268 lines
		
	
	
		
			6.1 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			268 lines
		
	
	
		
			6.1 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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namespace Zotlabs\Lib;
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/**
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 * @brief Chat related functions.
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 */
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class Chatroom {
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	/**
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	 * @brief Creates a chatroom.
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	 *
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	 * @param array $channel
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	 * @param array $arr
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	 * @return An associative array containing:
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	 *  - success: A boolean
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	 *  - message: (optional) A string
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	 */
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	static public function create($channel, $arr) {
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		$ret = array('success' => false);
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		$name = trim($arr['name']);
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		if(! $name) {
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			$ret['message'] = t('Missing room name');
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			return $ret;
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		}
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		$r = q("select cr_id from chatroom where cr_uid = %d and cr_name = '%s' limit 1",
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			intval($channel['channel_id']),
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			dbesc($name)
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		);
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		if($r) {
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			$ret['message'] = t('Duplicate room name');
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			return $ret;
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		}
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		$r = q("select count(cr_id) as total from chatroom where cr_aid = %d",
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			intval($channel['channel_account_id'])
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		);
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		if($r)
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			$limit = service_class_fetch($channel['channel_id'], 'chatrooms');
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		if(($r) && ($limit !== false) && ($r[0]['total'] >= $limit)) {
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			$ret['message'] = upgrade_message();
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			return $ret;
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		}
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		if(! array_key_exists('expire', $arr))
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			$arr['expire'] = 120;  // minutes, e.g. 2 hours
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		$created = datetime_convert();
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		$x = q("insert into chatroom ( cr_aid, cr_uid, cr_name, cr_created, cr_edited, cr_expire, allow_cid, allow_gid, deny_cid, deny_gid )
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			values ( %d, %d , '%s', '%s', '%s', %d, '%s', '%s', '%s', '%s' ) ",
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			intval($channel['channel_account_id']),
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			intval($channel['channel_id']),
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			dbesc($name),
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			dbesc($created),
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			dbesc($created),
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			intval($arr['expire']),
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			dbesc($arr['allow_cid']),
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			dbesc($arr['allow_gid']),
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			dbesc($arr['deny_cid']),
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			dbesc($arr['deny_gid'])
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		);
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		if($x)
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			$ret['success'] = true;
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		return $ret;
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	}
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	static public function destroy($channel,$arr) {
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		$ret = array('success' => false);
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		if(intval($arr['cr_id']))
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			$sql_extra = " and cr_id = " . intval($arr['cr_id']) . " ";
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		elseif(trim($arr['cr_name']))
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			$sql_extra = " and cr_name = '" . protect_sprintf(dbesc(trim($arr['cr_name']))) . "' ";
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		else {
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			$ret['message'] = t('Invalid room specifier.');
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			return $ret;
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		}
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		$r = q("select * from chatroom where cr_uid = %d $sql_extra limit 1",
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			intval($channel['channel_id'])
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		);
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		if(! $r) {
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			$ret['message'] = t('Invalid room specifier.');
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			return $ret;
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		}
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		build_sync_packet($channel['channel_id'],array('chatroom' => $r));
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		q("delete from chatroom where cr_id = %d",
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			intval($r[0]['cr_id'])
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		);
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		if($r[0]['cr_id']) {
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			q("delete from chatpresence where cp_room = %d",
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				intval($r[0]['cr_id'])
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			);
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			q("delete from chat where chat_room = %d",
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				intval($r[0]['cr_id'])
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			);
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		}
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		$ret['success'] = true;
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		return $ret;
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	}
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	static public function enter($observer_xchan, $room_id, $status, $client) {
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		if(! $room_id || ! $observer_xchan)
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			return;
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		$r = q("select * from chatroom where cr_id = %d limit 1",
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			intval($room_id)
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		);
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		if(! $r) {
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			notice( t('Room not found.') . EOL);
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			return false;
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		}
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		require_once('include/security.php');
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		$sql_extra = permissions_sql($r[0]['cr_uid']);
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		$x = q("select * from chatroom where cr_id = %d and cr_uid = %d $sql_extra limit 1",
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			intval($room_id),
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			intval($r[0]['cr_uid'])
