88 lines
3.3 KiB
TypeScript
88 lines
3.3 KiB
TypeScript
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// (C) Copyright 2015 Moodle Pty Ltd.
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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 { CoreSites } from '@services/sites';
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import { makeSingleton } from '@singletons';
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import {
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AddonNotifications,
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AddonNotificationsAnyNotification,
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AddonNotificationsGetNotificationsOptions,
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AddonNotificationsProvider,
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} 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({ providedIn: 'root' })
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export class AddonNotificationsHelperProvider {
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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 notifications Current list of loaded notifications. It's used to calculate the offset.
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* @param options Other options.
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* @return Promise resolved with notifications and if can load more.
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*/
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async getNotifications(
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notifications: AddonNotificationsAnyNotification[],
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options?: AddonNotificationsGetNotificationsOptions,
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): Promise<{notifications: AddonNotificationsAnyNotification[]; canLoadMore: boolean}> {
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notifications = notifications || [];
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options = options || {};
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options.limit = options.limit || AddonNotificationsProvider.LIST_LIMIT;
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options.siteId = options.siteId || CoreSites.instance.getCurrentSiteId();
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const available = await AddonNotifications.instance.isPopupAvailable(options.siteId);
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if (available) {
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return AddonNotifications.instance.getPopupNotifications(notifications.length, options);
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}
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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) => total + (current.read ? 0 : 1), 0);
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const unread = await AddonNotifications.instance.getUnreadNotifications(unreadFrom, options);
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let newNotifications = unread;
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if (unread.length < options.limit) {
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// Limit not reached. Get read notifications until reach the limit.
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const readLimit = options.limit - unread.length;
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const readFrom = notifications.length - unreadFrom;
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const readOptions = Object.assign({}, options, { limit: readLimit });
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try {
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const read = await AddonNotifications.instance.getReadNotifications(readFrom, readOptions);
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newNotifications = unread.concat(read);
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} catch (error) {
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if (unread.length <= 0) {
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throw error;
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}
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}
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}
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return {
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notifications: newNotifications,
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canLoadMore: notifications.length >= options.limit,
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};
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}
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}
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export class AddonNotificationsHelper extends makeSingleton(AddonNotificationsHelperProvider) {}
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