using Fort23.Core;
using TMPro;
using UnityEngine;
using UnityEngine.UI;

namespace Fort23.Mono
{
    /// <summary>
    /// 数字变化
    /// </summary>
    public class AnimateNumber
    {
        private Text targetTxt;
        private TextMeshProUGUI targetTextPro;
        private long startValue;
        private long endValue;
        private float time;
        private float timeElapsed;
        
        public AnimateNumber(Text targetTxt = null, TextMeshProUGUI targetTextPro = null)
        {
            this.targetTxt = targetTxt;
            this.targetTextPro = targetTextPro;
        }
        
        public void Start(long startValue, long endValue, float time = 0.3f)
        {
            this.startValue = startValue;
            this.endValue = endValue;
            this.time = time;
            
            timeElapsed = 0f; // 已经过的时间
            StaticUpdater.Instance.RemoveRenderUpdateCallBack(Animate);
            StaticUpdater.Instance.AddRenderUpdateCallBack(Animate);
        }

        public async void Reset()
        {
            StaticUpdater.Instance.RemoveRenderUpdateCallBack(Animate);
            await TimerComponent.Instance.WaitAsync(1);
        }
        
        private void Animate()
        {
            if (timeElapsed < time)
            {
                // 计算当前数字（插值）
                float currentValue = Mathf.Lerp(startValue, endValue, timeElapsed / time);
                // 将当前数字四舍五入并设置到目标文本
                SetText(Mathf.RoundToInt(currentValue).ToString());
        
                timeElapsed += Time.deltaTime; // 增加经过的时间
            }
            else
            {
                // 确保最终值精确设置
                SetText(endValue.ToString());
                StaticUpdater.Instance.RemoveRenderUpdateCallBack(Animate);
            }
        }

        private void SetText(string text)
        {
            if (targetTxt != null)
            {
                targetTxt.text = text;
            }

            if (targetTextPro != null)
            {
                targetTextPro.text = text;
            }
        }
    }
}