mirror of
https://github.com/WhatCD/Gazelle.git
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396 lines
13 KiB
PHP
396 lines
13 KiB
PHP
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<?
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class Comments {
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/*
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* For all functions:
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* $Page = 'artist', 'collages', 'requests' or 'torrents'
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* $PageID = ArtistID, CollageID, RequestID or GroupID, respectively
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*/
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/**
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* Post a comment on an artist, request or torrent page.
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* @param string $Page
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* @param int $PageID
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* @param string $Body
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* @return int ID of the new comment
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*/
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public static function post($Page, $PageID, $Body) {
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$QueryID = G::$DB->get_query_id();
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G::$DB->query("
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SELECT
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CEIL(
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(
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SELECT COUNT(ID)+1
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FROM comments
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WHERE Page = '$Page'
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AND PageID = $PageID
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)/" . TORRENT_COMMENTS_PER_PAGE . "
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) AS Pages");
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list($Pages) = G::$DB->next_record();
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G::$DB->query("
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INSERT INTO comments (Page, PageID, AuthorID, AddedTime, Body)
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VALUES ('$Page', $PageID, " . G::$LoggedUser['ID'] . ", '" . sqltime() . "', '" . db_string($Body) . "')");
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$PostID = G::$DB->inserted_id();
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$CatalogueID = floor((TORRENT_COMMENTS_PER_PAGE * $Pages - TORRENT_COMMENTS_PER_PAGE) / THREAD_CATALOGUE);
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G::$Cache->delete_value($Page.'_comments_'.$PageID.'_catalogue_'.$CatalogueID);
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G::$Cache->delete_value($Page.'_comments_'.$PageID);
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Subscriptions::flush_subscriptions($Page, $PageID);
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Subscriptions::quote_notify($Body, $PostID, $Page, $PageID);
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G::$DB->set_query_id($QueryID);
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return $PostID;
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}
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/**
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* Edit a comment
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* @param int $PostID
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* @param string $NewBody
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* @todo move permission check out of here/remove hardcoded error(404)
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*/
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public static function edit($PostID, $NewBody) {
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$QueryID = G::$DB->get_query_id();
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G::$DB->query("
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SELECT
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Body,
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AuthorID,
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Page,
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PageID,
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AddedTime
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FROM comments
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WHERE ID = $PostID");
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if (!G::$DB->has_results()) {
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return false;
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}
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list($OldBody, $AuthorID, $Page, $PageID, $AddedTime) = G::$DB->next_record();
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if (G::$LoggedUser['ID'] != $AuthorID && !check_perms('site_moderate_forums')) {
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return false;
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}
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G::$DB->query("
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SELECT CEIL(COUNT(ID) / " . TORRENT_COMMENTS_PER_PAGE . ") AS Page
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FROM comments
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WHERE Page = '$Page'
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AND PageID = $PageID
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AND ID <= $PostID");
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list($CommPage) = G::$DB->next_record();
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// Perform the update
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G::$DB->query("
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UPDATE comments
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SET
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Body = '" . db_string($NewBody) . "',
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EditedUserID = " . G::$LoggedUser['ID'] . ",
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EditedTime = '" . sqltime() . "'
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WHERE ID = $PostID");
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// Update the cache
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$CatalogueID = floor((TORRENT_COMMENTS_PER_PAGE * $CommPage - TORRENT_COMMENTS_PER_PAGE) / THREAD_CATALOGUE);
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G::$Cache->delete_value($Page . '_comments_' . $PageID . '_catalogue_' . $CatalogueID);
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if ($Page == 'collages') {
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// On collages, we also need to clear the collage key (collage_$CollageID), because it has the comments in it... (why??)
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G::$Cache->delete_value('collage_' . $PageID);
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}
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G::$DB->query("
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INSERT INTO comments_edits (Page, PostID, EditUser, EditTime, Body)
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VALUES ('$Page', $PostID, " . G::$LoggedUser['ID'] . ", '" . sqltime() . "', '" . db_string($OldBody) . "')");
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G::$DB->set_query_id($QueryID);
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return true; // TODO: this should reflect whether or not the update was actually successful, e.g. by checking G::$DB->affected_rows after the UPDATE query
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}
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/**
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* Delete a comment
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* @param int $PostID
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*/
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public static function delete($PostID) {
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$QueryID = G::$DB->get_query_id();
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// Get page, pageid
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G::$DB->query("SELECT Page, PageID FROM comments WHERE ID = $PostID");
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if (!G::$DB->has_results()) {
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// no such comment?
