using System;
using System.IO;
using System.Collections;
using System.Collections.Generic;
using UnityEditor;
using UnityEngine;

namespace ActionTool
{
	// ActionTool callback delegates
	public delegate void CallbackHandler(params object[] objs);

	public static class ActionManager
    {
        public enum UnitType
        {
            PC,
            NPC, 
        }

        public static string s_Controller = "Assets/ActionTool/controller_temp.controller";
        static string s_SettingPath = "Assets/ActionTool/ActionTool Settings.asset";
		public static string scenePath { get { return "Assets/ActionTool/ActionToolScene.unity"; } }

        //public static string s_AnimFolder = "Assets/Art/Animations/";
        //public static string s_AnimationDataFolder = "Assets/Data/AnimationData/";
        //static string s_RootMotionDataFolder = "Assets/Data/RootMotionData/";

        public static ActionEditor AnimationWindow;
        public static ActionPreviewEditor PreviewWindow;
        public static ActionEventEditor EventEditWindow;
        public static ActionColliderFrameEditor ColliderFrameWindow;
        public static ActionColliderEditor ColliderWindow;
        public static ActionRootMotionEditor RootMotionEditor;

        public static ActionToolSettings Settings;

        //规定timeline上事件的采样频率是30帧
        public const int FPS = 30;

        public static float Speed = 1;

        public static GameObject CurrentUnit
        {
            get
            {
                return s_CurrentUnit;
            }
        }

        public static string CurrentAnimationName
        {
            get
            {
                return s_CurrentAnimationName;
            }
        }

        private static GameObject s_CurrentUnit;
        private static string s_CurrentAnimationName;
        public static GameObject unitInstance { get { return s_UnitInstance; } }
        public static GameObject unitRoot { get; private set; }
        private static GameObject s_UnitInstance;
        private static Animator s_Animator;
        private static AnimatorOverrideController s_OverrideContorller;

        private static ActionData s_CurActionData;
        public static ActionData actionData { get { return s_CurActionData; } }

        public static Vector3 s_InitPosition = Vector3.zero;
        public static Quaternion s_InitRotation = Quaternion.identity;

        private static RootMotionData s_RootMotion;

        private static AnimationData m_SharedAnimationData; // 资源
        public static AnimationData sharedAnimationData { get { return m_SharedAnimationData; } }
        private static AnimationData m_AnimationData;
        public static AnimationData animationData
        {
            get
            {
                return m_AnimationData;
            }
            set
            {
                m_AnimationData = value;
                if (gizmos)
                {
                    gizmos.SetAnimationData(value);
                }
            }
        }
        public static AnimationClip curClip;

        public static string AnimationDataPath
        {
            get
            {
                return AssetDatabase.GetAssetPath(sharedAnimationData);
            }
        }

        private static AnimationEventBase m_CurAnimationEvent; 
        public static AnimationEventBase animationEvent { get { return m_CurAnimationEvent; } }

        private static ColliderData s_CurColliderData;
        public static ColliderData colliderData { get { return s_CurColliderData; } set { s_CurColliderData = value; } }

        public static ColliderData.ColliderFrame s_CurEditColliderFrame;
        public static ColliderData.ColliderFrame editColliderFrame { get { return s_CurEditColliderFrame; } }
        public static ColliderData s_CurEditFrameCollider;

        private static ActionToolGizmos s_Gizmos;
        public static ActionToolGizmos gizmos { get { return s_Gizmos; } }

        // 是否在自动播放
        private static bool s_IsPlay;
        public static bool IsPlay { get { return s_IsPlay; } }

        private static GameObject s_RootActionTool;
        private const string kRootActionTool = "RootActionTool";
        private const string kUnitRoot = "UnitRoot";

		private static AnimationEventBase copiedAnimationEvent;

        public static int MaxEventsPerFrame // 所有帧里面事件最多有几个
        {
            get
            {
                if (animationData == null)
                    return 0;
                return animationData.GetMaxAnimationEventsCount();
            }
        }

        public static int GridRowCount 
        {
            get
            {
                bool hasRM = animationData != null && animationData.overrideRootMotion == true;
                return (MaxEventsPerFrame + 1) + (animationData != null ? animationData.GetBoxesCount() : 0) + (hasRM ? 1 : 0);
            }
        }

