using System.Collections.Generic;
using System.IO;
using cfg.VehicleCfg;
using Framework;
using Gameplay.Utils;
using UnityEditor;
using UnityEditor.Animations;
using UnityEngine;
namespace VehicleBuilder
{
    /// <summary>
    /// 所有动作都可以没有
    /// body使用的animator Assets/Art/Animations/animator/Vehicle/animator_vehicle.controller
    /// body需要的动作 Assets/Art/Animations/Vehicle/C00001/ani_C00001_D_dead.fbx
    ///     dead
    ///     idle
    ///     move
    ///     restart
    ///     stop
    ///     skill
    /// battery使用的animator Assets/Art/Animations/animator/Battery/animator_battery.controller
    /// battery需要的动作 Assets/Art/Animations/Battery/R00001/ani_R00001_attack01.fbx
    ///     attack01
    ///     idle
    ///     skill
    /// </summary>
    public class VehicleBuildData
    {
        public DataVehicle vehicleConfig;

        public bool isChecked;

        public string bodyName;
        public string batteryName;

        public string errorInfo;

        private string _prefabPath;

        private string[] _bodyAniNames = new string[]
        {
            "dead",
            "idle",
            "move",
            "restart",
            "stop",
            // "skill",
        };

        public void Init()
        {
            var prefabPath = PathEx.GetVehicleSrcModelPath(vehicleConfig.PrefabPath);
            var prefab = AssetDatabase.LoadAssetAtPath<GameObject>(prefabPath);
            if (prefab == null)
            {
                errorInfo = $"载具预制体不存在：{prefabPath}";
                return;
            }
            _prefabPath = prefabPath;

            var prefabName = prefab.name;
            var splits = prefabName.Split('_');
            if (splits.Length != 3)
            {
                errorInfo = $"prefab命名错误：{prefabName}";
                return;
            }
            bodyName = splits[1];

            // 检查所有bodyanims
            for (var i = 0; i < _bodyAniNames.Length; ++i)
            {
                var bodyAnimName = _bodyAniNames[i];
                var combinePath = $"Assets/Art/Animations/Vehicle/{bodyName}/ani_{bodyName}_D_{bodyAnimName}.fbx";
                var loadAnim = AssetDatabase.LoadAssetAtPath<AnimationClip>(combinePath);
                if (loadAnim == null)
                {
                    errorInfo = $"不存在需求动作: {combinePath}";
                    return;
                }
            }
        }

        public void DoBuild()
        {
            var savePath = string.Format(Constants.VEHICLE_OUTPUT_PATH, vehicleConfig.ID);
            var realPath = savePath.Replace("Assets", Application.dataPath);
            if (!Directory.Exists(realPath))
            {
                Directory.CreateDirectory(realPath);
            }

            var loadPrefab = AssetDatabase.LoadAssetAtPath<GameObject>(_prefabPath);
            if (loadPrefab == null)
            {
                Debug.LogError($"找不到载具预制体：{_prefabPath}");
                return;
            }
            loadPrefab = Object.Instantiate(loadPrefab);
            _HandlePrefab(loadPrefab, savePath);

            var savePrefabPath = $"{savePath}/vehicle_{vehicleConfig.ID}.prefab";
            PrefabUtility.SaveAsPrefabAsset(loadPrefab, savePrefabPath);

            // 销毁prefab
            Object.DestroyImmediate(loadPrefab);

            Debug.Log($"生成载具预制体：{savePrefabPath}");
        }

        private void _HandlePrefab(GameObject prefab, string savePath)
        {
            var allTrans = new List<Transform>();
            _DeepSearchTrans(prefab.transform, allTrans);
            var findBody = _SearchByName(allTrans, bodyName);
            if (findBody == null)
            {
                Debug.LogError($"找不到body：{bodyName}");
                return;
            }
            // 删除炮台
            var findBattery = _SearchByName(allTrans, "Battery_point01");
            if (findBattery != null && findBattery.childCount > 0)
            {
                var child = findBattery.GetChild(0);
                if (child != null)
                {
                    Object.DestroyImmediate(child.gameObject);
                }
            }

            // 处理body
            _HandleBody(savePath, findBody);

            EditorUtility.SetDirty(prefab);
            AssetDatabase.SaveAssets();
        }

