// For license of this file, see <project-root-folder>/LICENSE.md.

#include "gui/settings/settingsfeedsmessages.h"

#include "core/feedsmodel.h"
#include "definitions/globals.h"
#include "gui/dialogs/formmain.h"
#include "gui/feedmessageviewer.h"
#include "gui/reusable/timespinbox.h"
#include "miscellaneous/application.h"
#include "miscellaneous/feedreader.h"
#include "miscellaneous/settings.h"
#include "miscellaneous/textfactory.h"

#include <QFontDialog>
#include <QLocale>
#include <QStringList>

SettingsFeedsMessages::SettingsFeedsMessages(Settings* settings, QWidget* parent)
  : SettingsPanel(settings, parent), m_ui(nullptr) {}

SettingsFeedsMessages::~SettingsFeedsMessages() {
  if (m_ui != nullptr) {
    delete m_ui;
  }
}

void SettingsFeedsMessages::loadUi() {
  m_ui = new Ui::SettingsFeedsMessages();
  m_ui->setupUi(this);

  m_ui->m_cmbCountsAlignment->addItem(tr("Left"), int(Qt::AlignmentFlag::AlignLeft));
  m_ui->m_cmbCountsAlignment->addItem(tr("Center"), int(Qt::AlignmentFlag::AlignCenter));
  m_ui->m_cmbCountsAlignment->addItem(tr("Right"), int(Qt::AlignmentFlag::AlignRight));

  m_ui->m_spinAutoUpdateInterval->setMode(TimeSpinBox::Mode::MinutesSeconds);
  m_ui->m_spinStartupUpdateDelay->setMode(TimeSpinBox::Mode::MinutesSeconds);

  m_ui->m_wdgArticleLimiting->setForAppWideFeatures(true, false);

  initializeMessageDateFormats();

  m_ui->m_helpArticlesLazyLoading
    ->setHelpText(tr("If enabled then %1 loads articles into article list on demand as you scroll throught the "
                     "list.\n\n"
                     "This can tremendously speed up the application if you have hundreds of thousands articles, but "
                     "it can hinder your article list filtering because not all articles are loaded, thus your "
                     "filtering could be off.")
                    .arg(QSL(APP_NAME)),
                  true);
  m_ui->m_helpCountsFeedsFormat
    ->setHelpText(tr("Enter format for count of articles displayed next to each "
                     "feed/folder in feed list. Use \"%all\" and \"%unread\" strings "
                     "which are placeholders for the actual count of all (or unread) articles."),
                  false);
  m_ui->m_helpMultilineArticleList->setHelpText(tr("Note that enabling this might have drastic consequences on "
                                                   "performance of article list with big number of articles."),
                                                true);

  auto unread_icons = enumToStrings<MessagesModel::MessageUnreadIcon>();

  for (const auto& unread_icon : unread_icons) {
    m_ui->m_cmbUnreadIconType->addItem(MessagesModel::descriptionOfUnreadIcon(unread_icon.first),
                                       int(unread_icon.first));
  }

  m_ui->m_cmbArticleMarkingPolicy->addItem(tr("immediately"), int(MessagesView::ArticleMarkingPolicy::MarkImmediately));
  m_ui->m_cmbArticleMarkingPolicy->addItem(tr("only manually"),
                                           int(MessagesView::ArticleMarkingPolicy::MarkOnlyManually));
  m_ui->m_cmbArticleMarkingPolicy->addItem(tr("with delay"), int(MessagesView::ArticleMarkingPolicy::MarkWithDelay));

  updateArticleMarkingPolicyDelay();

  connect(m_ui->m_cmbArticleMarkingPolicy,
          QOverload<int>::of(&QComboBox::currentIndexChanged),
          this,
          &SettingsFeedsMessages::updateArticleMarkingPolicyDelay);

  connect(m_ui->m_cbShowEnclosuresDirectly, &QCheckBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_spinHeightImageAttachments,
          QOverload<int>::of(&QSpinBox::valueChanged),
          this,
          &SettingsFeedsMessages::dirtifySettings);

  connect(m_ui->m_checkShowFeedIconInFeedColumn, &QCheckBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_checkShowFeedIconInFeedColumn, &QCheckBox::toggled, this, &SettingsFeedsMessages::requireRestart);

