/*
    * Copyright 2010 James Pether Sörling
    *
    * 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.
   *
   *	$Id$
   *  $HeadURL$
  */
  package com.hack23.cia.service.external.worldbank.impl;
  
  import java.util.List;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.beans.factory.annotation.Qualifier;
  import org.springframework.oxm.Unmarshaller;
  import org.springframework.stereotype.Component;
  
  import com.hack23.cia.model.external.worldbank.data.impl.DataElement;
  import com.hack23.cia.model.external.worldbank.data.impl.WorldBankData;
  import com.hack23.cia.service.external.worldbank.api.DataFailureException;
  import com.hack23.cia.service.external.worldbank.api.WorldBankDataApi;
  
  /**
   * The Class WorldbankDataApiImpl.
   */
  @Component
  final class WorldbankDataApiImpl extends AbstractWorldBankApiImpl implements WorldBankDataApi {
  
  	/** The Constant LOGGER. */
  	private static final Logger LOGGER = LoggerFactory.getLogger(WorldbankDataApiImpl.class);
  
  	/** The Constant COUNTRY_KEY. */
  	private static final String COUNTRY_KEY = "${COUNTRY_KEY}";
  
  	/** The Constant INDICATOR_COUNTRY_DATA. */
  	private static final String INDICATOR_COUNTRY_DATA ="http://api.worldbank.org/countries/${COUNTRY_KEY}/indicators/${INDICATOR_KEY}?per_page=1000";
  
  	/** The Constant INDICATOR_KEY. */
  	private static final String INDICATOR_KEY = "${INDICATOR_KEY}";
  
  	/**
  	 * The Constant
  	 * PROBLEM_GETTING_WORLDBANK_DATA_FOR_COUNTRY_CODE_S_INDICATOR_ID_S.
  	 */
  	private static final String PROBLEM_GETTING_WORLDBANK_DATA_FOR_COUNTRY_CODE_S_INDICATOR_ID_S = "Problem getting worldbank data for countryCode:{} ,indicatorId:{} ";
  	/**
  	 * The Constant
  	 * XMLNS_WB_HTTP_DATA_WORLDBANK_EXTERNAL_MODEL_CIA_HACK23_COM_IMPL.
  	 */
  	private static final String XMLNS_WB_HTTP_DATA_WORLDBANK_EXTERNAL_MODEL_CIA_HACK23_COM_IMPL = "xmlns:wb=\"http://data.worldbank.external.model.cia.hack23.com/impl\"";
  
  	/** The data unmarshaller. */
  	@Autowired
  	@Qualifier("worldbankOrgDataMarshaller")
  	private Unmarshaller dataUnmarshaller;
  
  
  	/**
  	 * Instantiates a new worldbank data api impl.
  	 */
  	public WorldbankDataApiImpl() {
  		super();
  	}
  
  	@Override
  	public List<WorldBankData> getData(final String countryCode,final String indicatorId) throws DataFailureException {
  		try {
  			final String url = INDICATOR_COUNTRY_DATA.replace(COUNTRY_KEY,countryCode);
  			return ((DataElement) getXmlAgent().unmarshallXml(dataUnmarshaller, url.replace(INDICATOR_KEY, indicatorId),null,XMLNS_WB_HTTP_WWW_WORLDBANK_ORG, XMLNS_WB_HTTP_DATA_WORLDBANK_EXTERNAL_MODEL_CIA_HACK23_COM_IMPL)).getData();
  		} catch (final Exception e) {
  			LOGGER.warn(PROBLEM_GETTING_WORLDBANK_DATA_FOR_COUNTRY_CODE_S_INDICATOR_ID_S,countryCode,indicatorId);
  			throw new DataFailureException(e);
  		}
  	}
  
  }