sakura/_sakura/components/Comments.php

<?php
/*
 * A flexible comment system
 */

namespace Sakura;

class Comments
{
    public $comments = []; // Array containing comments
    private $commenters = []; // Array containing User objects
    public $category; // Comment category
    public $count = 0; // Amount of comments

    // Constructor
    public function __construct($category)
    {
        // Set category
        $this->category = $category;

        // Get the comments and assign them to $comments
        $comments = Database::fetch(
            'comments',
            true,
            [
                'comment_category' => [$this->category, '='],
                'comment_reply_to' => ['0', '='],
            ],
            ['comment_id', true]
        );

        // Feed them into the sorter
        $this->comments = $this->sortComments($comments);

    }

    // Sorting
    public function sortComments($comments)
    {

        // Create storage array
        $layer = [];

        // Sort comments
        foreach ($comments as $comment) {
            // Check if we already have an object for this user
            if (!array_key_exists($comment['comment_poster'], $this->commenters)) {
                // Create new object
                $this->commenters[$comment['comment_poster']] = new User($comment['comment_poster']);
            }

            // Attach the poster
            $comment['comment_poster'] = $this->commenters[$comment['comment_poster']];
            $comment['comment_text'] = Main::parseEmotes(Main::cleanString($comment['comment_text']));

            // Add post to posts array
            $layer[$comment['comment_id']] = $comment;

            // Up the comment count
            $this->count += 1;

            // Attempt to get replies from the database
            $replies = Database::fetch('comments', true, [
                'comment_category' => [$this->category, '='],
                'comment_reply_to' => [$comment['comment_id'], '='],
            ]);

            // Check if this was a reply to something
            if ($replies) {
                // Save the replies
                $layer[$comment['comment_id']]['comment_replies'] = $this->sortComments($replies);
            }
        }

        return $layer;

    }

    // Getting a single comment
    public function getComment($cid)
    {

        // Get from database
        return Database::fetch('comments', false, [
            'comment_id' => [$cid, '='],
        ]);

    }

    // Creating
    public function makeComment($uid, $reply, $content)
    {

        // Check if the comment is long enough
        if (strlen($content) < Configuration::getConfig('comment_min_length')) {
            return [0, 'TOO_SHORT'];
        }

        // Check if the comment isn't too long
        if (strlen($content) > Configuration::getConfig('comment_max_length')) {
            return [0, 'TOO_LONG'];
        }

        // Insert into database
        Database::insert('comments', [
            'comment_category' => $this->category,
            'comment_timestamp' => time(),
            'comment_poster' => $uid,
            'comment_reply_to' => (int) $reply,
            'comment_text' => $content,
        ]);

        // Return success
        return [1, 'SUCCESS'];

    }

    // Deleting
    public function removeComment($cid)
    {

        // Remove from database
        return Database::delete('comments', [
            'comment_id' => [$cid, '='],
        ]);

    }
}