<?php

include("SplEnum.class.php");
include("IDBConnecton.class.php");

class Enum extends SplEnum {
    const TUTOR = 0;
    const STUDENT = 1;
    const PARENTS = 2;
}

class Authentication implements IDBConnecton {

    private $db_name;
	private $db_user;
	private $db_pass;
	private $db_host;

    private $email;
    private $password;

    function __construct(){
        $this->db_name = 'the_genius';
        $this->db_user = 'root';
        $this->db_pass = '';
        $this->db_host = 'localhost';

        // Set data into variables
        if(isset($_POST["email"]) == TRUE && isset($_POST["password"]) == TRUE){
            $this->setEmail($_POST["email"]);
            $this->setPassword($_POST["password"]);
        }

        // Create connection to database and query data
        $this->dbConnect($this->db_host, $this->db_user, $this->db_pass, $this->db_name);
    }

    function setEmail($email){
        $this->email = $email;
    }

    function setPassword($password){
        $this->password = hash('sha512', $password);
    }

    function dbConnect($db_host, $db_user, $db_pass, $db_name) {
        $conn = new mysqli($this->db_host, $this->db_user, $this->db_pass, $this->db_name);
        if ($conn->connect_error) {
            die("Connection failed: " . $conn->connect_error);
        }

        $sql = "SELECT user.user_email, user.user_password, user_roles.user_roles_type
                FROM user
                INNER JOIN user_roles ON user.user_id = user_roles.user_id
                WHERE user.user_email = '$this->email' AND user.user_password = '$this->password'";

            $query = $conn->query($sql);
            while($result = $query->fetch_assoc())
            {
                if ($result["user_email"] == $this->email && $result["user_password"] == $this->password) {

                    // CREATE NEW OBJECT AND CASTING STRING FROM user_roles_type FROM DATABASE TO INT
                    $isRoles = new Enum((int)$result["user_roles_type"]);

                    // CHECK USER ROLES
                    if ($isRoles->is(Enum::TUTOR))
                    {
                        echo "You are a tutor !!!";
                    } else if ($isRoles->is(Enum::STUDENT)) {
                        echo "You are a student !!!";
                    } else {
                        echo "You are a guardian or parents !!!";
                    }

                } else {
                }
            }
    }
}

new Authentication();
?>