path: root/include/taxonomy.php

<?php /** @file */

// post categories and "save to file" use the same item.file table for storage.
// We will differentiate the different uses by wrapping categories in angle brackets
// and save to file categories in square brackets.
// To do this we need to escape these characters if they appear in our tag.

use Zotlabs\Lib\Cache;


function file_tag_encode($s) {
	return str_replace(array('<','>','[',']'),array('%3c','%3e','%5b','%5d'),$s);
}

function file_tag_decode($s) {
	return str_replace(array('%3c','%3e','%5b','%5d'),array('<','>','[',']'),$s);
}

function file_tag_file_query($table,$s,$type = 'file') {

	if($type == 'file')
		$termtype = TERM_FILE;
	else
		$termtype = TERM_CATEGORY;

	return sprintf(" AND " . (($table) ? dbesc($table) . '.' : '') . "id in (select term.oid from term where term.ttype = %d and term.term = '%s' and term.uid = " . (($table) ? dbesc($table) . '.' : '') . "uid ) ",
		intval($termtype),
		protect_sprintf(dbesc($s))
	);
}

function term_query($table,$s,$type = TERM_UNKNOWN, $type2 = '') {

	if($type2) {
		return sprintf(" AND " . (($table) ? dbesc($table) . '.' : '') . "id in (select term.oid from term where term.ttype in (%d, %d) and term.term = '%s' and term.uid = " . (($table) ? dbesc($table) . '.' : '') . "uid ) ",
			intval($type),
			intval($type2),
			protect_sprintf(dbesc($s))
		);
	}
	else {
		return sprintf(" AND " . (($table) ? dbesc($table) . '.' : '') . "id in (select term.oid from term where term.ttype = %d and term.term = '%s' and term.uid = " . (($table) ? dbesc($table) . '.' : '') . "uid ) ",
			intval($type),
			protect_sprintf(dbesc($s))
		);
	}
}


function term_item_parent_query($uid,$table,$s,$type = TERM_UNKNOWN, $type2 = '') {

	// Allow asterisks for wildcard search
	// In theory this means '%' will also do a wildcard search, but there appear to be multiple escape
	// issues with '%' in term names and trying to fix this with '\\%' here did not help.
	// Ideally I think we want '*' to indicate wildcards and allow '%' literally in names, but that is being
	// left for another developer on another day.

	$s = str_replace('*','%',$s);

	if($type2) {
		$r = q("select parent from item left join term on term.oid = item.id where term.ttype in (%d, %d) and term.term like '%s' and term.uid = %d and term.otype = 1 and item.verb != '%s'",
			intval($type),
			intval($type2),
			dbesc($s),
			intval($uid),
			dbesc(ACTIVITY_UPDATE)
		);
	}
	else {
		$r = q("select parent from item left join term on term.oid = item.id where term.ttype = %d and term.term like '%s' and term.uid = %d and term.otype = 1 and item.verb != '%s'",
			intval($type),
			dbesc($s),
			intval($uid),
			dbesc(ACTIVITY_UPDATE)
		);
	}

	if($r) {
		$str = '';
		foreach($r as $rv) {
			if($str)
				$str .= ',';
			$str .= intval($rv['parent']);
		}
		return " AND " . (($table) ? dbesc($table) . '.' : '') . "id in ( $str ) ";
	}
	return " AND false ";
}


function store_item_tag($uid,$iid,$otype,$type,$term,$url = '') {
	if(! $term)
		return false;

	$r = q("select * from term
		where uid = %d and oid = %d and otype = %d and ttype = %d
		and term = '%s' and url = '%s' ",
		intval($uid),
		intval($iid),
		intval($otype),
		intval($type),
		dbesc($term),
		dbesc($url)
	);
	if($r)
		return false;

	$r = q("insert into term (uid, oid, otype, ttype, term, url)
		values( %d, %d, %d, %d, '%s', '%s') ",
		intval($uid),
		intval($iid),
		intval($otype),
		intval($type),
		dbesc($term),
		dbesc($url)
	);

	return $r;
}


function get_terms_oftype($arr, $type) {
	$ret = [];

	if(!is_array($arr))
		return $ret;

	if(! is_array($type))
		$type = [$type];

	foreach($type as $t)
		foreach($arr as $x)
			if($x['ttype'] == $t)
				$ret[] = $x;

	return $ret;
}

function format_term_for_display($term) {
	$s = '';
	if(($term['ttype'] == TERM_HASHTAG) || ($term['ttype'] == TERM_COMMUNITYTAG))
		$s .= '#';
	elseif($term['ttype'] == TERM_FORUM)
		$s .= '!';
	elseif($term['ttype'] == TERM_MENTION)
		$s .= '@';
	else
		return $s;

	if($term['url'])
		$s .= '<a href="' . $term['url'] . '">' . htmlspecialchars($term['term'], ENT_COMPAT,'UTF-8') . '</a>';
	else
		$s .= htmlspecialchars($term['term'], ENT_COMPAT,'UTF-8');
	return $s;
}