  connect(m_ui->m_spinRelativeArticleTime, QOverload<int>::of(&QSpinBox::valueChanged), this, [=](int value) {
    if (value <= 0) {
      m_ui->m_spinRelativeArticleTime->setSuffix(QSL(" ") + tr("days (turned off)"));
    }
    else {
      m_ui->m_spinRelativeArticleTime->setSuffix(QSL(" ") + tr("day(s)", nullptr, value));
    }
  });

  connect(m_ui->m_spinHeightImageAttachments, QOverload<int>::of(&QSpinBox::valueChanged), this, [=](int value) {
    if (value <= 0) {
      m_ui->m_spinHeightImageAttachments->setSuffix(QSL(" px") + tr(" = unchanged size"));
    }
    else {
      m_ui->m_spinHeightImageAttachments->setSuffix(QSL(" px"));
    }
  });

  connect(m_ui->m_cmbArticleMarkingPolicy,
          QOverload<int>::of(&QComboBox::currentIndexChanged),
          this,
          &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_cmbCountsAlignment,
          QOverload<int>::of(&QComboBox::currentIndexChanged),
          this,
          &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_spinArticleMarkingPolicy,
          QOverload<int>::of(&QSpinBox::valueChanged),
          this,
          &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_gbFeedListFont, &QGroupBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_gbArticleListFont, &QGroupBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_cbListsRestrictedShortcuts, &QCheckBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_cmbIgnoreContentsChanges, &QCheckBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_cbHideCountsIfNoUnread, &QCheckBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_cbAlwaysShowCountsLabelImportant, &QCheckBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_checkAutoUpdate, &QCheckBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_checkSwitchArticleListRtl, &QCheckBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_cbUpdateFeedListDuringFetching, &QCheckBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_checkAutoUpdateOnlyUnfocused, &QCheckBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_cmbUnreadIconType,
          QOverload<int>::of(&QComboBox::currentIndexChanged),
          this,
          &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_cmbUnreadIconType,
          QOverload<int>::of(&QComboBox::currentIndexChanged),
          this,
          &SettingsFeedsMessages::requireRestart);

  connect(m_ui->m_checkMarkReadAfterOpenExtInt, &QCheckBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_checkKeppMessagesInTheMiddle, &QCheckBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_cbArticleViewerAlwaysVisible, &QCheckBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_checkMessagesDateTimeFormat, &QCheckBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_checkMessagesDateTimeFormat,
          &QCheckBox::toggled,
          m_ui->m_cmbMessagesDateTimeFormat,
          &QComboBox::setEnabled);

  connect(m_ui->m_cmbFastAutoUpdate, &QCheckBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);

  connect(m_ui->m_checkMessagesTimeFormat, &QCheckBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_checkMessagesTimeFormat, &QCheckBox::toggled, m_ui->m_cmbMessagesTimeFormat, &QComboBox::setEnabled);

  connect(m_ui->m_checkMessagesDateTimeFormatForDatesOnly,
          &QCheckBox::toggled,
          this,
          &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_checkMessagesDateTimeFormatForDatesOnly,
          &QCheckBox::toggled,
          m_ui->m_cmbMessagesDateTimeFormatForDatesOnly,
          &QComboBox::setEnabled);

  connect(m_ui->m_checkRemoveReadMessagesOnExit, &QCheckBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_checkBringToForegroundAfterMsgOpened,
          &QCheckBox::toggled,
          this,
          &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_checkUpdateAllFeedsOnStartup, &QCheckBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_spinAutoUpdateInterval,
          static_cast<void (QDoubleSpinBox::*)(double)>(&QDoubleSpinBox::valueChanged),
          this,
          &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_spinStartupUpdateDelay,
          static_cast<void (QDoubleSpinBox::*)(double)>(&QDoubleSpinBox::valueChanged),
          this,
          &SettingsFeedsMessages::dirtifySettings);

  connect(m_ui->m_spinHeightRowsMessages,
          QOverload<int>::of(&QSpinBox::valueChanged),
          this,
          &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_spinHeightRowsMessages,
          QOverload<int>::of(&QSpinBox::valueChanged),
          this,
          &SettingsFeedsMessages::requireRestart);

  connect(m_ui->m_spinHeightRowsFeeds,
          QOverload<int>::of(&QSpinBox::valueChanged),
          this,
          &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_spinHeightRowsFeeds,
          QOverload<int>::of(&QSpinBox::valueChanged),
          this,
          &SettingsFeedsMessages::requireRestart);