        private void _HandleBattery(string savePath,
            Transform findBattery)
        {
            var srcController = AssetDatabase.LoadAssetAtPath<AnimatorController>("Assets/Art/Animations/animator/Battery/animator_battery.controller");
            if (srcController == null)
            {
                Debug.LogError($"找不到animator_battery.controller");
                return;
            }
            // 创建一个overrideController
            var overrideController = new AnimatorOverrideController();
            overrideController.runtimeAnimatorController = srcController;
            // 设置动作
            var kvList = new List<KeyValuePair<AnimationClip, AnimationClip>>();
            var oldClips = overrideController.animationClips;
            for (int i = 0; i < oldClips.Length; i++)
            {
                var oldClip = oldClips[i];
                var oldClipName = oldClip.name;
                // ani_R00001_attack01
                var splits = oldClipName.Split('_');
                var finalName = splits[^1];
                var newClipPath = $"Assets/Art/Animations/Battery/{batteryName}/ani_{batteryName}_{finalName}.fbx";
                var newClip = AssetDatabase.LoadAssetAtPath<AnimationClip>(newClipPath);
                if (newClip == null)
                {
                    Debug.LogError($"找不到动作：{newClipPath}");
                    continue;
                }
                kvList.Add(new KeyValuePair<AnimationClip, AnimationClip>(oldClip, newClip));
            }
            overrideController.ApplyOverrides(kvList);
            // 保存controller
            var saveControllerPath = $"{savePath}/ov_battery_{vehicleConfig.ID}.controller";
            AssetDatabase.CreateAsset(overrideController, saveControllerPath);
            AssetDatabase.Refresh();
            overrideController = AssetDatabase.LoadAssetAtPath<AnimatorOverrideController>(saveControllerPath);
            // 设置battery的animator
            var batteryAnimator = findBattery.GetComponent<Animator>();
            if (batteryAnimator == null)
            {
                batteryAnimator = findBattery.gameObject.AddComponent<Animator>();
            }
            batteryAnimator.runtimeAnimatorController = overrideController;
            batteryAnimator.cullingMode = AnimatorCullingMode.AlwaysAnimate;
        }

        private void _HandleBody(string savePath,
            Transform findBody)
        {

            var srcController = AssetDatabase.LoadAssetAtPath<AnimatorController>("Assets/Art/Animations/animator/Vehicle/animator_vehicle.controller");
            if (srcController == null)
            {
                Debug.LogError($"找不到animator_vehicle.controller");
                return;
            }
            // 创建一个overrideController
            var overrideController = new AnimatorOverrideController();
            overrideController.runtimeAnimatorController = srcController;
            // 设置动作
            var kvList = new List<KeyValuePair<AnimationClip, AnimationClip>>();
            var oldClips = overrideController.animationClips;
            for (int i = 0; i < oldClips.Length; i++)
            {
                var oldClip = oldClips[i];
                var oldClipName = oldClip.name;
                // ani_C00001_D_idle
                var splits = oldClipName.Split('_');
                var finalName = splits[^1];
                var newClipPath = $"Assets/Art/Animations/Vehicle/{bodyName}/ani_{bodyName}_D_{finalName}.fbx";
                var newClip = AssetDatabase.LoadAssetAtPath<AnimationClip>(newClipPath);
                if (newClip == null)
                {
                    Debug.LogError($"找不到动作：{newClipPath}");
                    continue;
                }
                kvList.Add(new KeyValuePair<AnimationClip, AnimationClip>(oldClip, newClip));
            }
            overrideController.ApplyOverrides(kvList);
            _CompressOverrideController(overrideController);
            
            // 保存controller
            var saveControllerPath = $"{savePath}/ov_vehicle_{vehicleConfig.ID}.controller";
            AssetDatabase.CreateAsset(overrideController, saveControllerPath);
            AssetDatabase.Refresh();
            overrideController = AssetDatabase.LoadAssetAtPath<AnimatorOverrideController>(saveControllerPath);
            // 设置body的animator
            var bodyAnimator = findBody.GetComponent<Animator>();
            if (bodyAnimator == null)
            {
                bodyAnimator = findBody.gameObject.AddComponent<Animator>();
            }
            bodyAnimator.runtimeAnimatorController = overrideController;
            bodyAnimator.cullingMode = AnimatorCullingMode.AlwaysAnimate;
        }
        
        private void _CompressOverrideController(AnimatorOverrideController overrideController)
        {
            var overrideClips = new List<KeyValuePair<AnimationClip, AnimationClip>>();
            overrideController.GetOverrides(overrideClips);
            var newClips = new List<KeyValuePair<AnimationClip, AnimationClip>>();
            foreach (var oldKV in overrideClips)
            {
                var srcClip = oldKV.Key;
                var dstClip = oldKV.Value;
                if (dstClip == null)
                {
                    dstClip = srcClip;
                }
                var newClip = LTCompressor.AutoCompress(dstClip);
                newClips.Add(new KeyValuePair<AnimationClip, AnimationClip>(srcClip, newClip));
            }
            overrideController.ApplyOverrides(newClips);
        }

        private static Transform _SearchByName(List<Transform> searchList, string name)
        {
            for (int i = 0; i < searchList.Count; i++)
            {
                var trans = searchList[i];
                if (trans.name == name)
                {
                    return trans;
                }
            }
            return null;
        }

        private static void _DeepSearchTrans(Transform searchTrans, List<Transform> result)
        {
            result.Add(searchTrans);
            for (int i = 0; i < searchTrans.childCount; i++)
            {
                var child = searchTrans.GetChild(i);
                _DeepSearchTrans(child, result);
            }
        }

    }
}