// Tag cloud functions - need to be adpated to this database format


function tagadelic($uid, $count = 0, $authors = '', $owner = '', $flags = 0, $restrict = 0, $type = TERM_HASHTAG) {

	require_once('include/security.php');

	if(! perm_is_allowed($uid,get_observer_hash(),'view_stream'))
		return array();


	$item_normal = item_normal();
	$sql_options = item_permissions_sql($uid);
	$count = intval($count);

	if($flags) {
		if($flags === 'wall')
			$sql_options .= " and item_wall = 1 ";
	}

	if($authors) {
		if(! is_array($authors))
			$authors = array($authors);

		$sql_options .= " and author_xchan in (" . stringify_array($authors,true) . ") ";
	}

	if($owner) {
		$sql_options .= " and owner_xchan  = '" . dbesc($owner) . "' ";
	}

	// Fetch tags
	$r = q("select term, count(term) as total from term left join item on term.oid = item.id
		where term.uid = %d and term.ttype = %d
		and otype = %d and item_type = %d
		$sql_options $item_normal
		group by term order by total desc %s",
		intval($uid),
		intval($type),
		intval(TERM_OBJ_POST),
		intval($restrict),
		((intval($count)) ? "limit $count" : '')
	);


	if(! $r)
		return array();

	return Zotlabs\Text\Tagadelic::calc($r);

}



function card_tagadelic($uid, $count = 0, $authors = '', $owner = '', $flags = 0, $restrict = 0, $type = TERM_CATEGORY) {

	require_once('include/security.php');

	if(! perm_is_allowed($uid,get_observer_hash(),'view_pages'))
		return array();

	$item_normal = " and item.item_hidden = 0 and item.item_deleted = 0 and item.item_unpublished = 0 and item.item_delayed = 0 and item.item_pending_remove = 0
		and item.item_blocked = 0 and item.obj_type != 'http://purl.org/zot/activity/file' ";

	$sql_options = item_permissions_sql($uid);
	$count = intval($count);

	if($flags) {
		if($flags === 'wall')
			$sql_options .= " and item_wall = 1 ";
	}

	if($authors) {
		if(! is_array($authors))
			$authors = array($authors);

		$sql_options .= " and author_xchan in (" . stringify_array($authors,true) . ") ";
	}

	if($owner) {
		$sql_options .= " and owner_xchan  = '" . dbesc($owner) . "' ";
	}


	// Fetch tags

	$r = q("select term, count(term) as total from term left join item on term.oid = item.id
		where term.uid = %d and term.ttype = %d
		and otype = %d and item_type = %d
		$sql_options $item_normal
		group by term order by total desc %s",
		intval($uid),
		intval($type),
		intval(TERM_OBJ_POST),
		intval(ITEM_TYPE_CARD),
		((intval($count)) ? "limit $count" : '')
	);

	if(! $r)
		return array();

	return Zotlabs\Text\Tagadelic::calc($r);

}

function article_tagadelic($uid, $count = 0, $authors = '', $owner = '', $flags = 0, $restrict = 0, $type = TERM_CATEGORY) {

	require_once('include/security.php');

	if(! perm_is_allowed($uid,get_observer_hash(),'view_pages'))
		return array();


	$item_normal = " and item.item_hidden = 0 and item.item_deleted = 0 and item.item_unpublished = 0 and item.item_delayed = 0 and item.item_pending_remove = 0
		and item.item_blocked = 0 and item.obj_type != 'http://purl.org/zot/activity/file' ";

	$sql_options = item_permissions_sql($uid);
	$count = intval($count);

	if($flags) {
		if($flags === 'wall')
			$sql_options .= " and item_wall = 1 ";
	}

	if($authors) {
		if(! is_array($authors))
			$authors = array($authors);

		$sql_options .= " and author_xchan in (" . stringify_array($authors,true) . ") ";
	}

	if($owner) {
		$sql_options .= " and owner_xchan  = '" . dbesc($owner) . "' ";
	}


