import { Body, Controller, HttpCode, HttpStatus, Post, StreamableFile } from '@nestjs/common';
import { ApiOperation, ApiTags } from '@nestjs/swagger';
import { AssetIdsDto } from 'src/dtos/asset.dto';
import { AuthDto } from 'src/dtos/auth.dto';
import { DownloadInfoDto, DownloadResponseDto } from 'src/dtos/download.dto';
import { ApiTag, Permission } from 'src/enum';
import { Auth, Authenticated, FileResponse } from 'src/middleware/auth.guard';
import { DownloadService } from 'src/services/download.service';
import { asStreamableFile } from 'src/utils/file';

@ApiTags(ApiTag.Download)
@Controller('download')
export class DownloadController {
  constructor(private service: DownloadService) {}

  @Post('info')
  @Authenticated({ permission: Permission.AssetDownload, sharedLink: true })
  @ApiOperation({
    summary: 'Retrieve download information',
    description:
      'Retrieve information about how to request a download for the specified assets or album. The response includes groups of assets that can be downloaded together.',
  })
  getDownloadInfo(@Auth() auth: AuthDto, @Body() dto: DownloadInfoDto): Promise<DownloadResponseDto> {
    return this.service.getDownloadInfo(auth, dto);
  }

  @Post('archive')
  @Authenticated({ permission: Permission.AssetDownload, sharedLink: true })
  @FileResponse()
  @HttpCode(HttpStatus.OK)
  @ApiOperation({
    summary: 'Download asset archive',
    description:
      'Download a ZIP archive containing the specified assets. The assets must have been previously requested via the "getDownloadInfo" endpoint.',
  })
  downloadArchive(@Auth() auth: AuthDto, @Body() dto: AssetIdsDto): Promise<StreamableFile> {
    return this.service.downloadArchive(auth, dto).then(asStreamableFile);
  }
}