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G::$DB->set_query_id($QueryID);
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return false;
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}
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list ($Page, $PageID) = G::$DB->next_record();
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// get number of pages
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G::$DB->query("
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SELECT
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CEIL(COUNT(ID) / " . TORRENT_COMMENTS_PER_PAGE . ") AS Pages,
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CEIL(SUM(IF(ID <= $PostID, 1, 0)) / " . TORRENT_COMMENTS_PER_PAGE . ") AS Page
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FROM comments
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WHERE Page = '$Page' AND PageID = $PageID
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GROUP BY PageID");
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if (!G::$DB->has_results()) {
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// the comment $PostID was probably not posted on $Page
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G::$DB->set_query_id($QueryID);
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return false;
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}
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list($CommPages, $CommPage) = G::$DB->next_record();
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// $CommPages = number of pages in the thread
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// $CommPage = which page the post is on
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// These are set for cache clearing.
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G::$DB->query("DELETE FROM comments WHERE ID = $PostID");
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G::$DB->query("DELETE FROM comments_edits WHERE Page = '$Page' AND PostID = $PostID");
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G::$DB->query("DELETE FROM users_notify_quoted WHERE Page = '$Page' AND PostID = $PostID");
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Subscriptions::flush_subscriptions($Page, $PageID);
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Subscriptions::flush_quote_notifications($Page, $PageID);
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//We need to clear all subsequential catalogues as they've all been bumped with the absence of this post
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$ThisCatalogue = floor((TORRENT_COMMENTS_PER_PAGE * $CommPage - TORRENT_COMMENTS_PER_PAGE) / THREAD_CATALOGUE);
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$LastCatalogue = floor((TORRENT_COMMENTS_PER_PAGE * $CommPages - TORRENT_COMMENTS_PER_PAGE) / THREAD_CATALOGUE);
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for ($i = $ThisCatalogue; $i <= $LastCatalogue; ++$i) {
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G::$Cache->delete_value($Page . '_comments_' . $PageID . '_catalogue_' . $i);
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}
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G::$Cache->delete_value($Page . '_comments_' . $PageID);
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if ($Page == 'collages') {
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// On collages, we also need to clear the collage key (collage_$CollageID), because it has the comments in it... (why??)
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G::$Cache->delete_value('collage_' . $PageID);
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}
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G::$DB->set_query_id($QueryID);
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return true;
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}
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/**
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* Get the URL to a comment, already knowing the Page and PostID
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* @param string $Page
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* @param int $PageID
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* @param int $PostID
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* @return string|bool The URL to the comment or false on error
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*/
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public static function get_url($Page, $PageID, $PostID = null) {
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$Post = (!empty($PostID) ? "&postid=$PostID#post$PostID" : '');
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switch ($Page) {
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case 'artist':
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return "artist.php?id=$PageID$Post";
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case 'collages':
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return "collages.php?action=comments&collageid=$PageID$Post";
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case 'requests':
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return "requests.php?action=view&id=$PageID$Post";
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case 'torrents':
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return "torrents.php?id=$PageID$Post";
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default:
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return false;
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}
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}
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/**
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* Get the URL to a comment
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* @param int $PostID
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* @return string|bool The URL to the comment or false on error
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*/
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public static function get_url_query($PostID) {
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$QueryID = G::$DB->get_query_id();
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G::$DB->query("SELECT Page, PageID FROM comments WHERE ID = $PostID");
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if (!G::$DB->has_results()) {
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error(404);
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}
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list($Page, $PageID) = G::$DB->next_record();
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G::$DB->set_query_id($QueryID);
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return self::get_url($Page, $PageID, $PostID);
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}
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/**
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* Load a page's comments. This takes care of `postid` and (indirectly) `page` parameters passed in $_GET.
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* Quote notifications and last read are also handled here, unless $HandleSubscriptions = false is passed.
