if (isset($_SESSION['user']) == false) {
    header("location: login.php");
}
$myUser = $_SESSION['user'];
if ($_SERVER['REQUEST_METHOD'] == "GET") {
    if (isset($_GET['userId'])) {
        $userIdToShow = $_GET['user'];
        $userToShow = User::getUserById($userIdToShow);
    } else {
        $userToShow = $myUser;
    }
    $userIdToShow = $_GET['userId'];
    $userToShow = User::getUserById($userIdToShow);
    if ($userToShow != false) {
        echo "<br>Strona usera {$userToShow->getEmail()}.<br><br>";
        if ($myUser->getId() != $userIdToShow) {
            echo "\n                <a href='send_message.php?userId={$userIdToShow}'><button>Send a message to {$userToShow->getEmail()}</button></a><br><br>\n                ";
        }
        if (isset($msg)) {
            echo $msg . "<br><br>";
        }
        $userTweets = User::getAllTweets($userIdToShow);
        foreach ($userTweets as $tweet) {
            echo "Tweet:<br>";
            echo "Text: {$tweet->getText()}<br>";
            echo "<a href='show_tweet.php?tweet_id={$tweet->getId()}'>Show Tweet.</a><br>";
        }
    } else {
        echo "<br>Nie ma takiego usera.";
    }
}