/* 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/. */

const PREF_RESTORE_ON_DEMAND = "browser.sessionstore.restore_on_demand";

add_task(async function test() {
  Services.prefs.setBoolPref(PREF_RESTORE_ON_DEMAND, true);
  registerCleanupFunction(function() {
    Services.prefs.clearUserPref(PREF_RESTORE_ON_DEMAND);
  });

  let state = { windows: [{ tabs: [
    { entries: [{ url: "http://example.org/#1", triggeringPrincipal_base64 }], extData: { "uniq": r() } },
    { entries: [{ url: "http://example.org/#2", triggeringPrincipal_base64 }], extData: { "uniq": r() } },
    { entries: [{ url: "http://example.org/#3", triggeringPrincipal_base64 }], extData: { "uniq": r() } },
    { entries: [{ url: "http://example.org/#4", triggeringPrincipal_base64 }], extData: { "uniq": r() } },
    { entries: [{ url: "http://example.org/#5", triggeringPrincipal_base64 }], extData: { "uniq": r() } },
    { entries: [{ url: "http://example.org/#6", triggeringPrincipal_base64 }], extData: { "uniq": r() } },
    { entries: [{ url: "http://example.org/#7", triggeringPrincipal_base64 }], extData: { "uniq": r() } },
    { entries: [{ url: "http://example.org/#8", triggeringPrincipal_base64 }], extData: { "uniq": r() } },
    { entries: [{ url: "http://example.org/#9", triggeringPrincipal_base64 }], extData: { "uniq": r() } },
  ], selected: 1 }] };

  let loadCount = 0;
  let promiseRestoringTabs = new Promise(resolve => {
    gBrowser.tabContainer.addEventListener("SSTabRestored", function onRestored(event) {
      let tab = event.target;
      let browser = tab.linkedBrowser;
      let tabData = state.windows[0].tabs[loadCount++];

      // double check that this tab was the right one
      is(browser.currentURI.spec, tabData.entries[0].url,
         "load " + loadCount + " - browser loaded correct url");
      is(ss.getCustomTabValue(tab, "uniq"), tabData.extData.uniq,
         "load " + loadCount + " - correct tab was restored");

      if (loadCount == state.windows[0].tabs.length) {
        gBrowser.tabContainer.removeEventListener("SSTabRestored", onRestored);
        resolve();
      } else {
        // reload the next tab
        gBrowser.browsers[loadCount].reload();
      }
    });
  });

  let backupState = ss.getBrowserState();
  ss.setBrowserState(JSON.stringify(state));
  await promiseRestoringTabs;

  // Cleanup.
  await promiseBrowserState(backupState);
});