  connect(m_ui->m_spinPaddingRowsMessages,
          QOverload<int>::of(&QSpinBox::valueChanged),
          this,
          &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_spinPaddingRowsMessages,
          QOverload<int>::of(&QSpinBox::valueChanged),
          this,
          &SettingsFeedsMessages::requireRestart);

  connect(m_ui->m_spinRelativeArticleTime,
          QOverload<int>::of(&QSpinBox::valueChanged),
          this,
          &SettingsFeedsMessages::dirtifySettings);

  connect(m_ui->m_checkAutoUpdate, &QCheckBox::toggled, m_ui->m_spinAutoUpdateInterval, &TimeSpinBox::setEnabled);
  connect(m_ui->m_checkUpdateAllFeedsOnStartup,
          &QCheckBox::toggled,
          m_ui->m_spinStartupUpdateDelay,
          &TimeSpinBox::setEnabled);
  connect(m_ui->m_spinFeedUpdateTimeout,
          QOverload<int>::of(&QSpinBox::valueChanged),
          this,
          &SettingsFeedsMessages::dirtifySettings);

  connect(m_ui->m_cmbMessagesDateTimeFormat,
          &QComboBox::currentTextChanged,
          this,
          &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_cbUnreadWhenUpdated, &QCheckBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_checkArticleListLazyLoading, &QCheckBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_cmbMessagesTimeFormat, &QComboBox::currentTextChanged, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_cmbMessagesDateTimeFormatForDatesOnly,
          &QComboBox::currentTextChanged,
          this,
          &SettingsFeedsMessages::dirtifySettings);

  connect(m_ui->m_cbFixupArticleDatetime, &QCheckBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);

  connect(m_ui->m_cmbCountsFeedList, &QComboBox::currentTextChanged, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_cmbCountsFeedList,
          static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged),
          this,
          &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_checkShowTooltips, &QCheckBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_cbStrikethroughDisabledFeeds, &QCheckBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_checkMultilineArticleList, &QCheckBox::toggled, this, &SettingsFeedsMessages::dirtifySettings);
  connect(m_ui->m_checkMultilineArticleList, &QCheckBox::toggled, this, &SettingsFeedsMessages::requireRestart);

  connect(m_ui->m_cmbMessagesDateTimeFormat,
          &QComboBox::currentTextChanged,
          this,
          &SettingsFeedsMessages::updateDateTimeTooltip);
  connect(m_ui->m_cmbMessagesTimeFormat,
          &QComboBox::currentTextChanged,
          this,
          &SettingsFeedsMessages::updateDateTimeTooltip);

  emit m_ui->m_cmbMessagesDateTimeFormat->currentTextChanged({});
  emit m_ui->m_cmbMessagesTimeFormat->currentTextChanged({});
  emit m_ui->m_cmbMessagesDateTimeFormatForDatesOnly->currentTextChanged({});

  connect(m_ui->m_btnChangeMessagesFont, &QPushButton::clicked, this, [&]() {
    changeFont(*m_ui->m_lblMessagesFont);
  });

  connect(m_ui->m_btnChangeFeedListFont, &QPushButton::clicked, this, [&]() {
    changeFont(*m_ui->m_lblFeedListFont);
  });

  connect(m_ui->m_btnChangeMessageListFont, &QPushButton::clicked, this, [&]() {
    changeFont(*m_ui->m_lblMessageListFont);
  });

  if (!m_ui->m_spinFeedUpdateTimeout->suffix().startsWith(' ')) {
    m_ui->m_spinFeedUpdateTimeout->setSuffix(QSL(" ") + m_ui->m_spinFeedUpdateTimeout->suffix());
  }

  connect(m_ui->m_wdgArticleLimiting, &ArticleAmountControl::changed, this, &SettingsFeedsMessages::dirtifySettings);

  m_ui->m_spinRelativeArticleTime->setValue(-1);

