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/* 
 * The MIT License
 * 
 * Copyright (c) 2010 Bruno P. Kinoshita 
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package br.eti.kinoshita.testlinkjavaapi;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import org.apache.xmlrpc.XmlRpcException;
import org.apache.xmlrpc.client.XmlRpcClient;

import br.eti.kinoshita.testlinkjavaapi.constants.TestLinkParams;
import br.eti.kinoshita.testlinkjavaapi.util.TestLinkAPIException;
import br.eti.kinoshita.testlinkjavaapi.util.Util;

/**
 * @author Bruno P. Kinoshita - http://www.kinoshita.eti.br
 * @since 1.9.0-1
 */
abstract class BaseService {

	private static final Integer FALSE_IN_PHP = 0;

	/**
	 * XML-RPC client.
	 */
	private XmlRpcClient xmlRpcClient;

	/**
	 * TestLink User devkey.
	 */
	private String devKey;

	/**
	 * @param xmlRpcClient
	 *            XML-RPC Client.
	 * @param devKey
	 *            TestLink user DevKey.
	 */
	public BaseService(XmlRpcClient xmlRpcClient, String devKey) {
		this.xmlRpcClient = xmlRpcClient;
		this.devKey = devKey;
	}

	/**
	 * Executes the XML-RPC call to the method in the server, passing the
	 * execution data map.
	 * 
	 * @param methodName
	 *            name of the method.
	 * @param executionData
	 *            execution data map.
	 * @return Server response.
	 * @throws XmlRpcException
	 */
	public Object executeXmlRpcCall(String methodName,
			Map executionData) throws XmlRpcException,
			TestLinkAPIException {
		List params = new ArrayList();

		if (executionData != null) {
			if (executionData.get(TestLinkParams.DEV_KEY.toString()) == null) {
				executionData.put(TestLinkParams.DEV_KEY.toString(),
						this.devKey);
			}
			params.add(executionData);
		}

		final Object o = this.xmlRpcClient.execute(methodName, params);
		this.checkResponseError(o);
		return o;
	}

	/**
	 * @param response
	 */
	@SuppressWarnings("unchecked")
	protected void checkResponseError(Object response)
			throws TestLinkAPIException {
		// may be an array of errors (IXError)
		if (response instanceof Object[]) {
			final Object[] responseArray = Util.castToArray(response);
			for (int i = 0; i < responseArray.length; i++) {
				Object maybeAMap = responseArray[i];
				// may be a map with error code and message
				if (maybeAMap instanceof Map) {
					Map errorMap = (Map) maybeAMap;
					Integer code = Util.getInteger(errorMap, "code");
					String message = Util.getString(errorMap, "message");

					if (code != null) {
						throw new TestLinkAPIException(code, message);
					}

				} // endif
			} // endfor
		} else if (response instanceof Map) {
			final Map errorMap = (Map) response;
			final Integer statusOk = Util.getInteger(errorMap, "status_ok");
			final String message = Util.getString(errorMap, "msg");
			if (statusOk != null && statusOk.equals(FALSE_IN_PHP)) {
				throw new TestLinkAPIException(statusOk, message);
			}
		}
	}

}