using System;
using Cielonos.MainGame;
using SLSUtilities.UI;
using TMPro;
using UnityEngine;
using DG.Tweening;

namespace Cielonos.MainGame.UI
{
    public class PassionSystemUIArea : UIElementBase
    {
        [Header("UI References")]
        public TMP_Text levelText;
        public TMP_Text percentageText;

        private PassionSystem _passionSystem;

        // 缓存原始位置以解决高频动画重合重叠时的坐标偏移累积问题
        private Vector3 _levelTextOrigPos;
        private Vector3 _percentTextOrigPos;

        private void Start()
        {
            // 获取单例系统，确保如果未找到直接抛出异常
            _passionSystem = CombatManager.GetCombatSystem<PassionSystem>();
            
            _passionSystem.OnLevelChanged += OnLevelChanged;
            _passionSystem.OnPercentChanged += OnPercentChanged;
            _passionSystem.OnPassionIncreased += OnPassionIncreased;
            _passionSystem.OnPassionDecreased += OnPassionDecreased;

            // 缓存初始相对坐标
            _levelTextOrigPos = levelText.transform.localPosition;
            _percentTextOrigPos = percentageText.transform.localPosition;

            // 设定初始显示
            UpdateDisplay(_passionSystem.levelIndex, _passionSystem.percent);
        }

        private void OnDestroy()
        {
            if (_passionSystem != null)
            {
                _passionSystem.OnLevelChanged -= OnLevelChanged;
                _passionSystem.OnPercentChanged -= OnPercentChanged;
                _passionSystem.OnPassionIncreased -= OnPassionIncreased;
                _passionSystem.OnPassionDecreased -= OnPassionDecreased;
            }
        }

        private void OnLevelChanged(int oldLevel, int newLevel)
        {
            UpdateDisplay(newLevel, _passionSystem.percent);

            if (newLevel > oldLevel)
            {
                PlayLevelUpAnimation();
            }
            else if (newLevel < oldLevel)
            {
                PlayLevelDownAnimation();
            }
        }

        private void OnPercentChanged(float percent)
        {
            UpdateDisplay(_passionSystem.levelIndex, percent);
        }

        private void OnPassionIncreased(float amount, bool applyMultipliers)
        {
            PlayPercentIncreaseAnimation();
        }

        private void OnPassionDecreased(float amount, bool applyMultipliers)
        {
            // 只有当受击等 reactive 负面反应触发减少时才播放受击抖动
            if (applyMultipliers)
            {
                PlayPercentDecreaseAnimation();
            }
        }

        private void UpdateDisplay(int currentLevel, float currentPercent)
        {
            var levelInfo = _passionSystem.passionLevels[currentLevel];

            // 更新文本与颜色，无防御性 Null 校验以保证能抛出显式异常
            levelText.text = levelInfo.levelType.ToString();
            levelText.color = levelInfo.levelColor;

            percentageText.text = $"{Mathf.FloorToInt(currentPercent)}%";
            percentageText.color = levelInfo.levelColor;
        }

        // ==========================================
        // DOTween 动画及重叠冲突重置逻辑
        // ==========================================

        private void PlayLevelUpAnimation()
        {
            // 杀死该 Transform 上的全部活动动画，并立即恢复初值状态，彻底解决高频触发下的形变累积问题
            levelText.transform.DOKill();
            levelText.transform.localScale = Vector3.one;
            levelText.transform.localPosition = _levelTextOrigPos;

            // 升级：弹性膨胀反馈，显式调用 .Play() 以确保播放
            levelText.transform.DOPunchScale(new Vector3(0.5f, 0.5f, 0f), 0.45f, 10, 1f).Play();
        }

        private void PlayLevelDownAnimation()
        {
            levelText.transform.DOKill();
            levelText.transform.localScale = Vector3.one;
            levelText.transform.localPosition = _levelTextOrigPos;

            // 降级：左右剧烈晃动，以及缩水回弹，显式调用 .Play()
            levelText.transform.DOShakePosition(0.4f, new Vector3(10f, 0f, 0f), 20, 90f).Play();
            levelText.transform.DOPunchScale(new Vector3(-0.25f, -0.25f, 0f), 0.35f, 5, 0.5f).Play();
        }

        private void PlayPercentIncreaseAnimation()
        {
            percentageText.transform.DOKill();
            percentageText.transform.localScale = Vector3.one;
            percentageText.transform.localPosition = _percentTextOrigPos;

            // 增加百分比：轻微向上跳动和快速缩放弹跳，显式调用 .Play()
            percentageText.transform.DOPunchScale(new Vector3(0.18f, 0.18f, 0f), 0.15f, 6, 0.5f).Play();
        }

        private void PlayPercentDecreaseAnimation()
        {
            percentageText.transform.DOKill();
            percentageText.transform.localScale = Vector3.one;
            percentageText.transform.localPosition = _percentTextOrigPos;

            // 受击损失百分比：上下震颤摇晃，以及明显的凹陷缩水，显式调用 .Play()
            percentageText.transform.DOShakePosition(0.35f, new Vector3(6f, 4f, 0f), 22).Play();
            percentageText.transform.DOPunchScale(new Vector3(-0.2f, -0.2f, 0f), 0.25f, 5, 0.5f).Play();
        }
    }
}