package at.gv.util.client.omsp;

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.methods.GetMethod;

import at.gv.util.MiscUtil;
import at.gv.util.xsd.omsp.SignedStatusResponse;

public class OMSPClient {

	public static SignedStatusResponse checkMandateStatus(String serviceURL, String mandateId, Date date) throws OMSPClientException {
		MiscUtil.assertNotNull(serviceURL, "serviceURL");
		MiscUtil.assertNotNull(mandateId, "mandateId");
		HttpClient httpclient = new HttpClient();
		GetMethod method = new GetMethod(serviceURL);
		String queryString = mandateId;
		if (date != null) {
			SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
			mandateId += "+" + sdf.format(date);
		}
		method.setQueryString(queryString);
		try {
	    int code = httpclient.executeMethod(method);
	    if (code != 200) {
	    	throw new OMSPClientException("Response code " + code + " returned. Must be 200.");
	    }
	    JAXBContext ctx = JAXBContext.newInstance(SignedStatusResponse.class.getPackage().getName());
	    return (SignedStatusResponse) ctx.createUnmarshaller().unmarshal(method.getResponseBodyAsStream());
    } catch (HttpException e) {
	    throw new OMSPClientException(e);
    } catch (IOException e) {
    	throw new OMSPClientException(e);
    } catch (JAXBException e) {
    	throw new OMSPClientException(e);
    }
	}
	
}