/*
 * Copyright 2014-2020 Markus Prasser
 *
 * This file is part of Labcontrol.
 *
 *  Labcontrol is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  Labcontrol is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with Labcontrol.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

enum class icons_t : unsigned short int {
  UNKNOWN,
  OFF,
  DOWN,
  BOOT,
  ON,
  ZLEAF,
  ICON_QUANTITY
};

#include "Lib/client.h"
#include "Lib/lablib.h"
#include "ui_mainwindow.h"

#include <cmath>

#include <QDir>
#include <QFileDialog>
#include <QMainWindow>
#include <QSettings>
#include <QStandardItemModel>
#include <QThread>
#include <QTimer>
#include <QVector>

namespace lc {

namespace Ui {
class MainWindow;
}

//! The class containing the graphical user interface.
/*!
  This class represents the graphical user interface and all connected
  functionality.
*/
class MainWindow : public QMainWindow {
  Q_OBJECT

public:
  explicit MainWindow(QWidget *argParent = nullptr);
  ~MainWindow();

private slots:
  void on_CBWebcamChooser_activated(int index);
  void on_PBBeamFile_clicked();
  void on_PBBoot_clicked();
  void on_PBChooseFile_clicked();
  void on_PBExecute_clicked();
  void on_PBKillLocalzLeaf_clicked();
  void on_PBOpenFilesystem_clicked();
  void on_PBOpenTerminal_clicked();
  void on_PBPrintPaymentFileManually_clicked();
  void on_PBRunzLeaf_clicked();
  void on_PBShowORSEE_clicked();
  void on_PBShowPreprints_clicked();
  void on_PBShutdown_clicked();
  void on_PBStartLocalzLeaf_clicked();
  void on_PBStartSession_clicked();
  void on_PBStartzLeaf_clicked();
  void on_PBViewDesktopViewOnly_clicked();
  void on_PBViewDesktopFullControl_clicked();
  void on_RBUseLocalUser_toggled(bool checked);
  void StartLocalzLeaf(const QString &argzLeafName,
                       const QString &argzLeafVersion, quint16 argzTreePort);
  //! Updates the icons of the QTableView displaying the clients' states
  /*!
   * This function iterates over all valid items of the 'TVClients' and sets
   * their states by querying the represented 'lcClient' instances.
   */
  void UpdateClientsTableView();

signals:
  /*Session actions*/
  void RequestNewDataTargetPath();
  void RequestNewSession(QVector<Client *> argAssocCl,
                         QString argParticipNameReplacement,
                         bool argPrintLocalReceipts, QString argReceiptsHeader,
                         QString argzTreeDataTargetPath, quint16 argzTreePort,
                         QString argzTreeVersion);

private:
  //! Checks, if the user has administrative rights
  /*!
    @return Returns true, if the user has administrative rights (If the user is
    in the 'sudo' group)
  */
  bool CheckIfUserIsAdmin();
  //! Disables widgets for functions not available due to lacking devices or
  //! settings
  void DisableDisfunctionalWidgets();
  //! Loads all needed client icon QPixmaps
  void LoadIconPixmaps();
  //! Sets up all used widgets
  void SetupWidgets();

  QStandardItemModel *clients_view_model =
      nullptr; //! The view storing all clients data
  QTimer *gui_update_timer =
      nullptr; //! A QTimer triggering updates of the graphical user interface
  QVector<QPixmap> icons; //! Vector of pixmaps storing the icons indicating the
                          //! clients' statuses
  Lablib *lablib =
      nullptr; //! Accumulator of all program logic being accessed by the GUI
  bool localzLeavesAreRunning =
      false; //! Stores if a local z-Leaf instance is running on the server
             //! ('true' if local z-Leaf exists)
  QButtonGroup *userChooseButtonGroup =
      nullptr; //! Used to group the radio buttons choosing which user shall be
               //! used for administrative client actions
  Ui::MainWindow *ui = nullptr; //! Pointer storing all GUI items
  QVector<QStandardItem *> *valid_items =
      nullptr; //! Stores all valid Client instances displayed by the table
               //! view, its main use is as iterable object for
               //! 'update_clients_table_view()'

private slots:
  void StartReceiptsHandler(QString argzTreeDataTargetPath,
                            bool argReceiptsForLocalClients,
                            QString argAnonymousReceiptsPlaceholder,
                            QString argLatexHeaderName, QString argDateString);
  void on_PBstartBrowser_clicked();
  void on_PBstopBrowser_clicked();

  /* Session actions */
  void on_PBStopZtree_clicked();
  void on_PBRecoverCrashedSession_clicked();
  void GetNewDataTargetPath();
  void on_CBDataTargetPath_activated(int argIndex);
  void on_CBReceiptsHeader_activated(int argIndex);
  void on_ChBPrintanonymousreceipts_clicked();
  void on_PBKillzLeaf_clicked();
  void on_PBEnableRMB_clicked();
  void on_PBDisableRMB_clicked();
};

} // namespace lc

#endif // MAINWINDOW_H