package com.plannaplan.services;

import static org.junit.Assert.assertTrue;

import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

import com.plannaplan.entities.Assignment;
import com.plannaplan.entities.Commision;
import com.plannaplan.entities.Exchange;
import com.plannaplan.entities.Groups;
import com.plannaplan.entities.User;
import com.plannaplan.models.MatchData;
import com.plannaplan.repositories.CommisionRepository;
import com.plannaplan.types.UserRoles;
import com.plannaplan.types.WeekDay;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.annotation.DirtiesContext;
import org.springframework.test.annotation.DirtiesContext.MethodMode;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest
@ContextConfiguration
public class ExchangeServiceTest {

	@Autowired
	private AssignmentService assignmentService;

	@Autowired
	private GroupService groupService;

	@Autowired
	private UserService userService;

	@Autowired
	private CommisionRepository commisionRepository;

	@Autowired
	private ExchangeService exchangeService;

	@Test
	@DirtiesContext(methodMode = MethodMode.BEFORE_METHOD)
	public void shouldReturnUniqMatches() {
		final User user1 = this.userService.save(
				new User(null, null, "shouldReturnMatches@ExchangeRepository.test", "123454", UserRoles.STUDENT, 451));
		final Groups group1 = this.groupService.save(new Groups(123, "A2-3", null, 430, WeekDay.MONDAY, null));
		final Commision commision1 = this.commisionRepository.save(new Commision(user1));
		final User user2 = this.userService.save(
				new User(null, null, "shouldReturnMatches@ExchangeRepository.test", "123454", UserRoles.STUDENT, 451));
		final Groups group2 = this.groupService.save(new Groups(123, "A2-3", null, 430, WeekDay.MONDAY, null));
		final Commision commision2 = this.commisionRepository.save(new Commision(user2));
		final Assignment assignmentUser1 = this.assignmentService.save(new Assignment(group1, commision1));
		final Assignment assignmentUser2 = this.assignmentService.save(new Assignment(group2, commision2));

		this.assignmentService.callAcceptAlgorythm();

		this.exchangeService.save(new Exchange(assignmentUser1, group2));
		this.exchangeService.save(new Exchange(assignmentUser2, group1));

		final List<MatchData> uniqList = this.exchangeService.getMatches();
		assertTrue(uniqList.size() == 1);
	}

	@Test
	@DirtiesContext(methodMode = MethodMode.BEFORE_METHOD)
	public void shouldPerformExchange() throws Exception{
		User user1 = this.userService.save(
				new User(null, null, "1shouldReturnMatches@ExchangeRepository.test", "123454", UserRoles.STUDENT, 451));
		final Long user1Id = user1.getId();
		final Groups group1 = this.groupService.save(new Groups(123, "A2-3", null, 430, WeekDay.MONDAY, null));
		final Commision commision1 = this.commisionRepository.save(new Commision(user1));

		User user2 = this.userService.save(
				new User(null, null, "2shouldReturnMatches@ExchangeRepository.test", "123455", UserRoles.STUDENT, 452));
		final Long user2Id = user2.getId();
		final Groups group2 = this.groupService.save(new Groups(123, "A2-3", null, 430, WeekDay.THURSDAY, null));
		final Commision commision2 = this.commisionRepository.save(new Commision(user2));

		User user3 = this.userService.save(
				new User(null, null, "3shouldReturnMatches@ExchangeRepository.test", "123456", UserRoles.STUDENT, 453));
		final Long user3Id = user3.getId();
		final Groups group3 = this.groupService.save(new Groups(123, "A2-3", null, 430, WeekDay.WEDNESDAY, null));
		final Commision commision3 = this.commisionRepository.save(new Commision(user3));

		User user4 = this.userService.save(
				new User(null, null, "2shouldReturnMatches@ExchangeRepository.test", "123457", UserRoles.STUDENT, 455));
		final Long user4Id = user4.getId();
		final Groups group4 = this.groupService.save(new Groups(123, "A2-3", null, 430, WeekDay.FRIDAY, null));
		final Commision commision4 = this.commisionRepository.save(new Commision(user4));

		final Assignment assignmentUser1 = this.assignmentService.save(new Assignment(group1, commision1));
		final Assignment assignmentUser2 = this.assignmentService.save(new Assignment(group2, commision2));
		final Assignment assignmentUser3 = this.assignmentService.save(new Assignment(group2, commision3));
		final Assignment assignmentUser4 = this.assignmentService.save(new Assignment(group4, commision4));

		this.assignmentService.callAcceptAlgorythm();

		this.exchangeService.save(new Exchange(assignmentUser1, group2));
		Thread.sleep(1000);
		this.exchangeService.save(new Exchange(assignmentUser2, group1));
		Thread.sleep(1000);
		this.exchangeService.save(new Exchange(assignmentUser3, group1));
		Thread.sleep(1000);
		this.exchangeService.save(new Exchange(assignmentUser4, group3));

		this.exchangeService.performExchange();

