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Simple Java library for non-auth methods of Last.FM API

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/*
 * Copyright (c) 2017 BlizzedRu (Ivan Vlasov)
 *
 * 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 ru.blizzed.openlastfm.models;

import com.google.gson.Gson;
import com.google.gson.JsonObject;

/**
 * Implementation of {@link ModelParser} for simple object
 *
 * @param  type of expected model
 *
 * @author BlizzedRu
 */
public class ObjectModelParser extends ModelParser {

    protected Class contentTypeClass;

    public ObjectModelParser(String elementTagName, Class contentTypeClass) {
        super(elementTagName);
        this.contentTypeClass = contentTypeClass;
    }

    @Override
    public ModelType parse(JsonObject root) {
        if (getElementTagName().isEmpty()) return parseObject(root);
        return parseObject(root.getAsJsonObject(getElementTagName()));
    }

    private ModelType parseObject(JsonObject jsonObject) {
        return new Gson().fromJson(jsonObject, contentTypeClass);
    }

}