using System;
using System.Collections.Generic;
using System.Linq;
using Code.Example.Race.Racer.Player;
using Code.Example.Race.Track;
using Code.Infrastructure.EventBus;
using Reflex.Attributes;

namespace Code.Example.Race
{
    public class RaceScores : IRacerPassedCheckpointHandler, IDisposable, IPlayerPassedCheckpointHandler
    {
        private Dictionary<Racer.Racer, ScoreData> _scores = new();
        private EventBus _eventBus;

        public RaceScores(EventBus eventBus)
        {
            _eventBus = eventBus;
            _eventBus.Subscribe(this);
        }

        public void SubscribeRacer(Racer.Racer racer)
        {
            _scores.Add(racer, new ScoreData());
        }

        public void ChangeScore(Racer.Racer racer, int additionalScore)
        {
            _scores[racer].checkpointsPassed += additionalScore;
            _eventBus.RaiseEvent<IScoreChangedHandle>(x=> x.ScoreChanged(racer,_scores[racer], GetScores()));
        }

        public void LapPassed(Racer.Racer racer)
        {
            _scores[racer].lapsPassed++;
            _eventBus.RaiseEvent<IScoreChangedHandle>(x=> x.ScoreChanged(racer,_scores[racer], GetScores()));
            if (_scores[racer].lapsPassed >= _raceTrackData.trackData.LapCount) 
                _eventBus.RaiseEvent<IRaceGameHandle>(x=> x.RaceGameEnded(this));
        }

        public void UnsubscribeRacer(Racer.Racer racer)
        {
            _scores.Remove(racer);
        }

        public List<KeyValuePair<Racer.Racer, ScoreData>> GetScores()
        {
            return _scores.OrderByDescending(x => x.Value.checkpointsPassed).ToList();
        }

        public void OnRacerPassedCheckpoint(Racer.Racer racer) => ChangeScore(racer,1);

        public void Dispose()
        {
            _eventBus.Unsubscribe(this);
        }

        [Inject] private RaceTrackData _raceTrackData;

        public void OnPlayerPassedCheckpoint(Racer.Racer racer)
        {
            var player = (PlayerRacer)racer;
            _raceTrackData.trackData.Checkpoints[player.CurrentWaypointIndex].Show();
        }
 
        public void OnPlayerLapPassed(Racer.Racer racer)
        {
        }
    }

    public class ScoreData
    {
        public int checkpointsPassed;
        public int lapsPassed;
    }
    public interface IScoreChangedHandle : IGlobalSubscriber
    {
        void ScoreChanged(Racer.Racer racer, ScoreData score, List<KeyValuePair<Racer.Racer, ScoreData>> scores);
    }
}