package hdm.mi.sthbackend.service;

import com.mongodb.client.MongoClient;
import hdm.mi.sthbackend.exeptions.PlayerIdNotFoundException;
import hdm.mi.sthbackend.exeptions.TeamIdNotFoundException;
import hdm.mi.sthbackend.exeptions.TournamentIdNotFoundException;
import hdm.mi.sthbackend.model.Player;
import hdm.mi.sthbackend.model.Team;
import hdm.mi.sthbackend.model.Tournament;
import hdm.mi.sthbackend.repository.ITournamentRepository;
import hdm.mi.sthbackend.repository.MongoManager;
import lombok.AllArgsConstructor;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Optional;
import java.util.UUID;

@Service
@AllArgsConstructor
public class TournamentService {

    ITournamentRepository tournamentRepository;

    public Player addPlayerToTeam(UUID tournamentId,
                                  UUID teamId,
                                  String playerName) throws TournamentIdNotFoundException {
        Tournament tournament = tournamentRepository.findById(tournamentId)
                .orElseThrow(() -> new TournamentIdNotFoundException(tournamentId));
        Player newPlayer = new Player(UUID.randomUUID(), playerName);
        tournament
                .getTeams()
                .get(teamId)
                .getTeamMembers()
                .put(newPlayer.getPlayerId(), newPlayer);
        tournamentRepository.save(tournament);
        return newPlayer;
    }

    public Player removePlayerFromTeam(UUID tournamentId,
                                       UUID teamId,
                                       UUID playerId) throws TournamentIdNotFoundException {
        Tournament tournament = tournamentRepository.findById(tournamentId)
                .orElseThrow(() -> new TournamentIdNotFoundException(tournamentId));

        Player removedPlayer = tournament.getTeams()
                .get(teamId)
                .getTeamMembers()
                .remove(playerId);

        tournamentRepository.save(tournament);
        return removedPlayer;
    }

    public UUID updatePlayerName(UUID tournamentId,
                                 UUID teamId,
                                 UUID playerId,
                                 String newPlayerName) throws TournamentIdNotFoundException, PlayerIdNotFoundException {
        Tournament tournament = tournamentRepository.findById(tournamentId)
                .orElseThrow(() -> new TournamentIdNotFoundException(tournamentId));

        tournament.getTeams()
                .get(teamId)
                .getTeamMembers()
                .get(playerId)
                .setName(newPlayerName);

        tournamentRepository.save(tournament);
        return playerId;
    }

    public Team createTeam(UUID tournamentId, String teamName) throws TournamentIdNotFoundException {
        Tournament tournament = tournamentRepository.findById(tournamentId)
                .orElseThrow(() -> new TournamentIdNotFoundException(tournamentId));

        Team team = new Team(UUID.randomUUID(), teamName, new HashMap<>() {
        });

        tournament.getTeams()
                .put(team.getId(), team);

        tournamentRepository.save(tournament);
        return team;
    }

    public UUID removeTeamFromTournament(UUID tournamentId,
                                         UUID teamId) throws TournamentIdNotFoundException, TeamIdNotFoundException {
        Tournament tournament = tournamentRepository.findById(tournamentId)
                .orElseThrow(() -> new TournamentIdNotFoundException(tournamentId));

        Optional.ofNullable(tournament.getTeams()
                        .remove(teamId))
                .orElseThrow(() -> new TeamIdNotFoundException(tournamentId));
        tournamentRepository.save(tournament);
        return teamId;
    }

    public Tournament createTournament(String tournamentName) {
        MongoManager manager = new MongoManager();
        MongoClient client = manager.getMongoClient();
        manager.getTestCollection(client);

        Tournament tournament = new Tournament(UUID.randomUUID(), tournamentName, new ArrayList<>(), new HashMap<>());
        tournamentRepository.insert(tournament);
        return tournament;
    }


}