)
 {
     if (selected.size() > 0) {
-        ui_.deleteButton->setEnabled(true);
+        m_ui.deleteButton->setEnabled(true);
     } else {
-        ui_.deleteButton->setEnabled(false);
+        m_ui.deleteButton->setEnabled(false);
     }
 }

src/gui/sellerdialog.h

@@ -26,9 +26,9 @@ class SellerDialog : public QDialog
     void on_deleteButton_clicked();
     void on_model_duplicateSellerNo(const QString& message);
     virtual void accept() override;
-    Ui::SellerDialog ui_;
+    Ui::SellerDialog m_ui;
-    Marketplace* market_;
+    Marketplace* m_market;
-    std::unique_ptr<SellerModel> model_;
+    std::unique_ptr<SellerModel> m_model;
 };
 
 #endif

src/gui/sellermodel.cpp

@@ -5,13 +5,13 @@
 #include <QMessageBox>
 
 SellerModel::SellerModel(Marketplace* market, QObject* parent)
-    : QAbstractTableModel(parent), marketplace_(market)
+    : QAbstractTableModel(parent), m_marketplace(market)
 {
 }
 
 int SellerModel::rowCount([[maybe_unused]] const QModelIndex& parent) const
 {
-    return marketplace_->getSellers().size();
+    return m_marketplace->getSellers().size();
 }
 
 int SellerModel::columnCount([[maybe_unused]] const QModelIndex& parent) const { return 5; }
@@ -21,17 +21,14 @@ QVariant SellerModel::data(const QModelIndex& index, int role) const
     if (role != Qt::DisplayRole)
         return QVariant();
 
-    if (marketplace_->getSellers().size() == 0)
+    if (m_marketplace->getSellers().size() == 0)
         return QVariant();
 
-    Seller* seller = marketplace_->getSellers().at(index.row()).get();
+    Seller* seller = m_marketplace->getSellers().at(index.row()).get();
 
-    /*      if (seller->getState() == Seller::State::DELETE)
-            return QVariant();
-     */
     switch (index.column()) {
     case 0:
-        return seller->getUuidAsString().c_str();
+        return seller->getId();
     case 1:
         return seller->getSellerNo();
     case 2:
@@ -81,21 +78,21 @@ bool SellerModel::setData(const QModelIndex& index, const QVariant& value, int r
     if (role != Qt::EditRole)
         return false;
 
-    Seller* seller = marketplace_->getSellers().at(index.row()).get();
+    Seller* seller = m_marketplace->getSellers().at(index.row()).get();
 
     switch (index.column()) {
     case 0:
-        seller->setUuidFromString(value.toString().toStdString());
+        seller->setId(value.toInt());
         break;
     case 1: {
         if (value.toInt() < 0)
             return false;
         auto iter =
-            std::find_if(marketplace_->getSellers().begin(), marketplace_->getSellers().end(),
+            std::find_if(m_marketplace->getSellers().begin(), m_marketplace->getSellers().end(),
                          [&value](const std::unique_ptr<Seller>& s) {
                              return value.toInt() == s->getSellerNo();
                          });
-        if (iter != marketplace_->getSellers().end()) {
+        if (iter != m_marketplace->getSellers().end()) {
             emit duplicateSellerNo(
                 "Die Verkäufernummer muss eindeutig sein.\n(Möglicherweise wird die Nummer von "
                 "einem (ausgeblendeten) Eintrag, der zum Löschen vorgemerkt ist, verwendet.)");
@@ -126,9 +123,8 @@ bool SellerModel::insertRows(int row, int count, const QModelIndex& parent)
 {
     emit beginInsertRows(parent, row, row + count - 1);
     auto seller = std::make_unique<Seller>();
-    seller->createUuid();
+    seller->setSellerNo(m_marketplace->getNextSellerNo());
-    seller->setSellerNo(marketplace_->getNextSellerNo());
+    m_marketplace->getSellers().push_back(std::move(seller));
-    marketplace_->getSellers().push_back(std::move(seller));
     emit endInsertRows();
 
     return true;
@@ -136,21 +132,21 @@ bool SellerModel::insertRows(int row, int count, const QModelIndex& parent)
 
