using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
using UnityEngine.Events;

public class BlockFactory : MonoBehaviour
{
    private static BlockFactory Instance;

    private Environment environment;
    private List<BlockData> blockDataList;
    private Dictionary<string, BlockData> blocksData = new Dictionary<string, BlockData>();
    public static BlockFactory getInstance()
    {
        if (Instance == null)
        {
            GameObject factoryObject = new GameObject("blockFactory");
            Instance = factoryObject.AddComponent<BlockFactory>();
        }
        return Instance;
    }
    private void Awake()
    {
        if (Instance == null)
        {
            Instance = this;
        }
        else
        {
            Destroy(gameObject);
        }
    }

    private void Start()
    {
        environment = Environment.getInstance();
        blockDataList = Resources.LoadAll<BlockData>("BlocksData").ToList();

        foreach (BlockData blockData in blockDataList)
        {
            blocksData.Add(blockData.blockName, blockData);
        }
    }

    public GameObject createblock(string prefabId, Vector3 position, Quaternion rotation, string id = null, bool layerDiff = false)
    {
        Debug.Log(prefabId);

        if (blocksData.ContainsKey(prefabId))
        {
            GameObject blockPrefab = blocksData[prefabId].blockPrefab;
            GameObject block = Instantiate(blockPrefab, position, rotation);
            if (layerDiff)
            {
                block.gameObject.layer = LayerMask.NameToLayer("Ignore Interaction");
                Debug.Log($"Set layer of {block} to {LayerMask.LayerToName(block.layer)}");
            }
            // the only blocks added to the environment is created with BlockFactory
            environment.addBlock(block.GetComponent<Block>(), id);
            return block;
        }
        else
        {
            Debug.LogWarning($"block with PrefabId {prefabId} not found!");
            return null;
        }
    }

}