/* 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/. */

// These tests check the behavior of the Urlbar when search terms are shown
// and the user reverts the Urlbar.

let defaultTestEngine;

// The main search keyword used in tests
const SEARCH_STRING = "chocolate cake";

add_setup(async function () {
  await SpecialPowers.pushPrefEnv({
    set: [["browser.urlbar.showSearchTerms.featureGate", true]],
  });

  await SearchTestUtils.installSearchExtension(
    {
      name: "MozSearch",
      search_url: "https://www.example.com/",
      search_url_get_params: "q={searchTerms}&pc=fake_code",
    },
    { setAsDefault: true }
  );
  defaultTestEngine = Services.search.getEngineByName("MozSearch");

  registerCleanupFunction(async function () {
    await PlacesUtils.history.clear();
  });
});

async function searchWithTab(
  searchString,
  tab = null,
  engine = defaultTestEngine
) {
  if (!tab) {
    tab = await BrowserTestUtils.openNewForegroundTab(gBrowser);
  }

  let [expectedSearchUrl] = UrlbarUtils.getSearchQueryUrl(engine, searchString);
  let browserLoadedPromise = BrowserTestUtils.browserLoaded(
    tab.linkedBrowser,
    false,
    expectedSearchUrl
  );

  gURLBar.focus();
  await UrlbarTestUtils.promiseAutocompleteResultPopup({
    window,
    waitForFocus,
    value: searchString,
    fireInputEvent: true,
  });
  EventUtils.synthesizeKey("KEY_Enter");
  await browserLoadedPromise;

  assertSearchStringIsInUrlbar(searchString);

  return { tab, expectedSearchUrl };
}

function synthesizeRevert() {
  gURLBar.focus();
  EventUtils.synthesizeKey("KEY_Escape", { repeat: 2 });
}

// Users should be able to revert the URL bar
add_task(async function revert() {
  let { tab, expectedSearchUrl } = await searchWithTab(SEARCH_STRING);
  synthesizeRevert();

  Assert.equal(
    gURLBar.value,
    expectedSearchUrl,
    `Urlbar should have the reverted URI ${expectedSearchUrl} as its value.`
  );

  BrowserTestUtils.removeTab(tab);
});

// Users should be able to revert the URL bar,
// and go to the same page.
add_task(async function revert_and_press_enter() {
  let { tab, expectedSearchUrl } = await searchWithTab(SEARCH_STRING);
  let browserLoadedPromise = BrowserTestUtils.browserLoaded(
    tab.linkedBrowser,
    false,
    expectedSearchUrl
  );

  synthesizeRevert();
  gURLBar.focus();
  EventUtils.synthesizeKey("KEY_Enter");
  await browserLoadedPromise;

  BrowserTestUtils.removeTab(tab);
});

// Users should be able to revert the URL, and then if they navigate
// to another tab, the tab that was reverted will show the search term again.
add_task(async function revert_and_change_tab() {
  let { tab, expectedSearchUrl } = await searchWithTab(SEARCH_STRING);

  synthesizeRevert();

  Assert.notEqual(
    gURLBar.value,
    SEARCH_STRING,
    `Search string ${SEARCH_STRING} should not be in the url bar`
  );
  Assert.equal(
    gURLBar.value,
    expectedSearchUrl,
    `Urlbar should have ${expectedSearchUrl} as value.`
  );

  // Open another tab
  let tab2 = await BrowserTestUtils.openNewForegroundTab(gBrowser);

  // Switch back to the original tab.
  await BrowserTestUtils.switchTab(gBrowser, tab);

  // Because the urlbar is focused, the pageproxystate should be invalid.
  assertSearchStringIsInUrlbar(SEARCH_STRING, { pageProxyState: "invalid" });

  BrowserTestUtils.removeTab(tab);
  BrowserTestUtils.removeTab(tab2);
});

// If a user reverts a tab, and then does another search,
// they should be able to see the search term again.
add_task(async function revert_and_search_again() {
  let { tab } = await searchWithTab(SEARCH_STRING);
  synthesizeRevert();
  await searchWithTab("another search string", tab);
  BrowserTestUtils.removeTab(tab);
});

// If a user reverts the Urlbar while on a default SERP,
// and they navigate away from the page by visiting another
// link or using the back/forward buttons, the Urlbar should
// show the search term again when returning back to the default SERP.
add_task(async function revert_when_using_content() {
  let { tab } = await searchWithTab(SEARCH_STRING);
  synthesizeRevert();
  await searchWithTab("another search string", tab);

  // Revert the page, and then go back and forth in history.
  // The search terms should show up.
  synthesizeRevert();
  let pageShowPromise = BrowserTestUtils.waitForContentEvent(
    tab.linkedBrowser,
    "pageshow"
  );
  tab.linkedBrowser.goBack();
  await pageShowPromise;
  assertSearchStringIsInUrlbar(SEARCH_STRING);

  pageShowPromise = BrowserTestUtils.waitForContentEvent(
    tab.linkedBrowser,
    "pageshow"
  );
  tab.linkedBrowser.goForward();
  await pageShowPromise;
  assertSearchStringIsInUrlbar("another search string");

  BrowserTestUtils.removeTab(tab);
});