using System.Linq;
using UnityEditor;
using UnityEngine;
using UniGLTF;
#if UNITY_2020_2_OR_NEWER
using UnityEditor.AssetImporters;
#else
using UnityEditor.Experimental.AssetImporters;
#endif


namespace UniVRM10
{
    [CustomEditor(typeof(VrmScriptedImporter))]
    public class VrmScriptedImporterEditorGUI : ScriptedImporterEditor
    {
        // const string TextureDirName = "Textures";
        // const string MaterialDirName = "Materials";
        // const string MetaDirName = "MetaObjects";
        // const string ExpressionDirName = "Expressions";

        VrmScriptedImporter m_importer;
        GltfParser m_parser;
        VrmLib.Model m_model;

        public override void OnEnable()
        {
            base.OnEnable();

            m_importer = target as VrmScriptedImporter;
            m_parser = new GltfParser();
            m_parser.ParsePath(m_importer.assetPath);
            m_model = VrmLoader.CreateVrmModel(m_parser);
        }

        enum Tabs
        {
            Model,
            Materials,
            Vrm,
        }
        static Tabs s_currentTab;

        public override void OnInspectorGUI()
        {
            s_currentTab = MeshUtility.TabBar.OnGUI(s_currentTab);
            GUILayout.Space(10);

            switch (s_currentTab)
            {
                case Tabs.Model:
                    base.OnInspectorGUI();
                    break;

                case Tabs.Materials:
                    EditorMaterial.OnGUIMaterial(m_importer, m_parser, Vrm10MToonMaterialImporter.EnumerateAllTexturesDistinct);
                    break;

                case Tabs.Vrm:
                    break;
            }
        }

        //     var importer = target as VrmScriptedImporter;

        //     EditorGUILayout.LabelField("Extract settings");

        //     EditorGUILayout.BeginHorizontal();
        //     EditorGUILayout.PrefixLabel("Materials And Textures");
        //     GUI.enabled = !(importer.GetExternalUnityObjects<UnityEngine.Material>().Any()
        //         && importer.GetExternalUnityObjects<UnityEngine.Texture2D>().Any());
        //     if (GUILayout.Button("Extract"))
        //     {
        //         importer.ExtractMaterialsAndTextures();
        //     }
        //     GUI.enabled = !GUI.enabled;
        //     if (GUILayout.Button("Clear"))
        //     {
        //         importer.ClearExternalObjects<UnityEngine.Material>();
        //         importer.ClearExternalObjects<UnityEngine.Texture2D>();
        //     }
        //     GUI.enabled = true;
        //     EditorGUILayout.EndHorizontal();

        //     EditorGUILayout.BeginHorizontal();
        //     EditorGUILayout.PrefixLabel("Meta");
        //     GUI.enabled = !importer.GetExternalUnityObjects<UniVRM10.VRM10MetaObject>().Any();
        //     if (GUILayout.Button("Extract"))
        //     {
        //         importer.ExtractMeta();
        //     }
        //     GUI.enabled = !GUI.enabled;
        //     if (GUILayout.Button("Clear"))
        //     {
        //         importer.ClearExternalObjects<UniVRM10.VRM10MetaObject>();
        //     }
        //     GUI.enabled = true;
        //     EditorGUILayout.EndHorizontal();

        //     EditorGUILayout.BeginHorizontal();
        //     EditorGUILayout.PrefixLabel("Expressions");
        //     GUI.enabled = !(importer.GetExternalUnityObjects<UniVRM10.VRM10ExpressionAvatar>().Any()
        //         && importer.GetExternalUnityObjects<UniVRM10.VRM10Expression>().Any());
        //     if (GUILayout.Button("Extract"))
        //     {
        //         importer.ExtractExpressions();
        //     }
        //     GUI.enabled = !GUI.enabled;
        //     if (GUILayout.Button("Clear"))
        //     {
        //         importer.ClearExternalObjects<UniVRM10.VRM10ExpressionAvatar>();
        //         importer.ClearExternalObjects<UniVRM10.VRM10Expression>();
        //     }
        //     GUI.enabled = true;
        //     EditorGUILayout.EndHorizontal();

        //     // ObjectMap
        //     DrawRemapGUI<UnityEngine.Material>("Material Remap", importer);
        //     DrawRemapGUI<UnityEngine.Texture2D>("Texture Remap", importer);
        //     DrawRemapGUI<UniVRM10.VRM10MetaObject>("Meta Remap", importer);
        //     DrawRemapGUI<UniVRM10.VRM10ExpressionAvatar>("ExpressionAvatar Remap", importer);
        //     DrawRemapGUI<UniVRM10.VRM10Expression>("Expression Remap", importer);

        //     base.OnInspectorGUI();
        // }

        // private void DrawRemapGUI<T>(string title, VrmScriptedImporter importer) where T : UnityEngine.Object
        // {
        //     EditorGUILayout.Foldout(_isOpen, title);
        //     EditorGUI.indentLevel++;
        //     var objects = importer.GetExternalObjectMap().Where(x => x.Key.type == typeof(T));
        //     foreach (var obj in objects)
        //     {
        //         EditorGUILayout.BeginHorizontal();
        //         EditorGUILayout.PrefixLabel(obj.Key.name);
        //         var asset = EditorGUILayout.ObjectField(obj.Value, obj.Key.type, true) as T;
        //         if (asset != obj.Value)
        //         {
        //             importer.SetExternalUnityObject(obj.Key, asset);
        //         }
        //         EditorGUILayout.EndHorizontal();
        //     }
        //     EditorGUI.indentLevel--;
        // }
    }
}