using DG.Tweening;
using UnityEngine;
using UnityEngine.UI;

//动画扩展类
public static class AnimExtension
{
    //数字格式化
    private static string Format(double num, string format = "f1", bool symbol = false, string unit = "")
    {
        if (num > 0 && symbol)
        {
            return "+" + num.ToString(format) + unit;
        }
        else
        {
            return num.ToString(format) + unit;
        }
    }

    /// <summary>
    /// 文本动画
    /// </summary>
    /// <param name="text">文本组件</param>
    /// <param name="num">目标数值</param>
    /// <param name="format">显示格式</param>
    /// <param name="duration">持续时间</param>
    /// <param name="delay">延迟时间</param>
    /// <param name="symbol">正数前是否显示"+"号</param>
    public static Tweener DOTextAnim(this Text text, double num, float duration = 1f, string format = "f1", float delay = 0f, string unit = "", bool symbol = false)
    {
        if (text == null) return null;
        double data = 0;
        text.text = Format(data, format, symbol, unit);
        return DOTween.To(() => data, (x) => { data = x; text.text = Format(data, format, symbol, unit); }, num, duration).SetDelay(delay);
    }

    /// <summary>
    /// 文本动画
    /// </summary>
    /// <param name="text">文本组件</param>
    /// <param name="fromNum">起始数值</param>
    /// <param name="toNum">目标数值</param>
    /// <param name="duration">持续时间</param>
    /// <param name="format">显示格式</param>
    /// <param name="delay">延迟事件</param>
    /// <param name="unit">单位</param>
    /// <param name="symbol">是否显示"+"号</param>
    public static Tweener DOTextAnim(this Text text, double fromNum, double toNum, float duration = 1f, string format = "f1", float delay = 0f, string unit = "", bool symbol = false)
    {
        if (text == null) return null;
        double data = fromNum;
        text.text = Format(data, format, symbol);
        return DOTween.To(() => data, (x) => { data = x; text.text = Format(data, format, symbol); }, toNum, duration).SetDelay(delay);
    }

    /// <summary>
    /// Slider 动画
    /// </summary>
    /// <param name="slider">Slider 组件</param>
    /// <param name="num">目标数值</param>
    /// <param name="duration">持续时间</param>
    /// <param name="delay">延迟时间</param>
    public static Tweener DOSliderAnim(this Slider slider, float num, float duration = 1f, float delay = 0f)
    {
        if (slider == null) return null;
        slider.value = 0;
        return DOTween.To(() => slider.value, (x) => slider.value = x, num, duration).SetDelay(delay);
    }

    /// <summary>
    /// Image 的 fillAmount 动画
    /// </summary>
    /// <param name="image">Image组件</param>
    /// <param name="num">目标数值</param>
    /// <param name="duration">持续时间</param>
    /// <param name="delay">延迟时间</param>
    public static Tweener DOFillAnim(this Image image, float num, float duration = 1f, float delay = 0f)
    {
        if (image == null) return null;
        image.fillAmount = 0;
        return image.DOFillAmount(num, duration).SetDelay(delay);
    }

    /// <summary>
    /// Scroll 垂直滚动动画
    /// </summary>
    /// <param name="scroll">Scroll 组件</param>
    /// <param name="duration">持续时间</param>
    /// <param name="delay">延迟时间</param>
    public static Tweener DOVerticalAnim(this ScrollRect scroll, float duration = 30f, float delay = 1f)
    {
        scroll.DOKill();
        scroll.verticalNormalizedPosition = 1f;
        return scroll.DOVerticalNormalizedPos(0, duration).SetEase(Ease.Linear).SetLoops(-1, LoopType.Restart).SetDelay(delay);
    }

    /// <summary>
    /// Scroll 水平滚动动画
    /// </summary>
    /// <param name="scroll">Scroll 组件</param>
    /// <param name="duration">持续时间</param>
    /// <param name="delay">延迟时间</param>
    public static Tweener DOHorizontalAnim(this ScrollRect scroll, float duration = 30f, float delay = 1f)
    {
        scroll.DOKill();
        scroll.horizontalNormalizedPosition = 0f;
        return scroll.DOHorizontalNormalizedPos(1, duration).SetEase(Ease.Linear).SetLoops(-1, LoopType.Restart).SetDelay(delay);
    }

    /// <summary>
    /// 材质动画
    /// </summary>
    /// <param name="material">材质对象</param>
    /// <param name="property">属性名称</param>
    /// <param name="endValue">目标值</param>
    /// <param name="startValue">初始值</param>
    /// <param name="duration">动画时间</param>
    /// <param name="delay">延迟</param>
    public static Tweener DoPropertyAnim(this Material material, string property, float endValue, float startValue = 0f, float duration = 1f, float delay = 0f)
    {
        if (material == null) { return null; }
        if (!material.HasProperty(property)) { return null; }
        material.SetFloat(property, startValue);
        float data = startValue;
        return DOTween.To(() => data, (x) => { data = x; material.SetFloat(property, x); }, endValue, duration).SetDelay(delay);
    }

    /// <summary>
    /// 材质颜色动画
    /// </summary>
    /// <param name="material">材质对象</param>
    /// <param name="property">属性名称</param>
    /// <param name="endColor">目标颜色</param>
    /// <param name="duration">动画时间</param>
    /// <param name="delay">延迟</param>
    public static Tweener DoColorAnim(this Material material, string property, Color endColor, float duration = 1f, float delay = 0f)
    {
        if (material == null) { return null; }
        if (!material.HasProperty(property)) { return null; }
        Color color = material.GetColor(property);
        return DOTween.To(() => color, (x) => { color = x; material.SetColor(property, color); }, endColor, duration).SetDelay(delay);
    }

}