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* @param string $Page
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* @param int $PageID
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* @param bool $HandleSubscriptions Whether or not to handle subscriptions (last read & quote notifications)
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* @return array ($NumComments, $Page, $Thread, $LastRead)
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* $NumComments: the total number of comments on this artist/request/torrent group
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* $Page: the page we're currently on
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* $Thread: an array of all posts on this page
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* $LastRead: ID of the last comment read by the current user in this thread;
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* will be false if $HandleSubscriptions == false or if there are no comments on this page
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*/
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public static function load($Page, $PageID, $HandleSubscriptions = true) {
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$QueryID = G::$DB->get_query_id();
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// Get the total number of comments
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$NumComments = G::$Cache->get_value($Page.'_comments_'.$PageID);
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if ($NumComments === false) {
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G::$DB->query("
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SELECT COUNT(ID)
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FROM comments
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WHERE Page = '$Page'
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AND PageID = $PageID");
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list($NumComments) = G::$DB->next_record();
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G::$Cache->cache_value($Page.'_comments_'.$PageID, $NumComments, 0);
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}
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// If a postid was passed, we need to determine which page that comment is on.
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// Format::page_limit handles a potential $_GET['page']
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if (isset($_GET['postid']) && is_number($_GET['postid']) && $NumComments > TORRENT_COMMENTS_PER_PAGE) {
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G::$DB->query("
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SELECT COUNT(ID)
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FROM comments
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WHERE Page = '$Page'
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AND PageID = $PageID
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AND ID <= $_GET[postid]");
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list($PostNum) = G::$DB->next_record();
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list($CommPage, $Limit) = Format::page_limit(TORRENT_COMMENTS_PER_PAGE, $PostNum);
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} else {
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list($CommPage, $Limit) = Format::page_limit(TORRENT_COMMENTS_PER_PAGE, $NumComments);
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}
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// Get the cache catalogue
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$CatalogueID = floor((TORRENT_COMMENTS_PER_PAGE * $CommPage - TORRENT_COMMENTS_PER_PAGE) / THREAD_CATALOGUE);
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// Cache catalogue from which the page is selected, allows block caches and future ability to specify posts per page
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$Catalogue = G::$Cache->get_value($Page.'_comments_'.$PageID.'_catalogue_'.$CatalogueID);
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if ($Catalogue === false) {
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$CatalogueLimit = $CatalogueID * THREAD_CATALOGUE . ', ' . THREAD_CATALOGUE;
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G::$DB->query("
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SELECT
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c.ID,
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c.AuthorID,
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c.AddedTime,
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c.Body,
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c.EditedUserID,
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c.EditedTime,
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u.Username
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FROM comments AS c
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LEFT JOIN users_main AS u ON u.ID = c.EditedUserID
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WHERE c.Page = '$Page' AND c.PageID = $PageID
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ORDER BY c.ID
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LIMIT $CatalogueLimit");
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$Catalogue = G::$DB->to_array(false, MYSQLI_ASSOC);
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G::$Cache->cache_value($Page.'_comments_'.$PageID.'_catalogue_'.$CatalogueID, $Catalogue, 0);
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}
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//This is a hybrid to reduce the catalogue down to the page elements: We use the page limit % catalogue
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$Thread = array_slice($Catalogue, ((TORRENT_COMMENTS_PER_PAGE * $CommPage - TORRENT_COMMENTS_PER_PAGE) % THREAD_CATALOGUE), TORRENT_COMMENTS_PER_PAGE, true);
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if ($HandleSubscriptions && count($Thread) > 0) {
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// quote notifications
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$LastPost = end($Thread);
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$LastPost = $LastPost['ID'];
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$FirstPost = reset($Thread);
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$FirstPost = $FirstPost['ID'];
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G::$DB->query("
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UPDATE users_notify_quoted
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SET UnRead = false
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WHERE UserID = " . G::$LoggedUser['ID'] . "
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AND Page = '$Page'
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AND PageID = $PageID
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AND PostID >= $FirstPost
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AND PostID <= $LastPost");
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if (G::$DB->affected_rows()) {
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G::$Cache->delete_value('notify_quoted_' . G::$LoggedUser['ID']);
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}
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// last read
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G::$DB->query("SELECT PostID FROM users_comments_last_read WHERE UserID = " . G::$LoggedUser['ID'] . " AND Page = '$Page' AND PageID = $PageID");
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list($LastRead) = G::$DB->next_record();
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if($LastRead < $LastPost) {
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G::$DB->query("INSERT INTO users_comments_last_read
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(UserID, Page, PageID, PostID) VALUES
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(" . G::$LoggedUser['ID'] . ", '$Page', $PageID, $LastPost)
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ON DUPLICATE KEY UPDATE PostID = $LastPost");
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G::$Cache->delete_value('subscriptions_user_new_' . G::$LoggedUser['ID']);
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}
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} else {
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$LastRead = false;
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}
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G::$DB->set_query_id($QueryID);
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return array($NumComments, $CommPage, $Thread, $LastRead);
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}
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/**
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* Merges all comments from $Page/$PageID into $Page/$TargetPageID. This also takes care of quote notifications, subscriptions and cache.