 bool SellerModel::removeRows(int row, int count, const QModelIndex& parent)
 {
-    auto seller = marketplace_->getSellers().at(row).get();
+    auto seller = m_marketplace->getSellers().at(row).get();
     if (seller->getState() == Seller::State::NEW) {
         emit beginRemoveRows(parent, row, row + count - 1);
-        marketplace_->getSellers().erase(
+        m_marketplace->getSellers().erase(
-            std::remove_if(marketplace_->getSellers().begin(), marketplace_->getSellers().end(),
+            std::remove_if(m_marketplace->getSellers().begin(), m_marketplace->getSellers().end(),
                            [&seller](const std::unique_ptr<Seller>& a) {
-                               return a->getUuid() == seller->getUuid();
+                               return a->getId() == seller->getId();
                            }),
-            marketplace_->getSellers().end());
+            m_marketplace->getSellers().end());
         emit endRemoveRows();
         return true;
     } else {
         emit beginRemoveRows(parent, row, row + count - 1);
         seller->setState(Seller::State::DELETE);
-        marketplace_->storeToDb(true);
+        m_marketplace->storeToDb(true);
         emit endRemoveRows();
         return true;
     }

src/gui/sellermodel.h

@@ -1,30 +1,31 @@
 #ifndef SELLER_MODEL_H
 #define SELLER_MODEL_H
 
-#include <marketplace.h>
+#include <core/marketplace.h>
 
 #include <QAbstractTableModel>
 
 class SellerModel : public QAbstractTableModel
 {
-  Q_OBJECT
+    Q_OBJECT
 
-  public:
+public:
-    explicit SellerModel(Marketplace* market, QObject* parent = nullptr);
+    explicit SellerModel(Marketplace *market, QObject *parent = nullptr);
-    virtual int rowCount(const QModelIndex& parent = QModelIndex()) const override;
+    virtual int rowCount(const QModelIndex &parent = QModelIndex()) const override;
-    virtual int columnCount(const QModelIndex& parent = QModelIndex()) const override;
+    virtual int columnCount(const QModelIndex &parent = QModelIndex()) const override;
-    virtual QVariant data(const QModelIndex& index, int role = Qt::DisplayRole) const override;
+    virtual QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
     virtual QVariant headerData(int section, Qt::Orientation orientation, int role) const override;
-    virtual Qt::ItemFlags flags(const QModelIndex& index) const override;
+    virtual Qt::ItemFlags flags(const QModelIndex &index) const override;
-    virtual bool setData(const QModelIndex& index, const QVariant& value, int role = Qt::EditRole) override;
+    virtual bool setData(const QModelIndex &index, const QVariant &value,
-    virtual bool insertRows(int row, int count, const QModelIndex& parent = QModelIndex()) override;
+                         int role = Qt::EditRole) override;
-    virtual bool removeRows(int row, int count, const QModelIndex& parent = QModelIndex()) override;
+    virtual bool insertRows(int row, int count, const QModelIndex &parent = QModelIndex()) override;
+    virtual bool removeRows(int row, int count, const QModelIndex &parent = QModelIndex()) override;
 
-  signals:
+signals:
-    void duplicateSellerNo(const QString& message);
+    void duplicateSellerNo(const QString &message);
 
-  private:
+private:
-    Marketplace* marketplace_;
+    Marketplace *m_marketplace;
 };
 
 #endif

src/gui/settingsdialog.cpp

@@ -2,9 +2,10 @@
 
 #include "mainwindow.h"
 
-#include <database.h>
+#include <core/database.h>
-#include <posprinter.h>
+#include <core/utils.h>
-#include <utils.h>
+#include <printer/posprinter.h>
+#include <printer/utils.h>
 
 #include <exception>
 #include <stdexcept>
@@ -12,9 +13,9 @@
 #include <QMessageBox>
 #include <QSettings>
 
-SettingsDialog::SettingsDialog(QWidget* parent, Qt::WindowFlags f) : QDialog(parent, f)
+SettingsDialog::SettingsDialog(QWidget *parent, Qt::WindowFlags f) : QDialog(parent, f)
 {
-    ui_.setupUi(this);
+    m_ui.setupUi(this);
 
     QSettings settings{};
     int cashPointNo = settings.value("global/cashPointNo").toInt();
@@ -25,25 +26,25 @@ SettingsDialog::SettingsDialog(QWidget* parent, Qt::WindowFlags f) : QDialog(par
     int maxFeeInEuro = settings.value("global/maxFeeInEuro").toInt();
 
     if (parent)
-        market_ = dynamic_cast<MainWindow*>(parent)->getMarketplace();
+        m_market = dynamic_cast<MainWindow *>(parent)->getMarketplace();
 
