/* - This Source Code Form is subject to the terms of the Mozilla Public
   - License, v. 2.0. If a copy of the MPL was not distributed with this file,
   - You can obtain one at http://mozilla.org/MPL/2.0/. */

// Import globals from the files imported by the .xul files.
/* import-globals-from main.js */
/* import-globals-from home.js */
/* import-globals-from search.js */
/* import-globals-from containers.js */
/* import-globals-from privacy.js */
/* import-globals-from sync.js */
/* import-globals-from experimental.js */
/* import-globals-from moreFromMozilla.js */
/* import-globals-from findInPage.js */
/* import-globals-from /browser/base/content/utilityOverlay.js */
/* import-globals-from /toolkit/content/preferencesBindings.js */

"use strict";

var { AppConstants } = ChromeUtils.importESModule(
  "resource://gre/modules/AppConstants.sys.mjs"
);

var { Downloads } = ChromeUtils.importESModule(
  "resource://gre/modules/Downloads.sys.mjs"
);
var { Integration } = ChromeUtils.importESModule(
  "resource://gre/modules/Integration.sys.mjs"
);
/* global DownloadIntegration */
Integration.downloads.defineESModuleGetter(
  this,
  "DownloadIntegration",
  "resource://gre/modules/DownloadIntegration.sys.mjs"
);

var { PrivateBrowsingUtils } = ChromeUtils.importESModule(
  "resource://gre/modules/PrivateBrowsingUtils.sys.mjs"
);

var { Weave } = ChromeUtils.import("resource://services-sync/main.js");

var { FxAccounts, getFxAccountsSingleton } = ChromeUtils.import(
  "resource://gre/modules/FxAccounts.jsm"
);
var fxAccounts = getFxAccountsSingleton();

XPCOMUtils.defineLazyServiceGetters(this, {
  gApplicationUpdateService: [
    "@mozilla.org/updates/update-service;1",
    "nsIApplicationUpdateService",
  ],

  listManager: [
    "@mozilla.org/url-classifier/listmanager;1",
    "nsIUrlListManager",
  ],
  gHandlerService: [
    "@mozilla.org/uriloader/handler-service;1",
    "nsIHandlerService",
  ],
  gMIMEService: ["@mozilla.org/mime;1", "nsIMIMEService"],
});

ChromeUtils.defineESModuleGetters(this, {
  BrowserUtils: "resource://gre/modules/BrowserUtils.sys.mjs",
  ContextualIdentityService:
    "resource://gre/modules/ContextualIdentityService.sys.mjs",
  FileUtils: "resource://gre/modules/FileUtils.sys.mjs",
  OSKeyStore: "resource://gre/modules/OSKeyStore.sys.mjs",
  PlacesUtils: "resource://gre/modules/PlacesUtils.sys.mjs",
  QuickSuggest: "resource:///modules/QuickSuggest.sys.mjs",
  ShortcutUtils: "resource://gre/modules/ShortcutUtils.sys.mjs",
  UpdateUtils: "resource://gre/modules/UpdateUtils.sys.mjs",
  UrlbarPrefs: "resource:///modules/UrlbarPrefs.sys.mjs",
  UrlbarProviderQuickActions:
    "resource:///modules/UrlbarProviderQuickActions.sys.mjs",
  UrlbarUtils: "resource:///modules/UrlbarUtils.sys.mjs",
});

XPCOMUtils.defineLazyModuleGetters(this, {
  AMTelemetry: "resource://gre/modules/AddonManager.jsm",
  DownloadUtils: "resource://gre/modules/DownloadUtils.jsm",
  ExtensionPreferencesManager:
    "resource://gre/modules/ExtensionPreferencesManager.jsm",
  ExtensionSettingsStore: "resource://gre/modules/ExtensionSettingsStore.jsm",
  FeatureGate: "resource://featuregates/FeatureGate.jsm",
  FirefoxRelay: "resource://gre/modules/FirefoxRelay.jsm",
  HomePage: "resource:///modules/HomePage.jsm",
  LangPackMatcher: "resource://gre/modules/LangPackMatcher.jsm",
  LoginHelper: "resource://gre/modules/LoginHelper.jsm",
  NimbusFeatures: "resource://nimbus/ExperimentAPI.jsm",
  SelectionChangedMenulist: "resource:///modules/SelectionChangedMenulist.jsm",
  SiteDataManager: "resource:///modules/SiteDataManager.jsm",
  TransientPrefs: "resource:///modules/TransientPrefs.jsm",
  UIState: "resource://services-sync/UIState.jsm",
});

