import { Injectable } from '@nestjs/common';
import { JwtService } from '@nestjs/jwt';
import { InjectRepository } from '@nestjs/typeorm';
import { Repository } from 'typeorm';
import { User } from './user.entity';

@Injectable()
export class AuthService {
    constructor(
        @InjectRepository(User)
        private usersRepository: Repository<User>,
        private jwtService: JwtService,
    ) { }

    async validateUser(login: string, password: string): Promise<any> {
        const user = await this.usersRepository.findOne({ where: { login } });

        if (user && user.password === password) {
            const { password, ...result } = user;
            return result;
        }
        return null;
    }

    async login(user: any) {
        const payload = { 
            username: user.login, 
            sub: user.id 
        };
        return {
            access_token: this.jwtService.sign(payload),
        };
    }
}