Delisting unavailable pinned courses

api/courses.go

@@ -286,6 +286,19 @@ func (r coursesRoutes) getPinned(c *gin.Context) {
 	user := tumLiveContext.User
 	resp := make([]model.CourseDTO, 0, len(pinnedCourses))
 	for _, course := range pinnedCourses {
+		enrolled := false
+		var err error
+		// todo: check if user is allowed to see the course
+		// -> Get full course from database
+		if user != nil {
+			enrolled, err = r.CoursesDao.IsUserEnrolledInCourse(user.ID, course.ID)
+			if err != nil {
+				enrolled = false
+			}
+		}
+		if course.Visibility == "enrolled" && !enrolled {
+			continue
+		}
 		if !course.IsHidden() {
 			resp = append(resp, course.ToDTO(user))
 		}

dao/courses.go

@@ -44,6 +44,8 @@ type CoursesDao interface {
 
 	RemoveAdminFromCourse(userID uint, courseID uint) error
 	DeleteCourse(course model.Course)
+
+	IsUserEnrolledInCourse(userID uint, courseID uint) (bool, error)
 }
 
 type coursesDao struct {
@@ -338,3 +340,12 @@ func (d coursesDao) DeleteCourse(course model.Course) {
 		logger.Error("Can't delete course", "err", err)
 	}
 }
+
+func (d coursesDao) IsUserEnrolledInCourse(user uint, course uint) (bool, error) {
+	var nRows int64
+	err := DB.Table("course_users").Where("user_id = ? AND course_id = ?", user, course).Count(&nRows).Error
+	if err != nil {
+		return false, err
+	}
+	return nRows == 1, nil
+}

web/template/home.gohtml

@@ -13,6 +13,7 @@
 
     {{if and .VersionTag (eq .VersionTag "development")}}
     <script defer src="/static/node_modules/alpinejs/dist/cdn.js"></script>
+    <script defer src="/static/node_modules/alpinejs/dist/cdn.js"></script>
     {{else}}
     <script defer src="/static/node_modules/alpinejs/dist/cdn.min.js"></script>
     {{end}}

web/template/index.gohtml

@@ -27,7 +27,7 @@
     {{if .PinnedCourses}}
         <h2 class="text-2xl text-1 mt-2">Pinned Courses</h2>
         {{range $course := .PinnedCourses}}
-            {{if not $course.IsHidden}}
+            {{if $user.IsEligibleToWatchCourse $course}}
                 {{template "course-card" (dict "course" $course "user" $user)}}
             {{end}}
         {{end}}