XPCOMUtils.defineLazyGetter(this, "gSubDialog", function() {
  const { SubDialogManager } = ChromeUtils.importESModule(
    "resource://gre/modules/SubDialog.sys.mjs"
  );
  return new SubDialogManager({
    dialogStack: document.getElementById("dialogStack"),
    dialogTemplate: document.getElementById("dialogTemplate"),
    dialogOptions: {
      styleSheets: [
        "chrome://browser/skin/preferences/dialog.css",
        "chrome://browser/skin/preferences/preferences.css",
      ],
      resizeCallback: async ({ title, frame }) => {
        // Search within main document and highlight matched keyword.
        await gSearchResultsPane.searchWithinNode(
          title,
          gSearchResultsPane.query
        );

        // Search within sub-dialog document and highlight matched keyword.
        await gSearchResultsPane.searchWithinNode(
          frame.contentDocument.firstElementChild,
          gSearchResultsPane.query
        );

        // Creating tooltips for all the instances found
        for (let node of gSearchResultsPane.listSearchTooltips) {
          if (!node.tooltipNode) {
            gSearchResultsPane.createSearchTooltip(
              node,
              gSearchResultsPane.query
            );
          }
        }
      },
    },
  });
});

var gLastCategory = { category: undefined, subcategory: undefined };
const gXULDOMParser = new DOMParser();

var gCategoryInits = new Map();
function init_category_if_required(category) {
  let categoryInfo = gCategoryInits.get(category);
  if (!categoryInfo) {
    throw new Error(
      "Unknown in-content prefs category! Can't init " + category
    );
  }
  if (categoryInfo.inited) {
    return null;
  }
  return categoryInfo.init();
}

function register_module(categoryName, categoryObject) {
  gCategoryInits.set(categoryName, {
    inited: false,
    async init() {
      let startTime = performance.now();
      let template = document.getElementById("template-" + categoryName);
      if (template) {
        // Replace the template element with the nodes inside of it.
        let frag = template.content;
        await document.l10n.translateFragment(frag);

        // Actually insert them into the DOM.
        document.l10n.pauseObserving();
        template.replaceWith(frag);
        document.l10n.resumeObserving();

        // We need to queue an update again because the previous update might
        // have happened while we awaited on translateFragment.
        Preferences.queueUpdateOfAllElements();
      }

      categoryObject.init();
      this.inited = true;
      ChromeUtils.addProfilerMarker(
        "Preferences",
        { startTime },
        categoryName + " init"
      );
    },
  });
}

document.addEventListener("DOMContentLoaded", init_all, { once: true });

function init_all() {
  Preferences.forceEnableInstantApply();

  // Asks Preferences to queue an update of the attribute values of
  // the entire document.
  Preferences.queueUpdateOfAllElements();
  Services.telemetry.setEventRecordingEnabled("aboutpreferences", true);

  register_module("paneGeneral", gMainPane);
  register_module("paneHome", gHomePane);
  register_module("paneSearch", gSearchPane);
  register_module("panePrivacy", gPrivacyPane);
  register_module("paneContainers", gContainersPane);
  if (Services.prefs.getBoolPref("browser.preferences.experimental")) {
    // Set hidden based on previous load's hidden value.
    document.getElementById(
      "category-experimental"
    ).hidden = Services.prefs.getBoolPref(
      "browser.preferences.experimental.hidden",
      false
    );
    register_module("paneExperimental", gExperimentalPane);
  }

