<?php
namespace Zotlabs\Lib;
use \Zotlabs\Lib as Zlib;
class NativeWikiPage {
static public function page_list($channel_id,$observer_hash, $resource_id) {
// TODO: Create item table records for pages so that metadata like title can be applied
$w = Zlib\NativeWiki::get_wiki($channel_id,$observer_hash,$resource_id);
$pages[] = [
'resource_id' => '',
'title' => 'Home',
'url' => 'Home',
'link_id' => 'id_wiki_home_0'
];
$sql_extra = item_permissions_sql($channel_id,$observer_hash);
$r = q("select * from item where resource_type = 'nwikipage' and resource_id = '%s' and uid = %d $sql_extra group by mid",
dbesc($resource_id),
intval($channel_id)
);
if($r) {
$items = fetch_post_tags($r,true);
foreach($items as $page_item) {
$title = get_iconfig($page_item['id'],'nwikipage','pagetitle',t('(No Title)'));
if(urldecode($title) !== 'Home') {
$pages[] = [
'resource_id' => $resource_id,
'title' => urldecode($title),
'url' => $title,
'link_id' => 'id_' . substr($resource_id, 0, 10) . '_' . $page_item['id']
];
}
}
}
return array('pages' => $pages, 'wiki' => $w);
}
static public function create_page($channel_id, $observer_hash, $name, $resource_id) {
$w = Zlib\NativeWiki::get_wiki($channel_id, $observer_hash, $resource_id);
// create an empty activity
$arr = [];
$arr['uid'] = $channel_id;
$arr['author_xchan'] = $observer_hash;
$arr['resource_type'] = 'nwikipage';
$arr['resource_id'] = $resource_id;
set_iconfig($arr,'nwikipage','pagetitle',urlencode(($name) ? $name : t('(No Title)')),true);
post_activity_item($arr, false, false);
$page = [
'rawName' => $name,
'htmlName' => escape_tags($name),
'urlName' => urlencode(escape_tags($name)),
'fileName' => urlencode(escape_tags($name)) . Zlib\NativeWikiPage::get_file_ext($w)
];
return array('page' => $page, 'wiki' => $w, 'message' => '', 'success' => true);
}
static public function rename_page($arr) {
$pageUrlName = ((array_key_exists('pageUrlName',$arr)) ? $arr['pageUrlName'] : '');
$pageNewName = ((array_key_exists('pageNewName',$arr)) ? $arr['pageNewName'] : '');
$resource_id = ((array_key_exists('resource_id',$arr)) ? $arr['resource_id'] : '');
$observer_hash = ((array_key_exists('observer_hash',$arr)) ? $arr['observer_hash'] : '');
$channel_id = ((array_key_exists('channel_id',$arr)) ? $arr['channel_id'] : 0);
$w = Zlib\NativeWiki::get_wiki($channel_id, $observer_hash, $resource_id);
if(! $w['path']) {
return array('message' => t('Wiki not found.'), 'success' => false);
}
$page_path_old = $w['path'] . '/' . $pageUrlName . \Zlib\NativeWikiPage::get_file_ext($w);
if(! is_readable($page_path_old) === true) {
return array('message' => 'Cannot read wiki page: ' . $page_path_old, 'success' => false);
}
$page = [
'rawName' => $pageNewName,
'htmlName' => escape_tags($pageNewName),
'urlName' => urlencode(escape_tags($pageNewName)),
'fileName' => urlencode(escape_tags($pageNewName)) . \Zlib\NativeWikiPage::get_file_ext($w)
];
$page_path_new = $w['path'] . '/' . $page['fileName'] ;
if(is_file($page_path_new)) {
return array('message' => 'Page already exists.', 'success' => false);
}
// Rename the page file in the wiki repo
if(! rename($page_path_old, $page_path_new)) {
return array('message' => 'Error renaming page file.', 'success' => false);
}
else {
return array('page' => $page, 'message' => '', 'success' => true);
}
}
static public function get_page_content($arr) {
$pageUrlName = ((array_key_exists('pageUrlName',$arr)) ? $arr['pageUrlName'] : '');
$resource_id = ((array_key_exists('resource_id',$arr)) ? $arr['resource_id'] : '');
$observer_hash = ((array_key_exists('observer_hash',$arr)) ? $arr['observer_hash'] : '');
$channel_id = ((array_key_exists('channel_id',$arr)) ? intval($arr['channel_id']) : 0);
$revision = ((array_key_exists('revision',$arr)) ? intval($arr['revision']) : (-1));
$w = Zlib\NativeWiki::get_wiki($channel_id, $observer_hash, $resource_id);
if (! $w['wiki']) {
return array('content' => null, 'message' => 'Error reading wiki', 'success' => false);
}
$item = self::load_page($arr);
if($item) {
$content = $item['body'];
return [
'content' => json_encode($content),