        public static string unitFolder;
        public static string unitAnimationDataFolder { get { return unitFolder + "AnimationData/"; } } 
        public static string unitRootMotionFolder { get { return unitFolder + "RootMotion/"; } }
        public static string unitAnimationClipFolder { get { return unitFolder + "AnimationClip/"; } }
        public static string unitDataFolder { get { return unitFolder + "UnitData/"; } }

        public static int colliderIndex;

		public static CallbackHandler onSelectObj;

		public static void OnSelectObj(GameObject obj)
        {
            Release();
			s_CurrentUnit = obj;
            if(s_CurrentUnit != null)
            {
                string path = AssetDatabase.GetAssetPath(obj);
                string folder = Path.GetDirectoryName(path).Replace('\\', '/');
                folder = folder.Substring(0, folder.LastIndexOf('/'));
                unitFolder = folder + "/";
				s_UnitInstance = GameObject.Instantiate(obj);
				InitializeUnitInstance(s_UnitInstance);
            }
			onSelectObj?.Invoke(obj);
		}

        public static void OnSelectAnimation(string animation)
        {
            s_CurrentAnimationName = animation;
            if (PreviewWindow == null)
                PreviewWindow = EditorWindow.GetWindow<ActionPreviewEditor>();
            PreviewWindow.Repaint();

            string animpath = unitAnimationClipFolder + animation + ".anim";
            AnimationClip clip = AssetDatabase.LoadAssetAtPath(animpath, typeof(AnimationClip)) as AnimationClip;
            curClip = clip;
            if (clip)
            {
                s_OverrideContorller["EmptyAction"] = clip;
            }

            string rootmotionData = unitRootMotionFolder + animation + ".asset";
            s_RootMotion = AssetDatabase.LoadAssetAtPath<RootMotionData>(rootmotionData);
            if (s_RootMotion == null)
            {
                Debug.LogError("[ActionTool] 没有对应的rootmotion, " + rootmotionData);
            }

            if (s_CurActionData == null)
                s_CurActionData = new ActionData();
            s_CurActionData.Initialize(s_Animator, clip, s_RootMotion);

            string animationDataPath = unitAnimationDataFolder + animation + ".asset";
            AnimationData asset = AssetDatabase.LoadAssetAtPath<AnimationData>(animationDataPath);
            m_SharedAnimationData = asset;
            if(asset != null)
                animationData = UnityEngine.Object.Instantiate<AnimationData>(asset);
            else 
                animationData = null;

            OnSelectAnimationEvent(null);
            OnSelectColliderFrame(null, null);
            OnSelectBox(null);
            if (EventEditWindow) EventEditWindow.Close();
            if (ColliderFrameWindow) ColliderFrameWindow.Close();

        }

        public static bool HasSelectObj()
        {
            return s_CurrentUnit != null;
        }

        public static void Release()
        {
            if(s_UnitInstance != null)
                GameObject.DestroyImmediate(s_UnitInstance);
            s_UnitInstance = null;
            s_CurrentUnit = null;
            s_CurrentAnimationName = null;
            s_Animator = null;
            s_RootActionTool = GameObject.Find(kRootActionTool);
            if (s_RootActionTool)
                GameObject.DestroyImmediate(s_RootActionTool);
            s_CurActionData = null;
            s_CurEditColliderFrame = null;
            s_CurColliderData = null;
            s_CurrentAnimationName = null;
        }

        private static void InitializeUnitInstance(GameObject unit)
        {
            if (unit == null)
                return;

            unit.transform.position = Vector3.zero;
            unit.transform.rotation = Quaternion.Euler(0, 90, 0);

            var tempUnitRoot = GameObject.Find(kUnitRoot);
            if (tempUnitRoot)
                GameObject.DestroyImmediate(tempUnitRoot);
            unitRoot = new GameObject(kUnitRoot);
            unitRoot.transform.localScale = Vector3.one;
            unitRoot.transform.rotation = s_InitRotation;
            unitRoot.transform.position = s_InitPosition;
            unit.transform.SetParent(unitRoot.transform);

            s_RootActionTool = GameObject.Find(kRootActionTool);
            if(s_RootActionTool == null)
                s_RootActionTool = new GameObject(kRootActionTool);

            unitRoot.transform.SetParent(s_RootActionTool.transform);

            s_Animator = unit.GetComponentInChildren<Animator>();
            if(s_Animator == null)
            {
                Debug.LogError("[ActionTool] 角色prefab下没有animator");
                return;
            }

