import {
  Controller,
  Get,
  Param,
  Post,
  Request,
  Res,
  UploadedFile,
  UseGuards,
  UseInterceptors,
} from '@nestjs/common';
import { UsersService } from './users.service';
import { ApiOperation, ApiParam } from '@nestjs/swagger';
import { FileInterceptor } from '@nestjs/platform-express';
import { v4 as uuidv4 } from 'uuid';
import urlencode = require('urlencode');
import stream = require('stream');

@Controller('api/p/t/users')
export class UsersController {
  constructor(private readonly userService: UsersService) {}

  @Get()
  getHello(): string {
    return 'users controller[api/p/users2]';
  }

  @ApiOperation({ summary: '根据id查询用户' })
  @ApiParam({ name: 'id', description: '用户id' })
  @Get('u:id')
  findOne(@Param() params): any {
    const user = this.userService.findOneById(params.id);
    return user;
  }

  @ApiOperation({ summary: '上传头像文件' })
  @Post('upload-avatar/:id')
  @UseInterceptors(
    FileInterceptor('file', { limits: { fileSize: 2 * 1024 * 1024 } }),
  )
  async uploadAvatar(@UploadedFile() file, @Param() params) {
    const user = await this.userService.findOneById(params.id);
    const avatarKey = uuidv4();

    const accessory = await this.userService.createPAccessory({
      originalFilename: file.originalname,
      key: avatarKey,
      uploadFile: file.buffer,
      uploadDate: new Date(),
    });

    user.avatar = accessory;
    const updateInfo = await this.userService.updateAvatar(user.id, user);
    return { id: user.id, avatarKey: accessory.key };
  }

  @ApiOperation({ summary: '获取头像' })
  @Get('avatar/:key')
  findAvatar(@Res() res, @Param() params) {
    const avatar = this.userService.findAvatarOneByKey(params.key);

    avatar.then(function (accessory) {
      const filename = urlencode(accessory.originalFilename, 'utf8');
      const readStream = new stream.PassThrough();
      readStream.end(accessory.uploadFile);

      res.set('Content-disposition', 'attachment; filename=' + filename);
      res.set('Content-Type', 'text/plain');

      readStream.pipe(res);
    });
  }
}