'mimeType' => $w['mimeType'],
'message' => '',
'success' => true
];
}
return array('content' => null, 'message' => t('Error reading page content'), 'success' => false);
}
static public function page_history($arr) {
$pageUrlName = ((array_key_exists('pageUrlName',$arr)) ? $arr['pageUrlName'] : '');
$resource_id = ((array_key_exists('resource_id',$arr)) ? $arr['resource_id'] : '');
$observer_hash = ((array_key_exists('observer_hash',$arr)) ? $arr['observer_hash'] : '');
$channel_id = ((array_key_exists('channel_id',$arr)) ? $arr['channel_id'] : 0);
$w = Zlib\NativeWiki::get_wiki($channel_id, $observer_hash, $resource_id);
if (!$w['wiki']) {
return array('history' => null, 'message' => 'Error reading wiki', 'success' => false);
}
$items = self::load_page_history($arr);
$history = [];
if($items) {
$processed = 0;
foreach($items as $item) {
if($processed > 1000)
break;
$processed ++;
$history[] = [
'revision' => $item['revision'],
'date' => datetime_convert('UTC',date_default_timezone_get(),$item['created']),
'name' => $item['author']['xchan_name'],
'title' => get_iconfig($item,'nwikipage','commit_msg')
];
}
return [ 'success' => true, 'history' => $history ];
}
return [ 'success' => false ];
}
static public function load_page($arr) {
logger('arr: ' . print_r($arr,true));
$pageUrlName = ((array_key_exists('pageUrlName',$arr)) ? $arr['pageUrlName'] : '');
$resource_id = ((array_key_exists('resource_id',$arr)) ? $arr['resource_id'] : '');
$observer_hash = ((array_key_exists('observer_hash',$arr)) ? $arr['observer_hash'] : '');
$channel_id = ((array_key_exists('channel_id',$arr)) ? $arr['channel_id'] : 0);
$revision = ((array_key_exists('revision',$arr)) ? $arr['revision'] : (-1));
$w = Zlib\NativeWiki::get_wiki($channel_id, $observer_hash, $resource_id);
if (! $w['wiki']) {
return array('content' => null, 'message' => 'Error reading wiki', 'success' => false);
}
$ids = '';
dbg(0);
$ic = q("select * from iconfig left join item on iconfig.iid = item.id where uid = %d and cat = 'nwikipage' and k = 'pagetitle' and v = '%s'",
intval($channel_id),
dbesc($pageUrlName)
);
if($ic) {
foreach($ic as $c) {
if($ids)
$ids .= ',';
$ids .= intval($c['iid']);
}
}
$sql_extra = item_permissions_sql($channel_id,$observer_hash);
if($revision == (-1))
$sql_extra .= " order by revision desc ";
elseif($revision)
$sql_extra .= " and revision = " . intval($revision) . " ";
$r = null;
if($ids) {
$r = q("select * from item where resource_type = 'nwikipage' and resource_id = '%s' and uid = %d and id in ( $ids ) $sql_extra limit 1",
dbesc($resource_id),
intval($channel_id)
);
dbg(0);
if($r) {
$items = fetch_post_tags($r,true);
return $items[0];
}
}
dbg(0);
return null;
}
static public function load_page_history($arr) {
$pageUrlName = ((array_key_exists('pageUrlName',$arr)) ? $arr['pageUrlName'] : '');
$resource_id = ((array_key_exists('resource_id',$arr)) ? $arr['resource_id'] : '');
$observer_hash = ((array_key_exists('observer_hash',$arr)) ? $arr['observer_hash'] : '');
$channel_id = ((array_key_exists('channel_id',$arr)) ? $arr['channel_id'] : 0);
$revision = ((array_key_exists('revision',$arr)) ? $arr['revision'] : (-1));
$w = Zlib\NativeWiki::get_wiki($channel_id, $observer_hash, $resource_id);
if (! $w['wiki']) {
return array('content' => null, 'message' => 'Error reading wiki', 'success' => false);
}
$ids = '';
$ic = q("select * from iconfig left join item on iconfig.iid = item.id where uid = %d and cat = 'nwikipage' and k = 'pagetitle' and v = '%s'",
intval($channel_id),
dbesc($pageUrlName)
);
if($ic) {
foreach($ic as $c) {
if($ids)
$ids .= ',';
$ids .= intval($c['iid']);
}
}
$sql_extra = item_permissions_sql($channel_id,$observer_hash);
$sql_extra .= " order by revision desc ";
$r = null;
if($ids) {
$r = q("select * from item where resource_type = 'nwikipage' and resource_id = '%s' and uid = %d and id in ( $ids ) $sql_extra",
dbesc($resource_id),
intval($channel_id)
);
if($r) {
xchan_query($r);
$items = fetch_post_tags($r,true);
return $items;
}
}
return null;
}
static public function prepare_content($s) {
$text = preg_replace_callback('{
(?:\n\n|\A\n?)
