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

"use strict";

ChromeUtils.import("resource://services-common/utils.js");
ChromeUtils.import("resource://gre/modules/FxAccounts.jsm");
ChromeUtils.import("resource://gre/modules/FxAccountsClient.jsm");
ChromeUtils.import("resource://gre/modules/FxAccountsCommon.js");
ChromeUtils.import("resource://gre/modules/Log.jsm");
var {AccountState} = ChromeUtils.import("resource://gre/modules/FxAccounts.jsm", {});

initTestLogging("Trace");

var log = Log.repository.getLogger("Services.FxAccounts.test");
log.level = Log.Level.Debug;

const BOGUS_PUBLICKEY = "BBXOKjUb84pzws1wionFpfCBjDuCh4-s_1b52WA46K5wYL2gCWEOmFKWn_NkS5nmJwTBuO8qxxdjAIDtNeklvQc";
const BOGUS_AUTHKEY = "GSsIiaD2Mr83iPqwFNK4rw";

Services.prefs.setCharPref("identity.fxaccounts.loglevel", "Trace");
Log.repository.getLogger("FirefoxAccounts").level = Log.Level.Trace;

const DEVICE_REGISTRATION_VERSION = 42;

function MockStorageManager() {
}

MockStorageManager.prototype = {
  initialize(accountData) {
    this.accountData = accountData;
  },

  finalize() {
    return Promise.resolve();
  },

  getAccountData() {
    return Promise.resolve(this.accountData);
  },

  updateAccountData(updatedFields) {
    for (let [name, value] of Object.entries(updatedFields)) {
      if (value == null) {
        delete this.accountData[name];
      } else {
        this.accountData[name] = value;
      }
    }
    return Promise.resolve();
  },

  deleteAccountData() {
    this.accountData = null;
    return Promise.resolve();
  }
};

function MockFxAccountsClient(device) {
  this._email = "nobody@example.com";
  this._verified = false;
  this._deletedOnServer = false; // for testing accountStatus

  // mock calls up to the auth server to determine whether the
  // user account has been verified
  this.recoveryEmailStatus = function(sessionToken) {
    // simulate a call to /recovery_email/status
    return Promise.resolve({
      email: this._email,
      verified: this._verified
    });
  };

  this.accountStatus = function(uid) {
    return Promise.resolve(!!uid && (!this._deletedOnServer));
  };

  const { id: deviceId, name: deviceName, type: deviceType, sessionToken } = device;

  this.registerDevice = (st, name, type) => Promise.resolve({ id: deviceId, name });
  this.updateDevice = (st, id, name) => Promise.resolve({ id, name });
  this.signOut = () => Promise.resolve({});
  this.getDeviceList = (st) =>
    Promise.resolve([
      { id: deviceId, name: deviceName, type: deviceType, isCurrentDevice: st === sessionToken }
    ]);

  FxAccountsClient.apply(this);
}
MockFxAccountsClient.prototype = {
  __proto__: FxAccountsClient.prototype
};

function MockFxAccounts(device = {}) {
  return new FxAccounts({
    newAccountState(credentials) {
      // we use a real accountState but mocked storage.
      let storage = new MockStorageManager();
      storage.initialize(credentials);
      return new AccountState(storage);
    },
    _getDeviceName() {
      return device.name || "mock device name";
    },
    fxAccountsClient: new MockFxAccountsClient(device),
    fxaPushService: {
      registerPushEndpoint() {
        return new Promise((resolve) => {
          resolve({
            endpoint: "http://mochi.test:8888",
            getKey(type) {
              return ChromeUtils.base64URLDecode(
                type === "auth" ? BOGUS_AUTHKEY : BOGUS_PUBLICKEY,
                { padding: "ignore" });
            }
          });
        });
      },
      unsubscribe() {
        return Promise.resolve();
      }
    },
    DEVICE_REGISTRATION_VERSION
  });
}

add_task(async function test_updateDeviceRegistration_with_new_device() {
  const deviceName = "foo";
  const deviceType = "bar";

  const credentials = getTestUser("baz");
  const fxa = new MockFxAccounts({ name: deviceName });
  await fxa.internal.setSignedInUser(credentials);
  // Remove the current device registration (setSIgnedInUser does one!).
  await fxa.updateUserAccountData({uid: credentials.uid, device: null});

