Change terminology from topics to threads

1 files changed, 99 insertions, 0 deletions

diff --git a/create_thread.php b/create_thread.php
new file mode 100644
index 0000000..3f15f63
--- /dev/null
+++ b/create_thread.php
@@ -0,0 +1,99 @@
+<?php
+
+include_once 'header.php';
+
+echo '<section><h2>Create a new thread</h2>';
+
+if (!isset($_SESSION['signed_in'])) {
+	die('You must be <a href="signin.php">signed in</a> to create a thread.');
+} 
+?>
+
+<form action="<?php echo htmlspecialchars($_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/db_inc.php';
+
+		$sql = "SELECT cat_id, cat_name, cat_description FROM categories";
+		$result = mysqli_query($dbc, $sql);
+
+		if (!$result) {
+			die('Error trying to fetch category list: ' . mysqli_error($dbc));
+		} 
+
+		if (mysqli_num_rows($result) == 0) {
+			die('There are currently no categories to post to.');
+		} 
+
+		echo '<select name="thread_cat">';
+
+		while ($row = mysqli_fetch_assoc($result)) {
+			echo '<option value="' . $row['cat_id'] . '">' . $row['cat_name'] . '</option>';
+		}
+
+		echo '</select><br>';
+	?>
+	<label for="post_content">Write your post: </label><br>
+	<textarea name="post_content"></textarea><br>
+	<input type="submit" name="submit">
+</form>
+</section>
+
+<?php
+include_once 'includes/db_inc.php';
+
+function create_thread($dbc, $thread_subject, $thread_cat, $thread_author) {
+	$sql = "INSERT INTO threads(thread_subject, thread_date, thread_cat, thread_author) VALUES(?, NOW(), ?, ?);";
+	$stmt = mysqli_stmt_init($dbc);
+
+	if (!mysqli_stmt_prepare($stmt, $sql)) {
+		die('Could not create thread due to internal error: ' . mysqli_error($dbc));
+	}
+
+	mysqli_stmt_bind_param($stmt, "sii", $thread_subject, $thread_cat, $thread_author);
+	mysqli_stmt_execute($stmt);
+	mysqli_stmt_close($stmt);
+}
+
+function create_post($dbc, $post_content, $post_thread, $post_author) {
+	$sql = "INSERT INTO posts(post_content, post_date, post_thread, post_author) VALUES(?, NOW(), ?, ?);";
+	$stmt = mysqli_stmt_init($dbc);
+
+	if (!mysqli_stmt_prepare($stmt, $sql)) {
+		die('Could not create thread due to internal error: ' . mysqli_error($dbc));
+	}
+
+	mysqli_stmt_bind_param($stmt, "sii", $post_content, $post_thread, $post_author);
+	mysqli_stmt_execute($stmt);
+	mysqli_stmt_close($stmt);
+}
+
+function validate($data)  {
+	$data = trim($data);
+	$data = stripslashes($data);
+	$data = htmlspecialchars($data);
+	return $data;
+}
+
+if ($_SERVER['REQUEST_METHOD'] == 'POST') {
+	$post_content = validate($_POST['post_content']);
+	$thread_subject = validate($_POST['thread_subject']);
+	$thread_cat = validate($_POST['thread_cat']);
+	$user_id = validate($_SESSION['user_id']);
+
+	create_thread($dbc, $thread_subject, $thread_cat, $user_id);
+	$thread_id = mysqli_insert_id($dbc);
+	create_post($dbc, $post_content, $thread_id, $user_id);
+
+	if (!$post_result) {
+		echo 'An error occurred creating your post: ' . mysqli_error($dbc);
+	}
+
+	header("Location: thread.php?id=" . $thread_id);
+}
+
+?>
+
+<?php include_once 'footer.php';?>
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