import { Controller, Get, Patch, Body } from '@nestjs/common';
import { IsEmail, IsOptional, IsString, MaxLength } from 'class-validator';
import { UsersService } from './users.service';
import { CurrentUser } from '../auth/decorators/current-user.decorator';

class UpdateProfileDto {
  @IsOptional()
  @IsString()
  @MaxLength(100)
  firstName?: string;

  @IsOptional()
  @IsString()
  @MaxLength(100)
  lastName?: string;

  @IsOptional()
  @IsEmail()
  email?: string;
}

@Controller('api/users')
export class UsersController {
  constructor(private readonly usersService: UsersService) {}

  @Get('me')
  async getMe(@CurrentUser() user: { userId: number; username: string }) {
    const found = await this.usersService.findById(user.userId);
    return {
      id: found?.id,
      username: found?.username,
      email: found?.email,
      firstName: found?.firstName,
      lastName: found?.lastName,
    };
  }

  @Patch('me')
  async updateMe(
    @CurrentUser() user: { userId: number; username: string },
    @Body() dto: UpdateProfileDto,
  ) {
    const updated = await this.usersService.updateProfile(user.userId, dto);
    return {
      id: updated.id,
      username: updated.username,
      email: updated.email,
      firstName: updated.firstName,
      lastName: updated.lastName,
    };
  }
}