  const spy = {
    registerDevice: { count: 0, args: [] },
    updateDevice: { count: 0, args: [] },
    getDeviceList: { count: 0, args: [] }
  };
  const client = fxa.internal.fxAccountsClient;
  client.registerDevice = function() {
    spy.registerDevice.count += 1;
    spy.registerDevice.args.push(arguments);
    return Promise.resolve({
      id: "newly-generated device id",
      createdAt: Date.now(),
      name: deviceName,
      type: deviceType
    });
  };
  client.updateDevice = function() {
    spy.updateDevice.count += 1;
    spy.updateDevice.args.push(arguments);
    return Promise.resolve({});
  };
  client.getDeviceList = function() {
    spy.getDeviceList.count += 1;
    spy.getDeviceList.args.push(arguments);
    return Promise.resolve([]);
  };

  await fxa.updateDeviceRegistration();

  Assert.equal(spy.updateDevice.count, 0);
  Assert.equal(spy.getDeviceList.count, 0);
  Assert.equal(spy.registerDevice.count, 1);
  Assert.equal(spy.registerDevice.args[0].length, 4);
  Assert.equal(spy.registerDevice.args[0][0], credentials.sessionToken);
  Assert.equal(spy.registerDevice.args[0][1], deviceName);
  Assert.equal(spy.registerDevice.args[0][2], "desktop");
  Assert.equal(spy.registerDevice.args[0][3].pushCallback, "http://mochi.test:8888");
  Assert.equal(spy.registerDevice.args[0][3].pushPublicKey, BOGUS_PUBLICKEY);
  Assert.equal(spy.registerDevice.args[0][3].pushAuthKey, BOGUS_AUTHKEY);

  const state = fxa.internal.currentAccountState;
  const data = await state.getUserAccountData();

  Assert.equal(data.device.id, "newly-generated device id");
  Assert.equal(data.device.registrationVersion, DEVICE_REGISTRATION_VERSION);
});

add_task(async function test_updateDeviceRegistration_with_existing_device() {
  const deviceId = "my device id";
  const deviceName = "phil's device";

  const credentials = getTestUser("pb");
  const fxa = new MockFxAccounts({ name: deviceName });
  await fxa.internal.setSignedInUser(credentials);
  await fxa.updateUserAccountData({uid: credentials.uid, device: {
    id: deviceId,
    registrationVersion: 1 // < 42
  }});

  const spy = {
    registerDevice: { count: 0, args: [] },
    updateDevice: { count: 0, args: [] },
    getDeviceList: { count: 0, args: [] }
  };
  const client = fxa.internal.fxAccountsClient;
  client.registerDevice = function() {
    spy.registerDevice.count += 1;
    spy.registerDevice.args.push(arguments);
    return Promise.resolve({});
  };
  client.updateDevice = function() {
    spy.updateDevice.count += 1;
    spy.updateDevice.args.push(arguments);
    return Promise.resolve({
      id: deviceId,
      name: deviceName
    });
  };
  client.getDeviceList = function() {
    spy.getDeviceList.count += 1;
    spy.getDeviceList.args.push(arguments);
    return Promise.resolve([]);
  };
  await fxa.updateDeviceRegistration();

  Assert.equal(spy.registerDevice.count, 0);
  Assert.equal(spy.getDeviceList.count, 0);
  Assert.equal(spy.updateDevice.count, 1);
  Assert.equal(spy.updateDevice.args[0].length, 4);
  Assert.equal(spy.updateDevice.args[0][0], credentials.sessionToken);
  Assert.equal(spy.updateDevice.args[0][1], deviceId);
  Assert.equal(spy.updateDevice.args[0][2], deviceName);
  Assert.equal(spy.updateDevice.args[0][3].pushCallback, "http://mochi.test:8888");
  Assert.equal(spy.updateDevice.args[0][3].pushPublicKey, BOGUS_PUBLICKEY);
  Assert.equal(spy.updateDevice.args[0][3].pushAuthKey, BOGUS_AUTHKEY);

  const state = fxa.internal.currentAccountState;
  const data = await state.getUserAccountData();

