
<?php
require_once 'lib/common.php';
require_once 'lib/view-post.php';

session_start();

// Get the post ID
if (isset($_GET['post_id']))
{
    $postId = $_GET['post_id'];
}
else
{
    // So we always have a post ID var defined
    $postId = 0;
}

// Connect to the database, run a query, handle errors
$pdo = getPDO();
$row = getPostRow($pdo, $postId);

// If the post does not exist, let's deal with that here
if (!$row)
{
    redirectAndExit('index.php?not-found=1');
}

$errors = null;
if ($_POST)
{
    $commentData = array(
        'name' => $_POST['comment-name'],
        'website' => $_POST['comment-website'],
        'text' => $_POST['comment-text'],
    );
    $errors = addCommentToPost(
        $pdo,
        $postId,
        $commentData
    );

    // If there are no errors, redirect back to self and redisplay
    if (!$errors)
    {
        redirectAndExit('view-post.php?post_id=' . $postId);
    }
}
else
{
    $commentData = array(
        'name' => '',
        'website' => '',
        'text' => '',
    );
}

?>
<!DOCTYPE html>
<html>
    <head>
        <title>
            A blog application |
            <?php echo htmlEscape($row['title']) ?>
        </title>
        <?php require 'templates/head.php' ?>
    </head>
    <body>
        <?php require 'templates/title.php' ?>

        <div class="post">
            <h2>
                <?php echo htmlEscape($row['title']) ?>
            </h2>
            <div class="date">
                <?php echo convertSqlDate($row['created_at']) ?>
            </div>

            <?php // This is already escaped, so doesn't need further escaping ?>
            <?php echo convertNewlinesToParagraphs($row['body']) ?>
        </div>

        <div class="comment-list">
            <h3><?php echo countCommentsForPost($postId) ?> comments</h3>

            <?php foreach (getCommentsForPost($postId) as $comment): ?>
                <div class="comment">
                    <div class="comment-meta">
                        Comment from
                        <?php echo htmlEscape($comment['name']) ?>
                        on
                        <?php echo convertSqlDate($comment['created_at']) ?>
                    </div>
                    <div class="comment-body">
                        <?php // This is already escaped ?>
                        <?php echo convertNewlinesToParagraphs($comment['text']) ?>
                    </div>
                </div>
            <?php endforeach ?>
        </div>

        <?php require 'templates/comment-form.php' ?>
    </body>
</html>