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* @param type $Page
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* @param type $PageID
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* @param type $TargetPageID
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*/
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public static function merge($Page, $PageID, $TargetPageID) {
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$QueryID = G::$DB->get_query_id();
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G::$DB->query("UPDATE comments SET PageID = $TargetPageID WHERE Page = '$Page' AND PageID = $PageID");
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// quote notifications
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G::$DB->query("UPDATE users_notify_quoted SET PageID = $TargetPageID WHERE Page = '$Page' AND PageID = $PageID");
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// comment subscriptions
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Subscriptions::move_subscriptions($Page, $PageID, $TargetPageID);
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// cache (we need to clear all comment catalogues)
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G::$DB->query("
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SELECT
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CEIL(COUNT(ID) / " . TORRENT_COMMENTS_PER_PAGE . ") AS Pages
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FROM comments
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WHERE Page = '$Page'
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AND PageID = $TargetPageID
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GROUP BY PageID");
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list($CommPages) = G::$DB->next_record();
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$LastCatalogue = floor((TORRENT_COMMENTS_PER_PAGE * $CommPages - TORRENT_COMMENTS_PER_PAGE) / THREAD_CATALOGUE);
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for ($i = 0; $i <= $LastCatalogue; ++$i) {
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G::$Cache->delete_value($Page . '_comments_' . $TargetPageID . '_catalogue_' . $i);
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}
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G::$Cache->delete_value($Page.'_comments_'.$TargetPageID);
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G::$DB->set_query_id($QueryID);
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}
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/**
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* Delete all comments on $Page/$PageID (deals with quote notifications and subscriptions as well)
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* @param string $Page
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* @param int $PageID
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* @return boolean
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*/
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public static function delete_page($Page, $PageID) {
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$QueryID = G::$DB->get_query_id();
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// get number of pages
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G::$DB->query("
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SELECT
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CEIL(COUNT(ID) / " . TORRENT_COMMENTS_PER_PAGE . ") AS Pages
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FROM comments
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WHERE Page = '$Page' AND PageID = $PageID
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GROUP BY PageID");
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if (!G::$DB->has_results()) {
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return false;
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}
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list($CommPages) = G::$DB->next_record();
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// Delete comments
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G::$DB->query("DELETE FROM comments WHERE Page = '$Page' AND PageID = $PageID");
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// Delete quote notifications
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Subscriptions::flush_quote_notifications($Page, $PageID);
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G::$DB->query("DELETE FROM users_notify_quoted WHERE Page = '$Page' AND PageID = $PageID");
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// Deal with subscriptions
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Subscriptions::move_subscriptions($Page, $PageID, null);
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// Clear cache
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$LastCatalogue = floor((TORRENT_COMMENTS_PER_PAGE * $CommPages - TORRENT_COMMENTS_PER_PAGE) / THREAD_CATALOGUE);
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for ($i = 0; $i <= $LastCatalogue; ++$i) {
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G::$Cache->delete_value($Page . '_comments_' . $PageID . '_catalogue_' . $i);
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|
}
|
||
|
G::$Cache->delete_value($Page.'_comments_'.$PageID);
|
||
|
|
||
|
G::$DB->set_query_id($QueryID);
|
||
|
|
||
|
return true;
|
||
|
}
|
||
|
}
|