import { Injectable, UnauthorizedException } from '@nestjs/common';
import { UserEntity } from './models/entities/user.entity';
import { CipherService } from '../helper/cipher.service';
import { PrismaService } from '../helper/prisma.service';
import { JwtScope } from './models/enums/jwt-scope';
import { JwtService } from '@nestjs/jwt';
import { UsersService } from '../../../modules/users/users.service';

@Injectable()
export class LoginService {
  constructor(
    private readonly prismaService: PrismaService,
    private readonly cipherService: CipherService,
    private readonly jwtService: JwtService,
    private readonly usersService: UsersService,
  ) {}

  async validateUser(email: string, password: string): Promise<UserEntity> {
    const user: UserEntity = await this.usersService.getUserByEmail(email);
    if (!this.cipherService.comparePassword(password, user.password))
      throw new UnauthorizedException('Invalid password');
    return user;
  }

  async isUserVerified(userId: string): Promise<boolean> {
    const user: UserEntity = await this.usersService.getUserById(userId);
    return user.verified;
  }

  generateToken(userId: string, userTokenId: string, scope: JwtScope): string {
    return this.jwtService.sign(
      {
        scope,
      },
      {
        subject: userId,
        expiresIn: scope !== JwtScope.USAGE ? '5m' : '7d',
        jwtid: userTokenId,
      },
    );
  }
}