  SettingsPanel::loadUi();
}

QIcon SettingsFeedsMessages::icon() const {
  return qApp->icons()->fromTheme(QSL("mail-mark-read"));
}

void SettingsFeedsMessages::initializeMessageDateFormats() {
  QStringList patterns = TextFactory::dateTimePatterns(false);

  m_ui->m_cmbMessagesDateTimeFormat->addItems(patterns);
  m_ui->m_cmbMessagesTimeFormat->addItems(patterns);
  m_ui->m_cmbMessagesDateTimeFormatForDatesOnly->addItems(patterns);

  for (int i = 0; i < patterns.size(); i++) {
    m_ui->m_cmbMessagesDateTimeFormat->setItemData(i,
                                                   QDateTime::currentDateTime().toString(patterns.at(i)),
                                                   Qt::ItemDataRole::ToolTipRole);
    m_ui->m_cmbMessagesTimeFormat->setItemData(i,
                                               QDateTime::currentDateTime().toString(patterns.at(i)),
                                               Qt::ItemDataRole::ToolTipRole);
    m_ui->m_cmbMessagesDateTimeFormatForDatesOnly->setItemData(i,
                                                               QDateTime::currentDateTime().toString(patterns.at(i)),
                                                               Qt::ItemDataRole::ToolTipRole);
  }
}

void SettingsFeedsMessages::changeFont(QLabel& lbl) {
  bool ok;
  QFont new_font = QFontDialog::getFont(&ok,
                                        lbl.font(),
                                        this,
                                        tr("Select new font"),
                                        QFontDialog::FontDialogOption::DontUseNativeDialog);

  if (ok) {
    lbl.setFont(new_font);
    dirtifySettings();
  }
}

MessagesView::ArticleMarkingPolicy SettingsFeedsMessages::selectedArticleMarkingPolicy() const {
  return MessagesView::ArticleMarkingPolicy(m_ui->m_cmbArticleMarkingPolicy->currentData().toInt());
}

void SettingsFeedsMessages::loadSettings() {
  onBeginLoadSettings();

  m_ui->m_checkArticleListLazyLoading
    ->setChecked(settings()->value(GROUP(Messages), SETTING(Messages::ArticleListLazyLoading)).toBool());
  m_ui->m_cbUnreadWhenUpdated
    ->setChecked(settings()->value(GROUP(Messages), SETTING(Messages::MarkUnreadOnUpdated)).toBool());
  m_ui->m_cmbArticleMarkingPolicy
    ->setCurrentIndex(m_ui->m_cmbArticleMarkingPolicy->findData(settings()
                                                                  ->value(GROUP(Messages),
                                                                          SETTING(Messages::ArticleMarkOnSelection))
                                                                  .toInt()));
  m_ui->m_spinArticleMarkingPolicy
    ->setValue(settings()->value(GROUP(Messages), SETTING(Messages::ArticleMarkOnSelectionDelay)).toInt());

  m_ui->m_spinRelativeArticleTime
    ->setValue(settings()->value(GROUP(Messages), SETTING(Messages::RelativeTimeForNewerArticles)).toInt());
  m_ui->m_spinPaddingRowsMessages
    ->setValue(settings()->value(GROUP(Messages), SETTING(Messages::ArticleListPadding)).toInt());
  m_ui->m_spinHeightRowsMessages->setValue(settings()->value(GROUP(GUI), SETTING(GUI::HeightRowMessages)).toInt());
  m_ui->m_spinHeightRowsFeeds->setValue(settings()->value(GROUP(GUI), SETTING(GUI::HeightRowFeeds)).toInt());

  m_ui->m_cbUpdateFeedListDuringFetching
    ->setChecked(settings()->value(GROUP(Feeds), SETTING(Feeds::UpdateFeedListDuringFetching)).toBool());
  m_ui->m_cbListsRestrictedShortcuts
    ->setChecked(settings()->value(GROUP(Feeds), SETTING(Feeds::OnlyBasicShortcutsInLists)).toBool());

  m_ui->m_checkShowFeedIconInFeedColumn
    ->setChecked(settings()->value(GROUP(Messages), SETTING(Messages::ShowFeedIconInFeedColumn)).toBool());

  m_ui->m_checkMarkReadAfterOpenExtInt
    ->setChecked(settings()->value(GROUP(Messages), SETTING(Messages::MarkReadAfterOpenedExtInt)).toBool());

  m_ui->m_cbHideCountsIfNoUnread
    ->setChecked(settings()->value(GROUP(Feeds), SETTING(Feeds::HideCountsIfNoUnread)).toBool());
  m_ui->m_cbAlwaysShowCountsLabelImportant
    ->setChecked(settings()->value(GROUP(Feeds), SETTING(Feeds::AlwaysShowCountsLabelsImportant)).toBool());

