import bcrypt from 'bcryptjs'
import UserRepository from '../repositories/userRepository'
import prisma from '../utilities/prisma'
import { User } from '@prisma/client'

/**
 * User service
 * Handles user login and registration
 * @class UserService
 */
class UserService {
  /**
   * Login user
   * @param username
   * @param password
   */
  async login(username: string, password: string): Promise<boolean | User> {
    const user = await UserRepository.getByUsername(username)
    if (!user) {
      return false
    }

    const passwordMatch = await bcrypt.compare(password, user.password)
    if (!passwordMatch) {
      return false
    }

    return user
  }

  /**
   * Register user
   * @param username
   * @param password
   */
  async register(username: string, email: string, password: string): Promise<boolean | User> {
    const user = await UserRepository.getByUsername(username)
    if (user) {
      return false
    }

    const userByEmail = await UserRepository.getByEmail(email)
    if (userByEmail) {
      return false
    }

    const hashedPassword = await bcrypt.hash(password, 10)
    return prisma.user.create({
      data: {
        username,
        email,
        password: hashedPassword
      }
    })
  }
}

export default UserService