	// Fetch tags
	$r = q("select term, count(term) as total from term left join item on term.oid = item.id
		where term.uid = %d and term.ttype = %d
		and otype = %d and item_type = %d
		$sql_options $item_normal
		group by term order by total desc %s",
		intval($uid),
		intval($type),
		intval(TERM_OBJ_POST),
		intval(ITEM_TYPE_ARTICLE),
		((intval($count)) ? "limit $count" : '')
	);

	if(! $r)
		return array();

	return Zotlabs\Text\Tagadelic::calc($r);

}




function pubtagblock($net,$site,$limit,$recent = 0,$safemode = 1, $type = TERM_HASHTAG) {
	$o = '';

	$r = pub_tagadelic($net,$site,$limit,$recent,$safemode,$type);

	$link = z_root() . '/pubstream';

	if($r) {
		$o = '<div class="tagblock widget"><h3>' . (($recent) ? t('Trending') : t('Tags')) . '</h3><div class="tags" align="center">';
		foreach($r as $rr) {
		  $o .= '<span class="tag'.$rr[2].'">#</span><a href="'.$link . '?tag=' . urlencode($rr[0]).'" class="tag'.$rr[2].'">'.$rr[0].'</a> ' . "\r\n";
		}
		$o .= '</div></div>';
	}

	return $o;
}


function pub_tagadelic($net, $site, $limit, $recent, $safemode, $type) {

	$item_normal = item_normal();
	$count = intval($limit);
	$sys = get_sys_channel();
	$uids = " and item.uid = " . intval($sys['channel_id']) . " ";
	$sql_extra = item_permissions_sql($sys['channel_id']);

	$site_firehose_sql = '';

	if ($site) {
		$site_firehose_sql = " and owner_xchan in (select channel_hash from channel where channel_system = 0 and channel_removed = 0) ";
	}

	if($recent) {
		$sql_extra .= " and item.created > NOW() - INTERVAL " . db_quoteinterval(intval($recent) . ' DAY') . " ";
	}

	if($safemode) {
		$unsafetags = get_config('system','unsafepubtags', [ 'boobs', 'bot', 'rss', 'girl','girls', 'nsfw', 'sexy', 'nude' ]);
		if($unsafetags) {
			$sql_extra .= " and not term.term in ( " . stringify_array($unsafetags,true) . ") ";
		}
	}

	$key = __FUNCTION__ . "-" . md5($site . $recent . $safemode . $limit . $type);

	$content = Cache::get($key, '5 MINUTE');
	if(! $content) {

		$content = Cache::get($key, '1 MONTH');
		$arr = [
			"SELECT term, count(term) AS total FROM term LEFT JOIN item ON term.oid = item.id
			WHERE term.ttype = %d
			AND otype = %d
			AND item_type = %d
			AND item_private = 0
			$uids $item_normal $site_firehose_sql $sql_extra
			GROUP BY term ORDER BY total DESC %s",
			intval($type),
			intval(TERM_OBJ_POST),
			intval(ITEM_TYPE_POST),
			(intval($count) ? "LIMIT $count" : '')
		];

		\Zotlabs\Daemon\Master::Summon([ 'Cache_query', $key, base64_encode(json_encode($arr)) ]);
	}

	$r = unserialize($content);
	if(! $r)
		return [];

	return Zotlabs\Text\Tagadelic::calc($r);
}


function dir_tagadelic($count = 0, $hub = '') {

	$count = intval($count);

	if($hub) {
		$r = q("select xtag_term as term, count(xtag_term) as total from xtag
			left join hubloc on xtag_hash = hubloc_hash
			where xtag_flags = 0  and xtag_hash in (select hubloc_hash from hubloc where hubloc_host =  '%s' )
			group by xtag_term order by total desc %s",
			dbesc($hub),
			((intval($count)) ? "limit $count" : '')
		);
	}
	else {
		$r = q("select xtag_term as term, count(xtag_term) as total from xtag where xtag_flags = 0
			group by xtag_term order by total desc %s",
			((intval($count)) ? "limit $count" : '')
		);
	}
	if(! $r)
		return [];

	return Zotlabs\Text\Tagadelic::calc($r);
}


function app_tagblock($link,$count = 0) {
	$o = '';

	$r = app_tagadelic($count);

	if($r) {
		$o = '<div class="tagblock widget"><h3>' . t('Categories') . '</h3><div class="tags" align="center">';
		foreach($r as $rr) {
		  $o .= '<a href="'.$link .'/' . '?f=&cat=' . urlencode($rr[0]).'" class="tag'.$rr[2].'">'.$rr[0].'</a> ' . "\r\n";
		}
		$o .= '</div></div>';
	}

	return $o;
}

function app_tagadelic($count = 0) {

	if(! local_channel())
		return '';

	$count = intval($count);


