MOBILE-2609 assign: Add file support in feedback comments

src/addon/mod/assign/feedback/comments/component/comments.ts

@@ -85,7 +85,7 @@ export class AddonModAssignFeedbackCommentsComponent extends AddonModAssignFeedb
 
             // Update the text and save it as draft.
             this.isSent = false;
-            this.text = text;
+            this.text = this.replacePluginfileUrls(text);
             this.feedbackDelegate.saveFeedbackDraft(this.assign.id, this.userId, this.plugin, {
                 text: text,
                 format: 1
@@ -106,7 +106,7 @@ export class AddonModAssignFeedbackCommentsComponent extends AddonModAssignFeedb
             if (draft) {
                 this.isSent = false;
 
-                return draft.text;
+                return this.replacePluginfileUrls(draft.text);
             } else {
                 // There is no draft saved. Check if we have anything offline.
                 return this.assignOfflineProvider.getSubmissionGrade(this.assign.id, this.userId).catch(() => {
@@ -118,7 +118,7 @@ export class AddonModAssignFeedbackCommentsComponent extends AddonModAssignFeedb
                         this.feedbackDelegate.saveFeedbackDraft(this.assign.id, this.userId, this.plugin,
                                 offlineData.plugindata.assignfeedbackcomments_editor);
 
-                        return offlineData.plugindata.assignfeedbackcomments_editor.text;
+                        return this.replacePluginfileUrls(offlineData.plugindata.assignfeedbackcomments_editor.text);
                     }
 
                     // No offline data found, return online text.
@@ -129,4 +129,16 @@ export class AddonModAssignFeedbackCommentsComponent extends AddonModAssignFeedb
             }
         });
     }
+
+    /**
+     * Replace @@PLUGINFILE@@ wildcards with the real URL of embedded files.
+     *
+     * @param {string} Text to treat.
+     * @return {string} Treated text.
+     */
+    replacePluginfileUrls(text: string): string {
+        const files = this.plugin.fileareas && this.plugin.fileareas[0] && this.plugin.fileareas[0].files;
+
+        return this.textUtils.replacePluginfileUrls(text, files || []);
+    }
 }

src/addon/mod/assign/feedback/comments/providers/handler.ts

@@ -91,6 +91,20 @@ export class AddonModAssignFeedbackCommentsHandler implements AddonModAssignFeed
         return siteId + '#' + assignId + '#' + userId;
     }
 
+    /**
+     * Get files used by this plugin.
+     * The files returned by this function will be prefetched when the user prefetches the assign.
+     *
+     * @param {any} assign The assignment.
+     * @param {any} submission The submission.
+     * @param {any} plugin The plugin object.
+     * @param {string} [siteId] Site ID. If not defined, current site.
+     * @return {any[]|Promise<any[]>} The files (or promise resolved with the files).
+     */
+    getPluginFiles(assign: any, submission: any, plugin: any, siteId?: string): any[] | Promise<any[]> {
+        return this.assignProvider.getSubmissionPluginAttachments(plugin);
+    }
+
     /**
      * Get the text to submit.
      *