using GeometryTD.Entity;
using GeometryTD.Entity.EntityData;
using GameFramework.Event;
using GeometryTD;
using UnityEngine;
using UnityGameFramework.Runtime;

namespace GeometryTD.CustomComponent
{
    public class EnemyManagerComponent : GameFrameworkComponent
    {
        private EntityComponent _entity;

        private float _spawnEnemyInterval = 5f;
        private float _spawnEnemyTimer;
        private float _spawnEnemyAccelerate = 0.5f;
        private int _spawnEnemyCount = 5;
        private int _spawnEnemyMaxCount = 5000;
        private int _currentEnemyCount;
        private int _spawnDistanceFromPlayer = 10;
        private int _currentSpawnEnemyId = 0;

        private Transform _player;

        public void OnInit()
        {
            _entity = GameEntry.Entity;
            
            GameEntry.Event.Subscribe(ShowEntitySuccessEventArgs.EventId, OnShowEntitySuccess);
            GameEntry.Event.Subscribe(ShowEntityFailureEventArgs.EventId, OnShowEntityFailure);
            GameEntry.Event.Subscribe(HideEntityCompleteEventArgs.EventId, OnHideEntityComplete);
        }

        public void OnUpdate(float elapseSeconds, float realElapseSeconds)
        {
            _spawnEnemyTimer += elapseSeconds;
            if (_spawnEnemyTimer < _spawnEnemyInterval) return;
            SpawnEnemy();
            _spawnEnemyTimer = 0;
            _spawnEnemyInterval = Mathf.Max(0.1f, _spawnEnemyInterval - _spawnEnemyAccelerate);
        }

        public void OnDestroy()
        {
            GameEntry.Event.Unsubscribe(ShowEntitySuccessEventArgs.EventId, OnShowEntitySuccess);
            GameEntry.Event.Unsubscribe(ShowEntityFailureEventArgs.EventId, OnShowEntityFailure);
            GameEntry.Event.Unsubscribe(HideEntityCompleteEventArgs.EventId, OnHideEntityComplete);
        }

        private void SpawnEnemy()
        {
            if (_player == null) return;
            for (int i = 0; i < _spawnEnemyCount; i++)
            {
                if (_currentEnemyCount >= _spawnEnemyMaxCount) break;
                _entity.ShowEnemy(new EnemyData(_currentSpawnEnemyId % _spawnEnemyMaxCount, 1001, _player,
                    GetRandomPosition(), 10, 2));
                _currentSpawnEnemyId++;
            }
        }

        private Vector3 GetRandomPosition()
        {
            float x = Random.Range(-1f, 1f);
            float z = Random.Range(-1f, 1f);
            Vector3 dir = new Vector3(x, 0, z).normalized;
            return _player.position + dir * _spawnDistanceFromPlayer;
        }

        private void OnShowEntitySuccess(object sender, GameEventArgs e)
        {
            if (e is ShowEntitySuccessEventArgs ne)
            {
                if (ne.EntityLogicType == typeof(Enemy))
                {
                    _currentEnemyCount++;
                }

                if (ne.EntityLogicType == typeof(Player))
                {
                    _player = ne.Entity.transform;
                }
            }
        }

        private void OnShowEntityFailure(object sender, GameEventArgs e)
        {
        }

        private void OnHideEntityComplete(object sender, GameEventArgs e)
        {
            if (e is HideEntityCompleteEventArgs ne)
            {
                if (ne.EntityGroup.Name == "Enemy")
                {
                    _currentEnemyCount--;
                }
            }
        }
    }
}