MOBILE-2701 resource: Always show refresh for external files

src/addon/mod/resource/providers/prefetch-handler.ts

@@ -23,6 +23,7 @@ import { CoreCourseProvider } from '@core/course/providers/course';
 import { CoreCourseResourcePrefetchHandlerBase } from '@core/course/classes/resource-prefetch-handler';
 import { AddonModResourceProvider } from './resource';
 import { AddonModResourceHelperProvider } from './helper';
+import { CoreConstants } from '@core/constants';
 
 /**
  * Handler to prefetch resources.
@@ -41,6 +42,26 @@ export class AddonModResourcePrefetchHandler extends CoreCourseResourcePrefetchH
         super(translate, appProvider, utils, courseProvider, filepoolProvider, sitesProvider, domUtils);
     }
 
+    /**
+     * Return the status to show based on current status.
+     *
+     * @param {any} module Module.
+     * @param {string} status The current status.
+     * @param {boolean} canCheck Whether the site allows checking for updates.
+     * @return {string} Status to display.
+     */
+    determineStatus(module: any, status: string, canCheck: boolean): string {
+        if (status == CoreConstants.DOWNLOADED && module && module.contents) {
+            // If the first file is an external file, always display the module as outdated.
+            const mainFile = module.contents[0];
+            if (mainFile && mainFile.isexternalfile) {
+                return CoreConstants.OUTDATED;
+            }
+        }
+
+        return status;
+    }
+
     /**
      * Download or prefetch the content.
      *

src/providers/filepool.ts

@@ -2501,7 +2501,7 @@ export class CoreFilepoolProvider {
             // File not in pool.
         }).then((entry: CoreFilepoolFileEntry) => {
 
-            if (entry && !this.isFileOutdated(entry, options.revision, options.timemodified)) {
+            if (entry && !options.isexternalfile && !this.isFileOutdated(entry, options.revision, options.timemodified)) {
                 // We have the file, it is not stale, we can update links and remove from queue.
                 this.logger.debug('Queued file already in store, ignoring...');
                 this.addFileLinks(siteId, fileId, links).catch(() => {