add file upload service

src/modules/cards/use-cases/update-card-use-case.ts

@@ -2,18 +2,24 @@ import { CommandHandler, ICommandHandler } from '@nestjs/cqrs'
 import { CardsRepository } from '../infrastructure/cards.repository'
 import { UpdateCardDto } from '../dto/update-card.dto'
 import { BadRequestException, NotFoundException } from '@nestjs/common'
+import { FileUploadService } from '../../../infrastructure/file-upload-service/file-upload.service'
 
 export class UpdateCardCommand {
   constructor(
     public readonly cardId: string,
     public readonly card: UpdateCardDto,
-    public readonly userId: string
+    public readonly userId: string,
+    public readonly answerImg?: Express.Multer.File,
+    public readonly questionImg?: Express.Multer.File
   ) {}
 }
 
 @CommandHandler(UpdateCardCommand)
 export class UpdateCardHandler implements ICommandHandler<UpdateCardCommand> {
-  constructor(private readonly cardsRepository: CardsRepository) {}
+  constructor(
+    private readonly cardsRepository: CardsRepository,
+    private readonly fileUploadService: FileUploadService
+  ) {}
 
   async execute(command: UpdateCardCommand) {
     const card = await this.cardsRepository.findCardById(command.cardId)
@@ -24,6 +30,32 @@ export class UpdateCardHandler implements ICommandHandler<UpdateCardCommand> {
       throw new BadRequestException(`You can't change a card that you don't own`)
     }
 
-    return await this.cardsRepository.updateCardById(command.cardId, command.card)
+    const addQuestionImagePromise = this.fileUploadService.uploadFile(
+      command.questionImg.buffer,
+      command.questionImg.originalname
+    )
+    const addAnswerImagePromise = this.fileUploadService.uploadFile(
+      command.answerImg.buffer,
+      command.answerImg.originalname
+    )
+
+    let questionImg, answerImg
+
+    if (command.questionImg && command.answerImg) {
+      const result = await Promise.all([addQuestionImagePromise, addAnswerImagePromise])
+      questionImg = result[0].fileUrl
+      answerImg = result[1].fileUrl
+    } else if (command.answerImg) {
+      const result = await addAnswerImagePromise
+      answerImg = result.fileUrl
+    } else if (command.questionImg) {
+      const result = await addQuestionImagePromise
+      questionImg = result.fileUrl
+    }
+    return await this.cardsRepository.updateCardById(command.cardId, {
+      ...command.card,
+      answerImg,
+      questionImg,
+    })
   }
 }