#ifndef IPLUGIN_H
#define IPLUGIN_H

#include <QString>
#include <QWidget>
#include <QtPlugin>
#include <QJsonObject>
#include <QStringList>
#include <QIcon>
#include <QTranslator>
#include <QMessageBox>

#include "service.h"
#include "igridform.h"
#include "reporting/report.h"

class IPlugin
{

public:
    IPlugin() = default;

    virtual ~IPlugin() {
        delete m_service;
        delete m_translator;

        if (m_ui != nullptr && m_ui->parent() == nullptr)
        {
            delete m_ui;
        }

        if (m_settingsUi != nullptr && m_settingsUi->parent() == nullptr)
        {
            delete m_settingsUi;
        }
    }

    virtual QString pluginName() = 0;
    virtual QString pluginId() = 0;
    virtual QString pluginDescription() = 0;
    virtual int schemaVersion() = 0;
    virtual QStringList schemas() = 0;
    virtual QStringList dependsOn() = 0;
    virtual ReportList reports() = 0;

    virtual void init(const QJsonObject &metaData) = 0;

    virtual QWidget *ui() {
        PermissionEvaluator permEv;
        if (!permEv.hasPermission(pluginId(), PERM_READ))
        {
            QMessageBox::critical(m_ui, QObject::tr("Permission denied"), QObject::tr("You don't have permission to open this plugin."));
            return nullptr;
        }

        IGridForm *form = qobject_cast<IGridForm*>(m_ui);
        bool filled = true;

        if (form != nullptr)
        {
            filled = form->fillData();
        }

        return filled ? m_ui : nullptr;
    }

    QList<QFrame*> dasboardWidgets() {
        return m_dashboardWidgets;
    }

    virtual QWidget *settingsUi() {
        return m_settingsUi;
    }

    virtual QString settingsTabLabel() {
        return pluginName();
    }

    template<class T>
    Service<T> *service() {
        return (Service<T>*)m_service;
    }

    virtual bool showIcon() { return true; }
    virtual QTranslator* translator() { return nullptr; }
    virtual QIcon pluginIcon() { return {}; }
    QMap<QString, QString> translations() { return m_translations; }

    virtual bool hasNumberSeries() { return false; }
    virtual QString numberSeriesPrefix() { return ""; }

protected:
    QTranslator* translatorFrom(const QString& fileName) {
        if (!m_translator) {
            m_translator = new QTranslator();

            if (!m_translator->load(fileName + QLocale::system().name())) {
                qDebug() << "Cannot load translation";
            }
        }

        return m_translator;
    }

    QTranslator* m_translator{nullptr};
    QWidget *m_ui {nullptr};
    QWidget *m_settingsUi {nullptr};
    IService *m_service {nullptr};
    QMap<QString, QString> m_translations;
    QList<QFrame*> m_dashboardWidgets;
};

#define PluginInterface_iid "cz.itsolved.prodejna.IPlugin"

Q_DECLARE_INTERFACE(IPlugin, PluginInterface_iid)

#endif // IPLUGIN_H