Use command and query bus in backoffice frontend app

Author: Fortiz2305

src/apps/backoffice/frontend/config/dependency-injection/application.yaml

@@ -8,11 +8,11 @@ services:
 
   Mooc.coursesCounter.CoursesCounterFinder:
     class: ../../../../../Contexts/Mooc/CoursesCounter/application/Find/CoursesCounterFinder
-    arguments: ["@Mooc.coursesCounter.CoursesCounterRepository"]
+    arguments: ['@Mooc.coursesCounter.CoursesCounterRepository']
 
   Mooc.coursesCounter.CoursesCounterRepository:
     class: ../../../../../Contexts/Mooc/CoursesCounter/infrastructure/persistence/mongo/MongoCoursesCounterRepository
-    arguments: ["@Mooc.shared.ConnectionManager"]
+    arguments: ['@Mooc.shared.ConnectionManager']
 
   Mooc.shared.ConnectionManager:
     factory:
@@ -34,8 +34,36 @@ services:
 
   Apps.Backoffice.Frontend.controllers.CoursesGetController:
     class: ../../controllers/CoursesGetController
-    arguments: ['@Mooc.coursesCounter.CoursesCounterFinder']
+    arguments: ['@Mooc.shared.QueryBus']
 
   Apps.Backoffice.Frontend.controllers.CoursesPostController:
     class: ../../controllers/CoursesPostController
+    arguments: ['@Mooc.shared.CommandBus']
+
+  Mooc.coursesCounter.FindCoursesCounterQueryHandler:
+    class: ../../../../../Contexts/Mooc/CoursesCounter/application/Find/FindCoursesCounterQueryHandler
+    arguments: ['@Mooc.coursesCounter.CoursesCounterFinder']
+    tags:
+      - { name: 'queryHandler' }
+
+  Mooc.courses.CreateCourseCommandHandler:
+    class: ../../../../../Contexts/Mooc/Courses/application/CreateCourseCommandHandler
     arguments: ['@Mooc.courses.CourseCreator']
+    tags:
+      - { name: 'commandHandler' }
+
+  Mooc.shared.QueryBus:
+    class: ../../../../../Contexts/Shared/infrastructure/QueryBus/InMemoryQueryBus
+    arguments: ['@Mooc.shared.QueryHandlersInformation']
+
+  Mooc.shared.CommandBus:
+    class: ../../../../../Contexts/Shared/infrastructure/CommandBus/InMemoryCommandBus
+    arguments: ['@Mooc.shared.CommandHandlersInformation']
+
+  Mooc.shared.QueryHandlersInformation:
+    class: ../../../../../Contexts/Shared/infrastructure/QueryBus/QueryHandlersInformation
+    arguments: ['!tagged queryHandler']
+
+  Mooc.shared.CommandHandlersInformation:
+    class: ../../../../../Contexts/Shared/infrastructure/CommandBus/CommandHandlersInformation
+    arguments: ['!tagged commandHandler']

src/apps/backoffice/frontend/controllers/CoursesGetController.ts

@@ -1,12 +1,14 @@
 import { Request, Response } from 'express';
-import { CoursesCounterFinder } from '../../../../Contexts/Mooc/CoursesCounter/application/Find/CoursesCounterFinder';
 import { Uuid } from '../../../../Contexts/Shared/domain/value-object/Uuid';
+import { QueryBus } from '../../../../Contexts/Shared/domain/QueryBus';
+import { FindCoursesCounterResponse } from '../../../../Contexts/Mooc/CoursesCounter/application/Find/FindCoursesCounterResponse';
+import { FindCoursesCounterQuery } from '../../../../Contexts/Mooc/CoursesCounter/application/Find/FindCoursesCounterQuery';
 
 export class CoursesGetController {
-  constructor(private coursesCounterFinder: CoursesCounterFinder) {}
+  constructor(private queryBus: QueryBus) {}
 
   async run(req: Request, res: Response) {
-    const courses = await this.coursesCounterFinder.run();
+    const courses = await this.queryBus.ask<FindCoursesCounterResponse>(new FindCoursesCounterQuery());
 
     res.render('pages/courses/courses', {
       title: 'Welcome',

src/apps/backoffice/frontend/controllers/CoursesPostController.ts

@@ -1,9 +1,9 @@
 import { Request, Response } from 'express';
-import { CreateCourseRequest } from '../../../../Contexts/Mooc/Courses/application/CreateCourseRequest';
-import { CourseCreator } from '../../../../Contexts/Mooc/Courses/application/CourseCreator';
+import { CommandBus } from '../../../../Contexts/Shared/domain/CommandBus';
+import { CreateCourseCommand } from '../../../../Contexts/Mooc/Courses/application/CreateCourseCommand';
 
 export class CoursesPostController {
-  constructor(private courseCreator: CourseCreator) {}
+  constructor(private commandBus: CommandBus) {}
 
   async run(req: Request, res: Response) {
     // TODO: validation
@@ -13,11 +13,13 @@ export class CoursesPostController {
   }
 
   private async createCourse(req: Request, res: Response) {
-    await this.courseCreator.run({
-      courseId: req.body.id,
-      courseName: req.body.name,
-      courseDuration: req.body.duration
+    const createCourseCommand = new CreateCourseCommand({
+      id: req.body.id,
+      name: req.body.name,
+      duration: req.body.duration
     });
+    await this.commandBus.dispatch(createCourseCommand);
+
     req.flash('message', `Felicidades, el curso ${req.body.name} ha sido creado!`);
     res.redirect('/courses');
   }

src/apps/mooc_backend/config/dependency-injection/CoursesCounter/application.yaml

@@ -20,10 +20,8 @@ services:
     class: ../../../../../Contexts/Mooc/CoursesCounter/application/Find/CoursesCounterFinder
     arguments: ["@Mooc.coursesCounter.CoursesCounterRepository"]
 
-  
   Mooc.coursesCounter.FindCoursesCounterQueryHandler:
     class: ../../../../../Contexts/Mooc/CoursesCounter/application/Find/FindCoursesCounterQueryHandler
     arguments: ["@Mooc.coursesCounter.CoursesCounterFinder"]
     tags:
       - { name: 'queryHandler' }
-