const kZKSActions = {
  // Note: If they start with "command:", it means that "command=" will be added to the key element,
  // otherwise "oncommand=" will be added.

  // Split view actions
  zenSplitViewGrid: ["gZenViewSplitter.toggleShortcut('grid')", 'zen-split-view-grid', 'split-view-action'],
  zenSplitViewVertical: ["gZenViewSplitter.toggleShortcut('vsep')", 'zen-split-view-vertical', 'split-view-action'],
  zenSplitViewHorizontal: ["gZenViewSplitter.toggleShortcut('hsep')", 'zen-split-view-horizontal', 'split-view-action'],
  zenSplitViewClose: ["gZenViewSplitter.toggleShortcut('unsplit')", 'zen-split-view-close', 'split-view-action'],

  // Workspace actions
  zenChangeWorkspace: ['ZenWorkspaces.changeWorkspaceShortcut()', 'zen-change-workspace', 'workspace-action'],
  zenChangeWorkspaceBack: ['ZenWorkspaces.changeWorkspaceShortcut(-1)', 'zen-change-workspace-back', 'workspace-action'],

  // manage actions
  openNewTab: ['command:cmd_newNavigatorTabNoEvent', 'open-new-tab', 'tab-action'],
  duplicateTab: ["duplicateTabIn(gBrowser.selectedTab, 'tab')", 'duplicate-tab', 'tab-action'],
  closeTab: ['command:cmd_close', 'close-tab', 'tab-action'],
  openNewWindow: ['command:cmd_newNavigator', 'open-new-window', 'tab-action'],
  openNewPrivateWindow: ['command:Tools:PrivateBrowsing', 'open-new-private-window', 'tab-action'],
  closeWindow: ['command:cmd_closeWindow', 'close-window', 'tab-action'],
  restoreLastTab: ['undoCloseTab()', 'restore-last-session', 'tab-action'],
  restoreLastWindow: ['command:History:UndoCloseWindow', 'restore-last-window', 'tab-action'],
  showNextTab: ['gBrowser.tabContainer.advanceSelectedTab(1, true)', 'show-next-tab', 'tab-action'],
  showPreviousTab: ['gBrowser.tabContainer.advanceSelectedTab(-1, true)', 'show-previous-tab', 'tab-action'],
  showAllTabsPanel: ['gTabsPanel.showAllTabsPanel()', 'show-all-tabs-panel', 'tab-action'],

  // Compact mode actions
  zenToggleCompactMode: ['gZenCompactModeManager.toggle()', 'zen-toggle-compact-mode', 'compact-mode-action'],
  zenToggleCompactModeSidebar: [
    'gZenCompactModeManager.toggleSidebar()',
    'zen-toggle-compact-mode-sidebar',
    'compact-mode-action',
  ],
  zenToggleCompactModeToolbar: [
    'gZenCompactModeManager.toggleToolbar()',
    'zen-toggle-compact-mode-toolbar',
    'compact-mode-action',
  ],

  // Page actions
  sendWithMail: ['command:Browser:SendLink', 'send-with-mail', 'page-action'],
  savePage: ['command:Browser:SavePage', 'save-page', 'page-action'],
  printPage: ['command:cmd_print', 'print-page', 'page-action'],
  muteCurrentTab: ['command:cmd_toggleMute', 'mute-current-tab', 'page-action'],
  showSourceOfPage: ['command:View:PageSource', 'show-source-of-page', 'page-action'],
  showPageInfo: ['command:View:PageInfo', 'show-page-info', 'page-action'],

  // Visible actions
  zoomIn: ['command:cmd_fullZoomEnlarge', 'zoom-in', 'visible-action'],
  zoomOut: ['command:cmd_fullZoomReduce', 'zoom-out', 'visible-action'],
  resetZoom: ['command:cmd_fullZoomReset', 'reset-zoom', 'visible-action'],

  // History actions
  back: ['command:Browser:Back', 'back', 'history-action'],
  forward: ['command:Browser:Forward', 'forward', 'history-action'],
  stop: ['command:Browser:Stop', 'stop', 'history-action'],
  reload: ['command:Browser:Reload', 'reload', 'history-action'],
  forceReload: ['command:Browser:ReloadSkipCache', 'force-reload', 'history-action'],

