From cda9e93255fa4d5108246e93ecc74a9e695ab4d2 Mon Sep 17 00:00:00 2001
From: Dani Palou <dani@moodle.com>
Date: Wed, 28 Apr 2021 15:39:56 +0200
Subject: [PATCH] MOBILE-3732 essay: Display plagiarism information

---
 .../essay/component/addon-qtype-essay.html    | 11 ++++-
 src/core/components/files/core-files.html     |  9 ++++-
 src/core/components/files/files.ts            |  1 +
 .../classes/base-question-component.ts        | 40 +++++++++++++++++++
 4 files changed, 59 insertions(+), 2 deletions(-)

diff --git a/src/addons/qtype/essay/component/addon-qtype-essay.html b/src/addons/qtype/essay/component/addon-qtype-essay.html
index 85cf617cc..829c6fdc5 100644
--- a/src/addons/qtype/essay/component/addon-qtype-essay.html
+++ b/src/addons/qtype/essay/component/addon-qtype-essay.html
@@ -79,9 +79,18 @@
             </ion-label>
         </ion-item>
 
+        <!-- Answer plagiarism. -->
+        <ion-item class="ion-text-wrap" *ngIf="essayQuestion.answerPlagiarism">
+            <ion-label>
+                <core-format-text [component]="component" [componentId]="componentId" [text]="essayQuestion.answerPlagiarism"
+                    [contextLevel]="contextLevel" [contextInstanceId]="contextInstanceId" [courseId]="courseId">
+                </core-format-text>
+            </ion-label>
+        </ion-item>
+
         <!-- List of attachments when reviewing. -->
         <core-files *ngIf="essayQuestion.attachments" [files]="essayQuestion.attachments" [component]="component"
-            [componentId]="componentId">
+            [componentId]="componentId" [extraHtml]="essayQuestion.attachmentsPlagiarisms">
         </core-files>
     </ng-container>
 </ion-list>
diff --git a/src/core/components/files/core-files.html b/src/core/components/files/core-files.html
index d16b3f24c..be8580a72 100644
--- a/src/core/components/files/core-files.html
+++ b/src/core/components/files/core-files.html
@@ -1,7 +1,7 @@
 <ng-container *ngIf="showInline && contentText">
     <core-format-text [text]="contentText" [filter]="false"></core-format-text>
 </ng-container>
-<ng-container *ngFor="let file of files">
+<ng-container *ngFor="let file of files; let i = index">
     <!-- Files already attached to the filearea. -->
     <core-file *ngIf="!file.name && !file.embedType" [file]="file" [component]="component" [componentId]="componentId"
         [alwaysDownload]="alwaysDownload" [canDownload]="canDownload" [showSize]="showSize" [showTime]="showTime">
@@ -9,4 +9,11 @@
 
     <!-- Files stored in offline to be sent later. -->
     <core-local-file *ngIf="file.name && !file.embedType" [file]="file"></core-local-file>
+
+    <ion-item class="ion-text-wrap" *ngIf="extraHtml && extraHtml[i]">
+        <ion-label>
+            <core-format-text [component]="component" [componentId]="componentId" [text]="extraHtml[i]">
+            </core-format-text>
+        </ion-label>
+    </ion-item>
 </ng-container>
diff --git a/src/core/components/files/files.ts b/src/core/components/files/files.ts
index b17358e65..a17b1587e 100644
--- a/src/core/components/files/files.ts
+++ b/src/core/components/files/files.ts
@@ -38,6 +38,7 @@ export class CoreFilesComponent implements OnInit, DoCheck {
     @Input() showSize?: boolean | string = true; // Whether show filesize.
     @Input() showTime?: boolean | string = true; // Whether show file time modified.
     @Input() showInline = false; // If true, it will reorder and try to show inline files first.
+    @Input() extraHtml?: string[]; // Extra HTML for each attachment. Each HTML should be at the same position as the attachment.
 
     contentText?: string;
 
diff --git a/src/core/features/question/classes/base-question-component.ts b/src/core/features/question/classes/base-question-component.ts
index 7be8ed33f..dcb5f9458 100644
--- a/src/core/features/question/classes/base-question-component.ts
+++ b/src/core/features/question/classes/base-question-component.ts
@@ -13,6 +13,7 @@
 // limitations under the License.
 
 import { Input, Output, EventEmitter, Component, Optional, Inject, ElementRef } from '@angular/core';
+import { CoreFileHelper } from '@services/file-helper';
 
 import { CoreSites } from '@services/sites';
 import { CoreDomUtils } from '@services/utils/dom';
@@ -274,6 +275,9 @@ export class CoreQuestionBaseComponent {
                 );
             }
 
+            // Treat plagiarism.
+            this.handleEssayPlagiarism(questionEl);
+
             return questionEl;
         }
 
@@ -353,6 +357,40 @@ export class CoreQuestionBaseComponent {
         return questionEl;
     }
 
+    /**
+     * Handle plagiarism in an essay question.
+     *
+     * @param questionEl Element with the question html.
+     */
+    protected handleEssayPlagiarism(questionEl: HTMLElement): void {
+        const question = <AddonModQuizEssayQuestion> this.question!;
+        const answerPlagiarism = questionEl.querySelector<HTMLSpanElement>('.answer .core_plagiarism_links');
+        if (answerPlagiarism) {
+            question.answerPlagiarism = answerPlagiarism.innerHTML;
+        }
+
+        if (!question.attachments?.length) {
+            return;
+        }
+
+        const attachmentsPlagiarisms = questionEl.querySelectorAll<HTMLSpanElement>('.attachments .core_plagiarism_links');
+        question.attachmentsPlagiarisms = [];
+
+        Array.from(attachmentsPlagiarisms).forEach((plagiarism) => {
+            // Search the URL of the attachment it affects.
+            const attachmentUrl = plagiarism.parentElement?.querySelector('a')?.href;
+            if (!attachmentUrl) {
+                return;
+            }
+
+            const position = question.attachments!.findIndex((file) => CoreFileHelper.getFileUrl(file) == attachmentUrl);
+
+            if (position >= 0) {
+                question.attachmentsPlagiarisms![position] = plagiarism.innerHTML;
+            }
+        });
+    }
+
     /**
      * Initialize a question component that uses the original question text with some basic treatment.
      *
@@ -724,6 +762,8 @@ export type AddonModQuizEssayQuestion = AddonModQuizQuestionBasicData & {
     attachmentsMaxFiles?: number; // Max number of attachments.
     attachmentsAcceptedTypes?: string; // Attachments accepted file types.
     attachmentsMaxBytes?: number; // Max bytes for attachments.
+    answerPlagiarism?: string; // Plagiarism HTML for the answer.
+    attachmentsPlagiarisms?: string[]; // Plagiarism HTML for each attachment.
 };
 
 /**