  NimbusFeatures.moreFromMozilla.recordExposureEvent({ once: true });
  if (NimbusFeatures.moreFromMozilla.getVariable("enabled")) {
    document.getElementById("category-more-from-mozilla").hidden = false;
    gMoreFromMozillaPane.option = NimbusFeatures.moreFromMozilla.getVariable(
      "template"
    );
    register_module("paneMoreFromMozilla", gMoreFromMozillaPane);
  }
  // The Sync category needs to be the last of the "real" categories
  // registered and inititalized since many tests wait for the
  // "sync-pane-loaded" observer notification before starting the test.
  if (Services.prefs.getBoolPref("identity.fxaccounts.enabled")) {
    document.getElementById("category-sync").hidden = false;
    register_module("paneSync", gSyncPane);
  }
  register_module("paneSearchResults", gSearchResultsPane);
  gSearchResultsPane.init();
  gMainPane.preInit();

  let categories = document.getElementById("categories");
  categories.addEventListener("select", event => gotoPref(event.target.value));

  document.documentElement.addEventListener("keydown", function(event) {
    if (event.keyCode == KeyEvent.DOM_VK_TAB) {
      categories.setAttribute("keyboard-navigation", "true");
    }
  });
  categories.addEventListener("mousedown", function() {
    this.removeAttribute("keyboard-navigation");
  });

  maybeDisplayPoliciesNotice();

  window.addEventListener("hashchange", onHashChange);

  document.getElementById("focusSearch1").addEventListener("command", () => {
    gSearchResultsPane.searchInput.focus();
  });

  gotoPref().then(() => {
    let helpButton = document.getElementById("helpButton");
    let helpUrl =
      Services.urlFormatter.formatURLPref("app.support.baseURL") +
      "preferences";
    helpButton.setAttribute("href", helpUrl);

    document.getElementById("addonsButton").addEventListener("click", e => {
      e.preventDefault();
      if (e.button >= 2) {
        // Ignore right clicks.
        return;
      }
      let mainWindow = window.browsingContext.topChromeWindow;
      mainWindow.BrowserOpenAddonsMgr();
      AMTelemetry.recordLinkEvent({
        object: "aboutPreferences",
        value: "about:addons",
      });
    });

    document.dispatchEvent(
      new CustomEvent("Initialized", {
        bubbles: true,
        cancelable: true,
      })
    );
  });
}

function telemetryBucketForCategory(category) {
  category = category.toLowerCase();
  switch (category) {
    case "containers":
    case "general":
    case "home":
    case "privacy":
    case "search":
    case "sync":
    case "searchresults":
      return category;
    default:
      return "unknown";
  }
}

function onHashChange() {
  gotoPref(null, "hash");
}

async function gotoPref(
  aCategory,
  aShowReason = aCategory ? "click" : "initial"
) {
  let categories = document.getElementById("categories");
  const kDefaultCategoryInternalName = "paneGeneral";
  const kDefaultCategory = "general";
  let hash = document.location.hash;
  let category = aCategory || hash.substr(1) || kDefaultCategoryInternalName;

  let breakIndex = category.indexOf("-");
  // Subcategories allow for selecting smaller sections of the preferences
  // until proper search support is enabled (bug 1353954).
  let subcategory = breakIndex != -1 && category.substring(breakIndex + 1);
  if (subcategory) {
    category = category.substring(0, breakIndex);
  }
  category = friendlyPrefCategoryNameToInternalName(category);
  if (category != "paneSearchResults") {
    gSearchResultsPane.query = null;
    gSearchResultsPane.searchInput.value = "";
    gSearchResultsPane.removeAllSearchIndicators(window, true);
  } else if (!gSearchResultsPane.searchInput.value) {
    // Something tried to send us to the search results pane without
    // a query string. Default to the General pane instead.
    category = kDefaultCategoryInternalName;
    document.location.hash = kDefaultCategory;
    gSearchResultsPane.query = null;
  }

  // Updating the hash (below) or changing the selected category
  // will re-enter gotoPref.
  if (gLastCategory.category == category && !subcategory) {
    return;
  }

  let item;
  if (category != "paneSearchResults") {
    // Hide second level headers in normal view
    for (let element of document.querySelectorAll(".search-header")) {
      element.hidden = true;
    }

    item = categories.querySelector(".category[value=" + category + "]");
    if (!item || item.hidden) {
      category = kDefaultCategoryInternalName;
      item = categories.querySelector(".category[value=" + category + "]");
    }
  }

  if (
    gLastCategory.category ||
    category != kDefaultCategoryInternalName ||
    subcategory
  ) {
    let friendlyName = internalPrefCategoryNameToFriendlyName(category);
    // Overwrite the hash, unless there is no hash and we're switching to the
    // default category, e.g. by using the 'back' button after navigating to
    // a different category.
    if (
      !(!document.location.hash && category == kDefaultCategoryInternalName)
    ) {
      document.location.hash = friendlyName;
    }
  }
  // Need to set the gLastCategory before setting categories.selectedItem since
  // the categories 'select' event will re-enter the gotoPref codepath.
  gLastCategory.category = category;
  gLastCategory.subcategory = subcategory;
  if (item) {
    categories.selectedItem = item;
  } else {
    categories.clearSelection();
  }
  window.history.replaceState(category, document.title);

  try {
    await init_category_if_required(category);
  } catch (ex) {
    console.error(
      new Error(
        "Error initializing preference category " + category + ": " + ex
      )
    );
    throw ex;
  }

