// Copyright(c) 2017-2019 Alejandro Sirgo Rica & Contributors
//
// This file is part of Flameshot.
//
//     Flameshot 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.
//
//     Flameshot 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 Flameshot.  If not, see <http://www.gnu.org/licenses/>.

#include "geneneralconf.h"
#include "filepathconfiguration.h"
#include "src/core/controller.h"
#include "src/utils/confighandler.h"
#include "src/utils/filenamehandler.h"
#include "src/tools/storage/imgstorages.h"
#include "src/utils/confighandler.h"
#include <QCheckBox>
#include <QFile>
#include <QFileDialog>
#include <QGroupBox>
#include <QHBoxLayout>
#include <QLineEdit>
#include <QMessageBox>
#include <QPushButton>
#include <QRadioButton>
#include <QStandardPaths>
#include <QTextCodec>
#include <QVBoxLayout>
GeneneralConf::GeneneralConf(QWidget* parent)
  : QWidget(parent)
{
    m_layout = new QVBoxLayout(this);
    m_layout->setAlignment(Qt::AlignTop);
    initShowHelp();
    initShowSidePanelButton();
    initShowDesktopNotification();
    initShowTrayIcon();
    initAutostart();
    initShowStartupLaunchMessage();
    initCloseAfterCapture();
    initCopyAndCloseAfterUpload();
    initSaveAfterCopy();
    initCopyPathAfterSave();
    initUploadStorage();
    initFilePathConfiguration();

    // this has to be at the end
    initConfingButtons();
    updateComponents();
}

void GeneneralConf::updateComponents()
{
    ConfigHandler config;
    m_helpMessage->setChecked(config.showHelpValue());
    m_sidePanelButton->setChecked(config.showSidePanelButtonValue());
    m_sysNotifications->setChecked(config.desktopNotificationValue());
    m_autostart->setChecked(config.startupLaunchValue());
    m_closeAfterCapture->setChecked(config.closeAfterScreenshotValue());
    m_copyAndCloseAfterUpload->setChecked(
      config.copyAndCloseAfterUploadEnabled());
    m_saveAfterCopy->setChecked(config.saveAfterCopyValue());

    if (!config.saveAfterCopyPathValue().isEmpty()) {
        m_savePath->setText(config.saveAfterCopyPathValue());
    } else {
        ConfigHandler().setSaveAfterCopyPath(
          QStandardPaths::writableLocation(QStandardPaths::PicturesLocation));
    }
    m_copyPathAfterSave->setChecked(config.copyPathAfterSaveEnabled());

#if defined(Q_OS_LINUX) || defined(Q_OS_UNIX)
    m_showTray->setChecked(!config.disabledTrayIconValue());
#endif
}

void GeneneralConf::showHelpChanged(bool checked)
{
    ConfigHandler().setShowHelp(checked);
}

void GeneneralConf::showSidePanelButtonChanged(bool checked)
{
    ConfigHandler().setShowSidePanelButton(checked);
}

void GeneneralConf::showDesktopNotificationChanged(bool checked)
{
    ConfigHandler().setDesktopNotification(checked);
}

void GeneneralConf::showTrayIconChanged(bool checked)
{
    auto controller = Controller::getInstance();
    if (checked) {
        controller->enableTrayIcon();
    } else {
        controller->disableTrayIcon();
    }
}

void GeneneralConf::autostartChanged(bool checked)
{
    ConfigHandler().setStartupLaunch(checked);
}

void GeneneralConf::showStartupLaunchMessageChanged(bool checked)
{
    ConfigHandler().setShowStartupLaunchMessage(checked);
}

void GeneneralConf::closeAfterCaptureChanged(bool checked)
{
    ConfigHandler().setCloseAfterScreenshot(checked);
}

void GeneneralConf::importConfiguration()
{
    QString fileName = QFileDialog::getOpenFileName(this, tr("Import"));
    if (fileName.isEmpty()) {
        return;
    }
    QFile file(fileName);
    QTextCodec* codec = QTextCodec::codecForLocale();
    if (!file.open(QFile::ReadOnly)) {
        QMessageBox::about(this, tr("Error"), tr("Unable to read file."));
        return;
    }
    QString text = codec->toUnicode(file.readAll());
    file.close();

    QFile config(ConfigHandler().configFilePath());
    if (!config.open(QFile::WriteOnly)) {
        QMessageBox::about(this, tr("Error"), tr("Unable to write file."));
        return;
    }
    config.write(codec->fromUnicode(text));
    config.close();
}

void GeneneralConf::exportFileConfiguration()
{
    QString fileName = QFileDialog::getSaveFileName(
      this, tr("Save File"), QStringLiteral("flameshot.conf"));

