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<?php session_start() ?>
<!DOCTYPE html>
<html lang="en">
<head>
	<title>Create a thread - cflip.net forum</title>
<?php include_once 'includes/templates/head.php'; ?>
</head>
<body>
<?php include_once 'includes/templates/header.php' ?>
	<h2>Create a new thread</h2>
<?php
include_once 'includes/Session.php';
include_once 'includes/error.php';
if (!Session::get()->is_signed_in()) {
	trigger_error('You must be <a href="signin.php">signed in</a> to create a thread.');
	exit();
}
?>
	<form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?>" method="post">
		<label for="thread_subject">Subject: </label><br>
		<input type="text" name="thread_subject"><br>
		<label for="thread_cat">Category: </label><br>
		<?php
		include_once './includes/model/Category.php';

		$categories = Category::get_all_categories();

		if (count($categories) == 0) {
			trigger_error('There are no categories to post to!');
		} else {
			echo '<select name="thread_cat">';

			foreach ($categories as $category) {
				echo '<option value="' . $category->id . '">' . $category->name . '</option>';
			}

			echo '</select><br>';
		}
		?>
		<label for="post_content">Write your post: </label><br>
		<textarea name="post_content"></textarea><br>
		<input type="submit" name="submit">
	</form>
<?php
include_once './includes/model/Post.php';
include_once './includes/model/Thread.php';
include_once './includes/error.php';

if ($_SERVER['REQUEST_METHOD'] == 'POST') {
	$post_content = filter_input(INPUT_POST, 'post_content', FILTER_SANITIZE_STRING);
	$thread_subject = filter_input(INPUT_POST, 'thread_subject', FILTER_SANITIZE_STRING);
	$thread_cat = filter_input(INPUT_POST, 'thread_cat', FILTER_SANITIZE_NUMBER_INT);

	$errors = array();
	if (empty($thread_subject) or !$thread_subject) {
		$errors[] = 'Thread subject cannot be empty';
	}
	if (empty($post_content) or !$post_content) {
		$errors[] = 'Thread body cannot be empty';
	}

	if (!empty($errors)) {
		$errstr = 'Please check the following problems: <ul>';
		foreach ($errors as $err) {
			$errstr .= '<li>' . $err . '</li>';
		}
		$errstr .= '</ul>';
		trigger_error($errstr);
	} else {
		$thread_id = Thread::create($thread_subject, $thread_cat);
		Post::create($post_content, $thread_id, $thread_cat);

		header("Location: viewthread.php?id=" . $thread_id);
	}
}
?>
</body>
</html>