/**
 * ============LICENSE_START====================================================
 * org.onap.aaf
 * ===========================================================================
 * Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
 * ===========================================================================
 * 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.
 * ============LICENSE_END====================================================
 *
 */

package org.onap.aaf.cadi.locator.test;

import static org.junit.Assert.*;
import static org.hamcrest.CoreMatchers.*;
import org.junit.*;
import org.mockito.*;

import java.io.ByteArrayOutputStream;
import java.io.PrintStream;

import org.onap.aaf.cadi.Access;
import org.onap.aaf.cadi.Locator;
import org.onap.aaf.cadi.LocatorException;
import org.onap.aaf.cadi.PropAccess;
import org.onap.aaf.cadi.http.HClient;
import org.onap.aaf.cadi.http.HX509SS;
import org.onap.aaf.cadi.locator.HClientHotPeerLocator;

public class JU_HClientHotPeerLocator {

	@Mock private HX509SS ssMock;

	private PropAccess access;
	private ByteArrayOutputStream outStream;

	// Note: - The IP and port are irrelevant for these tests
	private static final String goodURL1 = "fakeIP1:fakePort1/38/-90";  // Approx St Louis
	private static final String goodURL2 = "fakeIP2:fakePort2/33/-96";  // Approx Dallas
	private static final String badURL = "~%$!@#$//";

	@Before
	public void setup() {
		MockitoAnnotations.initMocks(this);

		outStream = new ByteArrayOutputStream();
		access = new PropAccess(new PrintStream(outStream), new String[0]);
	}

	@Test
	public void test() throws LocatorException {
		HClientHotPeerLocator loc;
		String urlStr = goodURL1 + ',' + goodURL2;
		loc = new HClientHotPeerLocator(access, urlStr, 0, "38.627", "-90.199", ssMock);
		assertThat(loc.hasItems(), is(true));

		String[] messages = outStream.toString().split(System.lineSeparator());
		String preffered = messages[0].split(" ", 4)[3];
		String alternate = messages[1].split(" ", 4)[3];
		assertThat(preffered, is("Preferred Client is " + goodURL1));
		assertThat(alternate, is("Alternate Client is " + goodURL2));

		HClient firstClient = loc.get(loc.first());
		HClient bestClient = loc.bestClient();
		assertThat(bestClient, is(firstClient));

		Locator.Item item = loc.first();
		assertThat(loc.info(item), is(goodURL1));

		item = loc.next(item);
		assertThat(loc.info(item), is(goodURL2));

		item = loc.next(item);
		assertThat(item, is(nullValue()));
		assertThat(loc.info(item), is("Invalid Item"));

		item = loc.first();
		loc.invalidate(item);
		
		loc.invalidate(loc.bestClient());
		loc.invalidate(loc.get(loc.next(item)));
		loc.destroy();
	}

	@Test(expected = LocatorException.class)
	public void failuresTest() throws LocatorException {
		HClientHotPeerLocator loc;
		String urlStr = goodURL1 + ',' + goodURL2 + ',' + badURL;
		loc = new HClientHotPeerLocator(access, urlStr, 1000000, "38.627", "-90.199", ssMock);
		String[] messages = outStream.toString().split(System.lineSeparator());
		String preffered = messages[0].split(" ", 4)[3];
		String alternate1 = messages[1].split(" ", 4)[3];
		String alternate2 = messages[2].split(" ", 4)[3];
		assertThat(preffered, is("Preferred Client is " + badURL));
		assertThat(alternate1, is("Alternate Client is " + goodURL1));
		assertThat(alternate2, is("Alternate Client is " + goodURL2));

		outStream.reset();
		
		loc.invalidate(loc.first());

		loc.destroy();
		loc.best();
	}
	
	@Test
	public void hasNoItemTest() throws LocatorException {
		HClientHotPeerLocator loc;
		loc = new HClientHotPeerLocator(access, badURL, 0, "38.627", "-90.199", ssMock);
		assertThat(loc.hasItems(), is(false));
		loc.invalidate(loc.first());
	}

	@Test(expected = LocatorException.class)
	public void invalidClientTest() throws LocatorException {
		@SuppressWarnings("unused")
		HClientHotPeerLocator loc = new HClientHotPeerLocator(access, "InvalidClient", 0, "38.627", "-90.199", ssMock);
	}

	@Test(expected = LocatorException.class)
	public void coverageTest() throws LocatorException {
		CoverageLocator loc;
		String urlStr = goodURL1 + ',' + goodURL2;
		loc = new CoverageLocator(access, urlStr, 0, "38.627", "-90.199", ssMock);
		assertThat(loc._invalidate(null), is(nullValue()));
		loc._destroy(null);
		
		loc._newClient("bad string");
	}

	private class CoverageLocator extends HClientHotPeerLocator {
		public CoverageLocator(Access access, String urlstr, long invalidateTime, String localLatitude,
				String localLongitude, HX509SS ss) throws LocatorException {
			super(access, urlstr, invalidateTime, localLatitude, localLongitude, ss);
		}
		public HClient _newClient(String clientInfo) throws LocatorException { return super._newClient(clientInfo); }
		public HClient _invalidate(HClient client) { return super._invalidate(client); }
		public void _destroy(HClient client) { super._destroy(client); }
	}
}