  // search actions
  searchInThisPage: ["gLazyFindCommand('onFindCommand')", 'search-in-this-page', 'search-action'],
  showNextSearchResult: ["gLazyFindCommand('onFindAgainCommand', false)", 'show-next-search-result', 'search-action'],
  showPreviousSearchResult: ["gLazyFindCommand('onFindAgainCommand', true)", 'show-previous-search-result', 'search-action'],
  searchTheWeb: ['command:Tools:Search', 'search-the-web', 'search-action'],

  // Tools actions
  openMigrationWizard: ['command:cmd_file_importFromAnotherBrowser', 'open-migration-wizard', 'tools-action'],
  quitFromApplication: ['command:goQuitApplication', 'quit-from-application', 'tools-action'],
  enterIntoCustomizeMode: ['gCustomizeMode.enter()', 'enter-into-customize-mode', 'tools-action'],
  enterIntoOfflineMode: ['command:cmd_toggleOfflineStatus', 'enter-into-offline-mode', 'tools-action'],
  openScreenCapture: ['command:Browser:Screenshot', 'open-screen-capture', 'tools-action'],

  // Bookmark actions
  bookmarkThisPage: [
    "BrowserPageActions.doCommandForAction(PageActions.actionForID('bookmark'), event, this);",
    'bookmark-this-page',
    'bookmark-action',
  ],
  openBookmarkAddTool: [
    'PlacesUIUtils.showBookmarkPagesDialog(PlacesCommandHook.uniqueCurrentPages)',
    'open-bookmark-add-tool',
    'bookmark-action',
  ],
  openBookmarksManager: ["SidebarController.toggle('viewBookmarksSidebar');", 'open-bookmarks-manager', 'bookmark-action'],
  toggleBookmarkToolbar: [
    "BookmarkingUI.toggleBookmarksToolbar('bookmark-tools')",
    'toggle-bookmark-toolbar',
    'bookmark-action',
  ],

  // Open Page actions
  openGeneralPreferences: ['openPreferences()', 'open-general-preferences', 'open-page-action'],
  openPrivacyPreferences: ["openPreferences('panePrivacy')", 'open-privacy-preferences', 'open-page-action'],
  openWorkspacesPreferences: ["openPreferences('paneWorkspaces')", 'open-workspaces-preferences', 'open-page-action'],
  openContainersPreferences: ["openPreferences('paneContainers')", 'open-containers-preferences', 'open-page-action'],
  openSearchPreferences: ["openPreferences('paneSearch')", 'open-search-preferences', 'open-page-action'],
  openSyncPreferences: ["openPreferences('paneSync')", 'open-sync-preferences', 'open-page-action'],
  openTaskManager: ['command:View:AboutProcesses', 'open-task-manager', 'open-page-action'],
  openAddonsManager: ['command:Tools:Addons', 'open-addons-manager', 'open-page-action'],
  openHomePage: ['BrowserHome()', 'open-home-page', 'open-page-action'],

  // History actions
  forgetHistory: ['command:Tools:Sanitize', 'forget-history', 'history-action'],
  quickForgetHistory: ['PlacesUtils.history.clear(true)', 'quick-forget-history', 'history-action'],
  clearRecentHistory: ['command:cmd_closeWindow', 'clear-recent-history', 'history-action'],
  restoreLastSession: ['command:Browser:RestoreLastSession', 'restore-last-session', 'history-action'],
  searchHistory: ['command:History:SearchHistory', 'search-history', 'history-action'],
  manageHistory: ["PlacesCommandHook.showPlacesOrganizer('History')", 'manage-history', 'history-action'],

  // Downloads actions
  openDownloads: ['DownloadsPanel.showDownloadsHistory()', 'open-downloads', 'downloads-action'],

  // Sidebar actions
  showBookmarkSidebar: ["SidebarController.show('viewBookmarksSidebar')", 'show-bookmark-sidebar', 'sidebar-action'],
  showHistorySidebar: ["SidebarController.show('viewHistorySidebar')", 'show-history-sidebar', 'sidebar-action'],
  showSyncedTabsSidebar: ["SidebarController.show('viewTabsSidebar')", 'show-synced-tabs-sidebar', 'sidebar-action'],
  reverseSidebarPosition: ['SidebarController.reversePosition()', 'reverse-sidebar', 'sidebar-action'],
  hideSidebar: ['SidebarController.hide()', 'hide-sidebar', 'sidebar-action'],
  toggleSidebar: ['SidebarController.toggle()', 'toggle-sidebar', 'sidebar-action'],
  zenToggleWebPanels: ['gZenBrowserManagerSidebar.toggle()', 'zen-toggle-web-panels', 'sidebar-action'],
  zenExpandSidebar: ['gZenVerticalTabsManager.toggleExpand()', 'zen-expand-sidebar', 'sidebar-action'],
};

const kZenDefaultShortcuts = {
  // Split view actions
  zenSplitViewGrid: 'Ctrl+Alt+G',
  zenSplitViewVertical: 'Ctrl+Alt+V',
  zenSplitViewHorizontal: 'Ctrl+Alt+H',
  zenSplitViewClose: 'Ctrl+Alt+U',