    // Cancel button
    if (fileName.isNull()) {
        return;
    }

    QFile targetFile(fileName);
    if (targetFile.exists()) {
        targetFile.remove();
    }
    bool ok = QFile::copy(ConfigHandler().configFilePath(), fileName);
    if (!ok) {
        QMessageBox::about(this, tr("Error"), tr("Unable to write file."));
    }
}

void GeneneralConf::resetConfiguration()
{
    QMessageBox::StandardButton reply;
    reply = QMessageBox::question(
      this,
      tr("Confirm Reset"),
      tr("Are you sure you want to reset the configuration?"),
      QMessageBox::Yes | QMessageBox::No);
    if (reply == QMessageBox::Yes) {
        ConfigHandler().setDefaults();
    }
}

void GeneneralConf::initShowHelp()
{
    m_helpMessage = new QCheckBox(tr("Show help message"), this);
    ConfigHandler config;
    bool checked = config.showHelpValue();
    m_helpMessage->setChecked(checked);
    m_helpMessage->setToolTip(tr("Show the help message at the beginning "
                                 "in the capture mode."));
    m_layout->addWidget(m_helpMessage);

    connect(m_helpMessage,
            &QCheckBox::clicked,
            this,
            &GeneneralConf::showHelpChanged);
}

void GeneneralConf::initShowSidePanelButton()
{
    m_sidePanelButton = new QCheckBox(tr("Show the side panel button"), this);
    m_sidePanelButton->setChecked(ConfigHandler().showSidePanelButtonValue());
    m_sidePanelButton->setToolTip(
      tr("Show the side panel toggle button in the capture mode."));
    m_layout->addWidget(m_sidePanelButton);

    connect(m_sidePanelButton,
            &QCheckBox::clicked,
            this,
            &GeneneralConf::showSidePanelButtonChanged);
}
void GeneneralConf::initShowDesktopNotification()
{
    m_sysNotifications = new QCheckBox(tr("Show desktop notifications"), this);
    ConfigHandler config;
    bool checked = config.desktopNotificationValue();
    m_sysNotifications->setChecked(checked);
    m_sysNotifications->setToolTip(tr("Show desktop notifications"));
    m_layout->addWidget(m_sysNotifications);

    connect(m_sysNotifications,
            &QCheckBox::clicked,
            this,
            &GeneneralConf::showDesktopNotificationChanged);
}

void GeneneralConf::initShowTrayIcon()
{
#if defined(Q_OS_LINUX) || defined(Q_OS_UNIX)
    m_showTray = new QCheckBox(tr("Show tray icon"), this);
    ConfigHandler config;
    bool checked = !config.disabledTrayIconValue();
    m_showTray->setChecked(checked);
    m_showTray->setToolTip(tr("Show the systemtray icon"));
    m_layout->addWidget(m_showTray);

    connect(m_showTray,
            &QCheckBox::stateChanged,
            this,
            &GeneneralConf::showTrayIconChanged);
#endif
}

void GeneneralConf::initConfingButtons()
{
    QHBoxLayout* buttonLayout = new QHBoxLayout();
    m_layout->addStretch();
    QGroupBox* box = new QGroupBox(tr("Configuration File"));
    box->setFlat(true);
    box->setLayout(buttonLayout);
    m_layout->addWidget(box);

    m_exportButton = new QPushButton(tr("Export"));
    buttonLayout->addWidget(m_exportButton);
    connect(m_exportButton,
            &QPushButton::clicked,
            this,
            &GeneneralConf::exportFileConfiguration);

    m_importButton = new QPushButton(tr("Import"));
    buttonLayout->addWidget(m_importButton);
    connect(m_importButton,
            &QPushButton::clicked,
            this,
            &GeneneralConf::importConfiguration);

    m_resetButton = new QPushButton(tr("Reset"));
    buttonLayout->addWidget(m_resetButton);
    connect(m_resetButton,
            &QPushButton::clicked,
            this,
            &GeneneralConf::resetConfiguration);
}

void GeneneralConf::initAutostart()
{
    m_autostart = new QCheckBox(tr("Launch at startup"), this);
    ConfigHandler config;
    bool checked = config.startupLaunchValue();
    m_autostart->setChecked(checked);
    m_autostart->setToolTip(tr("Launch Flameshot"));
    m_layout->addWidget(m_autostart);

    connect(
      m_autostart, &QCheckBox::clicked, this, &GeneneralConf::autostartChanged);
}

void GeneneralConf::initShowStartupLaunchMessage()
{
    m_showStartupLaunchMessage =
      new QCheckBox(tr("Show welcome message on launch"), this);
    ConfigHandler config;
    bool checked = config.showStartupLaunchMessage();
    m_showStartupLaunchMessage->setChecked(checked);
    m_showStartupLaunchMessage->setToolTip(tr("Launch Flameshot"));
    m_layout->addWidget(m_showStartupLaunchMessage);

    connect(m_showStartupLaunchMessage, &QCheckBox::clicked, [](bool checked) {
        ConfigHandler().setShowStartupLaunchMessage(checked);
    });
}

void GeneneralConf::initCloseAfterCapture()
{
    m_closeAfterCapture =
      new QCheckBox(tr("Close application after capture"), this);
    ConfigHandler config;
    bool checked = config.closeAfterScreenshotValue();
    m_closeAfterCapture->setChecked(checked);
    m_closeAfterCapture->setToolTip(tr("Close after taking a screenshot"));
    m_layout->addWidget(m_closeAfterCapture);