( # $1 = the code block -- one or more lines, starting with a space/tab
(?>
[ ]{'.'4'.'} # Lines must start with a tab or a tab-width of spaces
.*\n+
)+
)
((?=^[ ]{0,'.'4'.'}\S)|\Z) # Lookahead for non-space at line-start, or end of doc
}xm',
'self::nwiki_prepare_content_callback', $s);
return $text;
}
static public function nwiki_prepare_content_callback($matches) {
$codeblock = $matches[1];
$codeblock = htmlspecialchars($codeblock, ENT_NOQUOTES, UTF8, false);
return "\n\n" . $codeblock ;
}
static public function save_page($arr) {
$pageUrlName = ((array_key_exists('pageUrlName',$arr)) ? $arr['pageUrlName'] : '');
$content = ((array_key_exists('content',$arr)) ? purify_html(Zlib\NativeWikiPage::prepare_content($arr['content'])) : '');
$resource_id = ((array_key_exists('resource_id',$arr)) ? $arr['resource_id'] : '');
$observer_hash = ((array_key_exists('observer_hash',$arr)) ? $arr['observer_hash'] : '');
$channel_id = ((array_key_exists('channel_id',$arr)) ? $arr['channel_id'] : 0);
$revision = ((array_key_exists('revision',$arr)) ? $arr['revision'] : 0);
$w = Zlib\NativeWiki::get_wiki($channel_id, $observer_hash, $resource_id);
if (!$w['wiki']) {
return array('message' => t('Error reading wiki'), 'success' => false);
}
$item = self::load_page($arr);
if(! $item) {
return array('message' => t('Page not found'), 'success' => false);
}
unset($item['id']);
unset($item['author']);
$item['parent'] = 0;
$item['body'] = $content;
$item['author_xchan'] = $observer_hash;
$item['revision'] = (($arr['revision']) ? intval($arr['revision']) + 1 : intval($item['revision']) + 1);
if($item['iconfig'] && is_array($item['iconfig']) && count($item['iconfig'])) {
for($x = 0; $x < count($item['iconfig']); $x ++) {
unset($item['iconfig'][$x]['id']);
unset($item['iconfig'][$x]['iid']);
}
}
$ret = item_store($item, false, false);
if($ret['item_id'])
return array('message' => '', 'filename' => $filename, 'success' => true);
else
return array('message' => t('Page update failed.'), 'success' => false);
}
static public function delete_page($arr) {
$pageUrlName = ((array_key_exists('pageUrlName',$arr)) ? $arr['pageUrlName'] : '');
$resource_id = ((array_key_exists('resource_id',$arr)) ? $arr['resource_id'] : '');
$observer_hash = ((array_key_exists('observer_hash',$arr)) ? $arr['observer_hash'] : '');
$channel_id = ((array_key_exists('channel_id',$arr)) ? $arr['channel_id'] : 0);
$w = Zlib\NativeWiki::get_wiki($channel_id, $observer_hash, $resource_id);
if (!$w['path']) {
return array('message' => t('Error reading wiki'), 'success' => false);
}
$page_path = $w['path'] . '/' . $pageUrlName . wiki_get_file_ext($w);
if (is_writable($page_path) === true) {
if(!unlink($page_path)) {
return array('message' => t('Error deleting page file'), 'success' => false);
}
return array('message' => '', 'success' => true);
}
else {
return array('message' => t('Page file not writable'), 'success' => false);
}
}
static public function revert_page($arr) {
$pageUrlName = ((array_key_exists('pageUrlName',$arr)) ? $arr['pageUrlName'] : '');
$resource_id = ((array_key_exists('resource_id',$arr)) ? $arr['resource_id'] : '');
$commitHash = ((array_key_exists('commitHash',$arr)) ? $arr['commitHash'] : null);
$observer_hash = ((array_key_exists('observer_hash',$arr)) ? $arr['observer_hash'] : '');
$channel_id = ((array_key_exists('channel_id',$arr)) ? $arr['channel_id'] : 0);
if (! $commitHash) {
return array('content' => $content, 'message' => 'No commit was provided', 'success' => false);
}
$w = Zlib\NativeWiki::get_wiki($channel_id, $observer_hash, $resource_id);
if (!$w['wiki']) {
return array('content' => $content, 'message' => 'Error reading wiki', 'success' => false);
