feat: attaching materials to lesson

.env.example

@@ -5,9 +5,9 @@ APP_KEY=IP387l45rlNO3t7Qgjd89qr-a2G4oUgz
 DB_CONNECTION=pg
 PG_HOST=localhost
 PG_PORT=5432
-PG_USER=lucid
+PG_USER=postgres
 PG_PASSWORD=
-PG_DB_NAME=lucid
+PG_DB_NAME=educt
 REDIS_CONNECTION=local
 REDIS_HOST=127.0.0.1
 REDIS_PORT=6379

app/Controllers/Http/Api/v1/LessonsController.ts

@@ -100,7 +100,7 @@ export default class LessonsController extends BaseController {
    * GET /lessons/:id/content
    */
   public async getContent(ctx: HttpContextContract) {
-    const result = await this.lessonService.fetchLessonContent(ctx.params.id, ctx.auth);
+    const result = await this.lessonService.fetchLessonContent(ctx.params.id, ctx);
 
     if (!result.success && result.error) {
       throw new Exception(result.message, result.status, result.error.code);

app/Models/Lesson.ts

@@ -28,10 +28,10 @@ export default class Lesson extends BaseModel {
   })
   public content: HasOne<typeof LessonContent>;
 
-  @column.dateTime({ autoCreate: true, serializeAs: null })
+  @column.dateTime({ autoCreate: true })
   public createdAt: DateTime;
 
-  @column.dateTime({ autoCreate: true, autoUpdate: true, serializeAs: null })
+  @column.dateTime({ autoCreate: true, autoUpdate: true })
   public updatedAt: DateTime;
 
   /**

app/Models/LessonContent.ts

@@ -1,9 +1,10 @@
-import { BaseModel, column } from '@ioc:Adonis/Lucid/Orm';
+import { BaseModel, column, HasMany, hasMany } from '@ioc:Adonis/Lucid/Orm';
 import { DateTime } from 'luxon';
+import LessonMaterial from './LessonMaterial';
 
 export default class LessonContent extends BaseModel {
   @column({ isPrimary: true })
-  public id: string;
+  public id: number;
 
   @column()
   public lesson_id: string;
@@ -11,6 +12,9 @@ export default class LessonContent extends BaseModel {
   @column()
   public video_url: string;
 
+  @hasMany(() => LessonMaterial, { foreignKey: 'lesson_content_id' })
+  public materials: HasMany<typeof LessonMaterial>;
+
   @column.dateTime({ autoCreate: true, serializeAs: null })
   public createdAt: DateTime;
 

app/Models/LessonMaterial.ts

@@ -0,0 +1,25 @@
+import { BaseModel, column } from '@ioc:Adonis/Lucid/Orm';
+import { DateTime } from 'luxon';
+
+export default class LessonMaterial extends BaseModel {
+  @column({ isPrimary: true })
+  public id: number;
+
+  @column()
+  public url: string;
+
+  @column()
+  public name: string;
+
+  @column()
+  public ext: string;
+
+  @column()
+  public lesson_content_id: number;
+
+  @column.dateTime({ autoCreate: true })
+  public createdAt: DateTime;
+
+  @column.dateTime({ autoCreate: true, autoUpdate: true })
+  public updatedAt: DateTime;
+}

app/Repositories/LessonRepository.ts

@@ -61,9 +61,38 @@ export default class LessonRepository {
       description: data.description,
     });
 
+    /**
+     * Attach lesson to course
+     */
     await lesson.related('course').associate(course);
-    await lesson.related('content').create({ video_url: data.video_url });
-    await lesson.load('content');
+
+    /**
+     * Create content and materials fields in database
+     */
+    const content = await lesson.related('content').create({ video_url: data.video_url });
+
+    if (data.materials) {
+      await Promise.all(
+        data.materials.map(async file => {
+          /**
+           * Move each file to disk and then save in database
+           */
+          await file.moveToDisk('materials');
+          if (file.state === 'moved') {
+            await content.related('materials').create({
+              name: file.clientName,
+              ext: file.extname,
+              url: file.filePath,
+            });
+          }
+        })
+      );
+    }
+
+    /**
+     * Load data
+     */
+    await lesson.load('content', q => q.preload('materials'));
 
     return lesson;
   }

app/Services/LessonService.ts

@@ -1,11 +1,14 @@
 import { inject, Ioc } from '@adonisjs/core/build/standalone';
-import { AuthContract } from '@ioc:Adonis/Addons/Auth';
+// import { AuthContract } from '@ioc:Adonis/Addons/Auth';
+import { HttpContextContract } from '@ioc:Adonis/Core/HttpContext';
 
