TournamentBean.java

package fi.codecrew.moya.beans;

import java.util.Date;
import java.util.List;

import javax.annotation.security.RolesAllowed;
import javax.ejb.EJB;
import javax.ejb.LocalBean;
import javax.ejb.Stateless;

import fi.codecrew.moya.enums.TournamentStatus;
import fi.codecrew.moya.enums.TournamentTeamMemberRole;
import fi.codecrew.moya.enums.apps.TournamentPermission;
import fi.codecrew.moya.facade.EventUserFacade;
import fi.codecrew.moya.facade.TournamentFacade;
import fi.codecrew.moya.facade.TournamentGameFacade;
import fi.codecrew.moya.facade.TournamentParticipantFacade;
import fi.codecrew.moya.facade.TournamentRuleFacade;
import fi.codecrew.moya.facade.TournamentTeamMemberFacade;
import fi.codecrew.moya.model.EventUser;
import fi.codecrew.moya.model.Tournament;
import fi.codecrew.moya.model.TournamentGame;
import fi.codecrew.moya.model.TournamentParticipant;
import fi.codecrew.moya.model.TournamentRule;
import fi.codecrew.moya.model.TournamentTeamMember;

/**
 * Session Bean implementation class TournamentBean
 */
@Stateless
@LocalBean
public class TournamentBean implements TournamentBeanLocal {

	@EJB
	private TournamentRuleFacade tournamentRuleFacade;
	@EJB
	private TournamentGameFacade tournamentGameFacade;
	@EJB
	private TournamentFacade tournamentFacade;
	@EJB
	private TournamentParticipantFacade tournamentParticipantFacade;
	@EJB
	private EventUserFacade eventUserFacade;
	@EJB
	private EventBean eventBean;
	@EJB
	private PermissionBean permissionBean;
	@EJB
	private TournamentTeamMemberFacade tournamentTeamMemberFacade;

	/**
	 * Default constructor.
	 */
	public TournamentBean() {
		// TODO Auto-generated constructor stub
	}

	@Override
	@RolesAllowed(TournamentPermission.S_VIEW)
	public List<TournamentRule> getRulesByGame(TournamentGame tg) {
		return tournamentRuleFacade.getRulesByGame(tg);
	}

	@Override
	@RolesAllowed(TournamentPermission.S_VIEW)
	public List<TournamentGame> getGames() {
		return tournamentGameFacade.getGames();
	}

	@Override
	@RolesAllowed(TournamentPermission.S_MANAGE_ALL)
	public TournamentGame createGame(TournamentGame tg) {
		return tournamentGameFacade.create(tg);
	}

	@Override
	@RolesAllowed(TournamentPermission.S_MANAGE_ALL)
	public TournamentRule createRule(TournamentRule tr) {
		return tournamentRuleFacade.create(tr);
	}

	@Override
	@RolesAllowed(TournamentPermission.S_VIEW)
	public TournamentGame findGame(Integer id) {
		return tournamentGameFacade.find(id);
	}

	@Override
	@RolesAllowed(TournamentPermission.S_VIEW)
	public TournamentRule findRule(Integer id) {
		return tournamentRuleFacade.find(id);
	}

	@Override
	@RolesAllowed(TournamentPermission.S_MANAGE_ALL)
	public void createTournament(Tournament tournament) throws Exception {
		// Assert correct event
		if (eventBean.getCurrentEvent().equals(tournament.getLanEvent()))
			tournamentFacade.create(tournament);
		else
			throw new Exception("tournament.invalid_event");
	}
	
	@Override
	@RolesAllowed(TournamentPermission.S_MANAGE_ALL)
	public void updateTournamentRules(TournamentRule tr) throws Exception {
		// Assert correct event
		if(eventBean.getCurrentEvent().equals(tr.getTournamentGame().getLanEvent())) {
			tournamentRuleFacade.merge(tr);
		} else {
			throw new Exception("tournament.invalid_event");
		}
	}

	@Override
	@RolesAllowed(TournamentPermission.S_VIEW)
	public List<Tournament> getTournamentsInStatus(TournamentStatus status, boolean useTimeConstraints, boolean invertMatch) {
		if(useTimeConstraints)
			if(!invertMatch)
				return tournamentFacade.getTournamentsInStatusWithParticipationTimeIn(status, eventBean.getCurrentEvent());
			else
				return tournamentFacade.getTournamentsInStatusWithParticipationTimeNotIn(status, eventBean.getCurrentEvent());
		else
			return tournamentFacade.getTournamentsInStatus(status, eventBean.getCurrentEvent());
	}

	@Override
	@RolesAllowed(TournamentPermission.S_VIEW)
	public List<Tournament> getActiveTournaments() {
		return tournamentFacade.getTournamentsNotInStatus(TournamentStatus.COMPLETED, eventBean.getCurrentEvent());
	}

