"use strict";

ChromeUtils.import("resource://gre/modules/XPCOMUtils.jsm", this);

/**
 * A wrapper for the findbar's method "close", which is not synchronous
 * because of animation.
 */
function closeFindbarAndWait(findbar) {
  return new Promise(resolve => {
    if (findbar.hidden) {
      resolve();
      return;
    }
    findbar.addEventListener("transitionend", function cont(aEvent) {
      if (aEvent.propertyName != "visibility") {
        return;
      }
      findbar.removeEventListener("transitionend", cont);
      resolve();
    });
    let close = findbar.getElement("find-closebutton");
    close.doCommand();
  });
}

function pushPrefs(...aPrefs) {
  return new Promise(resolve => {
    SpecialPowers.pushPrefEnv({ set: aPrefs }, resolve);
  });
}

/**
 * Used to check whether the audio unblocking icon is in the tab.
 */
async function waitForTabBlockEvent(tab, expectBlocked) {
  if (tab.activeMediaBlocked == expectBlocked) {
    ok(true, "The tab should " + (expectBlocked ? "" : "not ") + "be blocked");
  } else {
    info("Block state doens't match, wait for attributes changes.");
    await BrowserTestUtils.waitForEvent(
      tab,
      "TabAttrModified",
      false,
      event => {
        if (event.detail.changed.includes("activemedia-blocked")) {
          is(
            tab.activeMediaBlocked,
            expectBlocked,
            "The tab should " + (expectBlocked ? "" : "not ") + "be blocked"
          );
          return true;
        }
        return false;
      }
    );
  }
}

/**
 * Used to check whether the tab has soundplaying attribute.
 */
async function waitForTabPlayingEvent(tab, expectPlaying) {
  if (tab.soundPlaying == expectPlaying) {
    ok(true, "The tab should " + (expectPlaying ? "" : "not ") + "be playing");
  } else {
    info("Playing state doesn't match, wait for attributes changes.");
    await BrowserTestUtils.waitForEvent(
      tab,
      "TabAttrModified",
      false,
      event => {
        if (event.detail.changed.includes("soundplaying")) {
          is(
            tab.soundPlaying,
            expectPlaying,
            "The tab should " + (expectPlaying ? "" : "not ") + "be playing"
          );
          return true;
        }
        return false;
      }
    );
  }
}

function getTestPlugin(pluginName) {
  var ph = SpecialPowers.Cc["@mozilla.org/plugin/host;1"].getService(
    SpecialPowers.Ci.nsIPluginHost
  );
  var tags = ph.getPluginTags();
  var name = pluginName || "Test Plug-in";
  for (var tag of tags) {
    if (tag.name == name) {
      return tag;
    }
  }

  ok(false, "Could not find plugin tag with plugin name '" + name + "'");
  return null;
}

async function setTestPluginEnabledState(newEnabledState, pluginName) {
  var oldEnabledState = await SpecialPowers.setTestPluginEnabledState(
    newEnabledState,
    pluginName
  );
  if (!oldEnabledState) {
    return;
  }
  var plugin = getTestPlugin(pluginName);
  // Run a nested event loop to wait for the preference change to
  // propagate to the child. Yuck!
  SpecialPowers.Services.tm.spinEventLoopUntil(() => {
    return plugin.enabledState == newEnabledState;
  });
  SimpleTest.registerCleanupFunction(function() {
    return SpecialPowers.setTestPluginEnabledState(oldEnabledState, pluginName);
  });
}

function disable_non_test_mouse(disable) {
  let utils = window.windowUtils;
  utils.disableNonTestMouseEvents(disable);
}

function hover_icon(icon, tooltip) {
  disable_non_test_mouse(true);

  let popupShownPromise = BrowserTestUtils.waitForEvent(tooltip, "popupshown");
  EventUtils.synthesizeMouse(icon, 1, 1, { type: "mouseover" });
  EventUtils.synthesizeMouse(icon, 2, 2, { type: "mousemove" });
  EventUtils.synthesizeMouse(icon, 3, 3, { type: "mousemove" });
  EventUtils.synthesizeMouse(icon, 4, 4, { type: "mousemove" });
  return popupShownPromise;
}

function leave_icon(icon) {
  EventUtils.synthesizeMouse(icon, 0, 0, { type: "mouseout" });
  EventUtils.synthesizeMouseAtCenter(document.documentElement, {
    type: "mousemove",
  });
  EventUtils.synthesizeMouseAtCenter(document.documentElement, {
    type: "mousemove",
  });
  EventUtils.synthesizeMouseAtCenter(document.documentElement, {
    type: "mousemove",
  });

  disable_non_test_mouse(false);
}

/**
 * Helper class for testing datetime input picker widget
 */
class DateTimeTestHelper {
  constructor() {
    this.panel = gBrowser._getAndMaybeCreateDateTimePickerPanel();
    this.panel.setAttribute("animate", false);
    this.tab = null;
    this.frame = null;
  }