  // Workspace actions
  zenChangeWorkspace: 'Ctrl+E',
  zenChangeWorkspaceBack: 'Ctrl+Shift+E',

  // Compact mode actions
  zenToggleCompactMode: 'Ctrl+Alt+C',
  zenToggleCompactModeSidebar: 'Ctrl+Alt+S',
  zenToggleCompactModeToolbar: 'Ctrl+Alt+T',

  // manage actions
  zenToggleWebPanels: 'Alt+P',
};

// Section: ZenKeyboardShortcuts

const kZKSStorageKey = 'zen.keyboard.shortcuts';
const kZKSKeyCodeMap = {
  F1: 'VK_F1',
  F2: 'VK_F2',
  F3: 'VK_F3',
  F4: 'VK_F4',
  F5: 'VK_F5',
  F6: 'VK_F6',
  F7: 'VK_F7',
  F8: 'VK_F8',
  F9: 'VK_F9',
  F10: 'VK_F10',
  F11: 'VK_F11',
  F12: 'VK_F12',
  TAB: 'VK_TAB',
  ENTER: 'VK_RETURN',
  ESCAPE: 'VK_ESCAPE',
  SPACE: 'VK_SPACE',
  ARROWLEFT: 'VK_LEFT',
  ARROWRIGHT: 'VK_RIGHT',
  ARROWUP: 'VK_UP',
  ARROWDOWN: 'VK_DOWN',
  DELETE: 'VK_DELETE',
  BACKSPACE: 'VK_BACK',
};

var gZenKeyboardShortcuts = {
  init() {
    if (!Services.prefs.getBoolPref('zen.keyboard.shortcuts.enabled')) {
      return;
    }
    this._initShortcuts();
  },

  get _savedShortcuts() {
    if (!this.__savedShortcuts) {
      try {
        const data = Services.prefs.getStringPref(kZKSStorageKey);
        if (data.length == 0) {
          this._startUpShortcuts();
          return this._savedShortcuts;
        }
        this.__savedShortcuts = JSON.parse(data);
      } catch (e) {
        console.error('Zen CKS: Error parsing saved shortcuts', e);
        this.__savedShortcuts = {};
      }
    }
    return this.__savedShortcuts;
  },

  _startUpShortcuts() {
    this.__savedShortcuts = {};
    this._addDefaultShortcuts();
    this._saveShortcuts();
  },

  _saveShortcuts() {
    Services.prefs.setStringPref(
      kZKSStorageKey,
      JSON.stringify(this._savedShortcuts),
    );
  },

  _parseDefaultShortcut(shortcut) {
    let ctrl = shortcut.includes('Ctrl+');
    let alt = shortcut.includes('Alt+');
    let shift = shortcut.includes('Shift+');
    let meta = shortcut.includes('Meta+');
    let key = shortcut.replace(/Ctrl\+|Alt\+|Shift\+|Meta\+/g, '');
    if (['Tab', 'Enter', 'Escape', 'Space', 'ArrowLeft', 'ArrowRight', 'ArrowUp', 'ArrowDown'].includes(key)) {
      return { ctrl, alt, shift, meta, key: undefined, keycode: key };
    }
    let isKeyCode = key.length > 1;
    return { ctrl, alt, shift, meta, key: isKeyCode ? undefined : key, keycode: isKeyCode ? key : undefined };
  },

  _addDefaultShortcuts() {
    for (let action in kZenDefaultShortcuts) {
      if (!this._savedShortcuts[action]) {
        this._savedShortcuts[action] = this._parseDefaultShortcut(
          kZenDefaultShortcuts[action],
        );
      }
    }
  },

  setShortcut(id, shortcut) {
    if (!shortcut) {
      delete this._savedShortcuts[id];
    } else if (this.isValidShortcut(shortcut)) {
      this._savedShortcuts[id] = shortcut;
    }
    this._saveShortcuts();
  },