  m_ui->m_cmbUnreadIconType
    ->setCurrentIndex(m_ui->m_cmbUnreadIconType
                        ->findData(settings()->value(GROUP(Messages), SETTING(Messages::UnreadIconType)).toInt()));
  m_ui->m_checkBringToForegroundAfterMsgOpened
    ->setChecked(settings()
                   ->value(GROUP(Messages), SETTING(Messages::BringAppToFrontAfterMessageOpenedExternally))
                   .toBool());
  m_ui->m_checkKeppMessagesInTheMiddle
    ->setChecked(settings()->value(GROUP(Messages), SETTING(Messages::KeepCursorInCenter)).toBool());
  m_ui->m_checkSwitchArticleListRtl
    ->setChecked(settings()->value(GROUP(Messages), SETTING(Messages::SwitchArticleListRtl)).toBool());
  m_ui->m_checkRemoveReadMessagesOnExit
    ->setChecked(settings()->value(GROUP(Messages), SETTING(Messages::ClearReadOnExit)).toBool());
  m_ui->m_checkAutoUpdate->setChecked(settings()->value(GROUP(Feeds), SETTING(Feeds::AutoUpdateEnabled)).toBool());
  m_ui->m_checkAutoUpdateOnlyUnfocused
    ->setChecked(settings()->value(GROUP(Feeds), SETTING(Feeds::AutoUpdateOnlyUnfocused)).toBool());
  m_ui->m_spinAutoUpdateInterval->setValue(settings()->value(GROUP(Feeds), SETTING(Feeds::AutoUpdateInterval)).toInt());
  m_ui->m_spinFeedUpdateTimeout->setValue(settings()->value(GROUP(Feeds), SETTING(Feeds::UpdateTimeout)).toInt());

  Feed::ArticleIgnoreLimit art_limit = Feed::ArticleIgnoreLimit::fromSettings();

  m_ui->m_wdgArticleLimiting->load(art_limit);

  m_ui->m_cmbFastAutoUpdate->setChecked(settings()->value(GROUP(Feeds), SETTING(Feeds::FastAutoUpdate)).toBool());
  m_ui->m_checkUpdateAllFeedsOnStartup
    ->setChecked(settings()->value(GROUP(Feeds), SETTING(Feeds::FeedsUpdateOnStartup)).toBool());
  m_ui->m_spinStartupUpdateDelay
    ->setValue(settings()->value(GROUP(Feeds), SETTING(Feeds::FeedsUpdateStartupDelay)).toDouble());
  m_ui->m_cmbCountsFeedList
    ->addItems({QSL("(%unread)"), QSL("[%unread]"), QSL("%unread/%all"), QSL("%unread-%all"), QSL("[%unread|%all]")});
  m_ui->m_cmbCountsFeedList->setEditText(settings()->value(GROUP(Feeds), SETTING(Feeds::CountFormat)).toString());
  m_ui->m_checkShowTooltips
    ->setChecked(settings()->value(GROUP(Feeds), SETTING(Feeds::EnableTooltipsFeedsMessages)).toBool());
  m_ui->m_cbStrikethroughDisabledFeeds
    ->setChecked(settings()->value(GROUP(Feeds), SETTING(Feeds::StrikethroughDisabledFeeds)).toBool());
  m_ui->m_cmbIgnoreContentsChanges
    ->setChecked(settings()->value(GROUP(Messages), SETTING(Messages::IgnoreContentsChanges)).toBool());
  m_ui->m_checkMultilineArticleList
    ->setChecked(settings()->value(GROUP(Messages), SETTING(Messages::MultilineArticleList)).toBool());

  m_ui->m_cbArticleViewerAlwaysVisible
    ->setChecked(settings()->value(GROUP(Messages), SETTING(Messages::AlwaysDisplayItemPreview)).toBool());
  m_ui->m_spinHeightImageAttachments
    ->setValue(settings()->value(GROUP(Messages), SETTING(Messages::LimitArticleImagesHeight)).toInt());
  m_ui->m_cbShowEnclosuresDirectly
    ->setChecked(settings()->value(GROUP(Messages), SETTING(Messages::DisplayEnclosuresInMessage)).toBool());

  m_ui->m_cmbCountsAlignment
    ->setCurrentIndex(m_ui->m_cmbCountsAlignment->findData(Qt::AlignmentFlag(qApp->settings()
                                                                               ->value(GROUP(Feeds),
                                                                                       SETTING(Feeds::CountAlignment))
                                                                               .toInt())));

  m_ui->m_cbFixupArticleDatetime
    ->setChecked(settings()->value(GROUP(Messages), SETTING(Messages::FixupFutureArticleDateTimes)).toBool());

