more on sellers

src/core/marketplace.cpp

@@ -1,9 +1,12 @@
 #include "marketplace.h"
 #include "database.h"
 
+#include <algorithm>
+
 Marketplace::Marketplace()
 {
     auto seller = std::make_unique<Seller>("Max", "Mustermann");
+    seller->createUuid();
     sellers_.push_back(std::move(seller));
 }
 
@@ -12,7 +15,20 @@ void Marketplace::storeToDb()
     const std::string DB_PATH{"/tmp/kima2.db"};
 
     Database db(DB_PATH);
+    db.init();
     db.storeSellers(sellers_);
 }
 
-std::vector<std::unique_ptr<Seller>>& Marketplace::getSellers() { return sellers_; }
+void Marketplace::loadFromDb() {}
+
+std::vector<std::unique_ptr<Seller>>& Marketplace::getSellers() { return sellers_; }
+
+int Marketplace::getNextSellerNo()
+{
+    auto iter = std::max_element(
+        sellers_.begin(), sellers_.end(),
+        [](const std::unique_ptr<Seller>& a, const std::unique_ptr<Seller>& b) -> bool {
+            return a->getSellerNo() < b->getSellerNo();
+        });
+    return (*iter)->getSellerNo() + 1;
+}

src/core/marketplace.h

@@ -14,6 +14,7 @@ class Marketplace
     void storeToDb();
     void loadFromDb();
     std::vector<std::unique_ptr<Seller>>& getSellers();
+    int getNextSellerNo();
 
   private:
     std::vector<std::unique_ptr<Seller>> sellers_;