#ifndef DATAFILESPAGE_H
#define DATAFILESPAGE_H

#include "ui_datafilespage.h"

#include <components/process/processinvoker.hpp>

#include <QDir>
#include <QStringList>
#include <QWidget>

class QSortFilterProxyModel;
class QAbstractItemModel;
class QMenu;

namespace Files
{
    struct ConfigurationManager;
}
namespace ContentSelectorView
{
    class ContentSelector;
}
namespace Config
{
    class GameSettings;
    class LauncherSettings;
}

namespace Launcher
{
    class MainDialog;
    class TextInputDialog;
    class ProfilesComboBox;

    class DataFilesPage : public QWidget
    {
        Q_OBJECT

        ContentSelectorView::ContentSelector* mSelector;
        Ui::DataFilesPage ui;

    public:
        explicit DataFilesPage(Files::ConfigurationManager& cfg, Config::GameSettings& gameSettings,
            Config::LauncherSettings& launcherSettings, MainDialog* parent = nullptr);

        QAbstractItemModel* profilesModel() const;

        int profilesIndex() const;

        // void writeConfig(QString profile = QString());
        void saveSettings(const QString& profile = "");
        bool loadSettings();

    signals:
        void signalProfileChanged(int index);
        void signalLoadedCellsChanged(QStringList selectedFiles);

    public slots:
        void slotProfileChanged(int index);

    private slots:

        void slotProfileChangedByUser(const QString& previous, const QString& current);
        void slotProfileRenamed(const QString& previous, const QString& current);
        void slotProfileDeleted(const QString& item);
        void slotAddonDataChanged();
        void slotRefreshButtonClicked();

        void updateNewProfileOkButton(const QString& text);
        void updateCloneProfileOkButton(const QString& text);
        void addSubdirectories(bool append);
        void sortDirectories();
        void removeDirectory();
        void moveArchive(int step);
        void moveDirectory(int step);

        void on_newProfileAction_triggered();
        void on_cloneProfileAction_triggered();
        void on_deleteProfileAction_triggered();

        void startNavMeshTool();
        void killNavMeshTool();
        void readNavMeshToolStdout();
        void readNavMeshToolStderr();
        void navMeshToolFinished(int exitCode, QProcess::ExitStatus exitStatus);

    public:
        /// Content List that is always present
        const static char* mDefaultContentListName;

    private:
        struct NavMeshToolProgress
        {
            QByteArray mLogData;
            QByteArray mMessagesData;
            std::map<std::uint64_t, std::string> mWorldspaces;
            int mCellsCount = 0;
            int mExpectedMaxProgress = 0;
        };

        MainDialog* mMainDialog;
        TextInputDialog* mNewProfileDialog;
        TextInputDialog* mCloneProfileDialog;

        Files::ConfigurationManager& mCfgMgr;

        Config::GameSettings& mGameSettings;
        Config::LauncherSettings& mLauncherSettings;

        QString mPreviousProfile;
        QStringList previousSelectedFiles;
        QString mDataLocal;
        QStringList mKnownArchives;
        QStringList mNewDataDirs;

        Process::ProcessInvoker* mNavMeshToolInvoker;
        NavMeshToolProgress mNavMeshToolProgress;

        void addArchive(const QString& name, Qt::CheckState selected, int row = -1);
        void addArchivesFromDir(const QString& dir);
        void buildView();
        void setProfile(int index, bool savePrevious);
        void setProfile(const QString& previous, const QString& current, bool savePrevious);
        void removeProfile(const QString& profile);
        bool showDeleteMessageBox(const QString& text);
        void addProfile(const QString& profile, bool setAsCurrent);
        void checkForDefaultProfile();
        void populateFileViews(const QString& contentModelName);
        void reloadCells(QStringList selectedFiles);
        void refreshDataFilesView();
        void updateNavMeshProgress(int minDataSize);
        QString selectDirectory();

        /**
         * Returns the file paths of all selected content files
         * @return the file paths of all selected content files
         */
        QStringList selectedFilePaths() const;
        QStringList selectedArchivePaths(bool all = false) const;
        QStringList selectedDirectoriesPaths() const;

        class PathIterator
        {
            QStringList::ConstIterator mCitEnd;
            QStringList::ConstIterator mCitCurrent;
            QStringList::ConstIterator mCitBegin;
            QString mFile;
            QString mFilePath;

        public:
            PathIterator(const QStringList& list)
            {
                mCitBegin = list.constBegin();
                mCitCurrent = mCitBegin;
                mCitEnd = list.constEnd();
            }

            QString findFirstPath(const QString& file)
            {
                mCitCurrent = mCitBegin;
                mFile = file;
                return path();
            }

            QString findNextPath() { return path(); }

        private:
            QString path()
            {
                bool success = false;
                QDir dir;
                QFileInfo file;

                while (!success)
                {
                    if (mCitCurrent == mCitEnd)
                        break;

                    dir.setPath(*(mCitCurrent++));
                    file.setFile(dir.absoluteFilePath(mFile));

                    success = file.exists();
                }

                if (success)
                    return file.absoluteFilePath();

                return "";
            }
        };

        QStringList filesInProfile(const QString& profileName, PathIterator& pathIterator);
    };
}
#endif