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		);
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		if(! $x) {
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			notice( t('Permission denied.') . EOL);
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			return false;
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		}
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		$limit = service_class_fetch($r[0]['cr_uid'], 'chatters_inroom');
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		if($limit !== false) {
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			$y = q("select count(*) as total from chatpresence where cp_room = %d",
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				intval($room_id)
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			);
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			if($y && $y[0]['total'] > $limit) {
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				notice( t('Room is full') . EOL);
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				return false;
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			}
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		}
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		if(intval($x[0]['cr_expire'])) {
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			$r = q("delete from chat where created < %s - INTERVAL %s and chat_room = %d", 
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				db_utcnow(), 
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				db_quoteinterval( intval($x[0]['cr_expire']) . ' MINUTE' ),
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				intval($x[0]['cr_id'])
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			);
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		}
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		$r = q("select * from chatpresence where cp_xchan = '%s' and cp_room = %d limit 1",
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			dbesc($observer_xchan),
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			intval($room_id)
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		);
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		if($r) {
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			q("update chatpresence set cp_last = '%s' where cp_id = %d and cp_client = '%s'",
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				dbesc(datetime_convert()),
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				intval($r[0]['cp_id']),
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				dbesc($client)
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			);
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			return true;
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		}
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		$r = q("insert into chatpresence ( cp_room, cp_xchan, cp_last, cp_status, cp_client )
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			values ( %d, '%s', '%s', '%s', '%s' )",
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			intval($room_id),
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			dbesc($observer_xchan),
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			dbesc(datetime_convert()),
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			dbesc($status),
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			dbesc($client)
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		);
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		return $r;
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	}
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	function leave($observer_xchan, $room_id, $client) {
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		if(! $room_id || ! $observer_xchan)
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			return;
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		$r = q("select * from chatpresence where cp_xchan = '%s' and cp_room = %d and cp_client = '%s' limit 1",
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			dbesc($observer_xchan),
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			intval($room_id),
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			dbesc($client)
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		);
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		if($r) {
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			q("delete from chatpresence where cp_id = %d",
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				intval($r[0]['cp_id'])
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			);
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		}
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		return true;
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	}
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	static public function roomlist($uid) {
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		require_once('include/security.php');
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		$sql_extra = permissions_sql($uid);
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		$r = q("select allow_cid, allow_gid, deny_cid, deny_gid, cr_name, cr_expire, cr_id, count(cp_id) as cr_inroom from chatroom left join chatpresence on cr_id = cp_room where cr_uid = %d $sql_extra group by cr_name, cr_id order by cr_name",
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			intval($uid)
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		);
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		return $r;
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	}
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	static public function list_count($uid) {
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		require_once('include/security.php');
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		$sql_extra = permissions_sql($uid);
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		$r = q("select count(*) as total from chatroom where cr_uid = %d $sql_extra",
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			intval($uid)
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		);
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		return $r[0]['total'];
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	}
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	/**
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	 * create a chat message via API.
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	 * It is the caller's responsibility to enter the room.
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 	*/
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	static public function message($uid, $room_id, $xchan, $text) {
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		$ret = array('success' => false);
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		if(! $text)
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			return;
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		$sql_extra = permissions_sql($uid);
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		$r = q("select * from chatroom where cr_uid = %d and cr_id = %d $sql_extra",
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			intval($uid),
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			intval($room_id)
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		);
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		if(! $r)
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			return $ret;
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		$arr = array(
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			'chat_room' => $room_id,
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			'chat_xchan' => $xchan,
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			'chat_text' => $text
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		);
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		call_hooks('chat_message', $arr);
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		$x = q("insert into chat ( chat_room, chat_xchan, created, chat_text )
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			values( %d, '%s', '%s', '%s' )",
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			intval($room_id),
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			dbesc($xchan),
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			dbesc(datetime_convert()),
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			dbesc($arr['chat_text'])
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		);
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		$ret['success'] = true;
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		return $ret;
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	}
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}
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