using System.IO;
using UnityEditor;
using UnityEngine;
using Ashwild.Building;

namespace Ashwild.EditorTools
{
    /// <summary>
    /// Editor-only factory that creates BuildableData assets for the Ashwild Database window.
    /// Kept separate from the window so buildable authoring stays a single-purpose, testable helper —
    /// mirrors RecipeAssetFactory for recipes and ItemAssetFactory for items.
    /// </summary>
    public static class BuildableAssetFactory
    {
        #region Constants

        private const string BuildablesFolder = "Assets/GAME/ScriptableObjects/Buildables";

        #endregion

        #region Buildable Asset

        /// <summary>
        /// Creates a fresh BuildableData asset under the buildables folder with a unique name, seeding
        /// its display name so the new asset is immediately coherent in the menu list. Returns the asset
        /// for selection, or null if the folder cannot be made.
        /// </summary>
        public static BuildableData CreateBuildable(string desiredName)
        {
            if (!EnsureFolder(BuildablesFolder)) return null;

            string safeName = string.IsNullOrWhiteSpace(desiredName) ? "NewBuildable" : desiredName.Trim();
            string assetPath = AssetDatabase.GenerateUniqueAssetPath($"{BuildablesFolder}/{safeName}.asset");

            BuildableData buildable = ScriptableObject.CreateInstance<BuildableData>();
            AssetDatabase.CreateAsset(buildable, assetPath);

            SerializedObject so = new SerializedObject(buildable);
            so.FindProperty("displayName").stringValue = safeName;
            so.ApplyModifiedPropertiesWithoutUndo();

            EditorUtility.SetDirty(buildable);
            AssetDatabase.SaveAssets();
            return buildable;
        }

        #endregion

        #region Internal Helpers

        /// <summary>
        /// Ensures a project-relative asset folder exists, creating any missing segments. Returns
        /// false (and logs) when the path cannot be created.
        /// </summary>
        private static bool EnsureFolder(string folder)
        {
            if (AssetDatabase.IsValidFolder(folder)) return true;

            string parent = Path.GetDirectoryName(folder).Replace('\\', '/');
            string leaf = Path.GetFileName(folder);
            if (!EnsureFolder(parent))
            {
                Debug.LogError($"[BuildableAssetFactory] Could not create folder '{folder}'.");
                return false;
            }

            AssetDatabase.CreateFolder(parent, leaf);
            return AssetDatabase.IsValidFolder(folder);
        }

        #endregion
    }
}