<?php
/**
* Name: [Beta] Forum
* Author: Sein Kraft <mail@seinkraft.info>
* Alpha <alpha@furries.com.ar>
* License: GPLv2
* Description: Rough forum extension
* Documentation:
*/
/*
Todo:
*Quote buttons on posts
*Move delete and quote buttons away from each other
*Bring us on par with comment extension(post linking, image linking, thumb links, URL autolink)
*Smiley filter, word filter, etc should work with our extension
*/
class Forum extends Extension {
public function onInitExt(InitExtEvent $event) {
global $config, $database;
// shortcut to latest
if ($config->get_int("forum_version") < 1) {
$database->create_table("forum_threads", "
id SCORE_AIPK,
sticky SCORE_BOOL NOT NULL DEFAULT SCORE_BOOL_N,
title VARCHAR(255) NOT NULL,
user_id INTEGER NOT NULL,
date SCORE_DATETIME NOT NULL,
uptodate SCORE_DATETIME NOT NULL,
FOREIGN KEY (user_id) REFERENCES users(id) ON UPDATE CASCADE ON DELETE RESTRICT
");
$database->execute("CREATE INDEX forum_threads_date_idx ON forum_threads(date)", array());
$database->create_table("forum_posts", "
id SCORE_AIPK,
thread_id INTEGER NOT NULL,
user_id INTEGER NOT NULL,
date SCORE_DATETIME NOT NULL,
message TEXT,
FOREIGN KEY (user_id) REFERENCES users(id) ON UPDATE CASCADE ON DELETE RESTRICT,
FOREIGN KEY (thread_id) REFERENCES forum_threads (id) ON UPDATE CASCADE ON DELETE CASCADE
");
$database->execute("CREATE INDEX forum_posts_date_idx ON forum_posts(date)", array());
$config->set_int("forum_version", 2);
$config->set_int("forumTitleSubString", 25);
$config->set_int("forumThreadsPerPage", 15);
$config->set_int("forumPostsPerPage", 15);
$config->set_int("forumMaxCharsPerPost", 512);
log_info("forum", "extension installed");
}
if ($config->get_int("forum_version") < 2) {
$database->execute("ALTER TABLE forum_threads ADD FOREIGN KEY (user_id) REFERENCES users(id) ON UPDATE CASCADE ON DELETE RESTRICT");
$database->execute("ALTER TABLE forum_posts ADD FOREIGN KEY (user_id) REFERENCES users(id) ON UPDATE CASCADE ON DELETE RESTRICT");
$config->set_int("forum_version", 2);
}
}
public function onSetupBuilding(SetupBuildingEvent $event) {
$sb = new SetupBlock("Forum");
$sb->add_int_option("forumTitleSubString", "Title max long: ");
$sb->add_int_option("forumThreadsPerPage", "<br>Threads per page: ");
$sb->add_int_option("forumPostsPerPage", "<br>Posts per page: ");
$sb->add_int_option("forumMaxCharsPerPost", "<br>Max chars per post: ");
$event->panel->add_block($sb);
}
public function onUserPageBuilding(UserPageBuildingEvent $event) {
global $page, $user, $database;
$threads_count = $database->get_one("SELECT COUNT(*) FROM forum_threads WHERE user_id=?", array($event->display_user->id));
$posts_count = $database->get_one("SELECT COUNT(*) FROM forum_posts WHERE user_id=?", array($event->display_user->id));
$days_old = ((time() - strtotime($event->display_user->join_date)) / 86400) + 1;
$threads_rate = sprintf("%.1f", ($threads_count / $days_old));
$posts_rate = sprintf("%.1f", ($posts_count / $days_old));
$event->add_stats("Forum threads: $threads_count, $threads_rate per day");
$event->add_stats("Forum posts: $posts_count, $posts_rate per day");
}
public function onPageRequest(PageRequestEvent $event) {
global $page, $user;
if($event->page_matches("forum")) {
switch($event->get_arg(0)) {
case "index":
{
$this->show_last_threads($page, $event, $user->is_admin());
if(!$user->is_anonymous()) $this->theme->display_new_thread_composer($page);
break;
}
case "view":
{
$threadID = int_escape($event->get_arg(1));
$pageNumber = int_escape($event->get_arg(2));
list($errors) = $this->sanity_check_viewed_thread($threadID);
if($errors!=null)
{
$this->theme->display_error(500, "Error", $errors);
break;
}
$this->show_posts($event, $user->is_admin());
if($user->is_admin()) $this->theme->add_actions_block($page, $threadID);
if(!$user->is_anonymous()) $this->theme->display_new_post_composer($page, $threadID);
break;
}
case "new":
{
global $page;
$this->theme->display_new_thread_composer($page);
break;
}
case "create":
{
$redirectTo = "forum/index";