  Assert.equal(data.device.id, deviceId);
  Assert.equal(data.device.registrationVersion, DEVICE_REGISTRATION_VERSION);
});

add_task(async function test_updateDeviceRegistration_with_unknown_device_error() {
  const deviceName = "foo";
  const deviceType = "bar";
  const currentDeviceId = "my device id";

  const credentials = getTestUser("baz");
  const fxa = new MockFxAccounts({ name: deviceName });
  await fxa.internal.setSignedInUser(credentials);
  await fxa.updateUserAccountData({uid: credentials.uid, device: {
    id: currentDeviceId,
    registrationVersion: 1 // < 42
  }});

  const spy = {
    registerDevice: { count: 0, args: [] },
    updateDevice: { count: 0, args: [] },
    getDeviceList: { count: 0, args: [] }
  };
  const client = fxa.internal.fxAccountsClient;
  client.registerDevice = function() {
    spy.registerDevice.count += 1;
    spy.registerDevice.args.push(arguments);
    return Promise.resolve({
      id: "a different newly-generated device id",
      createdAt: Date.now(),
      name: deviceName,
      type: deviceType
    });
  };
  client.updateDevice = function() {
    spy.updateDevice.count += 1;
    spy.updateDevice.args.push(arguments);
    return Promise.reject({
      code: 400,
      errno: ERRNO_UNKNOWN_DEVICE
    });
  };
  client.getDeviceList = function() {
    spy.getDeviceList.count += 1;
    spy.getDeviceList.args.push(arguments);
    return Promise.resolve([]);
  };

  await fxa.updateDeviceRegistration();

  Assert.equal(spy.getDeviceList.count, 0);
  Assert.equal(spy.registerDevice.count, 0);
  Assert.equal(spy.updateDevice.count, 1);
  Assert.equal(spy.updateDevice.args[0].length, 4);
  Assert.equal(spy.updateDevice.args[0][0], credentials.sessionToken);
  Assert.equal(spy.updateDevice.args[0][1], currentDeviceId);
  Assert.equal(spy.updateDevice.args[0][2], deviceName);
  Assert.equal(spy.updateDevice.args[0][3].pushCallback, "http://mochi.test:8888");
  Assert.equal(spy.updateDevice.args[0][3].pushPublicKey, BOGUS_PUBLICKEY);
  Assert.equal(spy.updateDevice.args[0][3].pushAuthKey, BOGUS_AUTHKEY);


  const state = fxa.internal.currentAccountState;
  const data = await state.getUserAccountData();

  Assert.equal(null, data.device);
});

add_task(async function test_updateDeviceRegistration_with_device_session_conflict_error() {
  const deviceName = "foo";
  const deviceType = "bar";
  const currentDeviceId = "my device id";
  const conflictingDeviceId = "conflicting device id";

  const credentials = getTestUser("baz");
  const fxa = new MockFxAccounts({ name: deviceName });
  await fxa.internal.setSignedInUser(credentials);
  await fxa.updateUserAccountData({uid: credentials.uid, device: {
    id: currentDeviceId,
    registrationVersion: 1 // < 42
  }});

  const spy = {
    registerDevice: { count: 0, args: [] },
    updateDevice: { count: 0, args: [], times: [] },
    getDeviceList: { count: 0, args: [] }
  };
  const client = fxa.internal.fxAccountsClient;
  client.registerDevice = function() {
    spy.registerDevice.count += 1;
    spy.registerDevice.args.push(arguments);
    return Promise.resolve({});
  };
  client.updateDevice = function() {
    spy.updateDevice.count += 1;
    spy.updateDevice.args.push(arguments);
    spy.updateDevice.time = Date.now();
    if (spy.updateDevice.count === 1) {
      return Promise.reject({
        code: 400,
        errno: ERRNO_DEVICE_SESSION_CONFLICT
      });
    }
    return Promise.resolve({
      id: conflictingDeviceId,
      name: deviceName
    });
  };
  client.getDeviceList = function() {
    spy.getDeviceList.count += 1;
    spy.getDeviceList.args.push(arguments);
    spy.getDeviceList.time = Date.now();
    return Promise.resolve([
      { id: "ignore", name: "ignore", type: "ignore", isCurrentDevice: false },
      { id: conflictingDeviceId, name: deviceName, type: deviceType, isCurrentDevice: true }
    ]);
  };

  await fxa.updateDeviceRegistration();

