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

'use strict';

const {PushDB, PushService, PushServiceWebSocket} = serviceExports;

const userAgentID = '2c43af06-ab6e-476a-adc4-16cbda54fb89';

let db;

function run_test() {
  do_get_profile();
  setPrefs({
    userAgentID,
  });

  db = PushServiceWebSocket.newPushDB();
  do_register_cleanup(() => {return db.drop().then(_ => db.close());});

  run_next_test();
}

let unregisterDefers = {};

function putRecord(channelID, scope, quota) {
  return db.put({
    channelID: channelID,
    pushEndpoint: 'https://example.org/push/' + channelID,
    scope: scope,
    pushCount: 0,
    lastPush: 0,
    version: null,
    originAttributes: '',
    quota: quota,
    systemRecord: quota == Infinity,
  });
}

function makePushPermission(url, capability) {
  return {
    QueryInterface: XPCOMUtils.generateQI([Ci.nsIPermission]),
    capability: Ci.nsIPermissionManager[capability],
    expireTime: 0,
    expireType: Ci.nsIPermissionManager.EXPIRE_NEVER,
    principal: Services.scriptSecurityManager.getCodebasePrincipal(
      Services.io.newURI(url, null, null)
    ),
    type: 'desktop-notification',
  };
}

function promiseObserverNotifications(topic, count) {
  let notifiedScopes = [];
  let subChangePromise = promiseObserverNotification(topic, (subject, data) => {
    notifiedScopes.push(data);
    return notifiedScopes.length == count;
  });
  return subChangePromise.then(_ => notifiedScopes.sort());
}

function promiseSubscriptionChanges(count) {
  return promiseObserverNotifications(
    PushServiceComponent.subscriptionChangeTopic, count);
}

function promiseSubscriptionModifications(count) {
  return promiseObserverNotifications(
    PushServiceComponent.subscriptionModifiedTopic, count);
}

function allExpired(...keyIDs) {
  return Promise.all(keyIDs.map(
    keyID => db.getByKeyID(keyID)
  )).then(records =>
    records.every(record => record.isExpired())
  );
}

add_task(function* setUp() {
  // Active registration; quota should be reset to 16. Since the quota isn't
  // exposed to content, we shouldn't receive a subscription change event.
  yield putRecord('active-allow', 'https://example.info/page/1', 8);

  // Expired registration; should be dropped.
  yield putRecord('expired-allow', 'https://example.info/page/2', 0);

  // Active registration; should be expired when we change the permission
  // to "deny".
  yield putRecord('active-deny-changed', 'https://example.xyz/page/1', 16);

  // Two active registrations for a visited site. These will expire when we
  // add a "deny" permission.
  yield putRecord('active-deny-added-1', 'https://example.net/ham', 16);
  yield putRecord('active-deny-added-2', 'https://example.net/green', 8);

  // An already-expired registration for a visited site. We shouldn't send an
  // `unregister` request for this one, but still receive an observer
  // notification when we restore permissions.
  yield putRecord('expired-deny-added', 'https://example.net/eggs', 0);

  // A registration that should not be affected by permission list changes
  // because its quota is set to `Infinity`.
  yield putRecord('never-expires', 'app://chrome/only', Infinity);

  // A registration that should be dropped when we clear the permission
  // list.
  yield putRecord('drop-on-clear', 'https://example.edu/lonely', 16);

  let handshakeDone;
  let handshakePromise = new Promise(resolve => handshakeDone = resolve);
  PushService.init({
    serverURI: 'wss://push.example.org/',
    db,
    makeWebSocket(uri) {
      return new MockWebSocket(uri, {
        onHello(request) {
          this.serverSendMsg(JSON.stringify({
            messageType: 'hello',
            status: 200,
            uaid: userAgentID,
          }));
          handshakeDone();
        },
        onUnregister(request) {
          let resolve = unregisterDefers[request.channelID];
          equal(typeof resolve, 'function',
            'Dropped unexpected channel ID ' + request.channelID);
          delete unregisterDefers[request.channelID];
          equal(request.code, 202,
            'Expected permission revoked unregister reason');
          resolve();
        },
        onACK(request) {},
      });
    }
  });
  yield handshakePromise;
});

add_task(function* test_permissions_allow_added() {
  let subChangePromise = promiseSubscriptionChanges(1);

  yield PushService._onPermissionChange(
    makePushPermission('https://example.info', 'ALLOW_ACTION'),
    'added'
  );
  let notifiedScopes = yield subChangePromise;

  deepEqual(notifiedScopes, [
    'https://example.info/page/2',
  ], 'Wrong scopes after adding allow');

  let record = yield db.getByKeyID('active-allow');
  equal(record.quota, 16,
    'Should reset quota for active records after adding allow');

