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

public class ExportTool : EditorWindow
{
    //"ExpFbx"
    const string ExpFolderName = "/Res/Mesh";
    const string MaterialPath = "Assets/Res/Materials/";
    const string MeshPath = "Assets/Res/Mesh/";
    static List<string> fileList;

    [MenuItem("Model/导出Fbx")]
    public static void ExportUnique()
    {
        Transform[] selectedObjs = Selection.transforms;
        GetFileList();
        foreach (Transform trans in selectedObjs)
        {
            ExportFbx(trans);
        }
    }

    public static void GetFileList()
    {
        fileList = new List<string>();
        var path = Application.dataPath + ExpFolderName;
        if (!Directory.Exists(path))
        {
            Directory.CreateDirectory(path);
        }
        var fileArr = Directory.GetFiles(path, "*.fbx");
        foreach (var fpath in fileArr)
        {
            var name = Path.GetFileNameWithoutExtension(fpath);
            fileList.Add(name);
        }
    }

    public static string ParseName(string name)
    {
        return Regex.Replace(name, @"([\s\S]+)\s\(?\d+\)?", "$1").Trim();
    }

    public static void ExportFbx(Transform trans)
    {

        //FBXExporter导不出SkinnedMeshRenderer
        if (trans.GetComponent<MeshFilter>())
        {
            var mesh = trans.GetComponent<MeshFilter>();
            var name = mesh.sharedMesh.name;
            name = ParseName(name);
            if (!fileList.Contains(name))
            {
                fileList.Add(name);
                FBXExporter.ExportFBX(ExpFolderName, name, new GameObject[] { trans.gameObject }, true);
            }
        }
        for (int i = 0; i < trans.childCount; i++)
        {
            ExportFbx(trans.GetChild(i));
        }
    }

    [MenuItem("Model/创建Obj")]
    public static void CreateObj()
    {
        Transform[] selectedObjs = Selection.transforms;
        foreach (Transform trans in selectedObjs)
        {
            CreateObject(null, trans);
        }
    }

    static void CreateObject(Transform parent, Transform target)
    {
        GameObject obj = null;
        obj = new GameObject();
        if (target.GetComponent<MeshFilter>() && target.GetComponent<MeshRenderer>())
        {
            var targMesh = target.GetComponent<MeshFilter>();
            var targMat = target.GetComponent<MeshRenderer>().sharedMaterial;
            var targMeshName = ParseName(targMesh.sharedMesh.name);
            var targMatName = targMat.name;
            var mesh = AssetDatabase.LoadAssetAtPath(MeshPath + targMeshName + ".fbx", typeof(Mesh)) as Mesh;
            if (targMeshName != mesh.name)
            {
                Debug.Log("Warning!!!" + targMeshName + "!=" + mesh.name);
            }
            if (mesh != null)
            {
                var meshFilter = obj.AddComponent<MeshFilter>();
                meshFilter.sharedMesh = mesh;
            }
            else
            {
                Debug.Log("LoseMesh[" + targMeshName + "]");
            }
            var mat = AssetDatabase.LoadAssetAtPath(MaterialPath + targMatName + ".mat", typeof(Material)) as Material;
            if (mat != null)
            {
                var meshRender = obj.AddComponent<MeshRenderer>();
                meshRender.sharedMaterial = mat;
            }
            else
            {
                Debug.Log("LoseMaterial[" + targMatName + "]");
            }
        }
        else if (target.GetComponent<SkinnedMeshRenderer>())
        {
            Debug.Log("LoseSkinnedMeshRenderer[" + target.name + "]");
        }
        var objName = ParseName(target.gameObject.name);
        obj.name = objName;
        obj.transform.parent = parent;
        obj.transform.position = target.position;
        obj.transform.rotation = target.rotation;
        obj.transform.localScale = target.localScale;
        for (int i = 0; i < target.childCount; i++)
        {
            CreateObject(obj.transform, target.GetChild(i));
        }
    }

}