if (!$user->is_anonymous())
{
list($errors) = $this->sanity_check_new_thread();
if($errors!=null)
{
$this->theme->display_error(500, "Error", $errors);
break;
}
$newThreadID = $this->save_new_thread($user);
$this->save_new_post($newThreadID, $user);
$redirectTo = "forum/view/".$newThreadID."/1";
}
$page->set_mode("redirect");
$page->set_redirect(make_link($redirectTo));
break;
}
case "delete":
$threadID = int_escape($event->get_arg(1));
$postID = int_escape($event->get_arg(2));
if ($user->is_admin()) {$this->delete_post($postID);}
$page->set_mode("redirect");
$page->set_redirect(make_link("forum/view/".$threadID));
break;
case "nuke":
$threadID = int_escape($event->get_arg(1));
if ($user->is_admin())
$this->delete_thread($threadID);
$page->set_mode("redirect");
$page->set_redirect(make_link("forum/index"));
break;
case "answer":
$threadID = int_escape($_POST["threadID"]);
$total_pages = $this->get_total_pages_for_thread($threadID);
if (!$user->is_anonymous())
{
list($errors) = $this->sanity_check_new_post();
if ($errors!=null)
{
$this->theme->display_error(500, "Error", $errors);
break;
}
$this->save_new_post($threadID, $user);
}
$page->set_mode("redirect");
$page->set_redirect(make_link("forum/view/".$threadID."/".$total_pages));
break;
default:
{
$page->set_mode("redirect");
$page->set_redirect(make_link("forum/index"));
//$this->theme->display_error(400, "Invalid action", "You should check forum/index.");
break;
}
}
}
}
private function get_total_pages_for_thread(/*int*/ $threadID)
{
global $database, $config;
$result = $database->get_row("SELECT COUNT(1) AS count FROM forum_posts WHERE thread_id = ?", array($threadID));
return ceil($result["count"] / $config->get_int("forumPostsPerPage"));
}
private function sanity_check_new_thread()
{
$errors = null;
if (!array_key_exists("title", $_POST))
{
$errors .= "<div id='error'>No title supplied.</div>";
}
else if (strlen($_POST["title"]) == 0)
{
$errors .= "<div id='error'>You cannot have an empty title.</div>";
}
else if (strlen(html_escape($_POST["title"])) > 255)
{
$errors .= "<div id='error'>Your title is too long.</div>";
}
if (!array_key_exists("message", $_POST))
{
$errors .= "<div id='error'>No message supplied.</div>";
}
else if (strlen($_POST["message"]) == 0)
{
$errors .= "<div id='error'>You cannot have an empty message.</div>";
}
return array($errors);
}
private function sanity_check_new_post()
{
$errors = null;
if (!array_key_exists("threadID", $_POST))
{
$errors = "<div id='error'>No thread ID supplied.</div>";
}
else if (strlen($_POST["threadID"]) == 0)
{
$errors = "<div id='error'>No thread ID supplied.</div>";
}
else if (is_numeric($_POST["threadID"]))
if (!array_key_exists("message", $_POST))
{
$errors .= "<div id='error'>No message supplied.</div>";
}
else if (strlen($_POST["message"]) == 0)
{
$errors .= "<div id='error'>You cannot have an empty message.</div>";
}
return array($errors);
}
private function sanity_check_viewed_thread($threadID)
{
global $database;
$errors = null;
if (!$this->threadExists($threadID))
{
$errors = "<div id='error'>Inexistent thread.</div>";
}
return array($errors);
}
private function get_thread_title($threadID)
{
global $database;
$result = $database->get_row("SELECT t.title FROM forum_threads AS t WHERE t.id = ? ", array($threadID));
return $result["title"];
}
private function show_last_threads(Page $page, $event, $showAdminOptions = false)
{
global $config, $database;
$pageNumber = $event->get_arg(1);
$threadsPerPage = $config->get_int('forumThreadsPerPage', 15);
$totalPages = ceil($database->get_one("SELECT COUNT(*) FROM forum_threads") / $threadsPerPage);
if(is_null($pageNumber) || !is_numeric($pageNumber))
$pageNumber = 0;
else if ($pageNumber <= 0)
$pageNumber = 0;
else if ($pageNumber >= $totalPages)
$pageNumber = $totalPages - 1;
else
$pageNumber--;
$threads = $database->get_all(
"SELECT f.id, f.sticky, f.title, f.date, f.uptodate, u.name AS user_name, u.email AS user_email, u.class AS user_class, sum(1) - 1 AS response_count ".
