/*
 * Bug 1238183 - Test cases for forgetAboutSite with userContextId.
 */

const CC = Components.Constructor;

let {ForgetAboutSite} = ChromeUtils.import("resource://gre/modules/ForgetAboutSite.jsm", {});
ChromeUtils.import("resource://gre/modules/Services.jsm");
let {HttpServer} = ChromeUtils.import("resource://testing-common/httpd.js", {});

const USER_CONTEXTS = [
  "default",
  "personal",
];
const TEST_HOST = "example.com";
const TEST_URL = "http://" + TEST_HOST + "/browser/browser/components/contextualidentity/test/browser/";
const COOKIE_NAME = "userContextId";

// Counter for image load hits.
let gHits = 0;

let gHttpServer = null;

function imageHandler(metadata, response) {
  // A 1x1 PNG image.
  // Source: https://commons.wikimedia.org/wiki/File:1x1.png (Public Domain)
  const IMAGE = atob("iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAA" +
                     "ACnej3aAAAAAXRSTlMAQObYZgAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII=");
  gHits++;
  response.setHeader("Cache-Control", "max-age=10000", false);
  response.setStatusLine(metadata.httpVersion, 200, "OK");
  response.setHeader("Content-Type", "image/png", false);
  response.write(IMAGE);
}

function loadImagePageHandler(metadata, response) {
  response.setHeader("Cache-Control", "max-age=10000", false);
  response.setStatusLine(metadata.httpVersion, 200, "Ok");
  response.setHeader("Content-Type", "text/html", false);
  let body = "<!DOCTYPE HTML>\
              <html>\
                <head>\
                  <meta charset='utf-8'>\
                  <title>Load Image</title>\
                </head>\
                <body>\
                <img src='image.png'>\
                </body>\
              </html>";
  response.bodyOutputStream.write(body, body.length);
}

async function openTabInUserContext(uri, userContextId) {
  // Open the tab in the correct userContextId.
  let tab = BrowserTestUtils.addTab(gBrowser, uri, {userContextId});

  // Select tab and make sure its browser is focused.
  gBrowser.selectedTab = tab;
  tab.ownerGlobal.focus();

  let browser = gBrowser.getBrowserForTab(tab);
  await BrowserTestUtils.browserLoaded(browser);
  return {tab, browser};
}

function getCookiesForOA(host, userContextId) {
  return Services.cookies.getCookiesFromHost(host, {userContextId});
}

function createURI(uri) {
  return Services.io.newURI(uri);
}

function getCacheStorage(where, lci, appcache) {
  if (!lci) lci = Services.loadContextInfo.default;
  switch (where) {
    case "disk": return Services.cache2.diskCacheStorage(lci, false);
    case "memory": return Services.cache2.memoryCacheStorage(lci);
    case "appcache": return Services.cache2.appCacheStorage(lci, appcache);
    case "pin": return Services.cache2.pinningCacheStorage(lci);
  }
  return null;
}

function OpenCacheEntry(key, where, flags, lci) {
  return new Promise(resolve => {
    key = createURI(key);
    function CacheListener() { }
    CacheListener.prototype = {
      _appCache: null,

      QueryInterface: ChromeUtils.generateQI(["nsICacheEntryOpenCallback"]),

      onCacheEntryCheck(entry, appCache) {
        return Ci.nsICacheEntryOpenCallback.ENTRY_WANTED;
      },

      onCacheEntryAvailable(entry, isnew, appCache, status) {
        resolve();
      },

      run() {
        let storage = getCacheStorage(where, lci, this._appCache);
        storage.asyncOpenURI(key, "", flags, this);
      }
    };

    (new CacheListener()).run();
  });
}

//
// Test functions.
//

// Cookies
async function test_cookie_cleared() {
  let tabs = [];

  for (let userContextId of Object.keys(USER_CONTEXTS)) {
    // Load the page in 2 different contexts and set a cookie
    // which should only be visible in that context.
    let value = USER_CONTEXTS[userContextId];

