package ca.uhn.fhir.rest.server;

import ca.uhn.fhir.context.FhirContext;
import ca.uhn.fhir.rest.annotation.IdParam;
import ca.uhn.fhir.rest.annotation.Read;
import ca.uhn.fhir.rest.api.Constants;
import ca.uhn.fhir.rest.client.MyPatientWithExtensions;
import ca.uhn.fhir.test.utilities.JettyUtil;
import ca.uhn.fhir.util.TestUtil;
import org.apache.commons.io.IOUtils;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.servlet.ServletHandler;
import org.eclipse.jetty.servlet.ServletHolder;
import org.hl7.fhir.dstu2016may.model.DateType;
import org.hl7.fhir.dstu2016may.model.IdType;
import org.hl7.fhir.dstu2016may.model.Patient;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.AfterAll;
import org.junit.jupiter.api.BeforeAll;

import java.nio.charset.StandardCharsets;
import java.util.concurrent.TimeUnit;

import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.stringContainsInOrder;
import static org.junit.jupiter.api.Assertions.assertEquals;

public class ReadDstu2_1Test {
	private static CloseableHttpClient ourClient;

	private static FhirContext ourCtx = FhirContext.forDstu2_1();
	private static final org.slf4j.Logger ourLog = org.slf4j.LoggerFactory.getLogger(ReadDstu2_1Test.class);
	private static int ourPort;
	private static Server ourServer;


	@Test
	public void testRead() throws Exception {

		HttpGet httpGet = new HttpGet("http://localhost:" + ourPort + "/Patient/2?_format=xml&_pretty=true");
		HttpResponse status = ourClient.execute(httpGet);

		String responseContent = IOUtils.toString(status.getEntity().getContent(), StandardCharsets.UTF_8);
		IOUtils.closeQuietly(status.getEntity().getContent());

		ourLog.info("Response was:\n{}", responseContent);

		assertEquals(200, status.getStatusLine().getStatusCode());
		assertEquals(null, status.getFirstHeader(Constants.HEADER_LOCATION));
		assertEquals("http://localhost:" + ourPort + "/Patient/2/_history/2", status.getFirstHeader(Constants.HEADER_CONTENT_LOCATION).getValue());

		//@formatter:off
		assertThat(responseContent, stringContainsInOrder(
			"<Patient xmlns=\"http://hl7.org/fhir\">", 
				"<id value=\"2\"/>", 
				"<meta>", 
					"<profile value=\"http://example.com/StructureDefinition/patient_with_extensions\"/>", 
				"</meta>", 
				"<modifierExtension url=\"http://example.com/ext/date\">", 
					"<valueDate value=\"2011-01-01\"/>", 
				"</modifierExtension>", 
			"</Patient>"));
		//@formatter:on
	}


	@AfterAll
	public static void afterClassClearContext() throws Exception {
		JettyUtil.closeServer(ourServer);
		TestUtil.clearAllStaticFieldsForUnitTest();
	}

	@BeforeAll
	public static void beforeClass() throws Exception {
		ourServer = new Server(0);

		PatientProvider patientProvider = new PatientProvider();

		ServletHandler proxyHandler = new ServletHandler();
		RestfulServer servlet = new RestfulServer(ourCtx);

		servlet.setResourceProviders(patientProvider);
		ServletHolder servletHolder = new ServletHolder(servlet);
		proxyHandler.addServletWithMapping(servletHolder, "/*");
		ourServer.setHandler(proxyHandler);
		JettyUtil.startServer(ourServer);
        ourPort = JettyUtil.getPortForStartedServer(ourServer);

		PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager(5000, TimeUnit.MILLISECONDS);
		HttpClientBuilder builder = HttpClientBuilder.create();
		builder.setConnectionManager(connectionManager);
		ourClient = builder.build();

	}

	public static class PatientProvider implements IResourceProvider {

		@Override
		public Class<Patient> getResourceType() {
			return Patient.class;
		}

		@Read(version=true)
		public MyPatientWithExtensions read(@IdParam IdType theIdParam) {
			MyPatientWithExtensions p0 = new MyPatientWithExtensions();
			p0.setId(theIdParam);
			if (theIdParam.hasVersionIdPart() == false) {
				p0.setIdElement(p0.getIdElement().withVersion("2"));
			}
			p0.setDateExt(new DateType("2011-01-01"));
			return p0;
		}


	}

}