            RuntimeAnimatorController controller = AssetDatabase.LoadAssetAtPath(s_Controller, typeof(RuntimeAnimatorController)) as RuntimeAnimatorController;
            if(controller == null)
            {
                Debug.LogError("[ActionTool] 文件丢失" + s_Controller);
                return;
            }

            s_OverrideContorller = new AnimatorOverrideController(controller);
            s_OverrideContorller.name = "override controller";
            s_Animator.runtimeAnimatorController = s_OverrideContorller;

            s_Animator.applyRootMotion = false;

            s_Gizmos = s_RootActionTool.AddComponent<ActionToolGizmos>();
            s_Gizmos.Initialize(unitRoot);

            Settings = AssetDatabase.LoadAssetAtPath<ActionToolSettings>(s_SettingPath);
        }

        public static void UpdateFrame()
        {
            if (s_CurActionData != null)
                s_CurActionData.UpdateFrame();
        }

        public static void Pause()
        {
            s_IsPlay = !s_IsPlay;
            if(s_IsPlay && s_CurActionData != null)
            {
                s_CurActionData.StartFrame();
            }
        }

        public static void Start()
        {
            if (s_CurActionData != null)
                s_CurActionData.curAnimTimeNormal = 0;
        }

        public static void Stop()
        {
            if (s_CurActionData != null)
            {
                if (s_IsPlay)
                    Pause();
                s_CurActionData.curAnimTimeNormal = 0;
            }
        }

        public static void Previous()
        {
            if (s_IsPlay)
                Pause();
            float cur = s_CurActionData.curAnimFrame;
            float pre = Mathf.Ceil(cur - 1);
            pre = (int)Mathf.Clamp(pre, 0, s_CurActionData.totalFrame);
            s_CurActionData.SetCurrentAnimTime(pre);
        }

        public static void Next()
        {
            if (s_IsPlay)
                Pause();
            float cur = s_CurActionData.curAnimFrame;
            float next = Mathf.Floor(cur + 1);
            next = (int)Mathf.Clamp(next, 0, s_CurActionData.totalFrame);
            s_CurActionData.SetCurrentAnimTime(next);
        }

        public static void End()
        {
            if (s_CurActionData != null)
                s_CurActionData.curAnimTimeNormal = 1;
        }

        public static void CreateAnimationData()
        {
            string animation = s_CurrentAnimationName;
            string animationDataPath = unitAnimationDataFolder + animation + ".asset";
            string animpath = unitAnimationClipFolder + animation + ".anim";
            AnimationData animData = new AnimationData();
            animData.animationName = s_CurrentAnimationName;
            animData.animationPath = animpath;
            AssetDatabase.CreateAsset(animData, animationDataPath);
            AssetDatabase.Refresh();
            m_SharedAnimationData = animData;
            animationData = UnityEngine.Object.Instantiate<AnimationData>(animData);
        }

        public static void SaveAnimationData()
        {
            if (animationData == null)
            {
                Debug.LogError("[ActionTool] 没有animation data数据");
                return;
            }
            string animation = s_CurrentAnimationName;
            string animationDataPath = unitAnimationClipFolder + animation + ".asset";
            EditorUtility.CopySerialized(animationData, m_SharedAnimationData);
			m_SharedAnimationData.OnSaveToDisk();
			EditorUtility.SetDirty(m_SharedAnimationData);
            AssetDatabase.SaveAssets();
            AssetDatabase.Refresh();
        }

        public static void NewHurtBox()
        {
            if (animationData == null)
            {
                Debug.LogError("[ActionTool] 没有animation data数据");
                return;
            }
            ColliderData box = new ColliderData(ColliderBox.EColliderType.HurtBox, ColliderBox.Pivot.MiddleBottom);
            animationData.AddBox(ref animationData.hurtBoxes, box);
        }

        public static void NewHitBox()
        {
            if (animationData == null)
            {
                Debug.LogError("[ActionTool] 没有animation data数据");
                return;
            }
            ColliderData box = new ColliderData(ColliderBox.EColliderType.HitBox, ColliderBox.Pivot.MiddleCenter);
            animationData.AddBox(ref animationData.hitBoxes, box);
        }

        public static void DeleteCurBox()
        {
            if(animationData != null && s_CurColliderData != null)
            {
                animationData.DeleteBox(s_CurColliderData);
                s_CurColliderData = null;
            }
        }

