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

"use strict";

// Test the primary browser navigation UI to verify it's connected to the viewport.

const DUMMY_1_URL = "http://example.com/";
const TEST_URL = `${URL_ROOT}doc_page_state.html`;
const DUMMY_2_URL = "http://example.com/browser/";
const DUMMY_3_URL = "http://example.com/browser/devtools/";

addRDMTask(
  null,
  async function() {
    await SpecialPowers.pushPrefEnv({
      set: [["browser.navigation.requireUserInteraction", false]],
    });

    // Load up a sequence of pages:
    // 0. DUMMY_1_URL
    // 1. TEST_URL
    // 2. DUMMY_2_URL
    const tab = await addTab(DUMMY_1_URL);
    const browser = tab.linkedBrowser;
    await load(browser, TEST_URL);
    await load(browser, DUMMY_2_URL);

    // Check session history state
    let history = await getSessionHistory(browser);
    is(history.index - 1, 2, "At page 2 in history");
    is(history.entries.length, 3, "3 pages in history");
    is(history.entries[0].url, DUMMY_1_URL, "Page 0 URL matches");
    is(history.entries[1].url, TEST_URL, "Page 1 URL matches");
    is(history.entries[2].url, DUMMY_2_URL, "Page 2 URL matches");

    // Go back one so we're at the test page
    await back(browser);

    // Check session history state
    history = await getSessionHistory(browser);
    is(history.index - 1, 1, "At page 1 in history");
    is(history.entries.length, 3, "3 pages in history");
    is(history.entries[0].url, DUMMY_1_URL, "Page 0 URL matches");
    is(history.entries[1].url, TEST_URL, "Page 1 URL matches");
    is(history.entries[2].url, DUMMY_2_URL, "Page 2 URL matches");

    const { ui } = await openRDM(tab);
    await waitForDeviceAndViewportState(ui);

    ok(browser.webNavigation.canGoBack, "Going back is allowed");
    ok(browser.webNavigation.canGoForward, "Going forward is allowed");
    is(browser.documentURI.spec, TEST_URL, "documentURI matches page 1");
    is(browser.contentTitle, "Page State Test", "contentTitle matches page 1");

    await forward(browser);

    ok(browser.webNavigation.canGoBack, "Going back is allowed");
    ok(!browser.webNavigation.canGoForward, "Going forward is not allowed");
    is(browser.documentURI.spec, DUMMY_2_URL, "documentURI matches page 2");
    is(
      browser.contentTitle,
      "mochitest index /browser/",
      "contentTitle matches page 2"
    );

    await back(browser);
    await back(browser);

    ok(!browser.webNavigation.canGoBack, "Going back is not allowed");
    ok(browser.webNavigation.canGoForward, "Going forward is allowed");
    is(browser.documentURI.spec, DUMMY_1_URL, "documentURI matches page 0");
    is(
      browser.contentTitle,
      "mochitest index /",
      "contentTitle matches page 0"
    );

    await load(browser, DUMMY_3_URL);

    ok(browser.webNavigation.canGoBack, "Going back is allowed");
    ok(!browser.webNavigation.canGoForward, "Going forward is not allowed");
    is(browser.documentURI.spec, DUMMY_3_URL, "documentURI matches page 3");
    is(
      browser.contentTitle,
      "mochitest index /browser/devtools/",
      "contentTitle matches page 3"
    );

    await closeRDM(tab);

    // Check session history state
    history = await getSessionHistory(browser);
    is(history.index - 1, 1, "At page 1 in history");
    is(history.entries.length, 2, "2 pages in history");
    is(history.entries[0].url, DUMMY_1_URL, "Page 0 URL matches");
    is(history.entries[1].url, DUMMY_3_URL, "Page 1 URL matches");

    await removeTab(tab);
  },
  { onlyPrefAndTask: true }
);
