From 1bfb7ad1111735fb264e42e8bd0fcb41b51ca3ee Mon Sep 17 00:00:00 2001
From: Sergey Yarkov <serzh.yarkov@gmail.com>
Date: Fri, 13 Aug 2021 23:54:09 +0300
Subject: [PATCH] feat: get likes count from course

---
 app/Controllers/Http/Api/v1/CoursesController.ts | 14 ++++++++++++++
 app/Repositories/CourseRepository.ts             | 15 +++++++++++++++
 app/Services/CourseService.ts                    | 12 +++++++++++-
 database/factories/index.ts                      |  3 +--
 routes/apis/v1/courses.ts                        |  4 ++++
 5 files changed, 45 insertions(+), 3 deletions(-)

diff --git a/app/Controllers/Http/Api/v1/CoursesController.ts b/app/Controllers/Http/Api/v1/CoursesController.ts
index 206f817..27b9162 100644
--- a/app/Controllers/Http/Api/v1/CoursesController.ts
+++ b/app/Controllers/Http/Api/v1/CoursesController.ts
@@ -198,6 +198,20 @@ export default class CoursesController extends BaseController {
     return this.sendResponse(ctx, result.data, result.message, result.status);
   }
 
+  /**
+   * Get likes count of course
+   * GET /courses/:id/likes
+   */
+  public async showLikes(ctx: HttpContextContract) {
+    const result = await this.courseService.fetchCourseLikesCount(ctx.params.id);
+
+    if (!result.success && result.error) {
+      throw new Exception(result.message, result.status, result.error.code);
+    }
+
+    return this.sendResponse(ctx, result.data, result.message, result.status);
+  }
+
   /**
    * Set like on course by authorized user
    * PUT /courses/:id/likes
diff --git a/app/Repositories/CourseRepository.ts b/app/Repositories/CourseRepository.ts
index c64f6ef..dfb57b8 100644
--- a/app/Repositories/CourseRepository.ts
+++ b/app/Repositories/CourseRepository.ts
@@ -1,6 +1,7 @@
 /**
  * Datatypes
  */
+import Database from '@ioc:Adonis/Lucid/Database';
 import CourseStatusEnum from 'App/Datatypes/Enums/CourseStatusEnum';
 
 /**
@@ -18,9 +19,12 @@ import CreateCourseValidator from 'App/Validators/Course/CreateCourseValidator';
 import UpdateCourseValidator from 'App/Validators/Course/UpdateCourseValidator';
 
 export default class CourseRepository {
+  private Database: typeof Database;
+
   private Course: typeof Course;
 
   constructor() {
+    this.Database = Database;
     this.Course = Course;
   }
 
@@ -68,6 +72,17 @@ export default class CourseRepository {
     return course;
   }
 
+  /**
+   * Get likes count of course by id
+   *
+   * @param id Course id
+   * @returns Likes count
+   */
+  public async getLikesCount(id: string | number): Promise<any> {
+    const likes = await this.Database.query().from('courses_likes').where('course_id', id).count('* as count');
+    return likes[0].count;
+  }
+
   /**
    * Get teacher of course
    *
diff --git a/app/Services/CourseService.ts b/app/Services/CourseService.ts
index 3928647..150fc97 100644
--- a/app/Services/CourseService.ts
+++ b/app/Services/CourseService.ts
@@ -559,7 +559,6 @@ export default class CourseService {
 
   public async setCourseStatus(id: string | number, status: CourseStatusEnum): Promise<IResponse> {
     const data = await this.courseRepository.setStatus(id, status);
-    console.log(data);
 
     if (!data) {
       return {
@@ -580,6 +579,17 @@ export default class CourseService {
       data: {},
     };
   }
+
+  public async fetchCourseLikesCount(id: string | number): Promise<IResponse> {
+    const count = await this.courseRepository.getLikesCount(id);
+
+    return {
+      success: true,
+      status: StatusCodeEnum.OK,
+      message: 'Fetched course likes count.',
+      data: { count },
+    };
+  }
 }
 
 new Ioc().make(CourseService);
diff --git a/database/factories/index.ts b/database/factories/index.ts
index 63faac0..5f4422a 100644
--- a/database/factories/index.ts
+++ b/database/factories/index.ts
@@ -49,9 +49,8 @@ export const LessonFactory = Factory.define(Lesson, ({ faker }) => {
   .build();
 
 export const CategoryFactory = Factory.define(Category, ({ faker }) => {
-  const title = faker.lorem.word(6);
   return {
-    title: `${title[0].toUpperCase()}${title.slice(1)}`,
+    title: `Category #${faker.datatype.number(200)}`,
     description: faker.lorem.sentence(5),
   };
 }).build();
diff --git a/routes/apis/v1/courses.ts b/routes/apis/v1/courses.ts
index e85e6d6..314d06b 100644
--- a/routes/apis/v1/courses.ts
+++ b/routes/apis/v1/courses.ts
@@ -34,6 +34,10 @@ Route.group(() => {
     .middleware('role:admin,teacher')
     .as('courses.detach-student');
 
+  Route.get('/:id/likes', 'Api/v1/CoursesController.showLikes')
+    .middleware('role:admin,teacher,student')
+    .as('courses.show-likes');
+
   Route.put('/:id/likes', 'Api/v1/CoursesController.setLike')
     .middleware('role:admin,teacher,student')
     .as('courses.set-like');