<?php
session_start();

include('../common/connect.php');

// Now we check if the data from the login form was submitted, isset() will check if the data exists.
if ( !isset($_POST['username'], $_POST['password']) ) {
	// Could not get the data that should have been sent.
	exit('Please fill both the username and password fields!');
}

// Prepare our SQL, preparing the SQL statement will prevent SQL injection.
if ($stmt = $con->prepare('SELECT activation_code, id, password FROM administrator WHERE username = ?')) {
	// Bind parameters (s = string, i = int, b = blob, etc), in our case the username is a string so we use "s"
	$stmt->bind_param('s', $_POST['username']);
	$stmt->execute();
	// Store the result so we can check if the account exists in the database.
	$stmt->store_result();

    if ($stmt->num_rows > 0) {
        $stmt->bind_result($activation_code, $id, $password);
        $stmt->fetch();
        // Account exists, now we verify the password.
        // Note: remember to use password_hash in your registration file to store the hashed passwords.

        if ($activation_code == 'activated') {
            // account is activated
            // Display home page etc
            if (password_verify($_POST['password'], $password)) {
                // Verification success! User has logged-in!
                // Create sessions, so we know the user is logged in, they basically act like cookies but remember the data on the server.
                session_regenerate_id();
                $_SESSION['loggedin'] = TRUE;
                $_SESSION['name'] = $_POST['username'];
                $_SESSION['id'] = $id;
                header('Location: home.php');
            } else {
                // Incorrect password
                echo 'Incorrect username and/or password!';
            }
        } else {
            // account is not activated
            // redirect user or display an error
            echo 'Account not activated!';
        }

    } else {
        // Incorrect username
        echo 'Incorrect username and/or password!';
    }

	$stmt->close();
}
?>