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

namespace Module.ProjectValidator.Editor
{
    internal static class EditorAssetUtility
    {
        public static T LoadFirstAsset<T>(string name) where T : Object
        {
            var guids = AssetDatabase.FindAssetGUIDs($"a:assets t:{typeof(T).Name} {name}");
            return guids.Length != 0 ? AssetDatabase.LoadAssetByGUID<T>(guids[0]) : null;
        }

        public static T[] LoadAllAssets<T>() where T : Object
        {
            var guids = AssetDatabase.FindAssetGUIDs($"a:assets t:{typeof(T).Name}");
            var list = new List<T>(guids.Length);

            foreach (var guid in guids)
            {
                var asset = AssetDatabase.LoadAssetByGUID<T>(guid);
                
                if (asset != null)
                    list.Add(asset);
            }

            return list.ToArray();
        }
        
        internal static GUID GetAssetGuid(Object obj)
        {
            var assetGuid = new GUID();

            if (obj is GameObject gameObject)
            {
                if (gameObject.scene.isLoaded)
                    GUID.TryParse(AssetDatabase.AssetPathToGUID(gameObject.scene.path), out assetGuid);
                else if (PrefabUtility.IsPartOfPrefabAsset(gameObject))
                    GUID.TryParse(AssetDatabase.AssetPathToGUID(gameObject.scene.path), out assetGuid);
            }
            else
            {
                GUID.TryParse(AssetDatabase.GetAssetPath(obj), out assetGuid);
            }
            
            return assetGuid;
        }

        internal static string GetAssetName(GUID assetGuid)
        {
            if (assetGuid.Empty())
                return string.Empty;
            
            var assetPath = AssetDatabase.GUIDToAssetPath(assetGuid);
            return Path.GetFileNameWithoutExtension(assetPath);
        }

        internal static GUID ObjectToAssetGuid(Object obj)
        {
            var assetPath = AssetDatabase.GetAssetPath(obj);
            var strGuid = AssetDatabase.AssetPathToGUID(assetPath);
            return GUID.TryParse(strGuid, out var guid) ? guid : new GUID();
        }
    }
}