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

namespace ActionTool
{
    public static class ActionManager 
    {
        public static string s_AnimFolder = "Assets/Art/Animations/";
        public static string s_Controller = "Assets/ActionTool/controller_temp.controller";
        public static string s_AnimationDataFolder = "Assets/Data/AnimationData/";
        public static string s_UnitDataFolder = "Assets/Data/UnitData/";

        public static ActionEditor AnimationWindow;
        public static ActionPreviewEditor PreviewWindow;
        public static ActionEventEditor EventEditWindow;
        public static ActionColliderEditor ColliderWindow;

        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;
        private static GameObject s_UnitInstance;
        private static Animator s_Animator;
        private static AnimatorOverrideController s_OverrideContorller;

        private static ActionData s_CurActionData;

        public static Vector3 s_InitPosition = Vector3.zero;

        public static Quaternion s_InitRotation = Quaternion.identity;

        private static bool s_IsPlay;
        public static bool IsPlay { get { return s_IsPlay; } }

        public static void OnSelectObj(GameObject obj)
        {
            Release();
            s_CurrentUnit = obj;
            if(s_CurrentUnit != null)
            {
                s_UnitInstance = GameObject.Instantiate(obj);
                InitializeUnitInstance(s_UnitInstance);
            }
        }

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

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

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

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

        public static string GetUnitName()
        {
            if (s_CurrentUnit == null)
                return null;
            return s_CurrentUnit.name;
        }

        public static void Release()
        {
            if(s_UnitInstance != null)
                GameObject.DestroyImmediate(s_UnitInstance);
            s_UnitInstance = null;
            s_CurrentUnit = null;
            s_CurrentAnimationName = null;
            s_Animator = null;
        }

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

            unit.transform.position = s_InitPosition;
            unit.transform.rotation = s_InitRotation;

            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;

            UnitRootMotion rootMotion = s_UnitInstance.GetComponent<UnitRootMotion>();
            Object.DestroyImmediate(rootMotion);
        }

        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.SetCurrentAnimTime(0);
                s_CurActionData.StartFrame();
            }
        }

    }
}