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sakura/libraries/Forum/Thread.php
2016-02-19 22:49:00 +01:00

435 lines
11 KiB
PHP

<?php
/**
* Holds the thread object class.
*
* @package Sakura
*/
namespace Sakura\Forum;
use Sakura\DB;
use Sakura\Utils;
/**
* Used to serve, create and update threads.
*
* @package Sakura
* @author Julian van de Groep <me@flash.moe>
*/
class Thread
{
/**
* The ID of this thread.
*
* @var int
*/
public $id = 0;
/**
* The ID of the forum this thread is a part of.
*
* @var int
*/
public $forum = 0;
/**
* Is this forum hidden from the listing?
*
* @var bool
*/
public $hidden = false;
/**
* The title of the thread.
*
* @var string
*/
public $title = "";
/**
* The UNIX timestamp of when this thread was created.
*
* @var int
*/
public $time = 0;
/**
* The UNIX timestamp of when this thread should be autolocked (currently unused).
*
* @var int
*/
public $timeLimit = 0;
/**
* The amount of times this thread has been viewed.
*
* @var int
*/
public $views = 0;
/**
* The status of this thread.
* 0 - Unlocked
* 1 - Locked
*
* @var int
*/
public $status = 0;
/**
* The UNIX timestamp of when the status was last changed.
*
* @var int
*/
public $statusChange = 0;
/**
* The thread type
* 0 - Normal thread
* 1 - Sticky thread
* 2 - Announcement
*
* @var int
*/
public $type = 0;
/**
* The ID of the forum this thread was a part of before the last move.
*
* @var int
*/
public $oldForum = 0;
/**
* The post object cache.
*
* @var array
*/
private $_posts = [];
/**
* A cached instance of opening post.
*
* @var Post
*/
private $_firstPost = null;
/**
* A cached instance of the last reply.
*
* @var Post
*/
private $_lastPost = null;
/**
* Constructor.
*
* @param mixed $threadId ID of the thread that should be constructed.
*/
public function __construct($threadId)
{
// Attempt to get the database row
$threadRow = DB::prepare('SELECT * FROM `{prefix}topics` WHERE `topic_id` = :id');
$threadRow->execute([
'id' => $threadId,
]);
$threadRow = $threadRow->fetch();
// Assign data if a row was returned
if ($threadRow) {
$this->id = $threadRow->topic_id;
$this->forum = $threadRow->forum_id;
$this->hidden = (bool) $threadRow->topic_hidden;
$this->title = $threadRow->topic_title;
$this->time = $threadRow->topic_time;
$this->timeLimit = $threadRow->topic_time_limit;
$this->views = $threadRow->topic_views;
$this->status = $threadRow->topic_status;
$this->statusChange = $threadRow->topic_status_change;
$this->type = $threadRow->topic_type;
$this->oldForum = $threadRow->topic_old_forum;
}
}
/**
* Create a new thread.
*
* @param mixed $forum ID of the forum this thread is part of.
* @param mixed $title Title of the thread.
* @param mixed $status Status of the thread.
* @param mixed $type Type of thread.
*
* @return self The new thread instance.
*/
public static function create($forum, $title, $status = 0, $type = 0)
{
// Create the database entry
DB::prepare('INSERT INTO `{prefix}topics` (`forum_id`, `topic_title`, `topic_time`, `topic_status`, `topic_type`) VALUES (:forum, :title, :time, :status, :type)')
->execute([
'forum' => $forum,
'title' => $title,
'time' => time(),
'status' => $status,
'type' => $type,
]);
// Return the thread object
return new Thread(DB::lastID());
}
/**
* Delete the current thread.
*/
public function delete()
{
// Delete all posts
DB::prepare('DELETE FROM `{prefix}posts` WHERE `topic_id` = :id')
->execute([
'id' => $this->id,
]);
// Delete thread meta
DB::prepare('DELETE FROM `{prefix}topics` WHERE `topic_id` = :id')
->execute([
'id' => $this->id,
]);
}
/**
* Move the thread.
*
* @param mixed $forum The new forum ID.
* @param mixed $setOld Remember the forum ID prior to the move for restoration.
*/
public function move($forum, $setOld = true)
{
// Update all posts
DB::prepare('UPDATE `{prefix}posts` SET `forum_id` = :forum WHERE `topic_id` = :thread')
->execute([
'forum' => $forum,
'thread' => $this->id,
]);
// Update thread meta
DB::prepare('UPDATE `{prefix}topics` SET `forum_id` = :forum, `topic_old_forum` = :old WHERE `topic_id` = :thread')
->execute([
'forum' => $forum,
'old' => ($setOld ? $this->forum : 0),
'thread' => $this->id,
]);
}
/**
* Update the thread data.
*
* @return self The updated thread.
