using UnityEngine;
using Colosseum.Player;
using Colosseum.Skills;

namespace Colosseum.UI
{
    /// <summary>
    /// 스킬 퀵슬롯 UI 관리자.
    /// PlayerSkillInput과 연동하여 쿨타임, 마나 등을 표시합니다.
    /// </summary>
    public class SkillQuickSlotUI : MonoBehaviour
    {
        [Header("Skill Slots")]
        [Tooltip("6개의 스킬 슬롯 UI (인덱스 순서대로)")]
        [SerializeField] private SkillSlotUI[] skillSlots = new SkillSlotUI[6];

        [Header("Debug")]
        [SerializeField] private bool debugMode = false;

        [Header("Keybind Labels")]
        [Tooltip("키바인딩 표시 텍스트 (기본: Q, W, E, R, A, S)")]
        [SerializeField] private string[] keyLabels = { "Q", "W", "E", "R", "A", "S" };

        private PlayerSkillInput playerSkillInput;
        private PlayerNetworkController networkController;

        private void Start()
        {
            // 로컬 플레이어 찾기
            FindLocalPlayer();
        }

        private void FindLocalPlayer()
        {
            var players = FindObjectsByType<PlayerSkillInput>(FindObjectsSortMode.None);

            if (players.Length == 0)
            {
                Debug.LogWarning("[SkillQuickSlotUI] No PlayerSkillInput found in scene");
                return;
            }

            foreach (var player in players)
            {
                if (player.IsOwner)
                {
                    playerSkillInput = player;
                    networkController = player.GetComponent<PlayerNetworkController>();
                    Debug.Log($"[SkillQuickSlotUI] Found local player: {player.name}");
                    InitializeSlots();
                    return;
                }
            }

            Debug.LogWarning("[SkillQuickSlotUI] No local player found (IsOwner = false)");
        }

        private void InitializeSlots()
        {
            if (playerSkillInput == null) return;

            int initializedCount = 0;
            for (int i = 0; i < skillSlots.Length && i < keyLabels.Length; i++)
            {
                SkillData skill = playerSkillInput.GetSkill(i);
                string keyLabel = i < keyLabels.Length ? keyLabels[i] : (i + 1).ToString();

                if (skillSlots[i] != null)
                {
                    skillSlots[i].Initialize(i, skill, keyLabel);
                    if (skill != null) initializedCount++;
                }
                else
                {
                    Debug.LogWarning($"[SkillQuickSlotUI] Slot {i} is not assigned");
                }
            }

            Debug.Log($"[SkillQuickSlotUI] Initialized {initializedCount} skill slots");
        }

        private void Update()
        {
            if (playerSkillInput == null)
            {
                // 플레이어가 아직 없으면 다시 찾기 시도
                FindLocalPlayer();
                return;
            }

            UpdateSlotStates();
        }

        private float debugLogTimer = 0f;

        private void UpdateSlotStates()
        {
            bool shouldLog = debugMode && Time.time > debugLogTimer;
            if (shouldLog) debugLogTimer = Time.time + 1f;

            for (int i = 0; i < skillSlots.Length; i++)
            {
                if (skillSlots[i] == null) continue;

                SkillData skill = playerSkillInput.GetSkill(i);
                if (skill == null) continue;

                float remainingCooldown = playerSkillInput.GetRemainingCooldown(i);
                float totalCooldown = skill.Cooldown;
                bool hasEnoughMana = networkController == null || networkController.Mana >= skill.ManaCost;

                if (shouldLog && remainingCooldown > 0f)
                {
                    Debug.Log($"[SkillQuickSlotUI] Slot {i}: {skill.SkillName}, CD: {remainingCooldown:F1}/{totalCooldown:F1}");
                }

                skillSlots[i].UpdateState(remainingCooldown, totalCooldown, hasEnoughMana);
            }
        }

        /// <summary>
        /// 플레이어 참조 수동 설정 (씬 전환 등에서 사용)
        /// </summary>
        public void SetPlayer(PlayerSkillInput player)
        {
            playerSkillInput = player;
            networkController = player?.GetComponent<PlayerNetworkController>();
            InitializeSlots();
        }

        /// <summary>
        /// 특정 슬롯의 스킬 변경
        /// </summary>
        public void UpdateSkillSlot(int slotIndex, SkillData skill)
        {
            if (slotIndex < 0 || slotIndex >= skillSlots.Length) return;

            string keyLabel = slotIndex < keyLabels.Length ? keyLabels[slotIndex] : (slotIndex + 1).ToString();
            skillSlots[slotIndex].Initialize(slotIndex, skill, keyLabel);
        }
    }
}