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<?php
/**
* @file include/wiki.php
* @brief Wiki related functions.
*/
use \Zotlabs\Storage\GitRepo as GitRepo;
define ( 'WIKI_ITEM_RESOURCE_TYPE', 'wiki' );
function wiki_list($nick, $observer_hash) {
if (local_channel() || remote_channel()) {
$sql_extra = item_permissions_sql(get_channel_by_nick($nick)['channel_id'], $observer_hash);
} else {
$sql_extra = " AND item_private = 0 ";
}
$wikis = q("SELECT * FROM item WHERE resource_type = '%s' AND mid = parent_mid AND item_deleted = 0 $sql_extra",
dbesc(WIKI_ITEM_RESOURCE_TYPE)
);
// TODO: query db for wikis the observer can access. Return with two lists, for read and write access
return array('wikis' => $wikis);
}
function wiki_pages() {
// TODO: scan wiki folder for pages
return array('pages' => array('page1.md', 'page2.md'));
}
function wiki_init_wiki($channel, $name) {
// Store the path as a relative path, but pass absolute path to mkdir
$path = 'store/[data]/git/'.$channel['channel_address'].'/wiki/'.$name;
if (!os_mkdir(__DIR__ . '/../' . $path, 0770, true)) {
logger('Error creating wiki path: ' . $name);
return null;
}
// Create GitRepo object
$git = new GitRepo($channel['channel_address'], null, false, $name, __DIR__ . '/../' . $path);
if(!$git->initRepo()) {
logger('Error creating new git repo in ' . $git->path);
return null;
}
return array('path' => $path);
}
function wiki_create_wiki($channel, $observer_hash, $name, $acl) {
$wikiinit = wiki_init_wiki($channel, $name);
if (!$wikiinit['path']) {
notice('Error creating wiki');
return array('item' => null, 'success' => false);
}
$path = $wikiinit['path'];
// Generate unique resource_id using the same method as item_message_id()
do {
$dups = false;
$resource_id = random_string();
$r = q("SELECT mid FROM item WHERE resource_id = '%s' AND resource_type = '%s' AND uid = %d LIMIT 1",
dbesc($resource_id),
dbesc(WIKI_ITEM_RESOURCE_TYPE),
intval($channel['channel_id'])
);
if (count($r))
$dups = true;
} while ($dups == true);
$ac = $acl->get();
$mid = item_message_id();
$arr = array(); // Initialize the array of parameters for the post
$item_hidden = 0; // TODO: Allow form creator to send post to ACL about new game automatically
$wiki_url = z_root() . '/wiki/' . $channel['channel_address'] . '/' . $name;
$arr['aid'] = $channel['channel_account_id'];
$arr['uid'] = $channel['channel_id'];
$arr['mid'] = $mid;
$arr['parent_mid'] = $mid;
$arr['item_hidden'] = $item_hidden;
$arr['resource_type'] = WIKI_ITEM_RESOURCE_TYPE;
$arr['resource_id'] = $resource_id;
$arr['owner_xchan'] = $channel['channel_hash'];
$arr['author_xchan'] = $observer_hash;
$arr['plink'] = z_root() . '/channel/' . $channel['channel_address'] . '/?f=&mid=' . $arr['mid'];
$arr['llink'] = $arr['plink'];
$arr['title'] = $name; // name of new wiki;
$arr['allow_cid'] = $ac['allow_cid'];
$arr['allow_gid'] = $ac['allow_gid'];
$arr['deny_cid'] = $ac['deny_cid'];
$arr['deny_gid'] = $ac['deny_gid'];
$arr['item_wall'] = 1;
$arr['item_origin'] = 1;
$arr['item_thread_top'] = 1;
$arr['item_private'] = intval($acl->is_private());
$arr['verb'] = ACTIVITY_CREATE;
$arr['obj_type'] = ACTIVITY_OBJ_WIKI;
$arr['object'] = array('path' => $path);
$arr['body'] = '[table][tr][td][h1]New Wiki[/h1][/td][/tr][tr][td][zrl=' . $wiki_url . ']' . $name . '[/zrl][/td][/tr][/table]';
$post = item_store($arr);
$item_id = $post['item_id'];
if ($item_id) {
proc_run('php', "include/notifier.php", "activity", $item_id);
return array('item' => $arr, 'success' => true);
} else {
return array('item' => null, 'success' => false);
}
}
function wiki_delete_wiki($resource_id) {
$item = q("SELECT id, object FROM item WHERE resource_type = '%s' AND resource_id = '%s' AND item_deleted = 0 limit 1",
dbesc(WIKI_ITEM_RESOURCE_TYPE),
dbesc($resource_id)
);
if (!$item) {
return array('items' => null, 'success' => false);
} else {
$drop = drop_item($item[0]['id'],false,DROPITEM_NORMAL,true);
$object = json_decode($item[0]['object'], true);
if(!realpath(__DIR__ . '/../' . $object['path'])) {
return array('items' => null, 'success' => false);
}
// Path to wiki exists
$abs_path = realpath(__DIR__ . '/../' . $object['path']);
$pathdel = rrmdir($abs_path);
if($pathdel) {
info('Wiki deleted successfully');
}
return array('item' => $item, 'success' => (($drop === 1 && $pathdel) ? true : false));
}
}
function wiki_exists_by_name($uid, $name) {
$item = q("SELECT id,resource_id FROM item WHERE resource_type = '%s' AND title = '%s' AND uid = '%s' AND item_deleted = 0 limit 1",
dbesc(WIKI_ITEM_RESOURCE_TYPE),
dbesc($name),
dbesc($uid)
);
if (!$item) {
return array('id' => null, 'resource_id' => null);
} else {
return array('id' => $item[0]['id'], 'resource_id' => $item[0]['resource_id']);
}
}
function wiki_get_permissions($resource_id, $owner_id, $observer_hash) {
// TODO: For now, only the owner can edit
$sql_extra = item_permissions_sql($owner_id, $observer_hash);
$r = q("SELECT * FROM item WHERE resource_type = '%s' AND resource_id = '%s' $sql_extra LIMIT 1",
dbesc(WIKI_ITEM_RESOURCE_TYPE),
dbesc($resource_id)
);
if(!$r) {
return array('read' => false, 'write' => false, 'success' => false);
} else {
return array('read' => true, 'write' => false, 'success' => true);
}
}
function wiki_create_page($name, $resource_id) {
$item = q("SELECT id,title,object FROM item WHERE resource_type = '%s' AND resource_id = '%s' AND item_deleted = 0 limit 1",
dbesc(WIKI_ITEM_RESOURCE_TYPE),
dbesc($resource_id)
);
if (!$item) {
return array('page' => null, 'message' => 'Wiki item not found.', 'success' => false);
}
$object = json_decode($item[0]['object'], true);
$wikiname = $item[0]['title'];
if (!realpath(__DIR__ . '/../' . $object['path'])) {
return array('page' => null, 'message' => 'Wiki directory does not exist.', 'success' => false);
}
// Path to wiki exists
$abs_path = realpath(__DIR__ . '/../' . $object['path']);
$page_path = $abs_path . '/' . $name;
if (is_file($page_path)) {
return array('page' => null, 'message' => 'Page already exists.', 'success' => false);
}
// Create file called $name in the path
if(!touch($page_path)) {
return array('page' => null, 'message' => 'Page file cannot be created.', 'success' => false);
} else {
return array('wiki' => $wikiname, 'message' => '', 'success' => true);
}
}
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