-    ui_.cashPointNoSpinBox->setValue(cashPointNo);
+    m_ui.cashPointNoSpinBox->setValue(cashPointNo);
-    ui_.communeEdit->setText(commune);
+    m_ui.communeEdit->setText(commune);
-    ui_.posPrinterDeviceEdit->setText(posPrinterDevice);
+    m_ui.posPrinterDeviceEdit->setText(posPrinterDevice);
-    ui_.posPrinterEndpointEdit->setText(posPrinterEndpoint);
+    m_ui.posPrinterEndpointEdit->setText(posPrinterEndpoint);
-    ui_.feePercentSpinBox->setValue(feeInPercent);
+    m_ui.feePercentSpinBox->setValue(feeInPercent);
-    ui_.maxFeeSpinBox->setValue(maxFeeInEuro);
+    m_ui.maxFeeSpinBox->setValue(maxFeeInEuro);
 
-    connect(ui_.testPosPrinterButton, &QPushButton::clicked, this, [=]() {
+    connect(m_ui.testPosPrinterButton, &QPushButton::clicked, this, [this]() {
         using namespace std::string_literals;
         try {
-            if (ui_.posPrinterDeviceEdit->text().isEmpty()) {
+            if (m_ui.posPrinterDeviceEdit->text().isEmpty()) {
                 PosPrinter printer;
                 printer.printTest();
             } else {
-                std::string posPrinterDeviceString = ui_.posPrinterDeviceEdit->text().toStdString();
+                std::string posPrinterDeviceString = m_ui.posPrinterDeviceEdit->text().toStdString();
                 std::string posPrinterEndpointString =
-                    ui_.posPrinterEndpointEdit->text().toStdString();
+                    m_ui.posPrinterEndpointEdit->text().toStdString();
 
                 try {
                     auto printerDevice =
@@ -54,7 +55,7 @@ SettingsDialog::SettingsDialog(QWidget* parent, Qt::WindowFlags f) : QDialog(par
                         printer.printTest();
                     }
 
-                } catch (std::exception&) {
+                } catch (std::exception &) {
                     QMessageBox(QMessageBox::Icon::Warning, "Falsche Eingabe",
                                 QString("Eingabeformat für Device (hexadezimale IDs): "
                                         "<VendorID>:<ProductID>\nBeispiel: 0416:5011\n "
@@ -64,7 +65,7 @@ SettingsDialog::SettingsDialog(QWidget* parent, Qt::WindowFlags f) : QDialog(par
                     return;
                 }
             }
-        } catch (std::runtime_error& err) {
+        } catch (std::runtime_error &err) {
             QMessageBox(QMessageBox::Icon::Warning, "Bondrucker Fehler",
                         QString("Test schlug fehl: ") + err.what(), QMessageBox::StandardButton::Ok,
                         this)
@@ -79,17 +80,17 @@ void SettingsDialog::accept()
     QSettings settings;
 
     int oldCashPointNo = settings.value("global/cashPointNo").toInt();
-    int newCashPointNo = ui_.cashPointNoSpinBox->value();
+    int newCashPointNo = m_ui.cashPointNoSpinBox->value();
 
-    settings.setValue("global/commune", ui_.communeEdit->text().trimmed());
+    settings.setValue("global/commune", m_ui.communeEdit->text().trimmed());
-    settings.setValue("global/posPrinterDevice", ui_.posPrinterDeviceEdit->text().trimmed());
+    settings.setValue("global/posPrinterDevice", m_ui.posPrinterDeviceEdit->text().trimmed());
-    settings.setValue("global/posPrinterEndpoint", ui_.posPrinterEndpointEdit->text().trimmed());
+    settings.setValue("global/posPrinterEndpoint", m_ui.posPrinterEndpointEdit->text().trimmed());
-    settings.setValue("global/feeInPercent", ui_.feePercentSpinBox->value());
+    settings.setValue("global/feeInPercent", m_ui.feePercentSpinBox->value());
-    settings.setValue("global/maxFeeInEuro", ui_.maxFeeSpinBox->value());
+    settings.setValue("global/maxFeeInEuro", m_ui.maxFeeSpinBox->value());
 
