forked from EVOgeek/Vmeda.Online
94 lines
4.3 KiB
TypeScript
94 lines
4.3 KiB
TypeScript
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// (C) Copyright 2015 Martin Dougiamas
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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import { Injectable } from '@angular/core';
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import { CoreSitesProvider } from '@providers/sites';
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import { AddonNotificationsProvider } from './notifications';
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/**
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* Service that provides some helper functions for notifications.
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*/
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@Injectable()
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export class AddonNotificationsHelperProvider {
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constructor(private notificationsProvider: AddonNotificationsProvider, private sitesProvider: CoreSitesProvider) {
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}
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/**
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* Get some notifications. It will try to use the new WS if available.
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*
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* @param {any[]} notifications Current list of loaded notifications. It's used to calculate the offset.
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* @param {number} [limit] Number of notifications to get. Defaults to LIST_LIMIT.
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* @param {boolean} [toDisplay=true] True if notifications will be displayed to the user, either in view or in a notification.
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* @param {boolean} [forceCache] True if it should return cached data. Has priority over ignoreCache.
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* @param {boolean} [ignoreCache] True if it should ignore cached data (it will always fail in offline or server down).
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* @param {string} [siteId] Site ID. If not defined, use current site.
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* @return {Promise<{notifications: any[], canLoadMore: boolean}>} Promise resolved with notifications and if can load more.
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*/
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getNotifications(notifications: any[], limit?: number, toDisplay: boolean = true, forceCache?: boolean, ignoreCache?: boolean,
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siteId?: string): Promise<{notifications: any[], canLoadMore: boolean}> {
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notifications = notifications || [];
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limit = limit || AddonNotificationsProvider.LIST_LIMIT;
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siteId = siteId || this.sitesProvider.getCurrentSiteId();
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return this.notificationsProvider.isPopupAvailable(siteId).then((available) => {
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if (available) {
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return this.notificationsProvider.getPopupNotifications(notifications.length, limit, toDisplay, forceCache,
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ignoreCache, siteId);
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} else {
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// Fallback to get_messages. We need 2 calls, one for read and the other one for unread.
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const unreadFrom = notifications.reduce((total, current) => {
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return total + (current.read ? 0 : 1);
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}, 0);
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return this.notificationsProvider.getUnreadNotifications(unreadFrom, limit, toDisplay, forceCache, ignoreCache,
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siteId).then((unread) => {
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let promise;
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if (unread.length < limit) {
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// Limit not reached. Get read notifications until reach the limit.
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const readLimit = limit - unread.length,
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readFrom = notifications.length - unreadFrom;
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promise = this.notificationsProvider.getReadNotifications(readFrom, readLimit, toDisplay, forceCache,
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ignoreCache, siteId).then((read) => {
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return unread.concat(read);
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}).catch((error): any => {
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if (unread.length > 0) {
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// We were able to get some unread, return only the unread ones.
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return unread;
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}
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return Promise.reject(error);
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});
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} else {
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promise = Promise.resolve(unread);
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}
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return promise.then((notifications) => {
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return {
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notifications: notifications,
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canLoadMore: notifications.length >= limit
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};
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});
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});
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}
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});
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}
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}
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