	// Fetch tags
	$r = q("select term, count(term) as total from term left join app on term.uid = app_channel where term.uid = %d
		and term.otype = %d group by term order by total desc %s",
		intval(local_channel()),
		intval(TERM_OBJ_APP),
		((intval($count)) ? "limit $count" : '')
	);

	if(! $r)
		return array();

	return Zotlabs\Text\Tagadelic::calc($r);

}


function tagblock($link,$uid,$count = 0,$authors = '',$owner = '', $flags = 0,$restrict = 0,$type = TERM_HASHTAG) {
	$o = '';

	$r = tagadelic($uid,$count,$authors,$owner, $flags,$restrict,$type);

	if($r) {
		$o = '<div class="tagblock widget"><h3>' . t('Tags') . '</h3><div class="tags" align="center">';
		foreach($r as $rr) {
		  $o .= '<span class="tag'.$rr[2].'">#</span><a href="'.$link .'/' . '?f=&tag=' . urlencode($rr[0]).'" class="tag'.$rr[2].'">'.$rr[0].'</a> ' . "\r\n";
		}
		$o .= '</div></div>';
	}

	return $o;
}


function wtagblock($uid,$count = 0,$authors = '',$owner = '', $flags = 0,$restrict = 0,$type = TERM_HASHTAG) {
	$o = '';

	$r = tagadelic($uid,$count,$authors,$owner, $flags,$restrict,$type);

	if($r) {
		$c = q("select channel_address from channel where channel_id = %d limit 1",
			intval($uid)
		);

		$o = '<div class="tagblock widget"><h3>' . t('Tags') . '</h3><div class="tags" align="center">';
		foreach($r as $rr) {
		  $o .= '<span class="tag' . $rr[2] . '">#</span><a href="channel/' . $c[0]['channel_address'] . '?f=&tag=' . urlencode($rr[0]).'" class="tag'.$rr[2].'">'.$rr[0].'</a> ' . "\r\n";
		}
		$o .= '</div></div>';
	}

	return $o;
}


function catblock($uid,$count = 0,$authors = '',$owner = '', $flags = 0,$restrict = 0,$type = TERM_CATEGORY) {
	$o = '';

	$r = tagadelic($uid,$count,$authors,$owner,$flags,$restrict,$type);

	if($r) {
		$c = q("select channel_address from channel where channel_id = %d limit 1",
			intval($uid)
		);

		$o = '<div class="tagblock widget"><h3>' . t('Categories') . '</h3><div class="tags" align="center">';
		foreach($r as $rr) {
			$o .= '<a href="channel/' . $c[0]['channel_address']. '?f=&cat=' . urlencode($rr[0]).'" class="tag'.$rr[2].'">'.$rr[0].'</a> ' . "\r\n";
		}
		$o .= '</div></div>';
	}

	return $o;
}

function card_catblock($uid,$count = 0,$authors = '',$owner = '', $flags = 0,$restrict = 0,$type = TERM_CATEGORY) {
	$o = '';

	$r = card_tagadelic($uid,$count,$authors,$owner,$flags,$restrict,$type);

	if($r) {
		$c = q("select channel_address from channel where channel_id = %d limit 1",
			intval($uid)
		);

		$o = '<div class="tagblock widget"><h3>' . t('Categories') . '</h3><div class="tags" align="center">';
		foreach($r as $rr) {
			$o .= '<a href="cards/' . $c[0]['channel_address']. '?f=&cat=' . urlencode($rr[0]).'" class="tag'.$rr[2].'">'.$rr[0].'</a> ' . "\r\n";
		}
		$o .= '</div></div>';
	}

	return $o;
}


function article_catblock($uid,$count = 0,$authors = '',$owner = '', $flags = 0,$restrict = 0,$type = TERM_CATEGORY) {
	$o = '';

	$r = article_tagadelic($uid,$count,$authors,$owner,$flags,$restrict,$type);

	if($r) {
		$c = q("select channel_address from channel where channel_id = %d limit 1",
			intval($uid)
		);

