import {
  Controller,
  Get,
  Query,
  Session,
  HttpException,
  HttpStatus,
  Redirect,
} from '@nestjs/common';
import { UsersService } from './users.service';
import { UserResponseDTO } from './dto/userresponse.dto';
import { ApiTags } from '@nestjs/swagger';

import { ConfigService } from '@nestjs/config';
import { SessionData } from 'express-session';

const configService = new ConfigService();

@ApiTags('auth')
@Controller()
export class UsersController {
  constructor(private readonly usersService: UsersService) {}

  @Get('/login')
  @Redirect()
  async login(@Query('code') code: string, @Session() session: SessionData) {
    await this.usersService.createDiscordToken({ code }, session);
    await this.usersService.discordLogin(session);
    return { url: configService.get<string>('CLIENT_ENDPOINT') };
  }

  @Get('/logout')
  @Redirect()
  async logout(@Session() session: SessionData) {
    await this.usersService.discordLogout(session);
    return { url: configService.get<string>('CLIENT_ENDPOINT') };
  }

  @Get('/whoami')
  async remove(@Session() session: SessionData): Promise<UserResponseDTO> {
    if (!session.tokenData) {
      throw new HttpException(
        "Session doesn't contains auth information",
        HttpStatus.UNAUTHORIZED,
      );
    }
    await this.usersService.discordLogin(session);
    return new UserResponseDTO(session.user);
  }
}