//Dstl (c) Crown Copyright 2017
package uk.gov.dstl.baleen.core.web;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.mockito.Mockito.doReturn;

import java.io.IOException;
import java.net.URL;
import java.util.Collections;

import org.apache.commons.io.IOUtils;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.junit.MockitoJUnitRunner;

import uk.gov.dstl.baleen.core.manager.BaleenManager;
import uk.gov.dstl.baleen.core.pipelines.BaleenPipelineManager;
import uk.gov.dstl.baleen.core.utils.YamlConfiguration;
import uk.gov.dstl.baleen.exceptions.BaleenException;

/**
 * Integration style test for {@link BaleenWebApi}.
 *
 *
 *
 */
@RunWith(MockitoJUnitRunner.Silent.class)
public class BaleenWebApiTest {

	@Mock
	BaleenPipelineManager pipelineManager;

	@Mock
	BaleenManager baleenManager;

	@Before
	public void before() {
		doReturn(pipelineManager).when(baleenManager).getPipelineManager();
		doReturn(Collections.emptyList()).when(pipelineManager).getAll();
	}

	@Test
	public void teststartStopWithoutServer() {
		try {
			new BaleenWebApi(baleenManager).start();
			fail("No exception for unconfigured web api");
		} catch (BaleenException e) {
			// Exception is good
		}

		try {
			new BaleenWebApi(baleenManager).stop();
		} catch (BaleenException e) {
			fail("Exception on stop unconfigured web api");

		}

	}

	@Test
	public void run() throws Exception {
		BaleenWebApi web = new BaleenWebApi(baleenManager);
		try {

			web.configure(new YamlConfiguration());
			web.start();

			// Wait for the server to be up
			try {
				Thread.sleep(3000);
			} catch (InterruptedException e) {
				// Do nothing
			}

			String metrics = getResponse("/metrics");
			assertFalse(metrics.isEmpty());

			String status = getResponse("/status");
			assertTrue(status.contains("ok"));

			String pipelines = getResponse("/pipelines");
			assertFalse(pipelines.isEmpty());

		} finally {

			web.stop();
		}
	}

	private String getResponse(String path) throws IOException {
		int port = BaleenWebApi.getPort(BaleenWebApi.DEFAULT_PORT);
		URL url = new URL("http://localhost:" + port + "/api/1" + path);
		return IOUtils.toString(url.openStream());
	}

	@Test
	public void testPortFromString() {
		assertNull(BaleenWebApi.getPortFromString("test"));
		assertNull(BaleenWebApi.getPortFromString("-1"));
		assertNull(BaleenWebApi.getPortFromString("123456789"));
		assertEquals(new Integer(1234), BaleenWebApi.getPortFromString("1234"));
	}
}