	@Override
	@RolesAllowed(TournamentPermission.S_VIEW)
	public Tournament getTournamentById(Integer tournamentId) {
		return tournamentFacade.find(tournamentId);
	}

	@Override
	@RolesAllowed(TournamentPermission.S_MANAGE_ALL)
	public void editTournament(Tournament tournament) {
		tournamentFacade.merge(tournament);
	}

	@Override
	@RolesAllowed(TournamentPermission.S_MANAGE_ALL)
	public void deleteTournament(Tournament tournament) {
		tournament = tournamentFacade.merge(tournament);
		tournamentFacade.remove(tournament);
	}

	@Override
	@RolesAllowed(TournamentPermission.S_PARTICIPATE)
	public void createParticipation(TournamentParticipant tournamentParticipant) throws Exception {
		Tournament t = tournamentFacade.find(tournamentParticipant.getTournament().getId());

		Date currentTime = new Date();

		// Assert registration time is correct
		if (t.getRegistrationOpensAt() != null && t.getRegistrationClosesAt() != null && currentTime.after(t.getRegistrationOpensAt()) && currentTime.before(t.getRegistrationClosesAt())) {
			// Assert participant size is smaller than max
			if (t.getParticipants().size() < t.getMaxParticipants()) {
				TournamentTeamMember capt = null;
				for (TournamentTeamMember ttm : tournamentParticipant.getTeamMembers())
					if (ttm.getRole() == TournamentTeamMemberRole.CAPTAIN)
						capt = ttm;

				// Assert team has a captain
				if (capt != null) {

					// Assert team has the correct number of players for a match
					if (tournamentParticipant.getTeamMembers().size() >= tournamentParticipant.getTournament().getPlayersPerMatch()) {
						tournamentParticipant = tournamentParticipantFacade.create(tournamentParticipant);
						t.getParticipants().add(tournamentParticipant);
					} else {
						throw new Exception("tournament.not_enough_players");
					}
				} else {
					throw new Exception("tournament.no_captain");
				}
			} else {
				throw new Exception("tournament.participation_full");
			}
		} else {
			throw new Exception("tournament.not_within_participation_time");
		}
	}

	@Override
	@RolesAllowed(TournamentPermission.S_VIEW)
	public boolean hasParticipations(EventUser currentUser, Tournament tournament) {
		for (TournamentParticipant tp : tournament.getParticipants()) {
			for (TournamentTeamMember tm : tp.getTeamMembers()) {
				EventUser eu = tm.getEventUser();

				if (eu.equals(currentUser)) {
					return true;
				}
			}
		}

		return false;
	}

	@Override
	@RolesAllowed(TournamentPermission.S_VIEW)
	public List<TournamentParticipant> findOwnParticipations() {
		EventUser currentUser = permissionBean.getCurrentUser();
		
		return tournamentParticipantFacade.findByParticipator(currentUser);
	}
	
	@Override
	@RolesAllowed(TournamentPermission.S_VIEW)
	public EventUser findAvailablePlayerForTournamentByLogin(Tournament t, String login) throws Exception {

		EventUser u = eventUserFacade.findByLogin(login.toLowerCase().trim());
		if (u != null) {
			if (!hasParticipations(u, t))
				return u;
			else
				throw new Exception("tournaments.participation_already_exists");
		} else {
			throw new Exception("tournaments.participated_user_not_found");
		}
	}

	@Override
	@RolesAllowed(TournamentPermission.S_REMOVE_OWN_PARTICIPATION)
	public void deleteParticipationById(Integer tpid) throws Exception {
		TournamentParticipant tp = tournamentParticipantFacade.find(tpid);
		EventUser executor = permissionBean.getCurrentUser();
		
		// Assert we have permission to remove participant
		// TODO: this will include check for remove any participation too!
		if(!permissionBean.hasPermission(TournamentPermission.REMOVE_OWN_PARTICIPATION) || !tp.getParticipator().equals(executor)) {
			throw new Exception("tournaments.can_only_remove_own_participations");
		}
		
		// Assert that tournament has not closed participation
		// TODO: admin exception!
		if(!tp.getTournament().getRegistrationClosesAt().after(new Date())) {
			throw new Exception("tournaments.cannot_remove_participation_from_closed_tournament");
		}
		
		// All ok, do nukage
		for(TournamentTeamMember ttm : tp.getTeamMembers()) {
			tournamentTeamMemberFacade.remove(ttm);
		}
		
		// Let's not leave anything in cache :)
		tp.getTournament().getParticipants().remove(tp);
		
		tournamentParticipantFacade.remove(tp);
	}
}