  m_ui->m_checkMessagesDateTimeFormat
    ->setChecked(settings()->value(GROUP(Messages), SETTING(Messages::UseCustomDate)).toBool());
  m_ui->m_cmbMessagesDateTimeFormat
    ->setCurrentText(settings()->value(GROUP(Messages), SETTING(Messages::CustomDateFormat)).toString());

  m_ui->m_checkMessagesTimeFormat
    ->setChecked(settings()->value(GROUP(Messages), SETTING(Messages::UseCustomTime)).toBool());
  m_ui->m_cmbMessagesTimeFormat
    ->setCurrentText(settings()->value(GROUP(Messages), SETTING(Messages::CustomTimeFormat)).toString());

  m_ui->m_checkMessagesDateTimeFormatForDatesOnly
    ->setChecked(settings()->value(GROUP(Messages), SETTING(Messages::UseCustomFormatForDatesOnly)).toBool());
  m_ui->m_cmbMessagesDateTimeFormatForDatesOnly
    ->setCurrentText(settings()->value(GROUP(Messages), SETTING(Messages::CustomFormatForDatesOnly)).toString());

  QFont fon;

  fon.fromString(settings()->value(GROUP(Messages), SETTING(Messages::PreviewerFontStandard)).toString());
  m_ui->m_lblMessagesFont->setFont(fon);

  QFont fon2;

  // Keep in sync with void MessagesModel::setupFonts().
  fon2.fromString(settings()
                    ->value(GROUP(Messages), Messages::ListFont, Application::font("MessagesView").toString())
                    .toString());
  m_ui->m_lblMessageListFont->setFont(fon2);
  m_ui->m_gbArticleListFont
    ->setChecked(settings()->value(GROUP(Messages), SETTING(Messages::CustomizeListFont)).toBool());

  QFont fon3;

  // Keep in sync with void FeedsModel::setupFonts().
  fon3
    .fromString(settings()->value(GROUP(Feeds), Feeds::ListFont, Application::font("FeedsView").toString()).toString());
  m_ui->m_lblFeedListFont->setFont(fon3);
  m_ui->m_gbFeedListFont->setChecked(settings()->value(GROUP(Feeds), SETTING(Feeds::CustomizeListFont)).toBool());

  onEndLoadSettings();
}

void SettingsFeedsMessages::saveSettings() {
  onBeginSaveSettings();

  settings()->setValue(GROUP(Messages),
                       Messages::ArticleListLazyLoading,
                       m_ui->m_checkArticleListLazyLoading->isChecked());
  settings()->setValue(GROUP(Messages), Messages::MarkUnreadOnUpdated, m_ui->m_cbUnreadWhenUpdated->isChecked());
  settings()->setValue(GROUP(Messages),
                       Messages::ArticleMarkOnSelection,
                       m_ui->m_cmbArticleMarkingPolicy->currentData().toInt());

  qApp->settings()->setValue(GROUP(Feeds),
                             Feeds::CountAlignment,
                             Qt::AlignmentFlag(m_ui->m_cmbCountsAlignment->currentData().toInt()));

  settings()->setValue(GROUP(Messages),
                       Messages::ArticleMarkOnSelectionDelay,
                       m_ui->m_spinArticleMarkingPolicy->value());

  qApp->mainForm()->tabWidget()->feedMessageViewer()->messagesView()->setupArticleMarkingPolicy();

  settings()->setValue(GROUP(Messages),
                       Messages::RelativeTimeForNewerArticles,
                       m_ui->m_spinRelativeArticleTime->value());
  settings()->setValue(GROUP(Messages), Messages::ArticleListPadding, m_ui->m_spinPaddingRowsMessages->value());
  settings()->setValue(GROUP(GUI), GUI::HeightRowMessages, m_ui->m_spinHeightRowsMessages->value());
  settings()->setValue(GROUP(GUI), GUI::HeightRowFeeds, m_ui->m_spinHeightRowsFeeds->value());

  settings()->setValue(GROUP(Messages),
                       Messages::ShowFeedIconInFeedColumn,
                       m_ui->m_checkShowFeedIconInFeedColumn->isChecked());

  settings()->setValue(GROUP(Messages),
                       Messages::MarkReadAfterOpenedExtInt,
                       m_ui->m_checkMarkReadAfterOpenExtInt->isChecked());