*/
public function update()
{
// Update row
DB::prepare('UPDATE `{prefix}topics` SET `topic_hidden` = :hidden, `topic_title` = :title, `topic_time_limit` = :limit, `topic_status` = :status, `topic_status_change` = :change, `topic_type` = :type, `topic_old_forum` = :old WHERE `topic_id` = :id')
->execute([
'hidden' => $this->hidden,
'title' => $this->title,
'limit' => $this->timeLimit,
'status' => $this->status,
'change' => $this->statusChange,
'type' => $this->type,
'old' => $this->oldForum,
'id' => $this->id,
]);
// Return new object
return new Thread($this->id);
}
/**
* Get the replies to this thread.
*
* @return array Array containing Post instances.
*/
public function posts()
{
// Check if _posts is something
if (!count($this->_posts)) {
// Get all rows with the thread id
$postRows = DB::prepare('SELECT `post_id` FROM `{prefix}posts` WHERE `topic_id` = :thread');
$postRows->execute([
'thread' => $this->id,
]);
$postRows = $postRows->fetchAll();
// Create a storage array
$posts = [];
// Create new post objects for each post
foreach ($postRows as $post) {
$posts[$post->post_id] = new Post($post->post_id);
}
$this->_posts = $posts;
} else {
$posts = $this->_posts;
}
// Return the post objects
return $posts;
}
/**
* Get the opening post.
*
* @return Post A Post instance of the opening post.
*/
public function firstPost()
{
// Check if the cache var is set
if ($this->_firstPost !== null) {
return $this->_firstPost;
}
// Get the row from the database
$post = DB::prepare('SELECT `post_id` FROM `{prefix}posts` WHERE `topic_id` = :thread ORDER BY `post_id` LIMIT 1');
$post->execute([
'thread' => $this->id,
]);
$post = $post->fetch();
// Create the post class
$post = new Post($post ? $post->post_id : 0);
// Assign it to the cache var
$this->_firstPost = $post;
// Return
return $post;
}
/**
* Get the latest reply.
*
* @return Post A Post instance of the latest reply.
*/
public function lastPost()
{
// Check if the cache var is set
if ($this->_lastPost !== null) {
return $this->_lastPost;
}
// Get the row from the database
$post = DB::prepare('SELECT `post_id` FROM `{prefix}posts` WHERE `topic_id` = :thread ORDER BY `post_id` DESC LIMIT 1');
$post->execute([
'thread' => $this->id,
]);
$post = $post->fetch();
// Create the post class
$post = new Post($post ? $post->post_id : 0);
// Assign it to the cache var
$this->_lastPost = $post;
// Return
return $post;
}
/**
* Get the amount of replies.
*
* @return int The number of replies to this thread.
*/
public function replyCount()
{
$count = DB::prepare('SELECT * FROM `{prefix}posts` WHERE `topic_id` = :thread');
$count->execute([
'thread' => $this->id,
]);
return $count->rowCount();
}
/**
* Check if a user has read this thread before.
*
* @param mixed $user The id of the user in question.
*
* @return bool A boolean indicating the read status.
*/
public function unread($user)
{
// Attempt to get track row from the database
$track = DB::prepare('SELECT * FROM `{prefix}topics_track` WHERE `user_id` = :user AND `topic_id` = :thread AND `mark_time` > :last');
$track->execute([
'user' => $user,
'thread' => $this->id,
'last' => $this->lastPost()->time,
]);
// If nothing was returned it's obvious that the status is unread
if (!$track->rowCount()) {
return true;
}
// Else just return false meaning everything is read
return false;
}
/**
* Update the read status.
*
* @param mixed $user The id of the user in question.
*/
public function trackUpdate($user)
{
// Check if we already have a track record
$track = DB::prepare('SELECT * FROM `{prefix}topics_track` WHERE `user_id` = :user AND `topic_id` = :thread AND `forum_id` = :forum');
$track->execute([
'user' => $user,
'thread' => $this->id,
'forum' => $this->forum,
]);
// If so update it
if ($track->rowCount()) {
DB::prepare('UPDATE `{prefix}topics_track` SET `mark_time` = :time WHERE `user_id` = :user AND `topic_id` = :thread')
->execute([
'user' => $user,
'thread' => $this->id,
'time' => time(),
]);
} else {
// If not create a new record
DB::prepare('INSERT INTO `{prefix}topics_track` (`user_id`, `topic_id`, `forum_id`, `mark_time`) VALUES (:user, :thread, :forum, :time)')
->execute([
'user' => $user,
'thread' => $this->id,
'forum' => $this->forum,
'time' => time(),
]);
}
}
/**
* Update the view count.
*/
public function viewsUpdate()
{
DB::prepare('UPDATE `{prefix}topics` SET `topic_views` = :views WHERE `topic_id` = :thread')
->execute([
'views' => $this->views + 1,
'thread' => $this->id,
]);
}
/**
* Update the timestamp of when this thread was last replied to.
*/
public function lastUpdate()
{
DB::prepare('UPDATE `{prefix}topics` SET `topic_last_reply` = :last WHERE `topic_id` = :thread')
->execute([
'last' => time(),
'thread' => $this->id,
]);
}
}