using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System;
using Cysharp.Threading.Tasks;
using DG.Tweening;

public class DamageContent : MonoBehaviour, IBattleFloatingUI
{
    public GameObject line;
    public RectTransform parent;

    [Header("Floating Config")]
    [Tooltip("请在Inspector中拖拽FloatingConfig资源")]
    public FloatingConfig floatingConfig;

    protected List<DamageLine> damageLineList = new List<DamageLine>();
    private BattleDmgInfo battleDmgInfo;
    private BattleFloatingUIController controller;

    #region Unity Lifecycle

    void Awake()
    {
        line.SetActive(false);
    }

    #endregion

    #region Controller Management

    private void InitController()
    {
        if (controller != null) return;

        if (floatingConfig == null)
        {
            Debug.LogError($"[DamageContent] FloatingConfig 未配置，请在Inspector中拖拽赋值! GameObject: {gameObject.name}");
            return;
        }

        RectTransform rectTransform = GetComponent<RectTransform>();
        controller = new BattleFloatingUIController(rectTransform, gameObject, ApplyColor, floatingConfig);
    }

    public void SetRatio(float speed, float scale)
    {
        InitController();
        controller?.SetRatio(speed, scale);
    }

    public void SetFloatingConfig(FloatingConfig config)
    {
        floatingConfig = config;
        if (controller != null)
        {
            controller.SetConfig(config);
        }
    }

    #endregion

    #region Position Management

    /// <summary>
    /// 设置飘字的起点和终点位置（运行时动态设置）
    /// </summary>
    public void SetPosition(Vector2 beginPos, Vector2 endPos)
    {
        InitController();
        controller?.SetRuntimePosition(beginPos, endPos);
    }

    #endregion

    #region Damage Display

    public void SetDamage(BattleDmgInfo _battleDmgInfo, List<BattleDmg> damages, Action _onComplete)
    {
        battleDmgInfo = _battleDmgInfo;
        
        EnsureDamageLineCapacity(damages.Count);
        DisplayDamageLines(damages);
        HideExcessDamageLines(damages.Count);
        
        bool isCrit = battleDmgInfo.IsCrit();
        Play(isCrit, _onComplete);
    }

    /// <summary>
    /// 确保有足够的DamageLine对象
    /// </summary>
    private void EnsureDamageLineCapacity(int requiredCount)
    {
        RectTransform lineTemplate = line.GetComponent<RectTransform>();
        Vector2 templateAnchorMin = lineTemplate.anchorMin;
        Vector2 templateAnchorMax = lineTemplate.anchorMax;
        Vector2 templatePivot = lineTemplate.pivot;
        
        for (int i = damageLineList.Count; i < requiredCount; i++)
        {
            GameObject newLine = GameObject.Instantiate(line, parent);
            DamageLine damageLine = newLine.GetComponent<DamageLine>();
            
            RectTransform newLineRect = newLine.GetComponent<RectTransform>();
            if (newLineRect != null)
            {
                newLineRect.anchorMin = templateAnchorMin;
                newLineRect.anchorMax = templateAnchorMax;
                newLineRect.pivot = templatePivot;
                newLineRect.anchoredPosition = Vector2.zero;
                newLineRect.localScale = Vector3.one;
            }
            
            damageLineList.Add(damageLine);
        }
    }

    /// <summary>
    /// 显示伤害行并设置位置
    /// </summary>
    private void DisplayDamageLines(List<BattleDmg> damages)
    {
        for (int i = 0; i < damages.Count; i++)
        {
            DamageLine damageLine = damageLineList[i];
            SetDamageLinePosition(damageLine, i);
            damageLine.SetActive(true);
            damageLine.SetDamage(damages[i]);
        }
    }

    /// <summary>
    /// 设置单个伤害行的位置（使用Y轴偏移）
    /// </summary>
    private void SetDamageLinePosition(DamageLine damageLine, int index)
    {
        RectTransform lineRect = damageLine.GetComponent<RectTransform>();
        if (lineRect == null) return;

        RectTransform lineTemplate = line.GetComponent<RectTransform>();
        Vector2 basePos = lineTemplate.anchoredPosition;
        
        Vector2 pos = basePos;
        pos.y += 60f * index;
        lineRect.anchoredPosition = pos;
    }

    /// <summary>
    /// 隐藏多余的伤害行
    /// </summary>
    private void HideExcessDamageLines(int displayCount)
    {
        for (int i = displayCount; i < damageLineList.Count; i++)
        {
            damageLineList[i].SetActive(false);
        }
    }

    #endregion

    #region Animation Control

    public void Play(bool isCrit, Action onComplete = null)
    {
        InitController();
        controller?.Play(isCrit, onComplete);
    }

    public void Run()
    {
        if (controller == null) return;
        controller.Run();
    }

    public void Stop()
    {
        if (controller == null) return;
        controller.Stop();
    }

    public void Resume()
    {
        if (controller == null) return;
        controller.Resume();
    }

    #endregion

    #region Visual Effects

    private void ApplyColor(Color color)
    {
        for (int i = 0; i < damageLineList.Count; i++)
        {
            if (damageLineList[i].gameObject.activeSelf)
            {
                damageLineList[i].SetColor(color);
            }
        }
    }

    #endregion
}