}
$x = $arr;
if(intval($commitHash) > 0) {
unset($x['commitHash']);
$x['revision'] = intval($commitHash) - 1;
$loaded = self::load_page($x);
if($loaded) {
$content = $loaded['body'];
return [ 'content' => $content, 'success' => true ];
}
return [ 'content' => $content, 'success' => false ];
}
}
static public function compare_page($arr) {
$pageUrlName = ((array_key_exists('pageUrlName',$arr)) ? $arr['pageUrlName'] : '');
$resource_id = ((array_key_exists('resource_id',$arr)) ? $arr['resource_id'] : '');
$currentCommit = ((array_key_exists('currentCommit',$arr)) ? $arr['currentCommit'] : 'HEAD');
$compareCommit = ((array_key_exists('compareCommit',$arr)) ? $arr['compareCommit'] : null);
$observer_hash = ((array_key_exists('observer_hash',$arr)) ? $arr['observer_hash'] : '');
$channel_id = ((array_key_exists('channel_id',$arr)) ? $arr['channel_id'] : 0);
if (! $compareCommit) {
return array('message' => t('No compare commit was provided'), 'success' => false);
}
$w = Zlib\NativeWiki::get_wiki($channel_id, $observer_hash, $resource_id);
if (!$w['path']) {
return array('message' => t('Error reading wiki'), 'success' => false);
}
$page_path = $w['path'] . '/' . $pageUrlName . \Zlib\NativeWikiPage::get_file_ext($w);
if (is_readable($page_path) === true) {
$reponame = ((array_key_exists('title', $w['wiki'])) ? urlencode($w['wiki']['title']) : 'repo');
if($reponame === '') {
$reponame = 'repo';
}
$git = new GitRepo('', null, false, $w['wiki']['title'], $w['path']);
$compareContent = $currentContent = '';
try {
foreach ($git->git->tree($currentCommit) as $object) {
if ($object['type'] == 'blob' && $object['file'] === $pageUrlName . wiki_get_file_ext($w)) {
$currentContent = $git->git->cat->blob($object['hash']);
}
}
foreach ($git->git->tree($compareCommit) as $object) {
if ($object['type'] == 'blob' && $object['file'] === $pageUrlName . wiki_get_file_ext($w)) {
$compareContent = $git->git->cat->blob($object['hash']);
}
}
require_once('library/class.Diff.php');
$diff = Diff::toTable(Diff::compare($currentContent, $compareContent));
}
catch (\PHPGit\Exception\GitException $e) {
return array('message' => t('GitRepo error thrown'), 'success' => false);
}
return array('diff' => $diff, 'message' => '', 'success' => true);
}
else {
return array('message' => t('Page file not writable'), 'success' => false);
}
}
static public function commit($arr) {
logger('committing');
$commit_msg = ((array_key_exists('commit_msg', $arr)) ? $arr['commit_msg'] : t('Page updated'));
$observer_hash = ((array_key_exists('observer_hash',$arr)) ? $arr['observer_hash'] : '');
$channel_id = ((array_key_exists('channel_id',$arr)) ? $arr['channel_id'] : 0);
$pageUrlName = ((array_key_exists('pageUrlName',$arr)) ? $arr['pageUrlName'] : t('Untitled'));
if(array_key_exists('resource_id', $arr)) {
$resource_id = $arr['resource_id'];
}
else {
return array('message' => t('Wiki resource_id required for git commit'), 'success' => false);
}
$w = Zlib\NativeWiki::get_wiki($channel_id, $observer_hash, $resource_id);
if (! $w['wiki']) {
return array('message' => t('Error reading wiki'), 'success' => false);
}
$page = self::load_page($arr);
logger('commit: page: ' . print_r($page,true));
if($page) {
set_iconfig($page['id'],'nwikipage','commit_msg',escape_tags($commit_msg),true);
return [ 'success' => true, 'page' => $page ];
}
return [ 'success' => false, 'message' => t('Page not found.') ];
}
static public function convert_links($s, $wikiURL) {
if (strpos($s,'[[') !== false) {
preg_match_all("/\[\[(.*?)\]\]/", $s, $match);
$pages = $pageURLs = array();
foreach ($match[1] as $m) {
// TODO: Why do we need to double urlencode for this to work?
