import { Controller, Get, Post, Body, Patch, Param, Delete, HttpException, HttpStatus } from '@nestjs/common';
import { UserService } from './user.service';
import { CreateUserDto } from './dto/create-user.dto';
import { UpdateUserDto } from './dto/update-user.dto';

import { createHash } from 'node:crypto';
import { JwtService } from '@nestjs/jwt';
import { Public } from './auth.guard';

@Controller('user')
export class UserController {
  constructor(
    private readonly userService: UserService,
    private jwtService: JwtService) {}

  @Public()
  @Post('login')
  async login(@Body() credentials: {username: string, password: string}) {
    let user = await this.userService.findOneByUsername(credentials.username);
    if(!user || user.password!=createHash('md5').update(credentials.password).digest('hex'))
      throw new HttpException('Unauthorized', HttpStatus.UNAUTHORIZED);
    
    let {password, ...payload} = user;
    return {
      data: {token: await this.jwtService.signAsync(payload)},
      error: 0
    };
  }

  @Post()
  create(@Body() createUserDto: CreateUserDto) {
    return this.userService.create(createUserDto);
  }

  @Get()
  findAll() {
    return this.userService.findAll();
  }

  @Get(':id')
  findOne(@Param('id') id: string) {
    return this.userService.findOne(+id);
  }

  @Patch(':id')
  update(@Param('id') id: string, @Body() updateUserDto: UpdateUserDto) {
    return this.userService.update(+id, updateUserDto);
  }

  @Delete(':id')
  remove(@Param('id') id: string) {
    return this.userService.remove(+id);
  }
}