<?php
namespace ProVM\Crypto\Common\Service;

use Carbon\Carbon;
use ProVM\Common\Factory\Model as ModelFactory;
use ProVM\Crypt\User;
use ProVM\Crypt\Login;

class Auth {
  protected $login_time;
  public function __construct(int $login_time) {
    $this->login_time = $login_time;
  }
  protected $factory;
  public function setFactory(ModelFactory $factory) {
    $this->factory = $factory;
  }
  protected function createToken() {
    return password_hash(random_bytes(100), \PASSWORD_BCRYPT);
  }
  public function login(string $username, string $password) {
    $user = $this->factory->find(User::class)->where([['name', $username]])->one();
    if (!$user) {
      return false;
    }
    if (!password_verify($password, $user->password)) {
      return false;
    }
    $now = Carbon::now();
    $login = $this->factory->find(Login::class)->where([['user_id', $user->id], ['date_time', $now->copy()->subSeconds($this->login_time), '>=']])->one();
    if (!$login) {
      $token = $this->createToken();
      $data = [
        'user_id' => $user->id,
        'token' => $token,
        'date_time' => $now->format('Y-m-d H:i:s')
      ];
      $login = $this->factory->create(Login::class, $data);
    } else {
      $login->date($now);
    }
    $login->save();
    return $token;
  }
  public function isLoggedIn($token) {
    $login = $this->factory->find(Login::class)->where([['token', $token]])->one();
    return $login->user();
  }
}