add crete/get cards

src/modules/cards/use-cases/delete-deck-by-id-use-case.ts

@@ -0,0 +1,21 @@
+import { CommandHandler, ICommandHandler } from '@nestjs/cqrs'
+import { CardsRepository } from '../infrastructure/cards.repository'
+import { BadRequestException, NotFoundException } from '@nestjs/common'
+
+export class DeleteDeckByIdCommand {
+  constructor(public readonly id: string, public readonly userId: string) {}
+}
+
+@CommandHandler(DeleteDeckByIdCommand)
+export class DeleteDeckByIdHandler implements ICommandHandler<DeleteDeckByIdCommand> {
+  constructor(private readonly deckRepository: CardsRepository) {}
+
+  async execute(command: DeleteDeckByIdCommand) {
+    const deck = await this.deckRepository.findDeckById(command.id)
+    if (!deck) throw new NotFoundException(`Deck with id ${command.id} not found`)
+    if (deck.userId !== command.userId) {
+      throw new BadRequestException(`You can't delete a deck that you don't own`)
+    }
+    return await this.deckRepository.deleteDeckById(command.id)
+  }
+}

src/modules/cards/use-cases/get-deck-by-id-use-case.ts

@@ -0,0 +1,15 @@
+import { CommandHandler, ICommandHandler } from '@nestjs/cqrs'
+import { CardsRepository } from '../infrastructure/cards.repository'
+
+export class GetDeckByIdCommand {
+  constructor(public readonly id: string) {}
+}
+
+@CommandHandler(GetDeckByIdCommand)
+export class GetDeckByIdHandler implements ICommandHandler<GetDeckByIdCommand> {
+  constructor(private readonly deckRepository: CardsRepository) {}
+
+  async execute(command: GetDeckByIdCommand) {
+    return await this.deckRepository.findDeckById(command.id)
+  }
+}

src/modules/cards/use-cases/index.ts

@@ -0,0 +1,5 @@
+export * from '../../decks/use-cases/create-card-use-case'
+export * from '../../decks/use-cases/get-all-cards-in-deck-use-case'
+export * from './get-deck-by-id-use-case'
+export * from './delete-deck-by-id-use-case'
+export * from './update-deck-use-case'

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

@@ -0,0 +1,29 @@
+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'
+
+export class UpdateDeckCommand {
+  constructor(
+    public readonly deckId: string,
+    public readonly deck: UpdateCardDto,
+    public readonly userId: string
+  ) {}
+}
+
+@CommandHandler(UpdateDeckCommand)
+export class UpdateDeckHandler implements ICommandHandler<UpdateDeckCommand> {
+  constructor(private readonly deckRepository: CardsRepository) {}
+
+  async execute(command: UpdateDeckCommand) {
+    const deck = await this.deckRepository.findDeckById(command.deckId)
+
+    if (!deck) throw new NotFoundException(`Deck with id ${command.deckId} not found`)
+
+    if (deck.userId !== command.userId) {
+      throw new BadRequestException(`You can't change a deck that you don't own`)
+    }
+
+    return await this.deckRepository.updateDeckById(command.deckId, command.deck)
+  }
+}