using System.Collections.Generic;
using Godot;

namespace AceFieldNewHorizon.Scripts.System;

public partial class BuildingRegistry : Node
{
	private Dictionary<string, PackedScene> _registry = new();

	[Export] public string JsonPath { get; set; } = "res://Data/Buildings.json";

	public override void _Ready()
	{
		LoadFromJson(JsonPath);
	}

	public void LoadFromJson(string path)
	{
		var file = FileAccess.Open(path, FileAccess.ModeFlags.Read);
		if (file == null)
		{
			GD.PrintErr($"[BuildingRegistry] Failed to open {path}");
			return;
		}

		var text = file.GetAsText();
		file.Close();

		var json = new Json();
		var error = json.Parse(text);
		if (error != Error.Ok)
		{
			GD.PrintErr($"[BuildingRegistry] Failed to parse JSON: {json.GetErrorMessage()}");
			return;
		}

		var dict = (Godot.Collections.Dictionary)json.Data;

		foreach (string key in dict.Keys)
		{
			var scenePath = dict[key].AsString();
			var scene = GD.Load<PackedScene>(scenePath);

			if (scene != null)
			{
				_registry[key] = scene;
				GD.Print($"[BuildingRegistry] Loaded building '{key}' from {scenePath}");
			}
			else
			{
				GD.PrintErr($"[BuildingRegistry] Failed to load scene for '{key}' at {scenePath}");
			}
		}
	 
		GD.Print($"[BuildingRegistry] Loaded {_registry.Count} buildings");
	}

	public PackedScene GetScene(string id)
	{
		_registry.TryGetValue(id, out var scene);
		return scene;
	}
}