#include <QVBoxLayout>
#include <QtWidgets>
#include <format>
#include <fstream>
#include <nlohmann/json.hpp>
#include <qapplication.h>
#include <qboxlayout.h>
#include <qgridlayout.h>
#include <qlistwidget.h>
#include <qmenubar.h>
#include <qnamespace.h>
#include <qpushbutton.h>
#include <qtoolbar.h>
#include <qwidget.h>

class MainWindowMediator {
  public:
    MainWindowMediator &registerListOfCardsWidget(std::shared_ptr<QListWidget> &iListOfCards) {
        _listOfCardsWidget = iListOfCards;
        _listOfCardsWidget->hide();
        return *this;
    }
    MainWindowMediator &registerMainWindow(std::shared_ptr<QWidget> &iMainWindow) {
        _mainWindow = iMainWindow;
        return *this;
    }
    MainWindowMediator &registerMainMenuBar(std::shared_ptr<QMenuBar> &iMenuBar) {
        _mainMenuBar = iMenuBar;
        configureMainMenuBar();
        return *this;
    }
    MainWindowMediator &registerRightView(std::shared_ptr<QGraphicsView> &iRightView) {
        _rightView = iRightView;
        _rightScene = std::make_shared<QGraphicsScene>();
        QGraphicsRectItem *rect = _rightScene->addRect(QRectF(0, 0, 100, 100));
        QGraphicsItem *item = _rightScene->itemAt(50, 50, QTransform());
        _rightView->setScene(_rightScene.get());
        _rightView->hide();
        return *this;
    }
    std::shared_ptr<QWidget> getListOfCardsWidget() { return _listOfCardsWidget; }
    std::shared_ptr<QWidget> getMainWindow() { return _mainWindow; }
    std::shared_ptr<QMenuBar> getMainMenuBar() { return _mainMenuBar; }
    std::shared_ptr<QGraphicsView> getRightView() { return _rightView; }

    MainWindowMediator &fillListOfCards(const std::string &iCardsJsonPath) {
        std::ifstream aCardsJsonFile{iCardsJsonPath};
        uint64_t aCardIndex{0};
        _listOfCardsWidget->clear();
        for (auto &aCard : nlohmann::json::parse(aCardsJsonFile)) {
            _listOfCardsWidget->insertItem(aCardIndex++,
                                           std::format("{} ({})", aCard["name"].get<std::string>(),
                                                       aCard["id"].get<uint64_t>())
                                               .c_str());
        }
        _listOfCardsWidget->setVisible(true);
        _listOfCardsWidget->setFixedWidth(_listOfCardsWidget->sizeHintForColumn(0) +
                                          2 * _listOfCardsWidget->frameWidth() + 20);
        _mainWindow->resize(1500, 1000);
        return *this;
    }

  private:
    std::shared_ptr<QListWidget> _listOfCardsWidget;
    std::shared_ptr<QWidget> _mainWindow;
    std::shared_ptr<QMenuBar> _mainMenuBar;
    std::shared_ptr<QGraphicsView> _rightView;
    std::shared_ptr<QGraphicsScene> _rightScene;

    void configureMainMenuBar() {
        QMenu *aOpenMenu = _mainMenuBar->addMenu("File");
        aOpenMenu->addAction("Open JSON file", [this] {
            QFileDialog aFileDialog;
            aFileDialog.setWindowTitle("Choose JSON file");
            QDir aCurrentDir{QDir::currentPath()};
            aFileDialog.setDirectory(aCurrentDir);
            aFileDialog.setFileMode(QFileDialog::ExistingFile);
            aFileDialog.setOption(QFileDialog::ShowDirsOnly, false);
            aFileDialog.setNameFilter("*.json");
            aFileDialog.exec();
            const QStringList kFilePaths{aFileDialog.selectedFiles()};
            if (kFilePaths.size() > 0) {
                fillListOfCards(kFilePaths[0].toStdString());
                _rightView->setVisible(true);
            }
        });
        aOpenMenu->addAction("Quit", [this] { getMainWindow()->close(); });
    }
};

int main(int argc, char *argv[]) {
    QApplication aApplication(argc, argv);
    auto aWindow = std::make_shared<QWidget>();
    aWindow->resize(400, 50);
    // Set Dialog flag for i3 users
    aWindow->setWindowFlag(Qt::WindowType::Dialog);

    QGridLayout aLayout(aWindow.get());
    QHBoxLayout aHLayout(aLayout.widget());
    auto aMenuBar = std::make_shared<QMenuBar>();
    aLayout.addWidget(aMenuBar.get(), 0, 0);
    auto aListOfCards = std::make_shared<QListWidget>();
    aLayout.addLayout(&aHLayout, 1, 0);
    aHLayout.addWidget(aListOfCards.get());
    auto aRightView = std::make_shared<QGraphicsView>();
    aHLayout.addWidget(aRightView.get());

    MainWindowMediator aMainWindowMediator;
    aMainWindowMediator.registerListOfCardsWidget(aListOfCards)
        .registerMainWindow(aWindow)
        .registerMainMenuBar(aMenuBar)
        .registerRightView(aRightView);

    aWindow->show();
    aWindow->setWindowTitle("Hearthstone simulator");
    return aApplication.exec();
}