  record = yield db.getByKeyID('expired-allow');
  ok(!record, 'Should drop expired records after adding allow');
});

add_task(function* test_permissions_allow_deleted() {
  let subModifiedPromise = promiseSubscriptionModifications(1);

  let unregisterPromise = new Promise(resolve => unregisterDefers[
    'active-allow'] = resolve);

  yield PushService._onPermissionChange(
    makePushPermission('https://example.info', 'ALLOW_ACTION'),
    'deleted'
  );

  yield unregisterPromise;

  let notifiedScopes = yield subModifiedPromise;
  deepEqual(notifiedScopes, [
    'https://example.info/page/1',
  ], 'Wrong scopes modified after deleting allow');

  let record = yield db.getByKeyID('active-allow');
  ok(record.isExpired(),
    'Should expire active record after deleting allow');
});

add_task(function* test_permissions_deny_added() {
  let subModifiedPromise = promiseSubscriptionModifications(2);

  let unregisterPromise = Promise.all([
    new Promise(resolve => unregisterDefers[
      'active-deny-added-1'] = resolve),
    new Promise(resolve => unregisterDefers[
      'active-deny-added-2'] = resolve),
  ]);

  yield PushService._onPermissionChange(
    makePushPermission('https://example.net', 'DENY_ACTION'),
    'added'
  );
  yield unregisterPromise;

  let notifiedScopes = yield subModifiedPromise;
  deepEqual(notifiedScopes, [
    'https://example.net/green',
    'https://example.net/ham',
  ], 'Wrong scopes modified after adding deny');

  let isExpired = yield allExpired(
    'active-deny-added-1',
    'expired-deny-added'
  );
  ok(isExpired, 'Should expire all registrations after adding deny');
});

add_task(function* test_permissions_deny_deleted() {
  yield PushService._onPermissionChange(
    makePushPermission('https://example.net', 'DENY_ACTION'),
    'deleted'
  );

  let isExpired = yield allExpired(
    'active-deny-added-1',
    'expired-deny-added'
  );
  ok(isExpired, 'Should retain expired registrations after deleting deny');
});

add_task(function* test_permissions_allow_changed() {
  let subChangePromise = promiseSubscriptionChanges(3);

  yield PushService._onPermissionChange(
    makePushPermission('https://example.net', 'ALLOW_ACTION'),
    'changed'
  );

  let notifiedScopes = yield subChangePromise;

  deepEqual(notifiedScopes, [
    'https://example.net/eggs',
    'https://example.net/green',
    'https://example.net/ham'
  ], 'Wrong scopes after changing to allow');

  let droppedRecords = yield Promise.all([
    db.getByKeyID('active-deny-added-1'),
    db.getByKeyID('active-deny-added-2'),
    db.getByKeyID('expired-deny-added'),
  ]);
  ok(!droppedRecords.some(Boolean),
    'Should drop all expired registrations after changing to allow');
});

add_task(function* test_permissions_deny_changed() {
  let subModifiedPromise = promiseSubscriptionModifications(1);

  let unregisterPromise = new Promise(resolve => unregisterDefers[
    'active-deny-changed'] = resolve);

  yield PushService._onPermissionChange(
    makePushPermission('https://example.xyz', 'DENY_ACTION'),
    'changed'
  );

  yield unregisterPromise;

  let notifiedScopes = yield subModifiedPromise;
  deepEqual(notifiedScopes, [
    'https://example.xyz/page/1',
  ], 'Wrong scopes modified after changing to deny');

  let record = yield db.getByKeyID('active-deny-changed');
  ok(record.isExpired(),
    'Should expire active record after changing to deny');
});

add_task(function* test_permissions_clear() {
  let subModifiedPromise = promiseSubscriptionModifications(3);

  let records = yield db.getAllKeyIDs();
  deepEqual(records.map(record => record.keyID).sort(), [
    'active-allow',
    'active-deny-changed',
    'drop-on-clear',
    'never-expires',
  ], 'Wrong records in database before clearing');

  let unregisterPromise = new Promise(resolve => unregisterDefers[
      'drop-on-clear'] = resolve);

  yield PushService._onPermissionChange(null, 'cleared');

  yield unregisterPromise;

  let notifiedScopes = yield subModifiedPromise;
  deepEqual(notifiedScopes, [
    'https://example.edu/lonely',
    'https://example.info/page/1',
    'https://example.xyz/page/1',
  ], 'Wrong scopes modified after clearing registrations');

  records = yield db.getAllKeyIDs();
  deepEqual(records.map(record => record.keyID).sort(), [
    'never-expires',
  ], 'Unrestricted registrations should not be dropped');
});
