/*
 * 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.syncope.core.persistence.neo4j.entity;

import com.fasterxml.jackson.core.type.TypeReference;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
import java.util.Optional;
import org.apache.syncope.core.persistence.api.entity.Schema;
import org.apache.syncope.core.persistence.common.validation.SchemaKeyCheck;
import org.apache.syncope.core.provisioning.api.serialization.POJOHelper;
import org.springframework.data.annotation.Transient;
import org.springframework.data.neo4j.core.schema.Node;
import org.springframework.data.neo4j.core.schema.PostLoad;

@Node(Neo4jSchema.NODE)
@SchemaKeyCheck
public abstract class Neo4jSchema extends AbstractProvidedKeyNode implements Schema {

    private static final long serialVersionUID = -90123646849845441L;

    public static final String NODE = "Schema";

    protected static final TypeReference<HashMap<Locale, String>> LABEL_TYPEREF =
            new TypeReference<HashMap<Locale, String>>() {
    };

    private String labels;

    @Transient
    private Map<Locale, String> labelMap = new HashMap<>();

    @Override
    public Optional<String> getLabel(final Locale locale) {
        return Optional.ofNullable(labelMap.get(locale));
    }

    @Override
    public Map<Locale, String> getLabels() {
        return labelMap;
    }

    protected void json2map(final boolean clearFirst) {
        if (clearFirst) {
            getLabels().clear();
        }
        if (labels != null) {
            getLabels().putAll(POJOHelper.deserialize(labels, LABEL_TYPEREF));
        }
    }

    @PostLoad
    public void postLoad() {
        json2map(false);
    }

    public void postSave() {
        json2map(true);
    }

    public void map2json() {
        labels = POJOHelper.serialize(getLabels());
    }
}