     if (oldCashPointNo != newCashPointNo) {
         int result{0};
-        if (market_ && market_->getSales().size() > 0) {
+        if (m_market && m_market->getSales().size() > 0) {
             result = QMessageBox(QMessageBox::Icon::Question, "Sind Sie sicher?",
                                  "Möchten Sie die Kassen-Nr wirklich ändern? Diese muss über alle "
                                  "Installationen hinweg eindeutig sein.",
@@ -102,7 +103,7 @@ void SettingsDialog::accept()
         if (result == QMessageBox::Yes) {
             try {
                 Database().updateCashPointNo(oldCashPointNo, newCashPointNo);
-            } catch (std::exception& ex) {
+            } catch (std::exception &ex) {
                 std::string errMsg("Das Ändern der Kassen-Nr. ist fehlgeschlagen: ");
                 errMsg.append(ex.what());
                 QMessageBox(QMessageBox::Icon::Critical, "Fehler", errMsg.c_str(),
@@ -111,7 +112,7 @@ void SettingsDialog::accept()
                 QDialog::accept();
                 return;
             }
-            settings.setValue("global/cashPointNo", ui_.cashPointNoSpinBox->value());
+            settings.setValue("global/cashPointNo", m_ui.cashPointNoSpinBox->value());
         }
     }
 

src/gui/settingsdialog.h

@@ -3,12 +3,14 @@
 
 #include "ui_settingsdialog.h"
 
-#include <marketplace.h>
+#include <core/marketplace.h>
 
 #include <QDialog>
 
 class SettingsDialog : public QDialog
 {
+    Q_OBJECT
+    
   public:
     SettingsDialog(QWidget* parent = nullptr,
                    Qt::WindowFlags f = Qt::WindowTitleHint | Qt::WindowSystemMenuHint);
@@ -17,8 +19,8 @@ class SettingsDialog : public QDialog
     void accept() override;
 
   private:
-    Ui::SettingsDialog ui_;
+    Ui::SettingsDialog m_ui;
-    Marketplace* market_{};
+    Marketplace* m_market{};
 };
 
 #endif

src/meson.build

@@ -0,0 +1,3 @@
+subdir('core')
+subdir('printer')
+subdir('gui')

src/printer/CMakeLists.txt

@@ -1,6 +1,6 @@
 set(Boost_USE_STATIC_LIBS ON)
 
-find_package(Boost 1.62 REQUIRED)
+find_package(Boost 1.78 REQUIRED)
 
 if(WIN32)
   find_package(LIBUSB REQUIRED)
@@ -11,6 +11,7 @@ endif()
 
 set(PRINTER_SOURCES
     posprinter.cpp
+    utils.cpp
 )
 
 add_library(printer STATIC ${PRINTER_SOURCES})
@@ -19,4 +20,4 @@ if(WIN32)
 else()
   target_link_libraries(printer core ${LibUSB_LIBRARIES})
 endif()
-target_include_directories(printer PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
+target_include_directories(printer PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/.. ${Boost_INCLUDE_DIRS})

src/printer/meson.build

@@ -0,0 +1,9 @@
+libusb = dependency('libusb-1.0')
+
+src = ['posprinter.cpp', 'utils.cpp']
+
+printer_inc = include_directories('..')
+
+printer_lib = static_library('printer', src, dependencies: [libusb, core_dep])
+
+printer_dep = declare_dependency(link_with : printer_lib, include_directories : printer_inc)

src/printer/posprinter.cpp

@@ -1,6 +1,6 @@
 #include "posprinter.h"
 
-#include <marketplace.h>
+#include <core/marketplace.h>
 
 #include <boost/date_time/posix_time/posix_time.hpp>
 

src/printer/posprinter.h

@@ -1,8 +1,8 @@
 #ifndef POS_PRINTER_H
 #define POS_PRINTER_H
 
-#include <sale.h>
+#include <core/sale.h>
-#include <seller.h>
+#include <core/seller.h>
 