        public static void EditCollider()
        {
            if (s_CurColliderData == null)
                return;
            if(ColliderWindow == null)
                ColliderWindow = EditorWindow.GetWindow<ActionColliderEditor>(true);
        }

        public static void OnSelectBox(ColliderData collider, int index = 0)
        {
            s_CurColliderData = collider;
            if (ColliderWindow != null)
                ColliderWindow.Repaint();
            colliderIndex = index;
            EditCollider();
        }

        public static void AddNewBoxFrame(object param)
        {
            BoxParam frame = (BoxParam)param;
            int frameIndex = frame.frame;
            var data = frame.collider; 
            if(data != null)
            {
                var frameData = data.AddFrame(frameIndex);
				OnSelectColliderFrame(frameData, data);
            }
        }

        public static void DeleteBoxFrame(object param)
        {
            BoxParam frame = (BoxParam)param;
            int frameIndex = frame.frame;
            var data = frame.collider;
            if (data != null)
            {
                data.DeleteFrame(frameIndex);
            }
        }

        public static void DeleteCurFrame()
        {
            if (s_CurEditFrameCollider == null)
                return;
            if (s_CurEditColliderFrame == null)
                return;
            s_CurEditFrameCollider.DeleteFrame(s_CurEditColliderFrame.frame);

            s_CurEditColliderFrame = null;
        }

        public static void OnSelectColliderFrame(ColliderData.ColliderFrame frame, ColliderData collider = null)
        {
            s_CurEditColliderFrame = frame;
            s_CurEditFrameCollider = collider;

            if (frame != null)
            {
				ColliderFrameWindow = EditorWindow.GetWindow<ActionColliderFrameEditor>(true);

				ActionData action = ActionManager.actionData;
                float normaltime = frame.frame / action.totalFrame;
                action.curAnimTimeNormal = normaltime;
            }
        }

		public static void AddNewEvent(object param)
		{
            EventParam eventParam = (EventParam )param;
            string eventName = eventParam.eventName; // TimelineEventProxy.EEventType
            int frame = eventParam.frame;
			Debug.Log("[ActionTool] Add new event " + eventName);
			if (animationData == null)
			{
				Debug.LogError("[ActionTool] 没有animation data数据");
				return;
			}
			Type type = TimelineEventProxy.GetTypeByName(eventName);
			if(type == null)
			{
				Debug.LogError("[ActionTool] 没有创建对应的类, " + eventName);
				return;
			}
			AnimationEventBase animEvent = Activator.CreateInstance(type) as AnimationEventBase;
			if(animEvent)
			{
                animEvent.name = animEvent.type.ToString();
                animEvent.startFrame = frame;
				animationData.AddEvent(animEvent);
                OnSelectAnimationEvent(animEvent);
            }
			else
			{
				Debug.LogError("[ActionTool] 实例化失败, " + eventName);
				return;
			}
		}

		public static void PasteEvent(object param)
		{
			if (copiedAnimationEvent == null)
				return;
			int frame = (int)param;
			AnimationEventBase animEvent = UnityEngine.Object.Instantiate(copiedAnimationEvent);
			if(animEvent != null)
			{
				animEvent.name = animEvent.type.ToString();
				animEvent.startFrame = frame;
				animationData.AddEvent(animEvent);
				OnSelectAnimationEvent(animEvent);
			}
		}

		public static void OnSelectAnimationEvent(AnimationEventBase animEvent)
        {
            m_CurAnimationEvent = animEvent;
            if(animEvent != null)
            {
                EventEditWindow = EditorWindow.GetWindow<ActionEventEditor>(true);
            }
        }

        public static void DeleteEvent(AnimationEventBase animEvent)
        {
            if (animationData == null)
                return;
            animationData.DeleteEvent(animEvent);
        }

        public static void EditRootMotionOverrideData()
        {
            RootMotionEditor = EditorWindow.GetWindow<ActionRootMotionEditor>(true);
        }

		public static void CopyAnimationEvent(AnimationEventBase animEvent)
		{
			copiedAnimationEvent = UnityEngine.Object.Instantiate(animEvent);
		}

        public static void ResetUnitRootPosAndRot()
        {
            unitRoot.transform.position = s_InitPosition;
            unitRoot.transform.rotation = s_InitRotation;
        }

    }
}