using UnityEngine;
using UnityEditor;
using IndianOceanAssets.Engine2_5D;

/// <summary>
/// 编辑器工具：基于原始 Enemy Prefab 批量创建 5 个不同外观的敌人预制体。
/// 每个预制体使用不同的 Sprite，保留所有原有组件和参数。
/// 菜单路径：Assets > 创建5个敌人预制体
/// </summary>
public static class EnemyPrefabBatchCreator
{
    [MenuItem("Assets/创建5个敌人预制体")]
    public static void Create()
    {
        // 加载原始敌人 Prefab
        string originalPath = "Assets/2.5D Engine/Enemy.prefab";
        var originalPrefab = AssetDatabase.LoadAssetAtPath<GameObject>(originalPath);
        if (originalPrefab == null)
        {
            EditorUtility.DisplayDialog("错误", "找不到原始敌人 Prefab: " + originalPath, "确定");
            return;
        }

        // 确保输出目录存在
        string outputDir = "Assets/enemy/Prefabs";
        if (!AssetDatabase.IsValidFolder(outputDir))
        {
            string parent = "Assets/enemy";
            AssetDatabase.CreateFolder(parent, "Prefabs");
        }

        // 5个敌人的 Sprite 路径和名称
        string[] spritePaths = {
            "Assets/enemy/sprites/enemy1.png",
            "Assets/enemy/sprites/enemy2.png",
            "Assets/enemy/sprites/enemy3.png",
            "Assets/enemy/sprites/enemy4.png",
            "Assets/enemy/sprites/enemy5.png",
        };
        string[] prefabNames = { "enemy_01", "enemy_02", "enemy_03", "enemy_04", "enemy_05" };

        int created = 0;

        for (int i = 0; i < 5; i++)
        {
            // 加载 Sprite
            Sprite sprite = AssetDatabase.LoadAssetAtPath<Sprite>(spritePaths[i]);
            if (sprite == null)
            {
                Debug.LogWarning($"[EnemyPrefabCreator] 找不到 Sprite: {spritePaths[i]}，跳过");
                continue;
            }

            // 实例化原始 Prefab
            GameObject instance = Object.Instantiate(originalPrefab);
            instance.name = prefabNames[i];

            // 替换主 Sprite（查找根物体或 GFX 子物体的 SpriteRenderer）
            SpriteRenderer mainSR = instance.GetComponentInChildren<SpriteRenderer>();
            if (mainSR != null)
            {
                mainSR.sprite = sprite;
            }
            else
            {
                // 如果没有 SpriteRenderer，添加一个
                mainSR = instance.AddComponent<SpriteRenderer>();
                mainSR.sprite = sprite;
                mainSR.sortingOrder = 1;
            }

            // 保存为新 Prefab
            string prefabPath = $"{outputDir}/{prefabNames[i]}.prefab";
            PrefabUtility.SaveAsPrefabAsset(instance, prefabPath);
            Object.DestroyImmediate(instance);

            created++;
            Debug.Log($"[EnemyPrefabCreator] 创建: {prefabPath} (Sprite: {sprite.name})");
        }

        AssetDatabase.Refresh();

        // 高亮输出目录
        var folder = AssetDatabase.LoadAssetAtPath<Object>(outputDir);
        if (folder != null)
        {
            Selection.activeObject = folder;
            EditorGUIUtility.PingObject(folder);
        }

        Debug.Log($"[EnemyPrefabCreator] 完成！共创建 {created} 个敌人预制体于 {outputDir}");
    }
}