  Assert.equal(spy.registerDevice.count, 0);
  Assert.equal(spy.updateDevice.count, 1);
  Assert.equal(spy.updateDevice.args[0].length, 4);
  Assert.equal(spy.updateDevice.args[0][0], credentials.sessionToken);
  Assert.equal(spy.updateDevice.args[0][1], currentDeviceId);
  Assert.equal(spy.updateDevice.args[0][2], deviceName);
  Assert.equal(spy.updateDevice.args[0][3].pushCallback, "http://mochi.test:8888");
  Assert.equal(spy.updateDevice.args[0][3].pushPublicKey, BOGUS_PUBLICKEY);
  Assert.equal(spy.updateDevice.args[0][3].pushAuthKey, BOGUS_AUTHKEY);
  Assert.equal(spy.getDeviceList.count, 1);
  Assert.equal(spy.getDeviceList.args[0].length, 1);
  Assert.equal(spy.getDeviceList.args[0][0], credentials.sessionToken);
  Assert.ok(spy.getDeviceList.time >= spy.updateDevice.time);

  const state = fxa.internal.currentAccountState;
  const data = await state.getUserAccountData();

  Assert.equal(data.device.id, conflictingDeviceId);
  Assert.equal(data.device.registrationVersion, null);
});

add_task(async function test_updateDeviceRegistration_with_unrecoverable_error() {
  const deviceName = "foo";

  const credentials = getTestUser("baz");
  const fxa = new MockFxAccounts({ name: deviceName });
  await fxa.internal.setSignedInUser(credentials);
  await fxa.updateUserAccountData({uid: credentials.uid, device: null});

  const spy = {
    registerDevice: { count: 0, args: [] },
    updateDevice: { count: 0, args: [] },
    getDeviceList: { count: 0, args: [] }
  };
  const client = fxa.internal.fxAccountsClient;
  client.registerDevice = function() {
    spy.registerDevice.count += 1;
    spy.registerDevice.args.push(arguments);
    return Promise.reject({
      code: 400,
      errno: ERRNO_TOO_MANY_CLIENT_REQUESTS
    });
  };
  client.updateDevice = function() {
    spy.updateDevice.count += 1;
    spy.updateDevice.args.push(arguments);
    return Promise.resolve({});
  };
  client.getDeviceList = function() {
    spy.getDeviceList.count += 1;
    spy.getDeviceList.args.push(arguments);
    return Promise.resolve([]);
  };

  await fxa.updateDeviceRegistration();

  Assert.equal(spy.getDeviceList.count, 0);
  Assert.equal(spy.updateDevice.count, 0);
  Assert.equal(spy.registerDevice.count, 1);
  Assert.equal(spy.registerDevice.args[0].length, 4);

  const state = fxa.internal.currentAccountState;
  const data = await state.getUserAccountData();

  Assert.equal(null, data.device);
});

add_task(async function test_getDeviceId_with_no_device_id_invokes_device_registration() {
  const credentials = getTestUser("foo");
  credentials.verified = true;
  const fxa = new MockFxAccounts();
  await fxa.internal.setSignedInUser(credentials);
  await fxa.updateUserAccountData({uid: credentials.uid, device: null});

  const spy = { count: 0, args: [] };
  fxa.internal.currentAccountState.getUserAccountData =
    () => Promise.resolve({ email: credentials.email,
                            registrationVersion: DEVICE_REGISTRATION_VERSION });
  fxa.internal._registerOrUpdateDevice = function() {
    spy.count += 1;
    spy.args.push(arguments);
    return Promise.resolve("bar");
  };

  const result = await fxa.internal.getDeviceId();

