<?
authorize();

/*********************************************************************\
//--------------Take Post--------------------------------------------//

The page that handles the backend of the 'edit post' function.

$_GET['action'] must be "takeedit" for this page to work.

It will be accompanied with:
	$_POST['post'] - the ID of the post
	$_POST['body']


\*********************************************************************/

include(SERVER_ROOT.'/classes/text.class.php'); // Text formatting class
$Text = new TEXT;

// Quick SQL injection check
if (!$_POST['post'] || !is_number($_POST['post']) || !is_number($_POST['key'])) {
	error(0,true);
}
// End injection check

if ($LoggedUser['DisablePosting']) {
	error('Your posting privileges have been removed.');
}

// Variables for database input
$UserID = $LoggedUser['ID'];
$Body = $_POST['body']; //Don't URL Decode
$PostID = $_POST['post'];
$Key = $_POST['key'];
$SQLTime = sqltime();
$DoPM = isset($_POST['pm']) ? $_POST['pm'] : 0;

// Mainly
$DB->query("
	SELECT
		p.Body,
		p.AuthorID,
		p.TopicID,
		t.IsLocked,
		t.ForumID,
		f.MinClassWrite,
		CEIL((
			SELECT COUNT(p2.ID)
			FROM forums_posts AS p2
			WHERE p2.TopicID = p.TopicID
				AND p2.ID <= '$PostID'
			) / ".POSTS_PER_PAGE."
		) AS Page
	FROM forums_posts AS p
		JOIN forums_topics AS t ON p.TopicID = t.ID
		JOIN forums AS f ON t.ForumID = f.ID
	WHERE p.ID = '$PostID'");
list($OldBody, $AuthorID, $TopicID, $IsLocked, $ForumID, $MinClassWrite, $Page) = $DB->next_record();

// Make sure they aren't trying to edit posts they shouldn't
// We use die() here instead of error() because whatever we spit out is displayed to the user in the box where his forum post is
if (!Forums::check_forumperm($ForumID, 'Write') || ($IsLocked && !check_perms('site_moderate_forums'))) {
	error('Either the thread is locked, or you lack the permission to edit this post.', true);
}
if ($UserID != $AuthorID && !check_perms('site_moderate_forums')) {
	error(403,true);
}
if ($LoggedUser['DisablePosting']) {
	error('Your posting privileges have been removed.', true);
}
if (!$DB->has_results()) {
	error(404,true);
}

// Send a PM to the user to notify them of the edit
if ($UserID != $AuthorID && $DoPM) {
	$PMSubject = "Your post #$PostID has been edited";
	$PMurl = site_url()."forums.php?action=viewthread&postid=$PostID#post$PostID";
	$ProfLink = '[url='.site_url()."user.php?id=$UserID]".$LoggedUser['Username'].'[/url]';
	$PMBody = "One of your posts has been edited by $ProfLink: [url]{$PMurl}[/url]";
	Misc::send_pm($AuthorID, 0, $PMSubject, $PMBody);
}

// Perform the update
$DB->query("
	UPDATE forums_posts
	SET
		Body = '" . db_string($Body) . "',
		EditedUserID = '$UserID',
		EditedTime = '$SQLTime'
	WHERE ID = '$PostID'");

$CatalogueID = floor((POSTS_PER_PAGE * $Page - POSTS_PER_PAGE) / THREAD_CATALOGUE);
$Cache->begin_transaction("thread_$TopicID"."_catalogue_$CatalogueID");
if ($Cache->MemcacheDBArray[$Key]['ID'] != $PostID) {
	$Cache->cancel_transaction();
	$Cache->delete_value("thread_$TopicID"."_catalogue_$CatalogueID"); //just clear the cache for would be cache-screwer-uppers
} else {
	$Cache->update_row($Key, array(
			'ID'=>$Cache->MemcacheDBArray[$Key]['ID'],
			'AuthorID'=>$Cache->MemcacheDBArray[$Key]['AuthorID'],
			'AddedTime'=>$Cache->MemcacheDBArray[$Key]['AddedTime'],
			'Body'=>$Body, //Don't url decode.
			'EditedUserID'=>$LoggedUser['ID'],
			'EditedTime'=>$SQLTime,
			'Username'=>$LoggedUser['Username']
			));
	$Cache->commit_transaction(3600 * 24 * 5);
}
$ThreadInfo = Forums::get_thread_info($TopicID);
if ($ThreadInfo === null) {
	error(404);
}
if ($ThreadInfo['StickyPostID'] == $PostID) {
	$ThreadInfo['StickyPost']['Body'] = $Body;
	$ThreadInfo['StickyPost']['EditedUserID'] = $LoggedUser['ID'];
	$ThreadInfo['StickyPost']['EditedTime'] = $SQLTime;
	$Cache->cache_value("thread_$TopicID".'_info', $ThreadInfo, 0);
}

$DB->query("
	INSERT INTO comments_edits
		(Page, PostID, EditUser, EditTime, Body)
	VALUES
		('forums', $PostID, $UserID, '$SQLTime', '".db_string($OldBody)."')");
$Cache->delete_value("forums_edits_$PostID");
// This gets sent to the browser, which echoes it in place of the old body
echo $Text->full_format($Body);
?>
<br /><br />Last edited by <a href="user.php?id=<?=$LoggedUser['ID']?>"><?=$LoggedUser['Username']?></a> Just now