"FROM forum_threads AS f ".
"INNER JOIN users AS u ".
"ON f.user_id = u.id ".
"INNER JOIN forum_posts AS p ".
"ON p.thread_id = f.id ".
"GROUP BY f.id, f.sticky, f.title, f.date, u.name, u.email, u.class ".
"ORDER BY f.sticky ASC, f.uptodate DESC LIMIT :limit OFFSET :offset"
, array("limit"=>$threadsPerPage, "offset"=>$pageNumber * $threadsPerPage)
);
$this->theme->display_thread_list($page, $threads, $showAdminOptions, $pageNumber + 1, $totalPages);
}
private function show_posts($event, $showAdminOptions = false)
{
global $config, $database, $user;
$threadID = $event->get_arg(1);
$pageNumber = $event->get_arg(2);
$postsPerPage = $config->get_int('forumPostsPerPage', 15);
$totalPages = ceil($database->get_one("SELECT COUNT(*) FROM forum_posts WHERE thread_id = ?", array($threadID)) / $postsPerPage);
$threadTitle = $this->get_thread_title($threadID);
if(is_null($pageNumber) || !is_numeric($pageNumber))
$pageNumber = 0;
else if ($pageNumber <= 0)
$pageNumber = 0;
else if ($pageNumber >= $totalPages)
$pageNumber = $totalPages - 1;
else
$pageNumber--;
$posts = $database->get_all(
"SELECT p.id, p.date, p.message, u.name as user_name, u.email AS user_email, u.class AS user_class ".
"FROM forum_posts AS p ".
"INNER JOIN users AS u ".
"ON p.user_id = u.id ".
"WHERE thread_id = :thread_id ".
"ORDER BY p.date ASC ".
"LIMIT :limit OFFSET :offset"
, array("thread_id"=>$threadID, "offset"=>$pageNumber * $postsPerPage, "limit"=>$postsPerPage)
);
$this->theme->display_thread($posts, $showAdminOptions, $threadTitle, $threadID, $pageNumber + 1, $totalPages);
}
private function save_new_thread($user)
{
$title = html_escape($_POST["title"]);
$sticky = !empty($_POST["sticky"]) ? html_escape($_POST["sticky"]) : "N";
if($sticky == ""){
$sticky = "N";
}
global $database;
$database->execute("
INSERT INTO forum_threads
(title, sticky, user_id, date, uptodate)
VALUES
(?, ?, ?, now(), now())",
array($title, $sticky, $user->id));
$threadID = $database->get_last_insert_id("forum_threads_id_seq");
log_info("forum", "Thread {$threadID} created by {$user->name}");
return $threadID;
}
private function save_new_post($threadID, $user)
{
global $config;
$userID = $user->id;
$message = html_escape($_POST["message"]);
$max_characters = $config->get_int('forumMaxCharsPerPost');
$message = substr($message, 0, $max_characters);
global $database;
$database->execute("INSERT INTO forum_posts
(thread_id, user_id, date, message)
VALUES
(?, ?, now(), ?)"
, array($threadID, $userID, $message));
$postID = $database->get_last_insert_id("forum_posts_id_seq");
log_info("forum", "Post {$postID} created by {$user->name}");
$database->execute("UPDATE forum_threads SET uptodate=now() WHERE id=?", array ($threadID));
}
private function retrieve_posts($threadID, $pageNumber)
{
global $database, $config;
$postsPerPage = $config->get_int('forumPostsPerPage', 15);
return $database->get_all(
"SELECT p.id, p.date, p.message, u.name as user_name, u.email AS user_email, u.class AS user_class ".
"FROM forum_posts AS p ".
"INNER JOIN users AS u ".
"ON p.user_id = u.id ".
"WHERE thread_id = :thread_id ".
"ORDER BY p.date ASC ".
"LIMIT :limit OFFSET :offset "
, array("thread_id"=>$threadID, "offset"=>($pageNumber - 1) * $postsPerPage, "limit"=>$postsPerPage));
}
private function delete_thread($threadID)
{
global $database;
$database->execute("DELETE FROM forum_threads WHERE id = ?", array($threadID));
$database->execute("DELETE FROM forum_posts WHERE thread_id = ?", array($threadID));
}
private function delete_post($postID)
{
global $database;
$database->execute("DELETE FROM forum_posts WHERE id = ?", array($postID));
}
private function threadExists($threadID){
global $database;
$result=$database->get_one("SELECT EXISTS (SELECT * FROM forum_threads WHERE id= ?)", array($threadID));
if ($result==1){
return true;
}else{
return false;
}
}
}