<?php
namespace Concrete\Core\Permission\Key;
use Loader;
use User;
use \Concrete\Core\Permission\Duration as PermissionDuration;

class ViewUserAttributesUserKey extends UserKey  {

	protected function getAllowedAttributeKeyIDs($list = false) {
		if (!$list) {
			$u = new User();
			$accessEntities = $u->getUserAccessEntityObjects();
			$list = $this->getAccessListItems(UserKey::ACCESS_TYPE_ALL, $accessEntities);
			$list = PermissionDuration::filterByActive($list);
		}

		$db = Loader::db();
		$allakIDs = $db->GetCol('select akID from UserAttributeKeys');
		$akIDs = array();
		foreach($list as $l) {
			if ($l->getAttributesAllowedPermission() == 'N') {
				$akIDs = array();
			}
			if ($l->getAttributesAllowedPermission() == 'C') {
				if ($l->getAccessType() == PermissionKey::ACCESS_TYPE_EXCLUDE) {
					$akIDs = array_values(array_diff($akIDs, $l->getAttributesAllowedArray()));
				} else {
					$akIDs = array_unique(array_merge($akIDs, $l->getAttributesAllowedArray()));
				}
			}
			if ($l->getAttributesAllowedPermission() == 'A') {
				$akIDs = $allakIDs;
			}
		}

		return $akIDs;
	}


	public function getMyAssignment() {
		$u = new User();
		$asl = new ViewUserAttributesUserPermissionAssignment();
		if ($u->isSuperUser()) {
			$asl->setAttributesAllowedPermission('A');
			return $asl;
		}

		$pae = $this->getPermissionAccessObject();
		if (!is_object($pae)) {
			return $asl;
		}

		$accessEntities = $u->getUserAccessEntityObjects();
		$accessEntities = $pae->validateAndFilterAccessEntities($accessEntities);
		$list = $this->getAccessListItems(UserKey::ACCESS_TYPE_ALL, $accessEntities);
		$list = PermissionDuration::filterByActive($list);

		foreach($list as $l) {
			if ($l->getAttributesAllowedPermission() == 'N') {
				$asl->setAttributesAllowedPermission('N');
			}

			if ($l->getAttributesAllowedPermission() == 'C') {
				$asl->setAttributesAllowedPermission('C');
			}

			if ($l->getAttributesAllowedPermission() == 'A') {
				$asl->setAttributesAllowedPermission('A');
			}
		}

		$asl->setAttributesAllowedArray($this->getAllowedAttributeKeyIDs($list));
		return $asl;
	}

	public function validate($obj = false) {
		$u = new User();
		if ($u->isSuperUser()) {
			return true;
		}

		$types = $this->getAllowedAttributeKeyIDs();
		if ($obj != false) {
			if (is_object($obj)) {
				$akID = $obj->getAttributeKeyID();
			} else {
				$akID = $obj;
			}
			return in_array($akID, $types);
		} else {
			return count($types) > 0;
		}
	}


}
