Source code of Leftypol imageboard
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235 lines
6.7 KiB

<?php
require 'info.php';
/**
* Generate the board's HTML and move it and its JavaScript in place, whence
* it's served
*/
function overboards_build($action, $settings) {
global $config;
if ($action !== 'all' && $action !== 'post' && $action !== 'post-thread' &&
$action !== 'post-delete')
{
return;
}
if ($config['smart_build']) {
file_unlink($settings['uri'] . '/index.html');
} else {
require 'overboards.php';
$overboards = new overboards($overboards_config);
foreach ($overboards_config as &$overboard) {
if (!file_exists($overboard['uri'])) {
@mkdir($overboard['uri'], 0777) or error("Couldn't create {$overboard['uri']}. Check permissions.", true);
}
// Copy the generated board HTML to its place
file_write($overboard['uri'] . '/index.html', $overboards->build($overboard));
file_write($overboard['uri'] . '/overboard.js',
Element('themes/overboards/overboard.js', array()));
}
}
}
/**
* Encapsulation of the theme's internals
*/
class overboards {
private $settings;
function __construct($settings) {
$this->settings = $this->parseSettings($settings);
}
/**
* Parse and validate configuration parameters passed from the UI
*/
private function parseSettings(&$settings) {
foreach ($settings as &$overboard) {
if (!is_int($overboard['thread_limit']) || $overboard['thread_limit'] < 1)
{
error('thread_limit must be an integer above 1.', true);
}
if (!is_array($overboard['exclude']))
{
error('Exclude list must be array of strings.', true);
}
foreach ($overboard['exclude'] as &$board) {
if (!is_string($board)){
error('Exclude list must be array of strings.', true);
}
}
}
return $settings;
}
/**
* Obtain list of all threads from all non-excluded boards
*/
private function fetchThreads($overboard) {
$query = '';
$boards = listBoards(true);
foreach ($boards as $b) {
if (in_array($b, $overboard['exclude']))
continue;
// Threads are those posts that have no parent thread
$query .= "SELECT *, '$b' AS `board` FROM ``posts_$b`` " .
"WHERE `thread` IS NULL UNION ALL ";
}
$query = preg_replace('/UNION ALL $/', 'ORDER BY `bump` DESC', $query);
$result = query($query) or error(db_error());
return $result->fetchAll(PDO::FETCH_ASSOC);
}
/**
* Retrieve all replies to a given thread
*/
private function fetchReplies($board, $thread_id, $preview_count) {
$query = prepare("SELECT * FROM (SELECT * FROM ``posts_$board`` WHERE `thread` = :id ORDER BY `time` DESC LIMIT :limit) as
t ORDER BY t.time ASC");
$query->bindValue(':id', $thread_id, PDO::PARAM_INT);
$query->bindValue(':limit', $preview_count, PDO::PARAM_INT);
$query->execute() or error(db_error($query));
return $query->fetchAll(PDO::FETCH_ASSOC);
}
/**
* Retrieve count of images and posts in a thread
*/
private function fetchThreadCount($board, $thread_id, $preview_count) {
$query = prepare("SELECT SUM(t.num_files) as file_count, COUNT(t.id) as post_count FROM (SELECT * FROM ``posts_$board`` WHERE `thread` = :id ORDER BY `time` DESC LIMIT :offset , 18446744073709551615) as t;");
$query->bindValue(':id', $thread_id, PDO::PARAM_INT);
$query->bindValue(':offset', $preview_count, PDO::PARAM_INT);
$query->execute() or error(db_error($query));
return $query->fetch(PDO::FETCH_ASSOC);
}
/**
* Build the HTML of a single thread in the catalog
*/
private function buildOne($post, $mod = false) {
global $config;
openBoard($post['board']);
$thread = new Thread($post, $mod ? '?/' : $config['root'], $mod);
// Number of replies to a thread that are displayed beneath it
$preview_count = $post['sticky'] ? $config['threads_preview_sticky'] :
$config['threads_preview'];
$replies = $this->fetchReplies($post['board'], $post['id'], $preview_count);
$disp_replies = $replies;
foreach ($disp_replies as $reply) {
// Append the reply to the thread as it's being built
$thread->add(new Post($reply, $mod ? '?/' : $config['root'], $mod));
}
$threadCount = $this->fetchThreadCount($post['board'], $post['id'], $preview_count);
$thread->omitted = $threadCount['post_count'];
$thread->omitted_images = $threadCount['file_count'];
// Board name and link
$html = '<h2><a href="' . $config['root'] . $post['board'] . '/">/' .
$post['board'] . '/</a></h2>';
// The thread itself
$html .= $thread->build(true);
return $html;
}
/**
* Query the required information and generate the HTML
*/
public function build($overboard, $mod = false) {
if (!isset($this->settings)) {
error('Theme is not configured properly.');
}
global $config;
$html = '';
$overflow = array();
// Fetch threads from all boards and chomp the first 'n' posts, depending
// on the setting
$threads = $this->fetchThreads($overboard);
$total_count = count($threads);
// Top threads displayed on load
$top_threads = array_splice($threads, 0, $overboard['thread_limit']);
// Number of processed threads by board
$counts = array();
// Output threads up to the specified limit
foreach ($top_threads as $post) {
if (array_key_exists($post['board'], $counts)) {
++$counts[$post['board']];
} else {
$counts[$post['board']] = 1;
}
$html .= $this->buildOne($post, $mod);
}
foreach ($threads as $post) {
if (array_key_exists($post['board'], $counts)) {
++$counts[$post['board']];
} else {
$counts[$post['board']] = 1;
}
$page = 'index';
$board_page = floor($counts[$post['board']] / $config['threads_per_page']);
if ($board_page > 0) {
$page = $board_page + 1;
}
$overflow[] = array(
'id' => $post['id'],
'board' => $post['board'],
'page' => $page . '.html'
);
}
$html .= '<script>var ukko_overflow = ' . json_encode($overflow) . '</script>';
$html .= '<script type="text/javascript" src="/'.$overboard['uri'].'/overboard.js"></script>';
return Element('index.html', array(
'config' => $config,
'board' => array(
'dir' => $overboard['uri'] . "/",
'url' => $overboard['uri'],
'title' => $overboard['title'],
'subtitle' => str_replace('%s', $overboard['thread_limit'],
strval(min($overboard['subtitle'], $total_count))),
),
'no_post_form' => true,
'body' => $html,
'mod' => $mod,
'boardlist' => createBoardlist($mod),
));
}
};
if (!function_exists('array_column')) {
/**
* Pick out values from subarrays by given key
*/
function array_column($array, $key) {
$result = [];
foreach ($array as $val) {
$result[] = $val[$key];
}
return $result;
}
}