/* 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/. */

"use strict";

var EXPORTED_SYMBOLS = ["Tabs"];

const CUST_TAB = "chrome://browser/skin/customize.svg";
const PREFS_TAB = "chrome://global/skin/icons/settings.svg";
const DEFAULT_FAVICON_TAB = `data:text/html,<meta%20charset="utf-8"><title>No%20favicon</title>`;

const { setTimeout } = ChromeUtils.importESModule(
  "resource://gre/modules/Timer.sys.mjs"
);
const { TestUtils } = ChromeUtils.importESModule(
  "resource://testing-common/TestUtils.sys.mjs"
);

var Tabs = {
  init(libDir) {},

  configurations: {
    fiveTabs: {
      selectors: ["#tabbrowser-tabs"],
      async applyConfig() {
        fiveTabsHelper();
        let browserWindow = Services.wm.getMostRecentWindow(
          "navigator:browser"
        );
        hoverTab(browserWindow.gBrowser.tabs[3]);
        await new Promise((resolve, reject) => {
          setTimeout(resolve, 3000);
        });
        await allTabTitlesDisplayed(browserWindow);
      },
    },

    fourPinned: {
      selectors: ["#tabbrowser-tabs"],
      async applyConfig() {
        fiveTabsHelper();
        let browserWindow = Services.wm.getMostRecentWindow(
          "navigator:browser"
        );
        let tab = browserWindow.gBrowser.addTab(PREFS_TAB, {
          triggeringPrincipal: Services.scriptSecurityManager.getSystemPrincipal(),
        });
        browserWindow.gBrowser.pinTab(tab);
        tab = browserWindow.gBrowser.addTab(CUST_TAB, {
          triggeringPrincipal: Services.scriptSecurityManager.getSystemPrincipal(),
        });
        browserWindow.gBrowser.pinTab(tab);
        tab = browserWindow.gBrowser.addTab("about:privatebrowsing", {
          triggeringPrincipal: Services.scriptSecurityManager.getSystemPrincipal(),
        });
        browserWindow.gBrowser.pinTab(tab);
        tab = browserWindow.gBrowser.addTab("about:home", {
          triggeringPrincipal: Services.scriptSecurityManager.getSystemPrincipal(),
        });
        browserWindow.gBrowser.pinTab(tab);
        browserWindow.gBrowser.selectTabAtIndex(5);
        hoverTab(browserWindow.gBrowser.tabs[2]);
        // also hover the new tab button
        let newTabButton = browserWindow.gBrowser.tabContainer.newTabButton;
        hoverTab(newTabButton);

        await new Promise((resolve, reject) => {
          setTimeout(resolve, 3000);
        });
        await allTabTitlesDisplayed(browserWindow);
      },
    },

    twoPinnedWithOverflow: {
      selectors: ["#tabbrowser-tabs"],
      async applyConfig() {
        fiveTabsHelper();

        let browserWindow = Services.wm.getMostRecentWindow(
          "navigator:browser"
        );
        browserWindow.gBrowser.loadTabs(
          [
            PREFS_TAB,
            CUST_TAB,
            "about:home",
            DEFAULT_FAVICON_TAB,
            "about:newtab",
            "about:addons",
            "about:home",
            DEFAULT_FAVICON_TAB,
            "about:newtab",
            "about:addons",
            "about:home",
            DEFAULT_FAVICON_TAB,
            "about:newtab",
            "about:addons",
            "about:home",
            DEFAULT_FAVICON_TAB,
            "about:newtab",
            "about:addons",
            "about:home",
            DEFAULT_FAVICON_TAB,
            "about:newtab",
            "about:addons",
            "about:home",
            DEFAULT_FAVICON_TAB,
            "about:newtab",
            "about:addons",
            "about:home",
            DEFAULT_FAVICON_TAB,
            "about:newtab",
          ],
          {
            inBackground: true,
            replace: true,
            triggeringPrincipal: Services.scriptSecurityManager.getSystemPrincipal(),
          }
        );
        browserWindow.gBrowser.pinTab(browserWindow.gBrowser.tabs[1]);
        browserWindow.gBrowser.pinTab(browserWindow.gBrowser.tabs[2]);
        browserWindow.gBrowser.selectTabAtIndex(3);
        hoverTab(browserWindow.gBrowser.tabs[5]);

        await new Promise((resolve, reject) => {
          setTimeout(resolve, 3000);
        });

        // Make sure the tabstrip is scrolled all the way to the left.
        browserWindow.gBrowser.tabContainer.arrowScrollbox.scrollByIndex(
          -100,
          true
        );

        await allTabTitlesDisplayed(browserWindow);
      },
    },
  },
};

/* helpers */

async function allTabTitlesDisplayed(browserWindow) {
  let specToTitleMap = {
    "about:home": "New Tab",
    "about:newtab": "New Tab",
    "about:addons": "Add-ons Manager",
    "about:privatebrowsing": "about:privatebrowsing",
  };
  specToTitleMap[PREFS_TAB] = "global/skin/icons/settings.svg";
  specToTitleMap[CUST_TAB] = "browser/skin/customize.svg";
  specToTitleMap[DEFAULT_FAVICON_TAB] = "No favicon";

  let tabTitlePromises = [];
  for (let tab of browserWindow.gBrowser.tabs) {
    function getSpec() {
      return (
        tab.linkedBrowser &&
        tab.linkedBrowser.documentURI &&
        tab.linkedBrowser.documentURI.spec
      );
    }
    function tabTitleLoaded() {
      let spec = getSpec();
      return spec ? tab.label == specToTitleMap[spec] : false;
    }
    let promise = TestUtils.waitForCondition(
      tabTitleLoaded,
      `Tab (${getSpec()}) should be showing "${
        specToTitleMap[getSpec()]
      }". Got "${tab.label}"`
    );
    tabTitlePromises.push(promise);
  }

  return Promise.all(tabTitlePromises);
}

function fiveTabsHelper() {
  // some with no favicon and some with. Selected tab in middle.
  closeAllButOneTab("about:addons");

  let browserWindow = Services.wm.getMostRecentWindow("navigator:browser");
  browserWindow.gBrowser.loadTabs(
    [
      "about:addons",
      "about:home",
      DEFAULT_FAVICON_TAB,
      "about:newtab",
      CUST_TAB,
    ],
    {
      inBackground: true,
      replace: true,
      triggeringPrincipal: Services.scriptSecurityManager.getSystemPrincipal(),
    }
  );
  browserWindow.gBrowser.selectTabAtIndex(1);
}

function closeAllButOneTab(url = "about:blank") {
  let browserWindow = Services.wm.getMostRecentWindow("navigator:browser");
  let gBrowser = browserWindow.gBrowser;
  // Close all tabs except the last so we don't quit the browser.
  while (gBrowser.tabs.length > 1) {
    gBrowser.removeTab(gBrowser.selectedTab, { animate: false });
  }
  gBrowser.selectedBrowser.loadURI(Services.io.newURI(url), {
    triggeringPrincipal: Services.scriptSecurityManager.getSystemPrincipal(),
  });
  if (gBrowser.selectedTab.pinned) {
    gBrowser.unpinTab(gBrowser.selectedTab);
  }
  let newTabButton = gBrowser.tabContainer.newTabButton;
  hoverTab(newTabButton, false);
}

function hoverTab(tab, hover = true) {
  if (hover) {
    InspectorUtils.addPseudoClassLock(tab, ":hover");
  } else {
    InspectorUtils.clearPseudoClassLocks(tab);
  }
}