music-collection/backend/src/song/song.controller.ts

import {
  Body,
  Controller,
  Delete,
  Get,
  Param,
  Post,
  Put,
  UsePipes,
  ValidationPipe,
} from '@nestjs/common';
import { DeleteResult } from 'typeorm';
import { SongService } from './song.service';
import { Song } from './song.entity';
import { CreateSongDto } from './dto/create-song.dto';
import { UpdateSongDto } from './dto/update-song.dto';

@Controller('song')
export class SongController {
  constructor(private readonly songService: SongService) {}

  @Get()
  findAll(): Promise<Song[] | string | null> {
    return this.songService.findAll();
  }

  @Get(':id')
  findOneById(@Param('id') id: number): Promise<Song | string | null> {
    return this.songService.findOneById(id);
  }

  @Post()
  @UsePipes(new ValidationPipe({ transform: true }))
  async create(
    @Body() createSongDto: CreateSongDto,
  ): Promise<Song | string | null> {
    return this.songService.create(createSongDto);
  }

  @Put(':id')
  @UsePipes(new ValidationPipe({ transform: true }))
  async update(
    @Param('id') id: number,
    @Body() updateSongDto: UpdateSongDto,
  ): Promise<Song | string | null> {
    console.log(updateSongDto);
    return this.songService.update(id, updateSongDto);
  }

  @Delete(':id')
  async remove(@Param('id') id: number): Promise<DeleteResult | string | null> {
    return this.songService.remove(id);
  }
}