MOBILE-3565 services: Add site info cron handler

src/app/services/handlers/site-info-cron-handler.ts

@@ -0,0 +1,62 @@
+// (C) Copyright 2015 Moodle Pty Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import { Injectable } from '@angular/core';
+import { CoreCronHandler } from '@services/cron';
+import { CoreSites } from '@services/sites';
+
+/**
+ * Cron handler to update site info every certain time.
+ */
+@Injectable()
+export class CoreSiteInfoCronHandler implements CoreCronHandler {
+
+    name = 'CoreSiteInfoCronHandler';
+
+    /**
+     * Execute the process.
+     * Receives the ID of the site affected, undefined for all sites.
+     *
+     * @param siteId ID of the site affected, undefined for all sites.
+     * @return Promise resolved when done, rejected on failure.
+     */
+    async execute(siteId?: string): Promise<void> {
+        if (!siteId) {
+            const siteIds = await CoreSites.instance.getSitesIds();
+
+            await Promise.all(siteIds.map((siteId) => CoreSites.instance.updateSiteInfo(siteId)));
+        } else {
+            await CoreSites.instance.updateSiteInfo(siteId);
+        }
+    }
+
+    /**
+     * Returns handler's interval in milliseconds. Defaults to CoreCronDelegate.DEFAULT_INTERVAL.
+     *
+     * @return Interval time (in milliseconds).
+     */
+    getInterval(): number {
+        return 10800000; // 3 hours.
+    }
+
+    /**
+     * Check whether it's a synchronization process or not. True if not defined.
+     *
+     * @return Whether it's a synchronization process or not.
+     */
+    isSync(): boolean {
+        return false;
+    }
+
+}