    connect(m_closeAfterCapture,
            &QCheckBox::clicked,
            this,
            &GeneneralConf::closeAfterCaptureChanged);
}

void GeneneralConf::initCopyAndCloseAfterUpload()
{
    m_copyAndCloseAfterUpload =
      new QCheckBox(tr("Copy URL after upload"), this);
    ConfigHandler config;
    m_copyAndCloseAfterUpload->setChecked(
      config.copyAndCloseAfterUploadEnabled());
    m_copyAndCloseAfterUpload->setToolTip(
      tr("Copy URL and close window after upload"));
    m_layout->addWidget(m_copyAndCloseAfterUpload);

    connect(m_copyAndCloseAfterUpload, &QCheckBox::clicked, [](bool checked) {
        ConfigHandler().setCopyAndCloseAfterUploadEnabled(checked);
    });
}

void GeneneralConf::initSaveAfterCopy()
{
    m_saveAfterCopy = new QCheckBox(tr("Save image after copy"), this);
    m_saveAfterCopy->setToolTip(tr("Save image file after copying it"));
    m_layout->addWidget(m_saveAfterCopy);
    connect(m_saveAfterCopy,
            &QCheckBox::clicked,
            this,
            &GeneneralConf::saveAfterCopyChanged);

    QHBoxLayout* pathLayout = new QHBoxLayout();
    m_layout->addStretch();
    QGroupBox* box = new QGroupBox(tr("Save Path"));
    box->setFlat(true);
    box->setLayout(pathLayout);
    m_layout->addWidget(box);

    m_savePath = new QLineEdit(
      QStandardPaths::writableLocation(QStandardPaths::PicturesLocation), this);
    m_savePath->setDisabled(true);
    QString foreground = this->palette().foreground().color().name();
    m_savePath->setStyleSheet(QStringLiteral("color: %1").arg(foreground));
    pathLayout->addWidget(m_savePath);

    m_changeSaveButton = new QPushButton(tr("Change..."), this);
    pathLayout->addWidget(m_changeSaveButton);
    connect(m_changeSaveButton,
            &QPushButton::clicked,
            this,
            &GeneneralConf::changeSavePath);
}

void GeneneralConf::saveAfterCopyChanged(bool checked)
{
    ConfigHandler().setSaveAfterCopy(checked);
}

void GeneneralConf::changeSavePath()
{
    QString path = QFileDialog::getExistingDirectory(
      this,
      tr("Choose a Folder"),
      QStandardPaths::writableLocation(QStandardPaths::PicturesLocation),
      QFileDialog::ShowDirsOnly | QFileDialog::DontResolveSymlinks);
    if (path.isEmpty()) {
        return;
    }
    if (!QFileInfo(path).isWritable()) {
        QMessageBox::about(
          this, tr("Error"), tr("Unable to write to directory."));
        return;
    }
    m_savePath->setText(path);
    ConfigHandler().setSaveAfterCopyPath(path);
}

void GeneneralConf::initCopyPathAfterSave()
{
    m_copyPathAfterSave = new QCheckBox(tr("Copy file path after save"), this);
    ConfigHandler config;
    m_copyPathAfterSave->setChecked(config.copyPathAfterSaveEnabled());
    m_copyPathAfterSave->setToolTip(tr("Copy file path after save"));
    m_layout->addWidget(m_copyPathAfterSave);
    connect(m_copyPathAfterSave, &QCheckBox::clicked, [](bool checked) {
        ConfigHandler().setCopyPathAfterSaveEnabled(checked);
    });
}

void GeneneralConf::initUploadStorage()
{
    QGroupBox* groupBox = new QGroupBox(tr("Upload storage"));

    // TODO - remove dependency injection (s3 & imgur)
    // imgur
    QRadioButton* storageImgUr = new QRadioButton(tr("Imgur storage"));
    connect(storageImgUr, &QCheckBox::clicked, [](bool checked) {
        ConfigHandler().setUploadStorage(SCREENSHOT_STORAGE_TYPE_IMGUR);
    });

    // s3
    QRadioButton* storageImgS3 = new QRadioButton(
      tr("S3 storage (require config.ini file with s3 credentials)"));
    connect(storageImgS3, &QCheckBox::clicked, [](bool checked) {
        ConfigHandler().setUploadStorage(SCREENSHOT_STORAGE_TYPE_S3);
    });

    // set current storage radiobutton active
    if (ConfigHandler().uploadStorage() == SCREENSHOT_STORAGE_TYPE_IMGUR) {
        storageImgUr->setChecked(true);

    } else {
        storageImgS3->setChecked(true);
    }

    // draw configuration options for uploadStorage
    QVBoxLayout* vbox = new QVBoxLayout;
    vbox->addWidget(storageImgUr);
    vbox->addWidget(storageImgS3);
    vbox->addStretch(1);
    groupBox->setLayout(vbox);
    m_layout->addWidget(groupBox);
}

void GeneneralConf::initFilePathConfiguration()
{
    m_filePathConfiguration = new FilePathConfiguration();
    m_layout->addWidget(m_filePathConfiguration);
}