using UnityEngine;
using UnityEngine.Tilemaps;

/// <summary>
/// can be inherited by tiles in order to be added to the level manager
/// </summary>
public abstract class LevelTile : TileBase, ILevelObject
{
    [SerializeField]
    private Sprite _sprite;
    public Vector3 Position { get; protected set; }
    public Tilemap Tilemap { get; private set; }

    public abstract void LevelStart();
    public abstract void LevelDestroy();
    public abstract void LevelUpdate();
    public abstract bool Equals(ILevelObject other);

    public override bool StartUp(Vector3Int position, ITilemap tilemap, GameObject go)
    {
        //only execute if application is in play mode
        if (!Application.isPlaying)
        {
            return base.StartUp(position, tilemap, go);
        }

        var comp = tilemap.GetComponent<Tilemap>();

        //need to create an instance of the tile, otherwise the position will change for all tiles instead of only this one.
        var instance = Instantiate(this);
        instance.Position = position;
        instance.Tilemap = comp;

        //lambda expression to be used to check if the tile already exists
        bool isSameTile(LevelTile tile) => tile.Equals(instance);

        //if tile is exactly the same as before, don't add.
        if (LevelManager.Instance.Has<LevelTile>(isSameTile)) return base.StartUp(position, tilemap, go);



        LevelManager.Instance.Add(instance);
        return base.StartUp(position, tilemap, go);
    }
    public override void GetTileData(Vector3Int position, ITilemap tilemap, ref TileData tileData)
    {
        tileData.sprite = _sprite;
        tileData.transform.SetTRS(Vector3.zero, Quaternion.identity, Vector3.one);
        tileData.color = Color.white;
    }


    
}