  Assert.equal(spy.count, 1);
  Assert.equal(spy.args[0].length, 1);
  Assert.equal(spy.args[0][0].email, credentials.email);
  Assert.equal(null, spy.args[0][0].device);
  Assert.equal(result, "bar");
});

add_task(async function test_getDeviceId_with_registration_version_outdated_invokes_device_registration() {
  const credentials = getTestUser("foo");
  credentials.verified = true;
  const fxa = new MockFxAccounts();
  await fxa.internal.setSignedInUser(credentials);

  const spy = { count: 0, args: [] };
  fxa.internal.currentAccountState.getUserAccountData =
    () => Promise.resolve({ device: {id: "my id", registrationVersion: 0}});
  fxa.internal._registerOrUpdateDevice = function() {
    spy.count += 1;
    spy.args.push(arguments);
    return Promise.resolve("wibble");
  };

  const result = await fxa.internal.getDeviceId();

  Assert.equal(spy.count, 1);
  Assert.equal(spy.args[0].length, 1);
  Assert.equal(spy.args[0][0].device.id, "my id");
  Assert.equal(result, "wibble");
});

add_task(async function test_getDeviceId_with_device_id_and_uptodate_registration_version_doesnt_invoke_device_registration() {
  const credentials = getTestUser("foo");
  credentials.verified = true;
  const fxa = new MockFxAccounts();
  await fxa.internal.setSignedInUser(credentials);

  const spy = { count: 0 };
  fxa.internal.currentAccountState.getUserAccountData =
    () => Promise.resolve({ device: {id: "foo's device id", registrationVersion: DEVICE_REGISTRATION_VERSION}});
  fxa.internal._registerOrUpdateDevice = function() {
    spy.count += 1;
    return Promise.resolve("bar");
  };

  const result = await fxa.internal.getDeviceId();

  Assert.equal(spy.count, 0);
  Assert.equal(result, "foo's device id");
});

add_task(async function test_getDeviceId_with_device_id_and_with_no_registration_version_invokes_device_registration() {
  const credentials = getTestUser("foo");
  credentials.verified = true;
  const fxa = new MockFxAccounts();
  await fxa.internal.setSignedInUser(credentials);

  const spy = { count: 0, args: [] };
  fxa.internal.currentAccountState.getUserAccountData =
    () => Promise.resolve({ device: {id: "wibble"}});
  fxa.internal._registerOrUpdateDevice = function() {
    spy.count += 1;
    spy.args.push(arguments);
    return Promise.resolve("wibble");
  };

  const result = await fxa.internal.getDeviceId();

  Assert.equal(spy.count, 1);
  Assert.equal(spy.args[0].length, 1);
  Assert.equal(spy.args[0][0].device.id, "wibble");
  Assert.equal(result, "wibble");
});

add_task(async function test_migration_toplevel_deviceId_to_device() {
  const credentials = getTestUser("foo");
  credentials.verified = true;
  const fxa = new MockFxAccounts();
  await fxa.internal.setSignedInUser(credentials);
  await fxa.updateUserAccountData({uid: credentials.uid, device: null});
  // Can't use updateUserAccountData here since it won't accept deprecated fields!
  const accountData = fxa.internal.currentAccountState.storageManager.accountData;
  accountData.deviceId = "mydeviceid";
  accountData.deviceRegistrationVersion = DEVICE_REGISTRATION_VERSION;

  const result = await fxa.internal.getDeviceId();
  Assert.equal(result, "mydeviceid");

  const state = fxa.internal.currentAccountState;
  const data = await state.getUserAccountData();
  Assert.deepEqual(data.device, {id: "mydeviceid", registrationVersion: DEVICE_REGISTRATION_VERSION});
  Assert.ok(!data.deviceId);
  Assert.ok(!data.deviceRegistrationVersion);
});

function expandHex(two_hex) {
  // Return a 64-character hex string, encoding 32 identical bytes.
  let eight_hex = two_hex + two_hex + two_hex + two_hex;
  let thirtytwo_hex = eight_hex + eight_hex + eight_hex + eight_hex;
  return thirtytwo_hex + thirtytwo_hex;
}

function expandBytes(two_hex) {
  return CommonUtils.hexToBytes(expandHex(two_hex));
}

function getTestUser(name) {
  return {
    email: name + "@example.com",
    uid: "1ad7f502-4cc7-4ec1-a209-071fd2fae348",
    sessionToken: name + "'s session token",
    keyFetchToken: name + "'s keyfetch token",
    unwrapBKey: expandHex("44"),
    verified: false
  };
}

