add crete/get cards

src/modules/decks/use-cases/get-all-cards-in-deck-use-case.ts

@@ -0,0 +1,28 @@
+import { CommandHandler, ICommandHandler } from '@nestjs/cqrs'
+import { CardsRepository } from '../../cards/infrastructure/cards.repository'
+import { GetAllCardsInDeckDto } from '../../cards/dto/get-all-cards.dto'
+import { ForbiddenException, NotFoundException } from '@nestjs/common'
+
+export class GetAllCardsInDeckCommand {
+  constructor(
+    public readonly userId: string,
+    public readonly deckId: string,
+    public readonly params: GetAllCardsInDeckDto
+  ) {}
+}
+
+@CommandHandler(GetAllCardsInDeckCommand)
+export class GetAllCardsInDeckHandler implements ICommandHandler<GetAllCardsInDeckCommand> {
+  constructor(private readonly cardsRepository: CardsRepository) {}
+
+  async execute(command: GetAllCardsInDeckCommand) {
+    const deck = await this.cardsRepository.findDeckById(command.deckId)
+    if (!deck) throw new NotFoundException(`Deck with id ${command.deckId} not found`)
+
+    if (deck.userId !== command.userId && deck.isPrivate) {
+      throw new ForbiddenException(`You can't get a private deck that you don't own`)
+    }
+
+    return await this.cardsRepository.findCardsByDeckId(command.deckId, command.params)
+  }
+}