  settings()->setValue(GROUP(Feeds),
                       Feeds::UpdateFeedListDuringFetching,
                       m_ui->m_cbUpdateFeedListDuringFetching->isChecked());
  settings()->setValue(GROUP(Feeds), Feeds::OnlyBasicShortcutsInLists, m_ui->m_cbListsRestrictedShortcuts->isChecked());

  settings()->setValue(GROUP(Feeds),
                       Feeds::AlwaysShowCountsLabelsImportant,
                       m_ui->m_cbAlwaysShowCountsLabelImportant->isChecked());
  settings()->setValue(GROUP(Feeds), Feeds::HideCountsIfNoUnread, m_ui->m_cbHideCountsIfNoUnread->isChecked());
  settings()->setValue(GROUP(Messages), Messages::UnreadIconType, m_ui->m_cmbUnreadIconType->currentData().toInt());

  // Make registry hack to make "show app window after external viewer called" feature
  // work more reliably on Windows 10+.
#if defined(Q_OS_WIN)
  if (!settings()->value(GROUP(Messages), SETTING(Messages::BringAppToFrontAfterMessageOpenedExternally)).toBool() &&
      m_ui->m_checkBringToForegroundAfterMsgOpened->isChecked()) {
    QSettings registry_key(QSL("HKEY_CURRENT_USER\\Control Panel\\Desktop"), QSettings::Format::NativeFormat);

    registry_key.setValue(QSL("ForegroundFlashCount"), 3);
    registry_key.setValue(QSL("ForegroundLockTimeout"), 0);

    requireRestart();
  }
#endif

  settings()->setValue(GROUP(Messages),
                       Messages::BringAppToFrontAfterMessageOpenedExternally,
                       m_ui->m_checkBringToForegroundAfterMsgOpened->isChecked());

  settings()->setValue(GROUP(Messages),
                       Messages::KeepCursorInCenter,
                       m_ui->m_checkKeppMessagesInTheMiddle->isChecked());
  settings()->setValue(GROUP(Messages), Messages::SwitchArticleListRtl, m_ui->m_checkSwitchArticleListRtl->isChecked());
  settings()->setValue(GROUP(Messages), Messages::ClearReadOnExit, m_ui->m_checkRemoveReadMessagesOnExit->isChecked());
  settings()->setValue(GROUP(Feeds), Feeds::AutoUpdateEnabled, m_ui->m_checkAutoUpdate->isChecked());
  settings()->setValue(GROUP(Feeds), Feeds::AutoUpdateOnlyUnfocused, m_ui->m_checkAutoUpdateOnlyUnfocused->isChecked());
  settings()->setValue(GROUP(Feeds), Feeds::AutoUpdateInterval, m_ui->m_spinAutoUpdateInterval->value());
  settings()->setValue(GROUP(Feeds), Feeds::UpdateTimeout, m_ui->m_spinFeedUpdateTimeout->value());

  Feed::ArticleIgnoreLimit art_limit = m_ui->m_wdgArticleLimiting->save();

  settings()->setValue(GROUP(Messages), Messages::AvoidOldArticles, art_limit.m_avoidOldArticles);
  settings()->setValue(GROUP(Messages), Messages::DateTimeToAvoidArticle, art_limit.m_dtToAvoid);
  settings()->setValue(GROUP(Messages), Messages::HoursToAvoidArticle, art_limit.m_hoursToAvoid);

  settings()->setValue(GROUP(Messages), Messages::LimitDoNotRemoveStarred, art_limit.m_doNotRemoveStarred);
  settings()->setValue(GROUP(Messages), Messages::LimitDoNotRemoveUnread, art_limit.m_doNotRemoveUnread);
  settings()->setValue(GROUP(Messages), Messages::LimitCountOfArticles, art_limit.m_keepCountOfArticles);
  settings()->setValue(GROUP(Messages), Messages::LimitRecycleInsteadOfPurging, art_limit.m_moveToBinDontPurge);

