feat: upload video lesson via src link

app/Models/Lesson.ts

@@ -37,6 +37,9 @@ export default class Lesson extends BaseModel {
   @column()
   public description: string;
 
+  @column()
+  public linked_video_url: string | null;
+
   @column()
   public duration: string;
 

app/Repositories/LessonRepository.ts

@@ -106,6 +106,7 @@ export default class LessonRepository {
       duration: data.duration.toFormat('HH:mm:ss'),
       display_order: Number.parseInt(course.$extras.lessons_count, 10) + 1,
       course_id: course.id,
+      linked_video_url: !data.video ? data.linked_video_url : null,
     });
 
     /**
@@ -116,7 +117,9 @@ export default class LessonRepository {
     /**
      * Move video file to disk and save to database
      */
-    await this.createVideo(lesson, data.video);
+    if (data.video) {
+      await this.createVideo(lesson, data.video);
+    }
 
     /**
      * Create materials
@@ -154,22 +157,28 @@ export default class LessonRepository {
       });
 
       /**
-       * Update video
+       * Update linked video url
        */
-      if (data.video) {
-        /**
-         * Delete video from drive and database
-         */
+      if (data.linked_video_url && !data.video) {
         if (lesson.video) {
           await this.Drive.delete(`videos/${lesson.video.name}`);
         }
 
         await lesson.related('video').query().delete();
+        lesson.merge({ linked_video_url: data.linked_video_url });
+      }
 
-        /**
-         * Upload new video to drive and save to database
-         */
+      /**
+       * Update file video
+       */
+      if (data.video) {
+        if (lesson.video) {
+          await this.Drive.delete(`videos/${lesson.video.name}`);
+        }
+
+        await lesson.related('video').query().delete();
         await this.createVideo(lesson, data.video);
+        lesson.merge({ linked_video_url: null });
       }
 
       /**

app/Services/CourseService.ts

@@ -312,23 +312,7 @@ export default class CourseService {
       };
     }
 
-    /**
-     * Collect all file names from lessons in course and delete files
-     */
-    const videos: string[] = course.lessons.map(lesson => lesson.video.name);
-    const materials: string[] = course.lessons.map(lesson => lesson.materials.map(m => m.name)).flat();
-
-    await Promise.all(
-      videos.map(async name => {
-        await Drive.delete(`videos/${name}`);
-      })
-    );
-
-    await Promise.all(
-      materials.map(async name => {
-        await Drive.delete(`materials/${name}`);
-      })
-    );
+    await this.deleteAllFiles([course]);
 
     return {
       success: true,
@@ -377,13 +361,13 @@ export default class CourseService {
 
       await teacher.load('roles');
 
-      const isTeacher = RoleHelper.userContainRoles(teacher.roles, [RoleEnum.TEACHER]);
+      const isTeacherOrAdmin = RoleHelper.userContainRoles(teacher.roles, [RoleEnum.ADMIN, RoleEnum.TEACHER]);
 
-      if (!isTeacher) {
+      if (!isTeacherOrAdmin) {
         return {
           success: false,
           status: HttpStatusEnum.BAD_REQUEST,
-          message: 'Author is not a teacher.',
+          message: 'Author is not a teacher or admin.',
           data: {},
           error: {
             code: 'E_BAD_REQUEST',
@@ -392,13 +376,13 @@ export default class CourseService {
       }
     }
 
-    await this.courseRepository.update(id, data);
+    const updated = await this.courseRepository.update(id, data);
 
     return {
       success: true,
       status: HttpStatusEnum.OK,
       message: 'Course updated.',
-      data: course,
+      data: updated || {},
     };
   }
 

app/Validators/Lesson/CreateLessonValidator.ts

@@ -9,10 +9,11 @@ export default class CreateLessonValidator {
     title: schema.string({}, [rules.maxLength(255)]),
     description: schema.string(),
     duration: schema.date({ format: 'HH:mm:ss' }),
-    video: schema.file({
+    video: schema.file.optional({
       size: '5000mb',
       extnames: ['mp4', 'mov', 'avi', 'wmv', 'webm', 'flv'],
     }),
+    linked_video_url: schema.string.optional([rules.regex(new RegExp('^(http|https|ftp)://'))]),
     materials: schema.array.optional().members(
       schema.file({
         size: '100mb',

app/Validators/Lesson/UpdateLessonValidator.ts

@@ -13,6 +13,7 @@ export default class UpdateLessonValidator {
       size: '5000mb',
       extnames: ['mp4', 'mov', 'avi', 'wmv', 'webm', 'flv'],
     }),
+    linked_video_url: schema.string.optional([rules.regex(new RegExp('^(http|https|ftp)://'))]),
     materials: schema.array.nullableAndOptional().members(
       schema.file({
         size: '100mb',

database/migrations/1628016919501_lessons.ts

@@ -11,6 +11,7 @@ export default class Lessons extends BaseSchema {
       table.integer('display_order').notNullable();
       table.integer('color_id').unsigned().references('colors.id');
       table.string('description');
+      table.text('linked_video_url').nullable();
       table.time('duration').notNullable();
       table.timestamp('created_at', { useTz: true });
       table.timestamp('updated_at', { useTz: true });