using System;
using System.Collections;
using System.Collections.Generic;
using PixelCrushers;
using UnityEngine;
using UnityEngine.Events;

namespace Beyond
{
    public class KillTrigger : Saver
    {
        [SerializeField] EnemySpawner[] m_spawners;
        
        public UnityEvent<KillTrigger> OnTrigger;

        [Serializable]
        public class SaveData
        {
            public bool wasTriggered = false;
        }

        private SaveData m_data = new SaveData();
        void Start()
        {
            foreach (var s in m_spawners)
            {
                s.m_OnDead.AddListener(OnEnemyKilled);
            }
        }

        public void CheckSpawners()
        {
            if (m_data.wasTriggered)
                return;
            foreach (var spawner in m_spawners)
            {
                if (!spawner.SpawnedAndDead())
                    return;
            }
            OnTrigger?.Invoke(this);
            m_data.wasTriggered = true;
        }
        private void OnEnemyKilled(EnemySpawner arg0)
        {
            CheckSpawners();
        }

        private void OnDestroy()
        {
            foreach (var s in m_spawners)
            {
                s.m_OnDead.RemoveListener(OnEnemyKilled);
            }
        }

        public override string RecordData()
        {
            return SaveSystem.Serialize(m_data);
        }

        public override void ApplyData(string s)
        {
            var data = SaveSystem.Deserialize<SaveData>(s);
            if (data != null)
                m_data = data;
        }
    }
}