using System;
using System.Collections.Generic;

namespace Ichni.RhythmGame
{
    public class DirtyMarkSubmodule : SubmoduleBase
    {
        public bool isAnyDirty { get; private set; }
        public Dictionary<string, bool> dirtyFlags;

        public DirtyMarkSubmodule(GameElement attachedGameElement) : base(attachedGameElement)
        {
            isAnyDirty = false;
            dirtyFlags = new Dictionary<string, bool>();

            if (!HaveSameSubmodule && attachedGameElement is IHaveDirtyMarkSubmodule host)
            {
                host.dirtyMarkSubmodule = this;
            }
        }

        public void MarkDirty(string flagKey = "All")
        {
            isAnyDirty = true;
            if (!string.IsNullOrEmpty(flagKey))
            {
                dirtyFlags[flagKey] = true;
            }
        }

        public void ExecuteDeferredRefresh()
        {
            if (isAnyDirty && attachedGameElement is IHaveDirtyMarkSubmodule host)
            {
                host.OnDirtyRefresh(dirtyFlags);
                ClearDirty();
            }
        }

        public void ClearDirty()
        {
            isAnyDirty = false;
            dirtyFlags.Clear();
        }

        public override void Refresh()
        {
            MarkDirty("All");
        }

        public override void CheckAndRemoveObservers() { }
    }

    public interface IHaveDirtyMarkSubmodule
    {
        DirtyMarkSubmodule dirtyMarkSubmodule { get; set; }
        
        /// <summary>
        /// 当有一帧收到来自于动画或者其它管理器的脏标记篡改时，在此方法中处理推送至具体表现层的工作。
        /// </summary>
        void OnDirtyRefresh(Dictionary<string, bool> flags);
    }
}