/*
 * Copyright (c) 2019-2020. Developed by Hedgecode.
 *
 * 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 org.hedgecode.chess.scanner.json;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;

import org.hedgecode.chess.scanner.ScannerException;
import org.hedgecode.chess.scanner.Settings;
import org.hedgecode.chess.scanner.SettingsBuilder;

/**
 * JSONSettingsBuilder
 *
 * @author Dmitry Samoshin aka gotty
 */
public class JSONSettingsBuilder implements SettingsBuilder {

    private static final String SETTINGS_RESOURCE_DIR = "/settings/";

    private static final Gson GSON = new GsonBuilder().create();

    @Override
    public Settings build(String jsonFileName) throws ScannerException {
        Settings settings;
        try (BufferedReader jsonReader = new BufferedReader(
                new InputStreamReader(
                        getClass().getResourceAsStream(
                                SETTINGS_RESOURCE_DIR.concat(jsonFileName)
                        )
                )
        )) {
            settings = GSON.fromJson(
                    jsonReader,
                    JSONSettings.class
            );
        } catch (IOException cause) {
            throw new ScannerException(
                    "scanner.failed.settings", cause, jsonFileName
            );
        }
        return settings;
    }

}