<?php

class Core_AclHelper {// Helper class for Acl

  public static function hasCreatePerms($acl) {
    foreach ($acl->getFieldListByIdZasob() as $fieldName) {// TODO: use getFieldList
      // echo"<p>\$acl->canCreateField({$fieldName}): (".$acl->canCreateField($fieldName).")</p>";
      if ($acl->canCreateField($fieldName)) return true;
    }
    return false;
  }

  public static function hasGeomFields($acl) {
    foreach ($acl->getFieldListByIdZasob() as $fieldName) {
      // echo"<p>\$acl->isGeomField({$fieldName}): (".$acl->isGeomField($fieldName).") \$acl->canReadField({$fieldName}): (".$acl->canReadField($fieldName).")</p>";
      if ($acl->isGeomField($fieldName) && $acl->canReadField($fieldName)) return true;
    }
    return false;
  }

  public static function getAclByNamespace($namespace, $forceTblAclInit) {
		if ('http' != substr($namespace, 0, 4)) $namespace = Api_WfsNs::getBaseWfsUri() . '/' . $namespace;//Request::getHostUri() . '/' . $namespace;

		$baseNsUri = Api_WfsNs::getBaseWfsUri();
		if ("{$baseNsUri}/" == substr($namespace, 0, strlen($baseNsUri) + 1)) {
			$schemaNs = substr($namespace, strlen($baseNsUri) + 1);
			$ns = explode('/', $schemaNs);// "http://biuro.biall-net.pl/wfs/  default_db/{$nazwa_tabeli}/{$nazwa_obj}
			$sourceName = array_shift($ns);// remove first element - source name
			if ('default_db' == $sourceName || 'p5_default_db' == $sourceName) {
				$sourceName = 'default_db';
				$objName = $ns[0];
				if (1 == count($ns)) {
					$acl = User::getAcl()->getObjectAcl($sourceName, $objName);
					if (!$acl) throw new Exception("Could not get acl for '{$schemaNs}'");
					$acl->init($forceTblAclInit);
					return $acl;
				}
				else throw new Exception("Nieznany namespace default_db: '{$schemaNs}'", 501);
			}
			else if ('default_objects' == $sourceName || 'SystemObjects' == $sourceName || 'p5_objects' == $sourceName) {
				$sourceName = 'objects';
				$objName = $ns[0];
				if (1 == count($ns)) {
					$acl = User::getAcl()->getObjectAcl($sourceName, $objName);
					if (!$acl) throw new Exception("Could not get acl for '{$schemaNs}'");
					$acl->init($forceTblAclInit);
					return $acl;
				}
				else throw new Exception("Nieznany namespace SystemObjects: '{$schemaNs}'", 501);
			}
			else if ('zasob_' == substr($sourceName, 0, 6)) {
				$dbName = substr($sourceName, 6);
				throw new Exception("TODO db[{$dbName}] namespace '{$schemaNs}'", 501);
			}
			else throw new Exception("Nieznany namespace '{$schemaNs}'", 501);
		}
		else throw new HttpException("Zasoby zewnętrzenj systemu nie są jeszcze zaimplementowane", 501);

		throw new HttpException("TODO L.".__LINE__." ns({$namespace})", 501);
	}

}