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gaia/apps/calendar/js/backend/calendar_service.js

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+define(function(require, exports) {
+'use strict';
+
+var Db = require('db');
+var co = require('ext/co');
+var core = require('core');
+//var object = require('common/object');
+var threads = require('ext/threads');
+
+var service = threads.service('calendar');
+var loadDb;
+
+core.db = new Db('b2g-calendar');
+core.providerFactory = require('provider/factory');
+core.storeFactory = require('store/factory');
+
+function start() {
+  if (loadDb != null) {
+    return loadDb;
+  }
+
+  loadDb = core.db.load();
+  return loadDb;
+}
+
+function method(endpoint, handler) {
+  service.method(endpoint, (...args) => {
+    return co(function *() {
+      yield start();
+      return handler.apply(null, args);
+    });
+  });
+}
+
+function stream(endpoint, handler) {
+  service.stream(endpoint, function *() {
+    var args = Array.slice(arguments);
+    yield start();
+    handler.apply(null, args);
+  });
+}
+
+function echo() {
+  return Array.slice(arguments);
+}
+
+/**
+ * This will not work until the sync controller
+ * (1) is not a class anymore
+ * (2) doesn't need the app ns/object
+ */
+function saveAccount(details) {
+  return co(function *() {
+    var store = core.storeFactory.get('Account');
+    var account;
+    try {
+      account = yield store.verifyAndPersist(details);
+    } catch (error) {
+      return Promise.reject(error);
+    }
+
+    yield syncAccount(account);
+    return account;
+  });
+}
+
+function removeAccount(id) {
+  return co(function *() {
+    var store = core.storeFactory.get('Account');
+    yield store.remove(id);
+  });
+}
+
+/**
+ * This will not work until the sync controller
+ * (1) is not a class anymore
+ * (2) doesn't need the app ns/object
+ */
+function syncAccount(account) {
+  console.log('syncAccount', account);
+  /*
+  return co(function *() {
+    var store = core.storeFactory.get('Calendar');
+    var calendars;
+    try {
+      calendars = yield store.remotesByAccount(account._id);
+    } catch (error) {
+      return Promise.reject(error);
+    }
+
+    var syncCalendar = syncController.calendar.bind(null, account);
+    yield Promise.all(object.map(calendars, syncCalendar));
+  });
+  */
+}
+
+function saveEvent(exists, event) {
+  return co(function *() {
+    var store = core.storeFactory.get('Event');
+    var provider = yield store.providerFor(event);
+    var capabilities;
+    try {
+      capabilities = yield provider.eventCapabilities(event.data);
+    } catch (error) {
+      return Promise.reject(error);
+    }
+
+    var capability = exists ? 'canUpdate' : 'canCreate';
+    if (!capabilities[capability]) {
+      return Promise.reject(new Error('User not allowed to perform operation'));
+    }
+
+    var method = exists ? 'updateEvent' : 'createEvent';
+    try {
+      yield provider[method](event.data);
+    } catch (error) {
+      return Promise.reject(error);
+    }
+  });
+}
+
+function removeEvent(event) {
+  return co(function *() {
+    var store = core.storeFactory.get('Event');
+    var provider = yield store.providerFor(event);
+    var capabilities;
+    try {
+      yield provider.eventCapabilities(event.data);
+    } catch (error) {
+      return Promise.reject(error);
+    }
+
+    if (!capabilities.canDelete) {
+      return Promise.reject(new Error('User not allowed to perform operation'));
+    }
+
+    yield provider.deleteEvent(event.data);
+  });
+}
+
+function setSetting(key, value) {
+  var store = core.storeFactory.get('Setting');
+  return store.set(key, value);
+}
+
+function listAccounts(stream) {
+  // TODO
+  console.log('accounts/list', stream);
+}
+
+function getAccount(stream, id) {
+  // TODO
+  console.log('accounts/get', stream, id);
+}
+
+function listCalendars(stream) {
+  // TODO
+  console.log('calendars/list', stream);
+}
+
+function getEvent(stream, id) {
+  // TODO
+  console.log('events/get', stream, id);
+}
+
+function listBusytimes(stream, day) {
+  // TODO
+  console.log('busytimes/list', stream, day);
+}
+
+function getSetting(stream, key) {
+  // TODO
+  console.log('settings/set', stream, key);
+}
+
+method('echo', echo);
+method('accounts/create', saveAccount);
+method('accounts/update', saveAccount);
+method('accounts/remove', removeAccount);
+method('accounts/sync', syncAccount);
+method('events/create', saveEvent.bind(null, true));
+method('events/update', saveEvent.bind(null, true));
+method('events/remove', removeEvent);
+method('settings/set', setSetting);
+stream('accounts/list', listAccounts);
+stream('accounts/get', getAccount);
+stream('calendars/list', listCalendars);
+stream('events/get', getEvent);
+stream('busytimes/list', listBusytimes);
+stream('settings/get', getSetting);
+
+exports.start = start;
+
+});