/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.jackrabbit.oak.security.user;

import javax.annotation.Nonnull;

import org.apache.jackrabbit.oak.core.ReadOnlyTree;
import org.apache.jackrabbit.oak.spi.commit.Validator;
import org.apache.jackrabbit.oak.spi.commit.ValidatorProvider;
import org.apache.jackrabbit.oak.spi.security.ConfigurationParameters;
import org.apache.jackrabbit.oak.spi.state.NodeState;
import org.apache.jackrabbit.oak.util.NodeUtil;

import static com.google.common.base.Preconditions.checkNotNull;

/**
 * Provides a validator for user and group management.
 */
class UserValidatorProvider implements ValidatorProvider {

    private final ConfigurationParameters config;

    UserValidatorProvider(ConfigurationParameters config) {
        this.config = checkNotNull(config);
    }

    //--------------------------------------------------< ValidatorProvider >---
    @Nonnull
    @Override
    public Validator getRootValidator(NodeState before, NodeState after) {

        NodeUtil rootBefore = new NodeUtil(new ReadOnlyTree(before));
        NodeUtil rootAfter = new NodeUtil(new ReadOnlyTree(after));

        return new UserValidator(rootBefore, rootAfter, this);
    }

    //-----------------------------------------------------------< internal >---
    @Nonnull
    ConfigurationParameters getConfig() {
        return config;
    }
}