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/*
  Copyright (c) 2012, 2020, Anatole Tresch, Werner Keil and others by the @author tag.

  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.javamoney.moneta.convert.imf;

import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.money.convert.ConversionContext;
import javax.money.convert.ExchangeRateProvider;
import javax.money.convert.ProviderContext;
import javax.money.convert.ProviderContextBuilder;
import javax.money.convert.RateType;
import javax.money.spi.Bootstrap;

import org.javamoney.moneta.spi.loader.LoaderService;

/**
 * Implements a {@link ExchangeRateProvider} that loads the IMF conversion data.
 * In most cases this provider will provide chained rates, since IMF always is
 * converting from/to the IMF SDR currency unit.
 *
 * @author Anatole Tresch
 * @author Werner Keil
 */
public class IMFRateProvider extends IMFAbstractRateProvider {

	private static final Logger LOG = Logger
			.getLogger(IMFRateProvider.class.getName());

    /**
     * The data id used for the LoaderService.
     */
    private static final String DATA_ID = IMFRateProvider.class.getSimpleName();
    /**
     * The {@link ConversionContext} of this provider.
     */
    private static final ProviderContext CONTEXT = ProviderContextBuilder.of("IMF", RateType.DEFERRED)
            .set("providerDescription", "International Monetary Fund")
            .set("days", 1)
            //.set("User-Agent", "Chrome/51.0.2704.103")
            .build();

    public IMFRateProvider() {
        super(CONTEXT);
        LoaderService loader = Bootstrap.getService(LoaderService.class);
        loader.addLoaderListener(this, DATA_ID);
        try {
            loader.loadData(DATA_ID);
        } catch (IOException e) {
        	LOG.log(Level.WARNING, "Error loading initial data from IMF provider...", e);
        }
    }

}