using Cysharp.Threading.Tasks;
using System;
using System.Collections.Generic;
using UnityEngine;
using UVC.Management;

namespace ChunilENG.Management
{
    public class MachineClickManager : Manager
    {
        public List<Machine> machines = new List<Machine>();
        public Machine currentClickMachine;

        RaycastHit[] hitInfo = new RaycastHit[16];

        RaycastHit hit;

        public event Action<Machine> onLeftClickMachine;
        public event Action onLeftClickArea;

        public LayerMask floorLayers;
        public int hitFloorIndex;

        public override async UniTask Init()
        {
           // machines = ChunilENGSceneMain.Instance.building.GetMachines();
            await UniTask.CompletedTask;
        }

        private void Update()
        {
            RaycastOnClickArea();
            RaycastOnClickMachine();
        }

        private void RaycastOnClickMachine()
        {
            bool leftClick = Input.GetMouseButtonDown(0);

            if (!leftClick)
            {
                return;
            }

            LayerMask exceptionLayer = LayerMask.GetMask("Floor", "Ground");
            LayerMask layerMask = floorLayers & ~exceptionLayer;

            Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
            hitInfo = Physics.RaycastAll(ray, Mathf.Infinity, layerMask);

            if (hitInfo.Length == 0)
                return;

            Array.Sort(hitInfo, (hit1, hit2) => hit1.distance.CompareTo(hit2.distance));
            var hitColider = hitInfo[0].collider;

            hitColider.TryGetComponent<Machine>(out var machine);

            foreach (var floorMachine in machines)
            {
                if(floorMachine == machine)
                {
                    if (leftClick)
                    {
                        onLeftClickMachine?.Invoke(machine);
                    }
                }
            }
        }

        private void RaycastOnClickArea()
        {
            bool leftClick = Input.GetMouseButtonDown(0);

            LayerMask exceptionLayer = LayerMask.GetMask("Machine");
            LayerMask layerMask = floorLayers & ~exceptionLayer;

            var ray = Camera.main.ScreenPointToRay(Input.mousePosition);
            hitInfo = Physics.RaycastAll(ray, Mathf.Infinity, layerMask);

            if (hitInfo.Length == 0)
                return;

            if (leftClick)
            {
                onLeftClickArea?.Invoke();
            }
        }
    }
}