		$o = '<div class="tagblock widget"><h3>' . t('Categories') . '</h3><div class="tags" align="center">';
		foreach($r as $rr) {
			$o .= '<a href="articles/' . $c[0]['channel_address']. '?f=&cat=' . urlencode($rr[0]).'" class="tag'.$rr[2].'">'.$rr[0].'</a> ' . "\r\n";
		}
		$o .= '</div></div>';
	}

	return $o;
}


function dir_tagblock($link,$r) {
	$o = '';

	if(! $r)
		$r = App::$data['directory_keywords'] ?? [];

	if($r) {
		$o = '<div class="dirtagblock widget"><h3>' . t('Keywords') . '</h3><div class="tags" align="center">';
		foreach($r as $rr) {
			$o .= '<a href="'.$link .'/' . '?f=&keywords=' . urlencode($rr['term']).'" class="tag'.$rr['normalise'].'" rel="nofollow" >'.$rr['term'].'</a> ' . "\r\n";
		}
		$o .= '</div></div>';
	}

	return $o;
}



	/**
	 * verbs: [0] = first person singular, e.g. "I want", [1] = 3rd person singular, e.g. "Bill wants"
	 * We use the first person form when creating an activity, but the third person for use in activities
	 * FIXME: There is no accounting for verb gender for languages where this is significant. We may eventually
	 * require obj_verbs() to provide full conjugations and specify which form to use in the $_REQUEST params to this module.
	 */

function obj_verbs() {
	$verbs = array(
		'has' => array( t('have'), t('has')),
		'wants' => array( t('want'), t('wants')),
		'likes' => array( t('like'), t('likes')),
		'dislikes' => array( t('dislike'), t('dislikes')),
	);

	$arr = array('verbs' => $verbs);
	call_hooks('obj_verbs', $arr);

	return	$arr['verbs'];
}


function obj_verb_selector($current = '') {
	$verbs = obj_verbs();
	$o = '<select class="obj-verb-selector" name="verb">';
	foreach($verbs as $k => $v) {
		$selected = (($k == $current) ? ' selected="selected" ' : '');
		$o .= '<option value="' . urlencode($k) . '"' . $selected . '>' . $v[1] . '</option>';
	}
	$o .= '</select>';

	return $o;
}

function get_things($profile_hash,$uid) {

	$sql_extra = permissions_sql($uid);

	$sql_extra_profile = (($profile_hash) ? " and obj_page = '" . $profile_hash . "' " : '');

	$r = q("select * from obj where obj_channel = %d and obj_type = %d $sql_extra $sql_extra_profile order by obj_verb, obj_term",
		intval($uid),
		intval(TERM_OBJ_THING)
	);

	$things = $sorted_things = null;

	$profile_hashes = array();

	if($r) {

		// if no profile_hash was specified (display on profile page mode), match each of the things to a profile name
		// (list all my things mode). This is harder than it sounds.

		foreach($r as $rr) {
			$rr['profile_name'] = '';
			if(! in_array($rr['obj_obj'],$profile_hashes))
				$profile_hashes[] = $rr['obj_obj'];
		}
		if(! $profile_hash) {
			$exp = stringify_array($profile_hashes,true);
			$p = q("select profile_guid as hash, profile_name as name from profile where profile_guid in ( $exp ) ");
			if($p) {
				foreach($r as $rr) {
					foreach($p as $pp) {
						if($rr['obj_page'] == $pp['hash']) {
							$rr['profile_name'] == $pp['name'];
						}
					}
				}
			}
 		}

		$things = array();

		// Use the system obj_verbs array as a sort key, since we don't really
		// want an alphabetic sort. To change the order, use a plugin to
		// alter the obj_verbs() array or alter it in code. Unknown verbs come
		// after the known ones - in no particular order.

		$v = obj_verbs();
		foreach($v as $k => $foo)
			$things[$k] = null;
		foreach($r as $rr) {

			$l = q("select xchan_name, xchan_photo_s, xchan_url from likes left join xchan on liker = xchan_hash where
				target_type = '%s' and target_id = '%s' and channel_id = %d",
				dbesc(ACTIVITY_OBJ_THING),
				dbesc($rr['obj_obj']),
				intval($uid)
			);

			for($x = 0; $x < count($l); $x ++) {
				$l[$x]['xchan_url'] = zid($l[$x]['xchan_url']);
				$l[$x]['xchan_photo_s'] = zid($l[$x]['xchan_photo_s']);
			}
			if(! $things[$rr['obj_verb']])
				$things[$rr['obj_verb']] = array();

			$things[$rr['obj_verb']][] = array('term' => $rr['obj_term'],'url' => $rr['obj_url'],'img' => $rr['obj_imgurl'], 'editurl' => z_root() . '/thing/' . $rr['obj_obj'], 'profile' => $rr['profile_name'],'term_hash' => $rr['obj_obj'], 'likes' => $l,'like_count' => count($l),'like_label' => tt('Like','Likes',count($l),'noun'));
		}
		$sorted_things = array();
		if($things) {
			foreach($things as $k => $v) {
				if(is_array($things[$k])) {
					$sorted_things[$k] = $v;
				}
			}
		}
	}
//logger('things: ' . print_r($sorted_things,true));

	return $sorted_things;
}