  _initShortcuts() {
    if (window.location.href == 'chrome://browser/content/browser.xhtml') {
      console.info('Zen CKS: Initializing shortcuts');
      Services.prefs.addObserver(kZKSStorageKey, this._onShortcutChange.bind(this));
      Services.prefs.addObserver('zen.keyboard.shortcuts.disable-firefox', this._disableFirefoxShortcuts.bind(this));
      this._initSavedShortcuts();
      this._disableFirefoxShortcuts();
    }
  },

  _disableFirefoxShortcuts() {
    let disable = Services.prefs.getBoolPref('zen.keyboard.shortcuts.disable-firefox');
    if (!disable) {
      return;
    }
    window.SessionStore.promiseInitialized.then(() => {
      let keySet = document.getElementById('mainKeyset');
      if (!keySet) {
        throw new Error('Zen CKS: No main keyset found');
      }
      for (let child of keySet.children) {
        if (!child.id.startsWith('zen-key_')) {
          child.setAttribute('disabled', true);
        }
      }
      console.info('Remove already exist shortcut keys');
    });
  },

  _onShortcutChange() {
    console.info('Zen CKS: Shortcut changed');
    this.__savedShortcuts = null;
    this._initSavedShortcuts(true);
  },

  _getCommandAttribute(action) {
    if (action.startsWith('command:')) {
      return `command="${action.substring(8)}"`;
    }
    return `oncommand="${action}"`;
  },

  _createShortcutElement(_action) {
    let shortcut = this._savedShortcuts[_action];
    if (!shortcut) {
      return null;
    }

    const action = kZKSActions[_action][0];
    const keycode = shortcut.keycode?.toUpperCase();
    const key = shortcut.key?.toUpperCase();
    let modifiers = {
      accel: shortcut.ctrl,
      alt: shortcut.alt,
      shift: shortcut.shift,
      meta: shortcut.meta,
    };

    modifiers = Object.keys(modifiers)
      .filter((mod) => modifiers[mod])
      .join(',');

    if (keycode) {
      const key = kZKSKeyCodeMap[keycode] || keycode;
      return window.MozXULElement.parseXULToFragment(`
        <key 
          id="zen-key_${_action}"
          class="zen-keyboard-shortcut"
          keycode="${key}"
          ${this._getCommandAttribute(action)}
          modifiers="${modifiers}"/>
      `);
    }

    return window.MozXULElement.parseXULToFragment(`
      <key 
        id="zen-key_${_action}"
        class="zen-keyboard-shortcut"
        key="${gZenUIManager.createValidXULText(key)}" 
        ${this._getCommandAttribute(action)}
        modifiers="${modifiers}"/>
    `);
  },

  _initSavedShortcuts(fromUpdate = false) {
    let keySet = document.getElementById('mainKeyset');
    if (!keySet) {
      throw new Error('Zen CKS: No main keyset found');
    }

    for (let action in kZKSActions) {
      let id = `zen-key_${action}`;
      let existing = document.getElementById(id);
      if (existing) {
        existing.remove();
      }
      let shortcut = this._createShortcutElement(action);
      if (shortcut) {
        keySet.prepend(shortcut);
      }
    }

    this._fixMeinKeyset();
  },

  _fixMeinKeyset() {
    let keySet = document.getElementById('mainKeyset');
    if (!keySet) {
      throw new Error('Zen CKS: No main keyset found');
    }
    const parent = keySet.parentElement;
    // We need to re-append the main keyset to the document to make the shortcuts work
    keySet.remove();
    parent.prepend(keySet);
  },

  getShortcut(action) {
    return this._savedShortcuts[action];
  },

  isValidShortcut(shortcut) {
    return shortcut && (shortcut.key || shortcut.keycode);
  },

  shortCutToString(shortcut) {
    let str = '';
    if (shortcut.ctrl) {
      str += "Ctrl+";
    }
    if (shortcut.alt) {
      str += 'Alt+';
    }
    if (shortcut.shift) {
      str += 'Shift+';
    }
    if (shortcut.meta) {
      str += AppConstants.platform == "macosx" ? "Cmd+" : "Meta+";
    }
    if (shortcut.keycode) {
      str += shortcut.keycode;
    } else if (shortcut.key) {
      // It can be undefined if edited from the settings
      str += shortcut.key;
    }
    return str;
  },
};