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

namespace XED
{
    public class WorkController : MonoBehaviour, ISingle
    {
        StackerCrane stackerCrane;

        [SerializeField]
        private GameObject loadPrefab;

        public override void AfterAwake()
        {
            stackerCrane = FindSingle<StackerCrane>();
            stackerCrane.onLoadCompletedEvent += ReArrangeCargo;
        }

        void Update()
        {
            if (Input.GetKeyDown(KeyCode.C))
            {
                SpawnCargo();
            }
            if (Input.GetKeyDown(KeyCode.I))
            {
                stackerCrane.AddTask(new StackerCraneTask(ETaskType.Incoming));
            }
            if (Input.GetKeyDown(KeyCode.O))
            {
                stackerCrane.AddTask(new StackerCraneTask(ETaskType.Outgoing));
            }

            if (stackerCrane.incomeCell.load == null)
            {
                if(readyCargos.Count == 0)
                    return;

                readyCargos.RemoveAt(0);

                if (readyCargos.Count == 0)
                    return;

                var cargo = readyCargos.First();
                stackerCrane.incomeCell.load = cargo;
            }
        }
        List<GameObject> readyCargos = new();
        int index = 0;
        private void SpawnCargo()
        {
            GameObject cargo = Instantiate(loadPrefab);
            cargo.name = index.ToString();
            index++;
            cargo.transform.parent = stackerCrane.incomeCell.transform;
            cargo.transform.localPosition = new Vector3(0f, stackerCrane.incomeCell.transform.childCount - 0.5f, 0f);
            if (stackerCrane.incomeCell.load == null)
                stackerCrane.incomeCell.load = cargo;
            readyCargos.Add(cargo);
        }

        public void ReArrangeCargo(StackerCrane sc)
        {
            for (int i = 0; i < stackerCrane.incomeCell.transform.childCount; i++)
            {
                stackerCrane.incomeCell.transform.GetChild(i).transform.localPosition = new Vector3(0f, i + 0.5f, 0f);
            }
        }
    }
}