using System.IO;
using UnityEditor;
using UnityEngine;

namespace AibisDream.SystemEditor
{
    public class AnimationClipGenerator : EditorWindow
    {
        private Texture2D selectedTexture;
        private TextAsset selectedJson;
        private DefaultAsset outputFolder;
        private string outputPath = "";
        
        // 动画类型选项
        private enum AnimationTargetType
        {
            SpriteRenderer,  // Sprite动画
            Image            // UIImage动画
        }
        private AnimationTargetType animationType = AnimationTargetType.SpriteRenderer;

        [MenuItem("Tools/Animation Clip Generator")]
        public static void ShowWindow()
        {
            GetWindow<AnimationClipGenerator>("Animation Clip Generator");
        }

        private void OnGUI()
        {
            GUILayout.Label("Animation Clip Generator", EditorStyles.boldLabel);
            EditorGUILayout.Space();

            // 图片文件选择
            EditorGUILayout.LabelField("图片文件 (PNG/JPG)", EditorStyles.boldLabel);
            selectedTexture = (Texture2D)EditorGUILayout.ObjectField(
                "Texture", selectedTexture, typeof(Texture2D), false);

            EditorGUILayout.Space();

            // JSON文件选择
            EditorGUILayout.LabelField("JSON文件", EditorStyles.boldLabel);
            selectedJson = (TextAsset)EditorGUILayout.ObjectField(
                "JSON", selectedJson, typeof(TextAsset), false);

            EditorGUILayout.Space();

            // 动画类型选择
            EditorGUILayout.LabelField("动画类型", EditorStyles.boldLabel);
            animationType = (AnimationTargetType)EditorGUILayout.EnumPopup(
                "Animation Type", animationType);
            EditorGUILayout.HelpBox(
                animationType == AnimationTargetType.SpriteRenderer 
                    ? "生成用于SpriteRenderer的动画（绑定到m_Sprite属性）"
                    : "生成用于Unity UI Image的动画（绑定到m_Sprite属性）",
                MessageType.Info);

            EditorGUILayout.Space();

            // 输出目录选择
            EditorGUILayout.LabelField("输出目录", EditorStyles.boldLabel);
            outputFolder = (DefaultAsset)EditorGUILayout.ObjectField(
                "Output Folder", outputFolder, typeof(DefaultAsset), false);

            // 显示输出路径
            if (outputFolder != null)
            {
                outputPath = AssetDatabase.GetAssetPath(outputFolder);
                EditorGUILayout.HelpBox($"输出路径: {outputPath}", MessageType.Info);
            }
            else
            {
                outputPath = "";
            }

            EditorGUILayout.Space();

            // 生成按钮
            GUI.enabled = selectedTexture != null && selectedJson != null && outputFolder != null;
            if (GUILayout.Button("生成 AnimationClip", GUILayout.Height(30)))
            {
                GenerateAnimationClips();
            }
            GUI.enabled = true;

            EditorGUILayout.Space();

            // 说明信息
            EditorGUILayout.HelpBox(
                "使用说明:\n" +
                "1. 选择PNG或JPG图片文件\n" +
                "2. 选择JSON文件（Aseprite格式或手动格式）\n" +
                "3. 选择输出目录\n" +
                "4. 点击生成按钮\n\n" +
                "注意: 如果图片的SpriteMode是Single，工具会自动根据JSON切图。",
                MessageType.Info);
        }

        private void GenerateAnimationClips()
        {
            if (selectedTexture == null || selectedJson == null || outputFolder == null)
            {
                EditorUtility.DisplayDialog("错误", "请选择图片文件、JSON文件和输出目录", "确定");
                return;
            }

            string texturePath = AssetDatabase.GetAssetPath(selectedTexture);
            string jsonPath = AssetDatabase.GetAssetPath(selectedJson);

            // 验证文件扩展名
            string textureExt = Path.GetExtension(texturePath).ToLower();
            if (textureExt != ".png" && textureExt != ".jpg" && textureExt != ".jpeg")
            {
                EditorUtility.DisplayDialog("错误", "图片文件必须是PNG或JPG格式", "确定");
                return;
            }

            try
            {
                bool isImageAnimation = animationType == AnimationTargetType.Image;
                AnimationClipGeneratorCore.GenerateClips(texturePath, jsonPath, outputPath, isImageAnimation);
                EditorUtility.DisplayDialog("成功", $"AnimationClip已生成到: {outputPath}", "确定");
                
                // 刷新资源数据库
                AssetDatabase.Refresh();
            }
            catch (System.Exception e)
            {
                EditorUtility.DisplayDialog("错误", $"生成失败: {e.Message}", "确定");
                Debug.LogError(e);
            }
        }
    }
}