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/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * 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 apoc.refactor.util;

import apoc.util.ArrayBackedList;
import java.lang.reflect.Array;
import java.util.LinkedHashSet;
import java.util.Map;
import java.util.Set;
import org.neo4j.graphdb.Entity;
import org.neo4j.graphdb.Relationship;

/**
 * @author AgileLARUS
 * @since 3.0.0
 */
public class PropertiesManager {

    private PropertiesManager() {}

    public static void mergeProperties(Map properties, Entity target, RefactorConfig refactorConfig) {
        for (Map.Entry prop : properties.entrySet()) {
            String key = prop.getKey();
            String mergeMode = refactorConfig.getMergeMode(key, target instanceof Relationship);
            mergeProperty(target, refactorConfig, prop, key, mergeMode);
        }
    }

    private static void mergeProperty(
            Entity target,
            RefactorConfig refactorConfig,
            Map.Entry prop,
            String key,
            String mergeMode) {
        switch (mergeMode) {
            case RefactorConfig.OVERWRITE:
            case RefactorConfig.OVERRIDE:
                target.setProperty(key, prop.getValue());
                break;
            case RefactorConfig.DISCARD:
                if (!target.hasProperty(key)) {
                    target.setProperty(key, prop.getValue());
                }
                break;
            case RefactorConfig.COMBINE:
                combineProperties(prop, target, refactorConfig);
                break;
        }
    }

    public static void combineProperties(Map.Entry prop, Entity target, RefactorConfig refactorConfig) {
        if (!target.hasProperty(prop.getKey())) target.setProperty(prop.getKey(), prop.getValue());
        else {
            Set