MOBILE-3312 core: Update site info every certain time

src/app/app.module.ts

@@ -61,6 +61,9 @@ import { CoreSyncProvider } from '@providers/sync';
 import { CoreFileHelperProvider } from '@providers/file-helper';
 import { CoreCustomURLSchemesProvider } from '@providers/urlschemes';
 
+// Handlers.
+import { CoreSiteInfoCronHandler } from '@providers/handlers/site-info-cron-handler';
+
 // Core modules.
 import { CoreComponentsModule } from '@components/components.module';
 import { CoreEmulatorModule } from '@core/emulator/emulator.module';
@@ -329,6 +332,7 @@ export const WP_PROVIDER: any = null;
         CoreSyncProvider,
         CoreFileHelperProvider,
         CoreCustomURLSchemesProvider,
+        CoreSiteInfoCronHandler,
         {
             provide: HTTP_INTERCEPTORS,
             useClass: CoreInterceptor,
@@ -341,8 +345,17 @@ export const WP_PROVIDER: any = null;
     ]
 })
 export class AppModule {
-    constructor(platform: Platform, initDelegate: CoreInitDelegate, updateManager: CoreUpdateManagerProvider, config: Config,
-            sitesProvider: CoreSitesProvider, fileProvider: CoreFileProvider, private eventsProvider: CoreEventsProvider) {
+    constructor(
+            platform: Platform,
+            initDelegate: CoreInitDelegate,
+            updateManager: CoreUpdateManagerProvider,
+            config: Config,
+            sitesProvider: CoreSitesProvider,
+            fileProvider: CoreFileProvider,
+            private eventsProvider: CoreEventsProvider,
+            cronDelegate: CoreCronDelegate,
+            siteInfoCronHandler: CoreSiteInfoCronHandler,
+            ) {
         // Register a handler for platform ready.
         initDelegate.registerProcess({
             name: 'CorePlatformReady',
@@ -373,6 +386,9 @@ export class AppModule {
         // Execute the init processes.
         initDelegate.executeInitProcesses();
 
+        // Register handlers.
+        cronDelegate.register(siteInfoCronHandler);
+
         // Set transition animation.
         config.setTransition('core-page-transition', CorePageTransition);
         config.setTransition('core-modal-lateral-transition', CoreModalLateralTransition);

src/providers/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 '@providers/cron';
+import { CoreSitesProvider } from '@providers/sites';
+
+/**
+ * Cron handler to update site info every certain time.
+ */
+@Injectable()
+export class CoreSiteInfoCronHandler implements CoreCronHandler {
+    name = 'CoreSiteInfoCronHandler';
+
+    constructor(protected sitesProvider: CoreSitesProvider) {}
+
+    /**
+     * 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 if failure.
+     */
+    async execute(siteId?: string): Promise<any> {
+        if (!siteId) {
+            const siteIds = await this.sitesProvider.getSitesIds();
+
+            return Promise.all(siteIds.map((siteId) => this.sitesProvider.updateSiteInfo(siteId)));
+        } else {
+            return this.sitesProvider.updateSiteInfo(siteId);
+        }
+    }
+
+    /**
+     * Returns handler's interval in milliseconds. Defaults to CoreCronDelegate.DEFAULT_INTERVAL.
+     *
+     * @return Interval time (in milliseconds).
+     */
+    getInterval(): number {
+        return 3600000; // 1 hour.
+    }
+
+    /**
+     * 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;
+    }
+}