#if UNITY_EDITOR
using UnityEngine;
using UnityEditor;
using UnityEngine.UI;
using System.Collections.Generic;
using System.IO;

namespace Kill.Editor
{
    /// <summary>
    /// 批量字体替换工具
    /// 一次性替换项目中所有 Text 组件的字体
    /// </summary>
    public class BatchFontReplacer : EditorWindow
    {
        private Font targetFont;
        private bool includeInactive = true;
        private bool includePrefabs = true;
        private Vector2 scrollPosition;
        private List<string> modifiedObjects = new List<string>();
        
        [MenuItem("Tools/批量替换字体")]
        static void OpenWindow()
        {
            GetWindow<BatchFontReplacer>("批量替换字体");
        }
        
        void OnGUI()
        {
            GUILayout.Label("批量替换字体工具", EditorStyles.boldLabel);
            EditorGUILayout.Space();
            
            // 选择目标字体
            targetFont = (Font)EditorGUILayout.ObjectField(
                "目标字体", targetFont, typeof(Font), false);
            
            if (targetFont == null)
            {
                EditorGUILayout.HelpBox("请选择一个中文字体文件", MessageType.Warning);
                return;
            }
            
            EditorGUILayout.Space();
            
            // 选项
            includeInactive = EditorGUILayout.Toggle("包含未激活的物体", includeInactive);
            includePrefabs = EditorGUILayout.Toggle("包含预制体资源", includePrefabs);
            
            EditorGUILayout.Space();
            
            // 按钮
            EditorGUILayout.BeginHorizontal();
            
            if (GUILayout.Button("替换场景中的 Text", GUILayout.Height(30)))
            {
                ReplaceFontsInScene();
            }
            
            if (GUILayout.Button("替换预制体中的 Text", GUILayout.Height(30)))
            {
                ReplaceFontsInPrefabs();
            }
            
            EditorGUILayout.EndHorizontal();
            
            EditorGUILayout.Space();
            
            if (GUILayout.Button("一键替换全部", GUILayout.Height(40)))
            {
                ReplaceAllFonts();
            }
            
            EditorGUILayout.Space();
            
            // 显示修改记录
            if (modifiedObjects.Count > 0)
            {
                GUILayout.Label($"已修改 {modifiedObjects.Count} 个对象:", EditorStyles.boldLabel);
                scrollPosition = EditorGUILayout.BeginScrollView(scrollPosition, GUILayout.Height(200));
                foreach (var obj in modifiedObjects)
                {
                    EditorGUILayout.LabelField(obj);
                }
                EditorGUILayout.EndScrollView();
            }
        }
        
        /// <summary>
        /// 替换场景中的所有 Text
        /// </summary>
        private void ReplaceFontsInScene()
        {
            if (targetFont == null) return;
            
            modifiedObjects.Clear();
            int count = 0;
            
            // 获取场景中的所有 Text
            Text[] texts = Resources.FindObjectsOfTypeAll<Text>();
            
            foreach (var text in texts)
            {
                // 只处理场景中的物体
                if (!text.gameObject.scene.IsValid()) continue;
                
                // 检查是否未激活
                if (!includeInactive && !text.gameObject.activeInHierarchy) continue;
                
                // 替换字体
                if (text.font != targetFont)
                {
                    Undo.RecordObject(text, "Replace Font");
                    text.font = targetFont;
                    EditorUtility.SetDirty(text);
                    
                    modifiedObjects.Add($"[场景] {text.gameObject.name}");
                    count++;
                }
            }
            
            Debug.Log($"[批量替换字体] 场景中共替换了 {count} 个 Text 组件");
        }
        
        /// <summary>
        /// 替换所有预制体中的 Text
        /// </summary>
        private void ReplaceFontsInPrefabs()
        {
            if (targetFont == null) return;
            
            modifiedObjects.Clear();
            int count = 0;
            
            // 查找所有预制体文件
            string[] prefabGuids = AssetDatabase.FindAssets("t:Prefab", new[] { "Assets" });
            
            foreach (string guid in prefabGuids)
            {
                string path = AssetDatabase.GUIDToAssetPath(guid);
                GameObject prefab = AssetDatabase.LoadAssetAtPath<GameObject>(path);
                
                if (prefab == null) continue;
                
                // 获取预制体中的所有 Text
                Text[] texts = prefab.GetComponentsInChildren<Text>(true);
                bool modified = false;
                
                foreach (var text in texts)
                {
                    if (text.font != targetFont)
                    {
                        text.font = targetFont;
                        modified = true;
                        count++;
                    }
                }
                
                // 保存修改
                if (modified)
                {
                    EditorUtility.SetDirty(prefab);
                    modifiedObjects.Add($"[预制体] {path}");
                }
            }
            
            // 保存所有修改
            AssetDatabase.SaveAssets();
            
            Debug.Log($"[批量替换字体] 预制体中共替换了 {count} 个 Text 组件");
        }
        
        /// <summary>
        /// 一键替换全部
        /// </summary>
        private void ReplaceAllFonts()
        {
            if (targetFont == null)
            {
                EditorUtility.DisplayDialog("错误", "请先选择一个字体", "确定");
                return;
            }
            
            if (EditorUtility.DisplayDialog("确认", 
                "这将替换项目中所有 Text 组件的字体，是否继续？", 
                "确定", "取消"))
            {
                ReplaceFontsInScene();
                ReplaceFontsInPrefabs();
                
                EditorUtility.DisplayDialog("完成", 
                    $"共替换了 {modifiedObjects.Count} 个对象", 
                    "确定");
            }
        }
    }
}
#endif