  /**
   * Opens a new tab with the URL of the test page, and make sure the picker is
   * ready for testing.
   *
   * @param  {String} pageUrl
   * @param  {bool} inFrame true if input is in the first child frame
   */
  async openPicker(pageUrl, inFrame) {
    this.tab = await BrowserTestUtils.openNewForegroundTab(gBrowser, pageUrl);
    let bc = gBrowser.selectedBrowser;
    if (inFrame) {
      await SpecialPowers.spawn(bc, [], async function() {
        const iframe = content.document.querySelector("iframe");
        // Ensure the iframe's position is correct before doing any
        // other operations
        iframe.getBoundingClientRect();
      });
      bc = bc.browsingContext.children[0];
    }
    await BrowserTestUtils.synthesizeMouseAtCenter("input", {}, bc);
    this.frame = this.panel.querySelector("#dateTimePopupFrame");
    await this.waitForPickerReady();
  }

  promisePickerClosed() {
    return new Promise(resolve => {
      this.panel.addEventListener("popuphidden", resolve, { once: true });
    });
  }

  async waitForPickerReady() {
    let readyPromise;
    let loadPromise = new Promise(resolve => {
      this.frame.addEventListener(
        "load",
        () => {
          // Add the PickerReady event listener directly inside the load event
          // listener to avoid missing the event.
          readyPromise = BrowserTestUtils.waitForEvent(
            this.frame.contentDocument,
            "PickerReady"
          );
          resolve();
        },
        { capture: true, once: true }
      );
    });

    await loadPromise;
    // Wait for picker elements to be ready
    await readyPromise;
  }

  /**
   * Find an element on the picker.
   *
   * @param  {String} selector
   * @return {DOMElement}
   */
  getElement(selector) {
    return this.frame.contentDocument.querySelector(selector);
  }

  /**
   * Find the children of an element on the picker.
   *
   * @param  {String} selector
   * @return {Array<DOMElement>}
   */
  getChildren(selector) {
    return Array.from(this.getElement(selector).children);
  }

  /**
   * Click on an element
   *
   * @param  {DOMElement} element
   */
  click(element) {
    EventUtils.synthesizeMouseAtCenter(element, {}, this.frame.contentWindow);
  }

  /**
   * Close the panel and the tab
   */
  async tearDown() {
    if (!this.panel.hidden) {
      let pickerClosePromise = this.promisePickerClosed();
      this.panel.hidePopup();
      await pickerClosePromise;
    }
    BrowserTestUtils.removeTab(this.tab);
    this.tab = null;
  }

  /**
   * Clean up after tests. Remove the frame to prevent leak.
   */
  cleanup() {
    this.frame.remove();
    this.frame = null;
    this.panel.removeAttribute("animate");
    this.panel = null;
  }
}

/**
 * Used to listen events if you just need it once
 */
function once(target, name) {
  var p = new Promise(function(resolve, reject) {
    target.addEventListener(
      name,
      function() {
        resolve();
      },
      { once: true }
    );
  });
  return p;
}

/**
 * check if current wakelock is equal to expected state, if not, then wait until
 * the wakelock changes its state to expected state.
 * @param needLock
 *        the wakolock should be locked or not
 * @param isForegroundLock
 *        when the lock is on, the wakelock should be in the foreground or not
 */
async function waitForExpectedWakeLockState(
  topic,
  { needLock, isForegroundLock }
) {
  const powerManagerService = Cc["@mozilla.org/power/powermanagerservice;1"];
  const powerManager = powerManagerService.getService(
    Ci.nsIPowerManagerService
  );
  const wakelockState = powerManager.getWakeLockState(topic);
  let expectedLockState = "unlocked";
  if (needLock) {
    expectedLockState = isForegroundLock
      ? "locked-foreground"
      : "locked-background";
  }
  if (wakelockState != expectedLockState) {
    info(`wait until wakelock becomes ${expectedLockState}`);
    await wakeLockObserved(
      powerManager,
      topic,
      state => state == expectedLockState
    );
  }
  is(
    powerManager.getWakeLockState(topic),
    expectedLockState,
    `the wakelock state for '${topic}' is equal to '${expectedLockState}'`
  );
}

function wakeLockObserved(powerManager, observeTopic, checkFn) {
  return new Promise(resolve => {
    function wakeLockListener() {}
    wakeLockListener.prototype = {
      QueryInterface: ChromeUtils.generateQI(["nsIDOMMozWakeLockListener"]),
      callback(topic, state) {
        if (topic == observeTopic && checkFn(state)) {
          powerManager.removeWakeLockListener(wakeLockListener.prototype);
          resolve();
        }
      },
    };
    powerManager.addWakeLockListener(wakeLockListener.prototype);
  });
}