using Chickensoft.AutoInject;
using Chickensoft.GodotNodeInterfaces;
using Chickensoft.Introspection;
using GameJamDungeon;
using Godot;
using System.Linq;

public interface IDungeonRoom : INode3D
{
  DungeonRoomLogic DungeonRoomLogic { get; }
  public Marker3D PlayerSpawn { get; set; }
  public Marker3D TeleportSpawn { get; set; }
}

[Meta(typeof(IAutoNode))]
public partial class DungeonRoom : Node3D, IDungeonRoom, IProvide<DungeonRoomLogic>
{
  public override void _Notification(int what) => this.Notify(what);

  DungeonRoomLogic IProvide<DungeonRoomLogic>.Value() => DungeonRoomLogic;

  [Dependency] public IGameRepo GameRepo => this.DependOn<IGameRepo>();

  public DungeonRoomLogic DungeonRoomLogic { get; set; } = default!;

  [Node] public Marker3D PlayerSpawn { get; set; } = default!;

  [Node] public Marker3D TeleportSpawn { get; set; } = default!;

  [Node] public Node3D ItemSpawnPoints { get; set; } = default!;

  [Node] public Node3D EnemySpawnPoints { get; set; } = default!;

  [Node] public ItemDatabase ItemDatabase { get; set; } = default!;

  [Node] public EnemyDatabase EnemyDatabase { get; set; } = default!;

  public DungeonRoomLogic.IBinding DungeonRoomBinding { get; set; } = default!;

  public void Setup()
  {
    DungeonRoomLogic = new DungeonRoomLogic();
    DungeonRoomLogic.Set(this as IDungeonRoom);
    DungeonRoomLogic.Set(GameRepo);
    SpawnItems();
    SpawnEnemies();
  }

  private void SpawnItems()
  {
    var itemSpawnPoints = ItemSpawnPoints.GetChildren();
    var rng = new RandomNumberGenerator();
    rng.Randomize();
    var numberOfItemsToSpawn = rng.RandiRange(1, itemSpawnPoints.Count);
    itemSpawnPoints.Shuffle();
    var database = ItemDatabase.Initialize();
    foreach (Marker3D spawnPoint in itemSpawnPoints)
    {
      if (numberOfItemsToSpawn <= 0)
        break;
      numberOfItemsToSpawn--;

      var weights = database.Select(x => x.Info.SpawnRate).ToArray();
      var selectedItem = database[rng.RandWeighted(weights)];
      var duplicated = selectedItem.Duplicate((int)DuplicateFlags.UseInstantiation) as Node3D;
      duplicated.Position = spawnPoint.Position;
      AddChild(duplicated);
    }
  }

  private void SpawnEnemies()
  {
    var rng = new RandomNumberGenerator();
    rng.Randomize();
    var enemySpawnPoints = EnemySpawnPoints.GetChildren();
    var numberOfEnemiesToSpawn = rng.RandiRange(1, enemySpawnPoints.Count);

    foreach (Marker3D spawnPoint in enemySpawnPoints)
    {
      if (numberOfEnemiesToSpawn <= 0)
        break;
      numberOfEnemiesToSpawn--;

      var enemy = EnemyDatabase.EnemyList[rng.RandWeighted(EnemyDatabase.SpawnRate)];
      var instantiatedEnemy = enemy.Instantiate<Enemy>();
      instantiatedEnemy.Position = spawnPoint.Position;
      AddChild(instantiatedEnemy);
    }
  }

  public void OnResolved()
  {
    DungeonRoomBinding = DungeonRoomLogic.Bind();

    GameRepo.SetPlayerGlobalPosition(PlayerSpawn.GlobalPosition);

    DungeonRoomLogic.Start();
    this.Provide();
  }
}