using System;
using System.Collections.Generic;
using UnityEngine;

namespace BlueWater.Enemies.Bosses
{
    public class BossSkillController : MonoBehaviour
    {
        // Variables
        #region Variables
        
        // Components
        [SerializeField]
        private List<BaseSkill> _skillList;
        private Dictionary<string, BaseSkill> _instantiateSkillDictionary;
        
        // Variables
        public bool IsSkillActive { get; private set; }
        
        // Events
        public event Action OnStartSkill;
        public event Action OnEndSkill;
        
        #endregion

        // Unity methods
        #region Unity methods

        private void OnDestroy()
        {
            if (_instantiateSkillDictionary == null) return;
            
            foreach (var element in _instantiateSkillDictionary.Values)
            {
                if (element && element.gameObject)
                {
                    Destroy(element.gameObject);
                }
            }
        }

        #endregion

        // Initialize methods
        #region Initialize methods
        
        public void Initialize(List<BaseSkill> skillList)
        {
            _skillList = skillList;
            _instantiateSkillDictionary = new Dictionary<string, BaseSkill>(_skillList.Count);

            for (var i = 0; i < _skillList.Count; i++)
            {
                var instantiateSkill = Instantiate(_skillList[i]);
                instantiateSkill.Initialize(gameObject);
                _instantiateSkillDictionary.Add(instantiateSkill.SkillName, instantiateSkill);
            }
        }
        
        #endregion

        // Methods
        #region Methods
        
        // Events methods
        /// <summary>
        /// 사용하기 전에 CanSkill() 함수를 통해서 사용이 가능한 스킬인지 먼저 체크해야 합니다.
        /// </summary>
        /// <param name="skillName"></param>
        public void ActivateSkill(string skillName)
        {
            if (!_instantiateSkillDictionary.TryGetValue(skillName, out var skill))
            {
                Debug.Log($"{skillName}(이)라는 스킬을 찾을 수 없습니다.");
                return;
            }

            OnStartSkill?.Invoke();
            IsSkillActive = true;
            skill.ActivateSkill(EndSkill);
        }
        
        // Methods
        public bool CanSkill(string skillName)
        {
            if (!_instantiateSkillDictionary.TryGetValue(skillName, out var skill))
            {
                Debug.Log($"{skillName}(이)라는 스킬을 찾을 수 없습니다.");
                return false;
            }
            
            if (IsSkillActive) return false;

            return skill.CanSkill();
        }

        private void EndSkill()
        {
            OnEndSkill?.Invoke();
            IsSkillActive = false;
        }

        public void StopAllCoroutine()
        {
            foreach (var element in _instantiateSkillDictionary.Values)
            {
                element.StopAllCoroutines();
            }
        }
        
        #endregion
    }
}