#include "marketplace.h"
#include "database.h"

#include <algorithm>
#include <iomanip>
#include <numeric>
#include <sstream>

Marketplace::Marketplace()
{
    auto seller = std::make_unique<Seller>("Max", "Mustermann");
    seller->createUuid();
    sellers_.push_back(std::move(seller));
}

void Marketplace::storeToDb(bool onlyDelete)
{
    Database db;
    db.storeSellers(sellers_, onlyDelete);
}

void Marketplace::loadFromDb()
{
    Database db;
    db.loadSellers(sellers_);
}

SellersVec& Marketplace::getSellers() { return sellers_; }

int Marketplace::getNextSellerNo()
{
    auto iter = std::max_element(
        sellers_.begin(), sellers_.end(),
        [](const auto& a, const auto& b) -> bool { return a->getSellerNo() < b->getSellerNo(); });
    if (iter == sellers_.end())
        return 1;
    return (*iter)->getSellerNo() + 1;
}

int Marketplace::getNextArticleNo()
{
    int maxArtNoInDb{0};
    int maxArtNoInBasket{0};

    auto iter = std::max_element(sellers_.begin(), sellers_.end(),
                                 [](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 {
            return a->getArticleNo() < b->getArticleNo();
        });

    if (iter2 != basket_.end())
        maxArtNoInBasket = (*iter2)->getArticleNo();

    return maxArtNoInBasket > maxArtNoInDb ? maxArtNoInBasket + 1 : maxArtNoInDb + 1;
}

int Marketplace::getNumSellersDelete()
{
    int count = std::count_if(sellers_.begin(), sellers_.end(),
                              [](const auto& a) { return a->getState() == Seller::State::DELETE; });
    return count;
}

void Marketplace::sortSellers() { std::sort(sellers_.begin(), sellers_.end()); }

Seller* Marketplace::findSellerWithSellerNo(int sellerNo)
{
    auto iter = std::find_if(sellers_.begin(), sellers_.end(),
                             [sellerNo](const auto& a) { return a->getSellerNo() == sellerNo; });
    if (iter == sellers_.end())
        return nullptr;
    return (*iter).get();
}

void Marketplace::addArticleToBasket(std::unique_ptr<Article> article)
{
    basket_.push_back(std::move(article));
}

size_t Marketplace::basketSize() { return basket_.size(); }

void Marketplace::finishCurrentSale()
{
    if (basket_.size() == 0)
        return;

    auto sale = std::make_unique<Sale>();

    for (auto iter = basket_.begin(); iter != basket_.end(); ++iter) {
        sale->addArticle((*iter).get());
        (*iter)->getSeller()->addArticle(std::move(*iter));
    }

    sales_.push_back(std::move(sale));
    basket_.clear();
    storeToDb();
}

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(); });
    return sum;
}

std::string Marketplace::getBasketSumAsString()
{
    int sumInCent = getBasketSumInCent();
    // double sumInEuro = sumInCent / 100.0L;
    // std::stringstream sumStream;
    // sumStream << std::fixed << std::setprecision(2) << sumInEuro << " €";
    // return sumStream.str();
    std::stringstream sumStream;
    //sumStream.imbue(std::locale("de_DE.utf8"));
    sumStream << std::right << std::setw(12) << std::showbase << std::put_money(sumInCent, false);
    return sumStream.str();
}