  // Bail out of this goToPref if the category
  // or subcategory changed during async operation.
  if (
    gLastCategory.category !== category ||
    gLastCategory.subcategory !== subcategory
  ) {
    return;
  }

  search(category, "data-category");

  if (aShowReason != "initial") {
    document.querySelector(".main-content").scrollTop = 0;
  }

  spotlight(subcategory, category);

  // Record which category is shown
  Services.telemetry.recordEvent(
    "aboutpreferences",
    "show",
    aShowReason,
    category
  );
}

function search(aQuery, aAttribute) {
  let mainPrefPane = document.getElementById("mainPrefPane");
  let elements = mainPrefPane.children;
  for (let element of elements) {
    // If the "data-hidden-from-search" is "true", the
    // element will not get considered during search.
    if (
      element.getAttribute("data-hidden-from-search") != "true" ||
      element.getAttribute("data-subpanel") == "true"
    ) {
      let attributeValue = element.getAttribute(aAttribute);
      if (attributeValue == aQuery) {
        element.hidden = false;
      } else {
        element.hidden = true;
      }
    } else if (
      element.getAttribute("data-hidden-from-search") == "true" &&
      !element.hidden
    ) {
      element.hidden = true;
    }
    element.classList.remove("visually-hidden");
  }

  let keysets = mainPrefPane.getElementsByTagName("keyset");
  for (let element of keysets) {
    let attributeValue = element.getAttribute(aAttribute);
    if (attributeValue == aQuery) {
      element.removeAttribute("disabled");
    } else {
      element.setAttribute("disabled", true);
    }
  }
}

async function spotlight(subcategory, category) {
  let highlightedElements = document.querySelectorAll(".spotlight");
  if (highlightedElements.length) {
    for (let element of highlightedElements) {
      element.classList.remove("spotlight");
    }
  }
  if (subcategory) {
    scrollAndHighlight(subcategory, category);
  }
}

async function scrollAndHighlight(subcategory, category) {
  let element = document.querySelector(`[data-subcategory="${subcategory}"]`);
  if (!element) {
    return;
  }
  let header = getClosestDisplayedHeader(element);

  scrollContentTo(header);
  element.classList.add("spotlight");
}

/**
 * If there is no visible second level header it will return first level header,
 * otherwise return second level header.
 * @returns {Element} - The closest displayed header.
 */
function getClosestDisplayedHeader(element) {
  let header = element.closest("groupbox");
  let searchHeader = header.querySelector(".search-header");
  if (
    searchHeader &&
    searchHeader.hidden &&
    header.previousElementSibling.classList.contains("subcategory")
  ) {
    header = header.previousElementSibling;
  }
  return header;
}

function scrollContentTo(element) {
  const STICKY_CONTAINER_HEIGHT = document.querySelector(".sticky-container")
    .clientHeight;
  let mainContent = document.querySelector(".main-content");
  let top = element.getBoundingClientRect().top - STICKY_CONTAINER_HEIGHT;
  mainContent.scroll({
    top,
    behavior: "smooth",
  });
}

function friendlyPrefCategoryNameToInternalName(aName) {
  if (aName.startsWith("pane")) {
    return aName;
  }
  return "pane" + aName.substring(0, 1).toUpperCase() + aName.substr(1);
}

// This function is duplicated inside of utilityOverlay.js's openPreferences.
function internalPrefCategoryNameToFriendlyName(aName) {
  return (aName || "").replace(/^pane./, function(toReplace) {
    return toReplace[4].toLowerCase();
  });
}