  settings()->setValue(GROUP(Feeds), Feeds::FastAutoUpdate, m_ui->m_cmbFastAutoUpdate->isChecked());
  settings()->setValue(GROUP(Feeds), Feeds::FeedsUpdateOnStartup, m_ui->m_checkUpdateAllFeedsOnStartup->isChecked());
  settings()->setValue(GROUP(Feeds), Feeds::FeedsUpdateStartupDelay, m_ui->m_spinStartupUpdateDelay->value());
  settings()->setValue(GROUP(Feeds), Feeds::CountFormat, m_ui->m_cmbCountsFeedList->currentText());
  settings()->setValue(GROUP(Feeds), Feeds::EnableTooltipsFeedsMessages, m_ui->m_checkShowTooltips->isChecked());
  settings()->setValue(GROUP(Feeds),
                       Feeds::StrikethroughDisabledFeeds,
                       m_ui->m_cbStrikethroughDisabledFeeds->isChecked());
  settings()->setValue(GROUP(Messages), Messages::IgnoreContentsChanges, m_ui->m_cmbIgnoreContentsChanges->isChecked());
  settings()->setValue(GROUP(Messages), Messages::MultilineArticleList, m_ui->m_checkMultilineArticleList->isChecked());
  settings()->setValue(GROUP(Messages),
                       Messages::LimitArticleImagesHeight,
                       m_ui->m_spinHeightImageAttachments->value());
  settings()->setValue(GROUP(Messages),
                       Messages::DisplayEnclosuresInMessage,
                       m_ui->m_cbShowEnclosuresDirectly->isChecked());

  settings()->setValue(GROUP(Messages),
                       Messages::FixupFutureArticleDateTimes,
                       m_ui->m_cbFixupArticleDatetime->isChecked());

  settings()->setValue(GROUP(Messages),
                       Messages::AlwaysDisplayItemPreview,
                       m_ui->m_cbArticleViewerAlwaysVisible->isChecked());

  settings()->setValue(GROUP(Messages), Messages::UseCustomDate, m_ui->m_checkMessagesDateTimeFormat->isChecked());
  settings()->setValue(GROUP(Messages), Messages::UseCustomTime, m_ui->m_checkMessagesTimeFormat->isChecked());

  settings()->setValue(GROUP(Messages), Messages::CustomDateFormat, m_ui->m_cmbMessagesDateTimeFormat->currentText());
  settings()->setValue(GROUP(Messages), Messages::CustomTimeFormat, m_ui->m_cmbMessagesTimeFormat->currentText());

  settings()->setValue(GROUP(Messages),
                       Messages::UseCustomFormatForDatesOnly,
                       m_ui->m_checkMessagesDateTimeFormatForDatesOnly->isChecked());
  settings()->setValue(GROUP(Messages),
                       Messages::CustomFormatForDatesOnly,
                       m_ui->m_cmbMessagesDateTimeFormatForDatesOnly->currentText());

  // Save fonts.
  settings()->setValue(GROUP(Messages), Messages::PreviewerFontStandard, m_ui->m_lblMessagesFont->font().toString());
  settings()->setValue(GROUP(Messages), Messages::ListFont, m_ui->m_lblMessageListFont->font().toString());
  settings()->setValue(GROUP(Feeds), Feeds::ListFont, m_ui->m_lblFeedListFont->font().toString());

  settings()->setValue(GROUP(Messages), Messages::CustomizeListFont, m_ui->m_gbArticleListFont->isChecked());
  settings()->setValue(GROUP(Feeds), Feeds::CustomizeListFont, m_ui->m_gbFeedListFont->isChecked());

  qApp->mainForm()->tabWidget()->feedMessageViewer()->updateArticleViewerSettings();
  qApp->mainForm()->tabWidget()->feedMessageViewer()->loadMessageViewerFonts();

  qApp->feedReader()->updateAutoUpdateStatus();
  qApp->feedReader()->feedsModel()->setupCountsAlignment();
  qApp->feedReader()->feedsModel()->setupBehaviorDuringFetching();
  qApp->feedReader()->feedsModel()->reloadWholeLayout();

  qApp->feedReader()->messagesModel()->reloadLazyLoading();
  qApp->feedReader()->messagesModel()->updateDateFormat();
  qApp->feedReader()->messagesModel()->reloadWholeLayout();

  onEndSaveSettings();
}

void SettingsFeedsMessages::updateDateTimeTooltip() {
  QComboBox* sndr = qobject_cast<QComboBox*>(sender());

  if (sndr != nullptr) {
    if (sndr->currentText().simplified().isEmpty()) {
      sndr->setToolTip({});
    }
    else {
      sndr->setToolTip(QDateTime::currentDateTime().toString(sndr->currentText()));
    }
  }
}

void SettingsFeedsMessages::updateArticleMarkingPolicyDelay() {
  m_ui->m_spinArticleMarkingPolicy->setEnabled(selectedArticleMarkingPolicy() ==
                                               MessagesView::ArticleMarkingPolicy::MarkWithDelay);
}