    // Open our tab in the given user context.
    tabs[userContextId] = await openTabInUserContext(TEST_URL + "file_reflect_cookie_into_title.html?" + value, userContextId);

    // Close this tab.
    BrowserTestUtils.removeTab(tabs[userContextId].tab);
  }
  // Check that cookies have been set properly.
  for (let userContextId of Object.keys(USER_CONTEXTS)) {
    let enumerator = getCookiesForOA(TEST_HOST, userContextId);
    ok(enumerator.hasMoreElements(), "Cookies available");

    let foundCookie = enumerator.getNext().QueryInterface(Ci.nsICookie2);
    Assert.equal(foundCookie.name, COOKIE_NAME, "Check cookie name");
    Assert.equal(foundCookie.value, USER_CONTEXTS[userContextId], "Check cookie value");
  }

  // Forget the site.
  await ForgetAboutSite.removeDataFromDomain(TEST_HOST);

  // Check that whether cookies has been cleared or not.
  for (let userContextId of Object.keys(USER_CONTEXTS)) {
    let enumerator = getCookiesForOA(TEST_HOST, userContextId);
    ok(!enumerator.hasMoreElements(), "No Cookie should be here");
  }
}

// Cache
async function test_cache_cleared() {
  // First, add some caches.
  for (let userContextId of Object.keys(USER_CONTEXTS)) {
    await OpenCacheEntry("http://" + TEST_HOST + "/",
                         "disk",
                         Ci.nsICacheStorage.OPEN_NORMALLY,
                         Services.loadContextInfo.custom(false, {userContextId}));

    await OpenCacheEntry("http://" + TEST_HOST + "/",
                         "memory",
                         Ci.nsICacheStorage.OPEN_NORMALLY,
                         Services.loadContextInfo.custom(false, {userContextId}));
  }


  // Check that caches have been set correctly.
  for (let userContextId of Object.keys(USER_CONTEXTS)) {
    let mem = getCacheStorage("memory", Services.loadContextInfo.custom(false, {userContextId}));
    let disk = getCacheStorage("disk", Services.loadContextInfo.custom(false, {userContextId}));

    Assert.ok(mem.exists(createURI("http://" + TEST_HOST + "/"), ""), "The memory cache has been set correctly");
    Assert.ok(disk.exists(createURI("http://" + TEST_HOST + "/"), ""), "The disk cache has been set correctly");
  }

  // Forget the site.
  await ForgetAboutSite.removeDataFromDomain(TEST_HOST);

  // Check that do caches be removed or not?
  for (let userContextId of Object.keys(USER_CONTEXTS)) {
    let mem = getCacheStorage("memory", Services.loadContextInfo.custom(false, {userContextId}));
    let disk = getCacheStorage("disk", Services.loadContextInfo.custom(false, {userContextId}));

    Assert.ok(!mem.exists(createURI("http://" + TEST_HOST + "/"), ""), "The memory cache is cleared");
    Assert.ok(!disk.exists(createURI("http://" + TEST_HOST + "/"), ""), "The disk cache is cleared");
  }
}

// Image Cache
async function test_image_cache_cleared() {
  let tabs = [];

  for (let userContextId of Object.keys(USER_CONTEXTS)) {
    // Open our tab in the given user context to cache image.
    tabs[userContextId] = await openTabInUserContext("http://localhost:" + gHttpServer.identity.primaryPort + "/loadImage.html",
                                                      userContextId);
    BrowserTestUtils.removeTab(tabs[userContextId].tab);
  }

  let expectedHits = USER_CONTEXTS.length;

  // Check that image cache works with the userContextId.
  is(gHits, expectedHits, "The image should be loaded" + expectedHits + "times.");

  // Reset the cache count.
  gHits = 0;

  // Forget the site.
  await ForgetAboutSite.removeDataFromDomain("localhost");

  // Load again.
  for (let userContextId of Object.keys(USER_CONTEXTS)) {
    // Open our tab in the given user context to cache image.
    tabs[userContextId] = await openTabInUserContext("http://localhost:" + gHttpServer.identity.primaryPort + "/loadImage.html",
                                                      userContextId);
    BrowserTestUtils.removeTab(tabs[userContextId].tab);
  }

