using System;
using System.Collections.Generic;
using Spine;
using Spine.Unity;

public static class Extension
{
    public static void RemoveCompletely<T>(this System.Action<T> action, Action<T> removeAction)
    {
        if (null == action)
        {
            return;
        }

        Delegate[] invocations = action.GetInvocationList();

        for (int i = 0; i < invocations.Length; i++)
        {
            if (invocations[i].Equals(removeAction))
            {
                action -= removeAction;
            }
        }
    }

    public static void RemoveCompletely<T, U>(this System.Action<T, U> action, Action<T, U> removeAction)
    {
        if (null == action)
        {
            return;
        }

        Delegate[] invocations = action.GetInvocationList();

        for (int i = 0; i < invocations.Length; i++)
        {
            if (invocations[i].Equals(removeAction))
            {
                action -= removeAction;
            }
        }
    }

    public static void RemoveCompletely(this System.Action action, Action removeAction)
    {
        if (null == action)
        {
            return;
        }

        Delegate[] invocations = action.GetInvocationList();

        for (int i = 0; i < invocations.Length; i++)
        {
            if (invocations[i].Equals(removeAction))
            {
                action -= removeAction;
            }
        }
    }

    public static void RemoveCompletely<T, U, V>(this System.Action<T, U, V> action, Action<T, U, V> removeAction)
    {
        if (null == action)
        {
            return;
        }

        Delegate[] invocations = action.GetInvocationList();

        for (int i = 0; i < invocations.Length; i++)
        {
            if (invocations[i].Equals(removeAction))
            {
                action -= removeAction;
            }
        }
    }

    public static bool IsSpine(this string _resName)
    {
        if (string.IsNullOrEmpty(_resName))
        {
            return false;
        }

        return _resName.Contains("SkeletonData");
    }

    public static bool IsVideo(this string _resName)
    {
        if (string.IsNullOrEmpty(_resName))
        {
            return false;
        }

        return _resName.EndsWith(".mp4");
    }

    public static bool ContainsMotion(this Spine.Skeleton skeleton, string motionName)
    {
        if (skeleton == null || string.IsNullOrEmpty(motionName))
        {
            return false;
        }

        for (int i = 0; i < skeleton.Data.Animations.Count; i++)
        {
            if (skeleton.Data.Animations.Items[i].Name.ToLower() == motionName.ToLower())
            {
                return true;
            }
        }

        return false;
    }

    public static Spine.Animation GetSpineAnimation(this Spine.Skeleton skeleton, string motionName)
    {
        if (skeleton == null || string.IsNullOrEmpty(motionName))
        {
            return null;
        }

        for (int i = 0; i < skeleton.Data.Animations.Count; i++)
        {
            if (skeleton.Data.Animations.Items[i].Name.ToLower() == motionName.ToLower())
            {
                return skeleton.Data.Animations.Items[i];
            }
        }

        return null;
    }

}