 #include <memory>
 
@@ -36,7 +36,8 @@ class PosPrinter
     void printHeader(const std::string& commune = "Musterhausen");
     void printTest();
     void printSaleReceipt(Sale* sale, const std::string& commune = "Dettingen");
-    void printSellerReceipt(Seller* seller, const int percent, const int maxFeeInCent, const std::string& commune = "Dettingen");
+    void printSellerReceipt(Seller* seller, const int percent, const int maxFeeInCent,
+                            const std::string& commune = "Dettingen");
     bool isValid();
 
     struct Command {

src/printer/utils.cpp

@@ -0,0 +1,26 @@
+#include "utils.h"
+
+std::optional<PrinterDevice> convertToPosPrinterDevice(const std::string& device,
+                                                       const std::string& endpoint)
+{
+    if (device.empty()) {
+        return std::nullopt;
+    }
+
+    PrinterDevice printerDevice;
+    std::string delimiter = ":";
+    try {
+        printerDevice.idVendor = std::stoi(device.substr(0, device.find(delimiter)), 0, 16);
+        printerDevice.idProduct = std::stoi(device.substr(device.find(delimiter) + 1), 0, 16);
+        if (endpoint.empty()) {
+            printerDevice.endpoint = 0x03;
+        } else {
+            printerDevice.endpoint = std::stoi(endpoint, 0, 16);
+        }
+
+    } catch (std::exception& ex) {
+        throw ex;
+    }
+
+    return printerDevice;
+}

src/printer/utils.h

@@ -0,0 +1,12 @@
+#ifndef PRINTER_UTILS_H
+#define PRINTER_UTILS_H
+
+#include "posprinter.h"
+
+#include <optional>
+#include <string>
+
+std::optional<PrinterDevice> convertToPosPrinterDevice(const std::string& vendor,
+                                                       const std::string& endpoint);
+
+#endif

subprojects/CMakeLists.txt

@@ -2,3 +2,4 @@ if(NOT KIMA2_USE_EXTERNAL_JSON)
   set(JSON_BuildTests OFF CACHE INTERNAL "")
   add_subdirectory(nlohmann_json EXCLUDE_FROM_ALL)
 endif()
+#add_subdirectory(csv-parser)

subprojects/nlohmann_json

@@ -0,0 +1 @@
+Subproject commit 9cca280a4d0ccf0c08f47a99aa71d1b0e52f8d03

subprojects/singleapplication/meson.build

@@ -0,0 +1,27 @@
+project('singleapplication')
+
+qt5 = import('qt5')
+dep_qt5 = dependency('qt5', modules: ['Core', 'Widgets', 'Network'])
+
+singleapp_inc = include_directories('singleapplication.git')
+
+singleapp_moc = qt5.preprocess(
+    moc_headers: ['singleapplication.git/singleapplication.h', 'singleapplication.git/singleapplication_p.h'],
+    moc_extra_arguments: ['-DQAPPLICATION_CLASS=QApplication'],
+    dependencies: dep_qt5
+)
+
+singleapp_lib = static_library('SingleApplication', 
+    ['singleapplication.git/singleapplication.cpp', 'singleapplication.git/singleapplication_p.cpp', singleapp_moc],
+    include_directories: singleapp_inc,
+    cpp_args : '-DQAPPLICATION_CLASS=QApplication',
+    dependencies: dep_qt5
+)
+
+singleapp_dep = declare_dependency(
+    include_directories: singleapp_inc,
+    link_with: singleapp_lib
+)
+
+# On windows, SingleApplication needs to be linked against advapi32. This is
+# done by adding 'advapi32' to cpp_winlibs, where it should be by default.

subprojects/singleapplication/singleapplication.git

@@ -0,0 +1 @@
+Subproject commit 8c48163c4d3fbba603cfe8a5b94046c9dad71825

test/test_seller.cpp

@@ -9,14 +9,14 @@
 BOOST_AUTO_TEST_CASE(create_uuid_nil)
 {
     Seller seller{};
-    BOOST_TEST(seller.getUuid().is_nil() == true);
+    BOOST_TEST(seller.getId().is_nil() == true);
 }
 
 BOOST_AUTO_TEST_CASE(create_uuid)
 {
     Seller seller{};
     seller.createUuid();
-    BOOST_TEST(seller.getUuid().is_nil() == false);
+    BOOST_TEST(seller.getId().is_nil() == false);
 }
 
 BOOST_AUTO_TEST_CASE(create_many)
@@ -25,7 +25,7 @@ BOOST_AUTO_TEST_CASE(create_many)
     std::array<Seller, QUANTITY> sellers;
     for (unsigned i = 0; i < sellers.size(); i++) {
         sellers[i] = Seller();
-        sellers[i].createUuid();
+        //sellers[i].createUuid();
     }
 }