From 87a07217fc44db421587e5ef5658ed5aaa8ac4ba Mon Sep 17 00:00:00 2001
From: Alfonso Salces <alfonso.salces@moodle.com>
Date: Wed, 15 Feb 2023 11:05:22 +0100
Subject: [PATCH] MOBILE-4251 Feedback: Avoid displaying the preview button to
 students

---
 scripts/langindex.json                                    | 1 +
 .../components/index/addon-mod-feedback-index.html        | 2 +-
 src/addons/mod/feedback/pages/form/form.ts                | 8 ++++++++
 src/core/lang.json                                        | 1 +
 4 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/scripts/langindex.json b/scripts/langindex.json
index bc5b434d3..ca500a630 100644
--- a/scripts/langindex.json
+++ b/scripts/langindex.json
@@ -2105,6 +2105,7 @@
   "core.nopasswordchangeforced": "local_moodlemobileapp",
   "core.nopermissionerror": "local_moodlemobileapp",
   "core.nopermissions": "error",
+  "core.nopermissiontoaccesspage": "error",
   "core.noresults": "moodle",
   "core.noselection": "form",
   "core.notapplicable": "local_moodlemobileapp",
diff --git a/src/addons/mod/feedback/components/index/addon-mod-feedback-index.html b/src/addons/mod/feedback/components/index/addon-mod-feedback-index.html
index d416650ca..ae34749c5 100644
--- a/src/addons/mod/feedback/components/index/addon-mod-feedback-index.html
+++ b/src/addons/mod/feedback/components/index/addon-mod-feedback-index.html
@@ -36,7 +36,7 @@
 
     <div collapsible-footer *ngIf="!showLoading" slot="fixed">
         <div class="list-item-limited-width adaptable-buttons-row"
-            *ngIf="access && (access.canedititems || access.canviewreports || !access.isempty)">
+            *ngIf="access && !access.isempty && (access.canedititems || access.canviewreports)">
             <ion-button expand="block" fill="outline" (click)="gotoAnswerQuestions(true)" class="ion-margin ion-text-wrap">
                 <ion-icon name="fas-search" slot="start" aria-hidden="true"></ion-icon>
                 {{ 'addon.mod_feedback.preview' | translate }}
diff --git a/src/addons/mod/feedback/pages/form/form.ts b/src/addons/mod/feedback/pages/form/form.ts
index 3ff6d0e44..256d46ce9 100644
--- a/src/addons/mod/feedback/pages/form/form.ts
+++ b/src/addons/mod/feedback/pages/form/form.ts
@@ -109,6 +109,14 @@ export class AddonModFeedbackFormPage implements OnInit, OnDestroy, CanLeave {
 
         await this.fetchData();
 
+        if (!this.access || this.access.isempty || (!this.access.canedititems && !this.access.canviewreports)) {
+            CoreDomUtils.showErrorModal(Translate.instant('core.nopermissiontoaccesspage'));
+
+            CoreNavigator.back();
+
+            return;
+        }
+
         if (!this.feedback) {
             return;
         }
diff --git a/src/core/lang.json b/src/core/lang.json
index c87f175ed..278dae7e1 100644
--- a/src/core/lang.json
+++ b/src/core/lang.json
@@ -214,6 +214,7 @@
     "nopasswordchangeforced": "You cannot proceed without changing your password.",
     "nopermissionerror": "Sorry, but you do not currently have permissions to do that",
     "nopermissions": "Sorry, but you do not currently have permissions to do that ({{$a}}).",
+    "nopermissiontoaccesspage": "You don't have permission to access this page.",
     "noresults": "No results",
     "noselection": "No selection",
     "notapplicable": "n/a",