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<?php

session_start();

include 'functions.php';

if (!isset($_SESSION['is_logged'])) {

	if (!isset($_REQUEST['log_in'])) {

		echo '<html>
		      <link rel = "stylesheet" type = "text/css" href = "style.css">
		      <body>
		      <div class = "log_in_window">
		      <form action = "'.$_SERVER['SCRIPT_NAME'].'" method = "POST">
			    <input class = "input_nick" type = "text" name="nick" value = ""><br>
			    <input class = "log_in" type = "submit" name = "log_in" value = "Войти">
		      </form>
		      </div>
		      </body>
		      </html>';

	} else {

		db_connect();
		$_SESSION['is_logged'] = 1;
		$_SESSION['nick'] = $_REQUEST['nick'];
		db_user_status($_SESSION['nick'], "online");
		db_close();
		exit("<meta http-equiv = 'refresh' content ='0; url = $_SERVER[PHP_SELF]'>");

	}

} else {

	db_connect();

	$message = db_read_message();
	$online = db_user_online();

	header('refresh: 30;url = '.$_SERVER['SCRIPT_NAME'].'');

	echo '<html>
	      <link rel = "stylesheet" type = "text/css" href = "style.css">
	      <body>
	      <div>
	      <form action = "'.$_SERVER['SCRIPT_NAME'].'" method = "POST">
		    <div class="chat_field">';


	for ($i = 0; $i < db_get_post_count(); $i++) {
		echo $message[$i].'<br>';

	}

	echo '	    </div>
	   	    <div class="users_field">';


	for ($i = 0; $i < db_get_post_count(); $i++) {
		echo $online[$i].'<br>';

	}

	echo '	    </div><br>
		    <input class = "message_field" type="text" name="message_field" value="">
		    <input class = "post_message" type="submit" name="post_message" value="ОК">
		    <input class = "log_out" type="submit" name="log_out" value="Выйти">
	      </form>
	      </div>
	      </body>
	      </html>';

	if (isset($_REQUEST['log_out'])) {

		db_user_status($_SESSION['nick'], "offline");
		session_destroy();
		db_close();
		exit("<meta http-equiv = 'refresh' content = '0; url = $_SERVER[PHP_SELF]'>");

	}

	if (isset($_REQUEST['post_message'])) {

		if ($_REQUEST['message_field']) {
			db_post_message($_SESSION['nick'], $_REQUEST['message_field']);
			exit("<meta http-equiv = 'refresh' content = '0; url = $_SERVER[PHP_SELF]'>");
		}

	}

}

?>