  // Check that image cache was cleared and the server gets another two hits.
  is(gHits, expectedHits, "The image should be loaded" + expectedHits + "times.");
}

// Offline Storage
async function test_storage_cleared() {
  for (let userContextId of Object.keys(USER_CONTEXTS)) {
    // Load the page in 2 different contexts and set the local storage
    // which should only be visible in that context.
    let value = USER_CONTEXTS[userContextId];

    // Open our tab in the given user context.
    let tabInfo = await openTabInUserContext(TEST_URL + "file_set_storages.html?" + value, userContextId);

    // Check that the storages has been set correctly.
    await ContentTask.spawn(tabInfo.browser, { userContext: USER_CONTEXTS[userContextId] }, async function(arg) {
      // Check that the local storage has been set correctly.
      Assert.equal(content.localStorage.getItem("userContext"), arg.userContext, "Check the local storage value");

      // Check that the session storage has been set correctly.
      Assert.equal(content.sessionStorage.getItem("userContext"), arg.userContext, "Check the session storage value");

      // Check that the indexedDB has been set correctly.
      let request = content.indexedDB.open("idb", 1);

      let db = await new Promise(done => {
        request.onsuccess = event => {
          done(event.target.result);
        };
      });

      let transaction = db.transaction(["obj"], "readonly");
      let store = transaction.objectStore("obj");
      let storeRequest = store.get(1);

      await new Promise(done => {
        storeRequest.onsuccess = event => {
          let res = storeRequest.result;
          Assert.equal(res.userContext, arg.userContext, "Check the indexedDB value");
          done();
        };
      });
    });

    // Close this tab.
    BrowserTestUtils.removeTab(tabInfo.tab);
  }

  // Forget the site.
  await ForgetAboutSite.removeDataFromDomain(TEST_HOST);

  // Open the tab again without setting the localStorage and check that the
  // local storage has been cleared or not.
  for (let userContextId of Object.keys(USER_CONTEXTS)) {
    // Open our tab in the given user context without setting local storage.
    let tabInfo = await openTabInUserContext(TEST_URL + "file_set_storages.html", userContextId);

    // Check that do storages be cleared or not.
    await ContentTask.spawn(tabInfo.browser, null, async function() {
      // Check that does the local storage be cleared or not.
      Assert.ok(!content.localStorage.getItem("userContext"), "The local storage has been cleared");

      // Check that does the session storage be cleared or not.
      Assert.ok(!content.sessionStorage.getItem("userContext"), "The session storage has been cleared");

      // Check that does the indexedDB be cleared or not.
      let request = content.indexedDB.open("idb", 1);

      let db = await new Promise(done => {
        request.onsuccess = event => {
          done(event.target.result);
        };
      });
      try {
        db.transaction(["obj"], "readonly");
        Assert.ok(false, "The indexedDB should not exist");
      } catch (e) {
        Assert.equal(e.name, "NotFoundError", "The indexedDB does not exist as expected");
      }
    });

    // Close the tab.
    BrowserTestUtils.removeTab(tabInfo.tab);
  }
}

add_task(async function setup() {
  // Make sure userContext is enabled.
  await SpecialPowers.pushPrefEnv({"set": [
    ["privacy.userContext.enabled", true]
  ]});

  // Create a http server for the image cache test.
  if (!gHttpServer) {
    gHttpServer = new HttpServer();
    gHttpServer.registerPathHandler("/image.png", imageHandler);
    gHttpServer.registerPathHandler("/loadImage.html", loadImagePageHandler);
    gHttpServer.start(-1);
  }
});

let tests = [
  test_cookie_cleared,
  test_cache_cleared,
  test_image_cache_cleared,
  test_storage_cleared,
];

add_task(async function test() {
  for (let i = 0; i < tests.length; i++)
    add_task(tests[i]);
});

registerCleanupFunction(() => {
  gHttpServer.stop(() => {
    gHttpServer = null;
  });
});
