<?php 
	session_start(); 
	include "db_conn.php";

	if (isset($_POST['uname']) && isset($_POST['password'])
		&& isset($_POST['name']) && isset($_POST['re_password'])) {

		function validate($data){
		$data = trim($data);
		$data = stripslashes($data);
		$data = htmlspecialchars($data);
		return $data;
		}

		$uname = validate($_POST['uname']);
		$pass = validate($_POST['password']);

		$re_pass = validate($_POST['re_password']);
		$name = validate($_POST['name']);

		$user_data = 'uname='. $uname. '&name='. $name;


		if (empty($uname)) {
			header("Location: signup.php?error=Felhasználónév szükséges!&$user_data");
			exit();
		}else if(empty($pass)){
			header("Location: signup.php?error=Jelszó szükséges!&$user_data");
			exit();
		}
		else if(empty($re_pass)){
			header("Location: signup.php?error=Jelszó ismételt megadása szükséges!&$user_data");
			exit();
		}

		else if(empty($name)){
			header("Location: signup.php?error=Név szükséges!&$user_data");
			exit();
		}

		else if($pass !== $re_pass){
			header("Location: signup.php?error=A két jelszó nem egyezik!&$user_data");
			exit();
		}

		else{

			// hashing the password
			$pass = md5($pass);

			$sql = "SELECT * FROM users WHERE user_name='$uname' ";
			$result = mysqli_query($conn, $sql);

			if (mysqli_num_rows($result) > 0) {
				header("Location: signup.php?error=A felhasználónév már foglalt, próbálj másikat!&$user_data");
				exit();
			}else {
			$sql2 = "INSERT INTO users(user_name, password, name) VALUES('$uname', '$pass', '$name')";
			$result2 = mysqli_query($conn, $sql2);
			if ($result2) {
				header("Location: signup.php?success=A fiókod sikeresen létrehozva!");
				exit();
			}else {
					header("Location: signup.php?error=Ismeretlen hiba lépett fel!&$user_data");
					exit();
			}
			}
		}
		
	}else{
		header("Location: signup.php");
		exit();
	}
?>