// Put up a confirm dialog with "ok to restart", "revert without restarting"
// and "restart later" buttons and returns the index of the button chosen.
// We can choose not to display the "restart later", or "revert" buttons,
// altough the later still lets us revert by using the escape key.
//
// The constants are useful to interpret the return value of the function.
const CONFIRM_RESTART_PROMPT_RESTART_NOW = 0;
const CONFIRM_RESTART_PROMPT_CANCEL = 1;
const CONFIRM_RESTART_PROMPT_RESTART_LATER = 2;
async function confirmRestartPrompt(
  aRestartToEnable,
  aDefaultButtonIndex,
  aWantRevertAsCancelButton,
  aWantRestartLaterButton
) {
  let [
    msg,
    title,
    restartButtonText,
    noRestartButtonText,
    restartLaterButtonText,
  ] = await document.l10n.formatValues([
    {
      id: aRestartToEnable
        ? "feature-enable-requires-restart"
        : "feature-disable-requires-restart",
    },
    { id: "should-restart-title" },
    { id: "should-restart-ok" },
    { id: "cancel-no-restart-button" },
    { id: "restart-later" },
  ]);

  // Set up the first (index 0) button:
  let buttonFlags =
    Services.prompt.BUTTON_POS_0 * Services.prompt.BUTTON_TITLE_IS_STRING;

  // Set up the second (index 1) button:
  if (aWantRevertAsCancelButton) {
    buttonFlags +=
      Services.prompt.BUTTON_POS_1 * Services.prompt.BUTTON_TITLE_IS_STRING;
  } else {
    noRestartButtonText = null;
    buttonFlags +=
      Services.prompt.BUTTON_POS_1 * Services.prompt.BUTTON_TITLE_CANCEL;
  }

  // Set up the third (index 2) button:
  if (aWantRestartLaterButton) {
    buttonFlags +=
      Services.prompt.BUTTON_POS_2 * Services.prompt.BUTTON_TITLE_IS_STRING;
  } else {
    restartLaterButtonText = null;
  }

  switch (aDefaultButtonIndex) {
    case 0:
      buttonFlags += Services.prompt.BUTTON_POS_0_DEFAULT;
      break;
    case 1:
      buttonFlags += Services.prompt.BUTTON_POS_1_DEFAULT;
      break;
    case 2:
      buttonFlags += Services.prompt.BUTTON_POS_2_DEFAULT;
      break;
    default:
      break;
  }

  let buttonIndex = Services.prompt.confirmEx(
    window,
    title,
    msg,
    buttonFlags,
    restartButtonText,
    noRestartButtonText,
    restartLaterButtonText,
    null,
    {}
  );

  // If we have the second confirmation dialog for restart, see if the user
  // cancels out at that point.
  if (buttonIndex == CONFIRM_RESTART_PROMPT_RESTART_NOW) {
    let cancelQuit = Cc["@mozilla.org/supports-PRBool;1"].createInstance(
      Ci.nsISupportsPRBool
    );
    Services.obs.notifyObservers(
      cancelQuit,
      "quit-application-requested",
      "restart"
    );
    if (cancelQuit.data) {
      buttonIndex = CONFIRM_RESTART_PROMPT_CANCEL;
    }
  }
  return buttonIndex;
}

// This function is used to append search keywords found
// in the related subdialog to the button that will activate the subdialog.
function appendSearchKeywords(aId, keywords) {
  let element = document.getElementById(aId);
  let searchKeywords = element.getAttribute("searchkeywords");
  if (searchKeywords) {
    keywords.push(searchKeywords);
  }
  element.setAttribute("searchkeywords", keywords.join(" "));
}

async function ensureScrollPadding() {
  let stickyContainer = document.querySelector(".sticky-container");
  let height = await window.browsingContext.topChromeWindow
    .promiseDocumentFlushed(() => stickyContainer.clientHeight)
    .catch(err => Cu.reportError); // Can reject if the window goes away.

  // Make it a bit more, to ensure focus rectangles etc. don't get cut off.
  // This being 8px causes us to end up with 90px if the policies container
  // is not visible (the common case), which matches the CSS and thus won't
  // cause a style change, repaint, or other changes.
  height += 8;
  stickyContainer
    .closest(".main-content")
    .style.setProperty("scroll-padding-top", height + "px");
}

function maybeDisplayPoliciesNotice() {
  if (Services.policies.status == Services.policies.ACTIVE) {
    document.getElementById("policies-container").removeAttribute("hidden");
    ensureScrollPadding();
  }
}