using Godot;
using Newlon.Resources;
using System.Collections.Generic;

namespace Newlon;

public partial class GameRegistry : Node
{
	private const string PLANT_RESOURCE_PATH = "res://assets/plants/";
	private const string ZOMBIE_RESOURCE_PATH = "res://assets/zombies/";
	public static GameRegistry Instance { get; private set; }
	public static readonly Dictionary<string, EntityResource> EntityDictionary = [];

	public override void _EnterTree()
	{
		//Plant init
		string[] plantFiles = ResourceLoader.ListDirectory(PLANT_RESOURCE_PATH);

		foreach (var file in plantFiles)
		{
			if (ResourceLoader.Exists(PLANT_RESOURCE_PATH + file))
			{
				var plant = ResourceLoader.Load<PlantResource>(PLANT_RESOURCE_PATH + file);
				plant.internal_id = file.ToLower().Split('.')[0];
				EntityDictionary.Add(file.ToLower().Split('.')[0], plant);
			}
		}
		//Zombie init
		string[] zombieFiles = ResourceLoader.ListDirectory(ZOMBIE_RESOURCE_PATH);

		foreach (var file in zombieFiles)
		{
			if (ResourceLoader.Exists(ZOMBIE_RESOURCE_PATH + file))
			{
				var zombie = ResourceLoader.Load<ZombieResource>(ZOMBIE_RESOURCE_PATH + file);
				zombie.internal_id = file.ToLower().Split('.')[0];
				EntityDictionary.Add(file.ToLower().Split('.')[0], zombie);
			}
		}
	}

	public static EntityResource GetEntityByName(string name)
	{
		if (EntityDictionary.ContainsKey(name) == false) return null;
		return EntityDictionary[name];
	}
	public static List<string> GetEntityNames()
	{
		List<string> result = [];
		foreach (var key in EntityDictionary.Keys)
		{
			result.Add(key);
		}
		return result;
	}
	public static List<EntityResource> GetEntities()
	{
		List<EntityResource> result = [];
		foreach (var value in EntityDictionary.Values)
		{
			result.Add(value);
		}
		return result;
	}
	public static List<PlantResource> GetPlants()
	{
		var entities = GetEntities();
		List<PlantResource> plants = [];

		foreach (var entity in entities)
		{
			if (entity is PlantResource plant)
			{
				plants.Add(plant);
			}
		}

		return plants;
	}
	public static List<ZombieResource> GetZombies()
	{
		var entities = GetEntities();
		List<ZombieResource> zombies = [];

		foreach (var entity in entities)
		{
			if (entity is ZombieResource zombie)
			{
				zombies.Add(zombie);
			}
		}

		return zombies;
	}
	public static int GetEntityCount()
	{
		return EntityDictionary.Count;
	}

}