		user1 = this.userService.getById(user1Id).get();
		Thread.sleep(1000);
		user2 = this.userService.getById(user2Id).get();
		Thread.sleep(1000);
		user3 = this.userService.getById(user3Id).get();
		Thread.sleep(1000);
		user4 = this.userService.getById(user4Id).get();
		Thread.sleep(1000);

		final List<Long> listGroupsOfUser1 = user1.getStudentRegisteredGrups().stream().map(Groups::getId)
				.collect(Collectors.toList());
		final List<Long> listGroupsOfUser2 = user2.getStudentRegisteredGrups().stream().map(Groups::getId)
				.collect(Collectors.toList());
		final List<Long> listGroupsOfUser3 = user3.getStudentRegisteredGrups().stream().map(Groups::getId)
				.collect(Collectors.toList());
		final List<Long> listGroupsOfUser4 = user4.getStudentRegisteredGrups().stream().map(Groups::getId)
				.collect(Collectors.toList());

		assertTrue(listGroupsOfUser1.contains(group2.getId()));
		assertTrue(listGroupsOfUser2.contains(group1.getId()));
		assertTrue(listGroupsOfUser3.contains(group2.getId()));
		assertTrue(listGroupsOfUser4.contains(group4.getId()));
	}

	@Test
	@DirtiesContext(methodMode = MethodMode.BEFORE_METHOD)
	public void shouldRemoveOutDatedExchnages() throws Exception {
		User user1 = this.userService.save(
				new User(null, null, "1shouldReturnMatches@ExchangeRepository.test", "123454", UserRoles.STUDENT, 451));
		final Long user1Id = user1.getId();
		final Groups group1 = this.groupService.save(new Groups(123, "A2-3", null, 430, WeekDay.MONDAY, null));
		final Commision commision1 = this.commisionRepository.save(new Commision(user1));

		User user2 = this.userService.save(
				new User(null, null, "2shouldReturnMatches@ExchangeRepository.test", "123455", UserRoles.STUDENT, 452));
		final Long user2Id = user2.getId();
		final Groups group2 = this.groupService.save(new Groups(123, "A2-3", null, 430, WeekDay.THURSDAY, null));
		final Commision commision2 = this.commisionRepository.save(new Commision(user2));

		final Groups group3 = this.groupService.save(new Groups(123, "A2-3", null, 430, WeekDay.THURSDAY, null));
		final Groups group4 = this.groupService.save(new Groups(123, "A2-3", null, 430, WeekDay.THURSDAY, null));

		final Assignment assignmentUser1 = this.assignmentService.save(new Assignment(group1, commision1));
		final Assignment assignmentUser2 = this.assignmentService.save(new Assignment(group2, commision2));

		this.assignmentService.callAcceptAlgorythm();

		this.exchangeService.save(new Exchange(assignmentUser1, group2));
		Thread.sleep(1000);
		this.exchangeService.save(new Exchange(assignmentUser2, group1));
		Thread.sleep(1000);
		this.exchangeService.save(new Exchange(assignmentUser1, group3));
		Thread.sleep(1000);
		this.exchangeService.save(new Exchange(assignmentUser1, group4));
		Thread.sleep(1000);

		this.exchangeService.performExchange();

		user1 = this.userService.getById(user1Id).get();
		user2 = this.userService.getById(user2Id).get();

		final List<Long> listGroupsOfUser1 = user1.getStudentRegisteredGrups().stream().map(Groups::getId)
				.collect(Collectors.toList());
		final List<Long> listGroupsOfUser2 = user2.getStudentRegisteredGrups().stream().map(Groups::getId)
				.collect(Collectors.toList());

		assertTrue(listGroupsOfUser1.contains(group2.getId()));
		assertTrue(listGroupsOfUser2.contains(group1.getId()));
		assertTrue(this.exchangeService.getAllExchanges().size() == 2);
	}

    @Test
    @DirtiesContext(methodMode = MethodMode.BEFORE_METHOD)
    public void shouldSortExchanges() throws Exception{
	final List<MatchData> listMatrix = new ArrayList<>();
	final Exchange exchange1 = new Exchange(null, null);
	Thread.sleep(1000);
	final Exchange exchange2 = new Exchange(null, null);
	Thread.sleep(1000);
	final Exchange exchange3 = new Exchange(null, null);
	Thread.sleep(1000);
	final Exchange exchange4 = new Exchange(null, null);
	Thread.sleep(1000);

	listMatrix.add(new MatchData(exchange2, exchange4));
	listMatrix.add(new MatchData(exchange1, exchange3));

	final List<MatchData> matchDataListSorted = listMatrix.stream().sorted((m1, m2) -> -1 * m1.compare(m2)).collect(Collectors.toList());

	assertTrue(listMatrix.get(0).equals(matchDataListSorted.get(1)));
	assertTrue(listMatrix.get(1).equals(matchDataListSorted.get(0)));
	assertTrue(matchDataListSorted.size() == 2);
    }
}