/* Any copyright is dedicated to the Public Domain.
 * http://creativecommons.org/publicdomain/zero/1.0/ */

/* eslint-env mozilla/frame-script */

const {TabStateFlusher} = ChromeUtils.import("resource:///modules/sessionstore/TabStateFlusher.jsm", {});

const DUMMY = "http://example.com/browser/browser/base/content/test/general/dummy_page.html";

function frameScript() {
  addMessageListener("Test:GetIsAppTab", function() {
    sendAsyncMessage("Test:IsAppTab", { isAppTab: docShell.isAppTab });
  });
}

function loadFrameScript(browser) {
  browser.messageManager.loadFrameScript("data:,(" + frameScript.toString() + ")();", true);
}

function isBrowserAppTab(browser) {
  return new Promise(resolve => {
    function listener({ data }) {
      browser.messageManager.removeMessageListener("Test:IsAppTab", listener);
      resolve(data.isAppTab);
    }
    // It looks like same-process messages may be reordered by the message
    // manager, so we need to wait one tick before sending the message.
    executeSoon(function() {
      browser.messageManager.addMessageListener("Test:IsAppTab", listener);
      browser.messageManager.sendAsyncMessage("Test:GetIsAppTab");
    });
  });
}

// Restarts the child process by crashing it then reloading the tab
var restart = async function(browser) {
  // If the tab isn't remote this would crash the main process so skip it
  if (!browser.isRemoteBrowser)
    return;

  // Make sure the main process has all of the current tab state before crashing
  await TabStateFlusher.flush(browser);

  await BrowserTestUtils.crashBrowser(browser);

  let tab = gBrowser.getTabForBrowser(browser);
  SessionStore.reviveCrashedTab(tab);

  await promiseTabLoaded(tab);
};

add_task(async function navigate() {
  let tab = BrowserTestUtils.addTab(gBrowser, "about:robots");
  let browser = tab.linkedBrowser;
  gBrowser.selectedTab = tab;
  await BrowserTestUtils.browserStopped(gBrowser);
  loadFrameScript(browser);
  let isAppTab = await isBrowserAppTab(browser);
  ok(!isAppTab, "Docshell shouldn't think it is an app tab");

  gBrowser.pinTab(tab);
  isAppTab = await isBrowserAppTab(browser);
  ok(isAppTab, "Docshell should think it is an app tab");

  gBrowser.loadURI(DUMMY);
  await BrowserTestUtils.browserStopped(gBrowser);
  loadFrameScript(browser);
  isAppTab = await isBrowserAppTab(browser);
  ok(isAppTab, "Docshell should think it is an app tab");

  gBrowser.unpinTab(tab);
  isAppTab = await isBrowserAppTab(browser);
  ok(!isAppTab, "Docshell shouldn't think it is an app tab");

  gBrowser.pinTab(tab);
  isAppTab = await isBrowserAppTab(browser);
  ok(isAppTab, "Docshell should think it is an app tab");

  gBrowser.loadURI("about:robots");
  await BrowserTestUtils.browserStopped(gBrowser);
  loadFrameScript(browser);
  isAppTab = await isBrowserAppTab(browser);
  ok(isAppTab, "Docshell should think it is an app tab");

  gBrowser.removeCurrentTab();
});

add_task(async function crash() {
  if (!gMultiProcessBrowser || !AppConstants.MOZ_CRASHREPORTER) {
    return;
  }

  let tab = BrowserTestUtils.addTab(gBrowser, DUMMY);
  let browser = tab.linkedBrowser;
  gBrowser.selectedTab = tab;
  await BrowserTestUtils.browserStopped(gBrowser);
  loadFrameScript(browser);
  let isAppTab = await isBrowserAppTab(browser);
  ok(!isAppTab, "Docshell shouldn't think it is an app tab");

  gBrowser.pinTab(tab);
  isAppTab = await isBrowserAppTab(browser);
  ok(isAppTab, "Docshell should think it is an app tab");

  await restart(browser);
  loadFrameScript(browser);
  isAppTab = await isBrowserAppTab(browser);
  ok(isAppTab, "Docshell should think it is an app tab");

  gBrowser.removeCurrentTab();
});