$pageURLs[] = urlencode(urlencode(escape_tags($m)));
$pages[] = $m;
}
$idx = 0;
while(strpos($s,'[[') !== false) {
$replace = '<a href="'.$wikiURL.'/'.$pageURLs[$idx].'">'.$pages[$idx].'</a>';
$s = preg_replace("/\[\[(.*?)\]\]/", $replace, $s, 1);
$idx++;
}
}
return $s;
}
/**
* Replace the instances of the string [toc] with a list element that will be populated by
* a table of contents by the JavaScript library
* @param string $s
* @return string
*/
static public function generate_toc($s) {
if (strpos($s,'[toc]') !== false) {
//$toc_md = wiki_toc($s); // Generate Markdown-formatted list prior to HTML render
$toc_md = '<ul id="wiki-toc"></ul>'; // use the available jQuery plugin http://ndabas.github.io/toc/
$s = preg_replace("/\[toc\]/", $toc_md, $s, -1);
}
return $s;
}
/**
* Converts a select set of bbcode tags. Much of the code is copied from include/bbcode.php
* @param string $s
* @return string
*/
static public function bbcode($s) {
$s = str_replace(array('[baseurl]', '[sitename]'), array(z_root(), get_config('system', 'sitename')), $s);
$observer = App::get_observer();
if ($observer) {
$s1 = '<span class="bb_observer" title="' . t('Different viewers will see this text differently') . '">';
$s2 = '</span>';
$obsBaseURL = $observer['xchan_connurl'];
$obsBaseURL = preg_replace("/\/poco\/.*$/", '', $obsBaseURL);
$s = str_replace('[observer.baseurl]', $obsBaseURL, $s);
$s = str_replace('[observer.url]', $observer['xchan_url'], $s);
$s = str_replace('[observer.name]', $s1 . $observer['xchan_name'] . $s2, $s);
$s = str_replace('[observer.address]', $s1 . $observer['xchan_addr'] . $s2, $s);
$s = str_replace('[observer.webname]', substr($observer['xchan_addr'], 0, strpos($observer['xchan_addr'], '@')), $s);
$s = str_replace('[observer.photo]', '', $s);
} else {
$s = str_replace('[observer.baseurl]', '', $s);
$s = str_replace('[observer.url]', '', $s);
$s = str_replace('[observer.name]', '', $s);
$s = str_replace('[observer.address]', '', $s);
$s = str_replace('[observer.webname]', '', $s);
$s = str_replace('[observer.photo]', '', $s);
}
return $s;
}
static public function get_file_ext($arr) {
if($arr['mimeType'] == 'text/bbcode')
return '.bb';
else
return '.md';
}
// This function is derived from
// http://stackoverflow.com/questions/32068537/generate-table-of-contents-from-markdown-in-php
static public function toc($content) {
// ensure using only "\n" as line-break
$source = str_replace(["\r\n", "\r"], "\n", $content);
// look for markdown TOC items
preg_match_all(
'/^(?:=|-|#).*$/m',
$source,
$matches,
PREG_PATTERN_ORDER | PREG_OFFSET_CAPTURE
);
// preprocess: iterate matched lines to create an array of items
// where each item is an array(level, text)
$file_size = strlen($source);
foreach ($matches[0] as $item) {
$found_mark = substr($item[0], 0, 1);
if ($found_mark == '#') {
// text is the found item
$item_text = $item[0];
$item_level = strrpos($item_text, '#') + 1;
$item_text = substr($item_text, $item_level);
} else {
// text is the previous line (empty if <hr>)
$item_offset = $item[1];
$prev_line_offset = strrpos($source, "\n", -($file_size - $item_offset + 2));
$item_text =
substr($source, $prev_line_offset, $item_offset - $prev_line_offset - 1);
$item_text = trim($item_text);
$item_level = $found_mark == '=' ? 1 : 2;
}
if (!trim($item_text) OR strpos($item_text, '|') !== FALSE) {
// item is an horizontal separator or a table header, don't mind
continue;
}
$raw_toc[] = ['level' => $item_level, 'text' => trim($item_text)];
}
$o = '';
foreach($raw_toc as $t) {
$level = intval($t['level']);
$text = $t['text'];
switch ($level) {
case 1:
$li = '* ';
break;
case 2:
$li = ' * ';
break;
case 3:
$li = ' * ';
break;
case 4:
$li = ' * ';
break;
default:
$li = '* ';
break;
}
$o .= $li . $text . "\n";
}
return $o;
}
}
