/* 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/. */

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

function promiseClearHistory() {
  return new Promise(resolve => {
    let observer = {
      observe(aSubject, aTopic, aData) {
        Services.obs.removeObserver(
          this,
          "browser:purge-session-history-for-domain"
        );
        resolve();
      },
    };
    Services.obs.addObserver(
      observer,
      "browser:purge-session-history-for-domain"
    );
  });
}

add_task(async function () {
  /** Test for Bug 464199 **/

  const REMEMBER = Date.now(),
    FORGET = Math.random();
  let test_state = {
    windows: [
      {
        tabs: [{ entries: [] }],
        _closedTabs: [
          {
            state: { entries: [{ url: "http://www.example.net/" }] },
            title: FORGET,
          },
          {
            state: { entries: [{ url: "http://www.example.org/" }] },
            title: REMEMBER,
          },
          {
            state: {
              entries: [
                { url: "http://www.example.net/" },
                { url: "http://www.example.org/" },
              ],
            },
            title: FORGET,
          },
          {
            state: { entries: [{ url: "http://example.net/" }] },
            title: FORGET,
          },
          {
            state: { entries: [{ url: "http://sub.example.net/" }] },
            title: FORGET,
          },
          {
            state: { entries: [{ url: "http://www.example.net:8080/" }] },
            title: FORGET,
          },
          { state: { entries: [{ url: "about:license" }] }, title: REMEMBER },
          {
            state: {
              entries: [
                {
                  url: "http://www.example.org/frameset",
                  children: [
                    { url: "http://www.example.org/frame" },
                    { url: "http://www.example.org:8080/frame2" },
                  ],
                },
              ],
            },
            title: REMEMBER,
          },
          {
            state: {
              entries: [
                {
                  url: "http://www.example.org/frameset",
                  children: [
                    { url: "http://www.example.org/frame" },
                    { url: "http://www.example.net/frame" },
                  ],
                },
              ],
            },
            title: FORGET,
          },
          {
            state: {
              entries: [
                {
                  url: "http://www.example.org/form",
                  formdata: { id: { url: "http://www.example.net/" } },
                },
              ],
            },
            title: REMEMBER,
          },
          {
            state: {
              entries: [{ url: "http://www.example.org/form" }],
              extData: { setCustomTabValue: "http://example.net:80" },
            },
            title: REMEMBER,
          },
        ],
      },
    ],
  };
  let remember_count = 5;

  function countByTitle(aClosedTabList, aTitle) {
    return aClosedTabList.filter(aData => aData.title == aTitle).length;
  }

  // open a window and add the above closed tab list
  let newWin = openDialog(location, "", "chrome,all,dialog=no");
  await promiseWindowLoaded(newWin);
  Services.prefs.setIntPref(
    "browser.sessionstore.max_tabs_undo",
    test_state.windows[0]._closedTabs.length
  );

  let restoring = promiseWindowRestoring(newWin);
  let restored = promiseWindowRestored(newWin);
  ss.setWindowState(newWin, JSON.stringify(test_state), true);
  await restoring;
  await restored;

  let closedTabs = ss.getClosedTabDataForWindow(newWin);
  is(
    closedTabs.length,
    test_state.windows[0]._closedTabs.length,
    "Closed tab list has the expected length"
  );
  is(
    countByTitle(closedTabs, FORGET),
    test_state.windows[0]._closedTabs.length - remember_count,
    "The correct amout of tabs are to be forgotten"
  );
  is(
    countByTitle(closedTabs, REMEMBER),
    remember_count,
    "Everything is set up."
  );

  let promise = promiseClearHistory();
  await ForgetAboutSite.removeDataFromDomain("example.net");
  await promise;
  closedTabs = ss.getClosedTabDataForWindow(newWin);
  is(
    closedTabs.length,
    remember_count,
    "The correct amout of tabs was removed"
  );
  is(
    countByTitle(closedTabs, FORGET),
    0,
    "All tabs to be forgotten were indeed removed"
  );
  is(
    countByTitle(closedTabs, REMEMBER),
    remember_count,
    "... and tabs to be remembered weren't."
  );
  // clean up
  Services.prefs.clearUserPref("browser.sessionstore.max_tabs_undo");
  await BrowserTestUtils.closeWindow(newWin);
});