package geniusweb.progress;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

import java.io.IOException;
import java.util.Arrays;
import java.util.Date;
import java.util.LinkedList;
import java.util.List;

import org.junit.Before;
import org.junit.Test;

import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.ObjectMapper;

import geniusweb.deadline.DeadlineRounds;
import tudelft.utilities.junit.GeneralTests;

public class ProgressRoundsTest extends GeneralTests<Progress> {
	private DeadlineRounds deadline = mock(DeadlineRounds.class);
	private final static Integer TESTROUNDS = 10;
	private final static long TESTTIME = 10; // milliseconds!

	private final Date date = new Date(999l);
	private final Date date0 = new Date(0l);

	private final Progress deadline1 = new ProgressRounds(20, 0, date);
	private final Progress deadline2 = new ProgressRounds(20, 0, date);
	private final Progress deadline3 = new ProgressRounds(30, 0, date);
	private final Progress deadline4 = new ProgressTime(20l, date0);
	private final Progress deadline5 = new ProgressTime(20l, date);
	private ProgressRounds progress;
	private final ObjectMapper jackson = new ObjectMapper();
	private final String progressstring = "{\"ProgressRounds\":{\"duration\":10,\"currentRound\":0,\"endtime\":999}}";

	private final long start = 1234;
	private final Date end = new Date(start + TESTTIME);
	private final ProgressRounds pr = new ProgressRounds(TESTROUNDS, 4, end);

	@Before
	public void before() {
		when(deadline.getRounds()).thenReturn(TESTROUNDS);
		progress = new ProgressRounds(deadline.getRounds(), 0, date);

	}

	@Override
	public List<List<Progress>> getGeneralTestData() {
		List<List<Progress>> list = new LinkedList<>();
		list.add(Arrays.asList(deadline1, deadline2));
		list.add(Arrays.asList(deadline3));
		list.add(Arrays.asList(deadline4));
		list.add(Arrays.asList(deadline5));
		return list;
	}

	@Override
	public List<String> getGeneralTestStrings() {
		return Arrays.asList("ProgressRounds\\[0.*20\\]",
				"ProgressRounds\\[0.*30\\]", "ProgressTime\\[0.*20ms\\]",
				"ProgressTime\\[999.*20ms\\]");
	}

	@Test
	public void testInit() {
		assertEquals((Double) 0d, progress.get(1l));
	}

	@Test
	public void testCurrentRound() {
		assertEquals((Integer) 0, progress.getCurrentRound());
	}

	@Test
	public void testAdvance() {
		ProgressRounds p = progress;
		int n = 0;
		while (n <= TESTROUNDS) {
			assertEquals((Double) ((double) n / TESTROUNDS), p.get(1l));
			n++;
			p = p.advance();
		}
	}

	@Test
	public void testAdvanceWhenDeadlineReached() {
		ProgressRounds p = new ProgressRounds(TESTROUNDS, 9, date);
		p = p.advance();
		assertEquals((Double) 1d, p.get(1l));
	}

	@Test
	public void testSerialize() throws JsonProcessingException {
		System.out.println(jackson.writeValueAsString(progress));
		assertEquals(progressstring, jackson.writeValueAsString(progress));

	}

	@Test
	public void testDeserialize()
			throws JsonParseException, JsonMappingException, IOException {
		assertEquals(progress,
				jackson.readValue(progressstring, Progress.class));

	}

	@SuppressWarnings("unused")
	@Test(expected = IllegalArgumentException.class)
	public void testIllegalArg1() {
		new ProgressRounds(10, 11, date);
	}

	@SuppressWarnings("unused")
	@Test(expected = IllegalArgumentException.class)
	public void testIllegalArg2() {
		new ProgressRounds(10, -1, date);
	}

	@Test
	public void pastDeadline() {
		assertFalse(pr.isPastDeadline(start));
		assertTrue(pr.isPastDeadline(start + TESTTIME + 1));
		assertFalse(pr.isPastDeadline(start + TESTTIME - 1));
		assertTrue(new ProgressRounds(TESTROUNDS, TESTROUNDS, end)
				.isPastDeadline(start + TESTTIME + 1));
	}

	@Test
	public void terminationTime() {
		assertEquals(start + TESTTIME, pr.getTerminationTime().getTime());
	}

	@Test
	public void get() {
		// time does not matter for rounds-based deadline
		assertEquals((Double) 0.4d, pr.get(start));
		assertEquals((Double) 0.4d, pr.get(start + TESTTIME + 1));
		assertEquals((Double) 0.4d, pr.get(start + TESTTIME));
		assertEquals((Double) 0.4d, pr.get(start + TESTTIME / 2));
		assertEquals((Double) 0.4d, pr.get(start - 10));
		assertEquals((Double) 0.4d, pr.get(start + TESTTIME + 10));

		assertEquals((Double) 0.1d,
				new ProgressRounds(TESTROUNDS, 1, end).get(start));
		assertEquals((Double) 1d,
				new ProgressRounds(TESTROUNDS, TESTROUNDS, end).get(start));
	}

	@Test
	public void totalRounds() {
		assertEquals((Integer) 10, pr.getTotalRounds());
	}
}