 /**
  * Datatypes
  */
 import HttpStatusEnum from 'App/Datatypes/Enums/HttpStatusEnum';
+// import RoleEnum from 'App/Datatypes/Enums/RoleEnum';
 import IResponse from 'App/Datatypes/Interfaces/IResponse';
+// import RoleHelper from 'App/Helpers/RoleHelper';
 /**
  * Repositories
  */
@@ -171,10 +174,7 @@ export default class LessonService {
    * @param auth AuthContract
    * @returns Response
    */
-  public async fetchLessonContent(id: string | number, auth: AuthContract): Promise<IResponse> {
-    const user = await auth.use('api').authenticate();
-    await user.load('courses');
-
+  public async fetchLessonContent(id: string | number, ctx: HttpContextContract): Promise<IResponse> {
     const lesson = await this.lessonRepository.getById(id);
 
     if (!lesson) {
@@ -189,11 +189,10 @@ export default class LessonService {
       };
     }
 
-    await lesson.load('course');
-
-    const userHasCourse = user.courses.find(course => course.id === lesson.course.id);
-
-    if (!userHasCourse) {
+    /**
+     * Allow user to view lesson content
+     */
+    if (await ctx.bouncer.denies('viewLessonContent', lesson)) {
       return {
         success: false,
         status: HttpStatusEnum.FORBIDDEN,
@@ -205,7 +204,10 @@ export default class LessonService {
       };
     }
 
-    await lesson.load('content');
+    /**
+     * Load lesson content with materials
+     */
+    await lesson.load('content', q => q.preload('materials'));
 
     return {
       success: true,

app/Validators/Lesson/CreateLessonValidator.ts

@@ -9,6 +9,12 @@ export default class CreateLessonValidator {
     title: schema.string({}, [rules.maxLength(255)]),
     description: schema.string(),
     video_url: schema.string({}, [rules.url()]),
+    materials: schema.array.optional().members(
+      schema.file({
+        size: '10mb',
+        extnames: ['pdf', 'zip', 'rar', 'doc', 'docx'],
+      })
+    ),
   });
 
   public messages = {};

database/factories/index.ts

@@ -20,7 +20,7 @@ const makeFakeUser = (faker: Faker.FakerStatic, loginPrefix?: string) => {
   return {
     first_name: faker.name.firstName(),
     last_name: faker.name.lastName(),
-    login: `${loginPrefix || 'user'}${faker.datatype.number(1000)}`,
+    login: `${loginPrefix || 'user'}${faker.datatype.number(10000)}`,
     email: faker.internet.exampleEmail(),
     password: '123456',
   };
@@ -76,8 +76,8 @@ export const CategoryFactory = Factory.define(Category, ({ faker }) => {
 
 export const CourseFactory = Factory.define(Course, ({ faker }) => {
   return {
-    title: `Course #${faker.datatype.number(200)}`,
-    description: faker.lorem.sentence(5),
+    title: faker.lorem.sentence(8),
+    description: faker.lorem.sentence(20),
     status: CourseStatusEnum.PUBLISHED,
   };
 })

database/migrations/1626545059988_images.ts

@@ -5,7 +5,7 @@ export default class Images extends BaseSchema {
 
   public async up() {
     this.schema.createTable(this.tableName, table => {
-      table.increments('id');
+      table.increments('id').primary();
       table.string('path').notNullable();
       table.string('name').notNullable();
       table.string('ext').notNullable();

database/migrations/1626964029348_roles.ts

@@ -5,7 +5,7 @@ export default class Roles extends BaseSchema {
 
   public async up() {
     this.schema.createTable(this.tableName, table => {
-      table.increments('id');
+      table.increments('id').primary();
       table.string('name').notNullable();
       table.string('slug').unique().notNullable();
       table.timestamp('created_at', { useTz: true });

