/*
 * Copyright (c) 2008-2017, Hazelcast, Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.hazelcast.security.permission;

import java.security.Permission;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;

public abstract class PermissionTestSupport {

    protected abstract Permission createPermission(String name, String... actions);

    protected class CheckPermission {

        private static final String DEFAULT_ALLOWED_NAME = "someMapsPermission";
        private static final String DEFAULT_REQUESTED_NAME = "someMapsPermission";

        private String requested = null;
        private String[] allowed = null;
        private Boolean expectedResult = null;
        private String allowedName = DEFAULT_ALLOWED_NAME;
        private String requestedName = DEFAULT_REQUESTED_NAME;

        CheckPermission withRequestedName(String requestedName) {
            this.requestedName = requestedName;
            return this;
        }

        CheckPermission withAllowedName(String allowedName) {
            this.allowedName = allowedName;
            return this;
        }

        CheckPermission of(String requested) {
            this.requested = requested;
            return this;
        }

        CheckPermission against(String... allowed) {
            this.allowed = allowed;
            return this;
        }

        CheckPermission expect(boolean expectedResult) {
            this.expectedResult = expectedResult;
            return this;
        }

        void run() {
            if (requested != null && allowed != null && expectedResult != null) {
                Permission allowedPermissions = createPermission(allowedName, allowed);
                Permission requestedPermission = createPermission(requestedName, requested);

                boolean actualResult = allowedPermissions.implies(requestedPermission);

                assertEquals("Access applied incorrectly for requested action of " + requestedPermission
                        + " on permitted permissions of " + allowedPermissions, expectedResult, actualResult);
            } else {
                fail("Requested and/or allowed and/or expect not set");
            }
        }
    }

}