database/migrations/1626970448054_users_roles.ts

@@ -5,7 +5,7 @@ export default class UsersRoles extends BaseSchema {
 
   public async up() {
     this.schema.createTable(this.tableName, table => {
-      table.increments('id');
+      table.increments('id').primary();
       table.string('user_id', 21).unsigned().references('users.id').onDelete('CASCADE');
       table.integer('role_id').unsigned().references('roles.id').onDelete('CASCADE');
       table.unique(['user_id', 'role_id']);

database/migrations/1627022639849_contacts.ts

@@ -5,7 +5,7 @@ export default class Contacts extends BaseSchema {
 
   public async up() {
     this.schema.createTable(this.tableName, table => {
-      table.increments('id');
+      table.increments('id').primary();
       table.string('user_id', 21).unsigned().references('users.id').unique().onDelete('CASCADE');
       table.string('phone_number').unique();
       table.string('vk_id').unique();

database/migrations/1627750162275_users_courses.ts

@@ -5,7 +5,7 @@ export default class UsersCourses extends BaseSchema {
 
   public async up() {
     this.schema.createTable(this.tableName, table => {
-      table.increments('id');
+      table.increments('id').primary();
       table.string('user_id', 21).unsigned().references('users.id').onDelete('CASCADE');
       table.string('course_id', 21).unsigned().references('courses.id').onDelete('CASCADE');
       table.unique(['user_id', 'course_id']);

database/migrations/1628017319337_lesson_contents.ts

@@ -5,7 +5,7 @@ export default class LessonContents extends BaseSchema {
 
   public async up() {
     this.schema.createTable(this.tableName, table => {
-      table.increments('id');
+      table.increments('id').primary();
       table.string('lesson_id', 21).unsigned().references('lessons.id').unique().onDelete('CASCADE');
       table.string('video_url').notNullable();
       table.timestamp('created_at', { useTz: true });

database/migrations/1628622517837_courses_likes.ts

@@ -5,7 +5,7 @@ export default class CoursesLikes extends BaseSchema {
 
   public async up() {
     this.schema.createTable(this.tableName, table => {
-      table.increments('id');
+      table.increments('id').primary();
       table.string('user_id', 21).unsigned().references('users.id').onDelete('CASCADE');
       table.string('course_id', 21).unsigned().references('courses.id').onDelete('CASCADE');
       table.timestamp('liked_on', { useTz: true });

database/migrations/1637080400230_lesson_materials.ts

@@ -0,0 +1,21 @@
+import BaseSchema from '@ioc:Adonis/Lucid/Schema';
+
+export default class LessonMaterials extends BaseSchema {
+  protected tableName = 'lesson_materials';
+
+  public async up() {
+    this.schema.createTable(this.tableName, table => {
+      table.increments('id').primary();
+      table.string('url').notNullable();
+      table.string('name').notNullable();
+      table.string('ext').notNullable();
+      table.integer('lesson_content_id').unsigned().references('lesson_contents.id').onDelete('CASCADE');
+      table.timestamp('created_at', { useTz: true });
+      table.timestamp('updated_at', { useTz: true });
+    });
+  }
+
+  public async down() {
+    this.schema.dropTable(this.tableName);
+  }
+}

start/bouncer.ts

@@ -8,6 +8,7 @@
 import Bouncer from '@ioc:Adonis/Addons/Bouncer';
 import RoleEnum from 'App/Datatypes/Enums/RoleEnum';
 import RoleHelper from 'App/Helpers/RoleHelper';
+import Lesson from 'App/Models/Lesson';
 import Role from 'App/Models/Role';
 import User from 'App/Models/User';
 
@@ -39,6 +40,15 @@ export const { actions } = Bouncer.define('manageUserRole', async (user: User, r
     (role.slug === RoleEnum.ADMIN || role.slug === RoleEnum.TEACHER) &&
     !RoleHelper.userContainRoles(user.roles, [RoleEnum.ADMIN])
   );
+}).define('viewLessonContent', async (user: User, lesson: Lesson) => {
+  await user.load(loader => loader.load('roles').load('courses'));
+  await lesson.load('course');
+
+  if (!RoleHelper.userContainRoles(user.roles, [RoleEnum.ADMIN, RoleEnum.TEACHER])) {
+    return !!user.courses.find(course => course.id === lesson.course.id);
+  }
+
+  return true;
 });
 
 /*