using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UIElements;
using UnityEngine.InputSystem;
using BITKit;
using BITKit.UX;
using BITKit.Entities;
using BITKit.Entities.Player;
using BITKit.Steamwork;

namespace BITFALL.UX
{
    public class UXHud : UIToolKitPanel, ISelectableCallback
    {
        [Header(Constant.Header.Providers)]
        [SerializeReference, SubclassSelector] private INetClient netClient;
        [SerializeReference, SubclassSelector] private INetProvider netProvider;
        [SerializeReference, SubclassSelector]  private IPlayerService playerService;
        [SerializeReference, SubclassSelector] private ISteamService steamService;

        [Header(Constant.Header.Components)]
        [SerializeField] private UXImage crosshairImage;
        [SerializeField] private UXLabel playerNameLabel;
        [SerializeField] private UXImage playerAvatarImage;
        [SerializeField] private UXBar healthBar;
        
        [Header(Constant.Header.Input)]
        public InputActionReference inventoryAction;
        public InputActionReference returnAction;
        public InputActionGroup inputActionGroup = new();
        public UXLabel nameLabel;
        private IHealth _health;
        protected IEntityMovement _entityMovement;
        protected override void Awake()
        {
            base.Awake();
            nameLabel.SetActive(false);
            inputActionGroup.RegisterCallback(returnAction, OnReturn);
            inputActionGroup.RegisterCallback(inventoryAction, OnInventory);

            netClient.OnConnected += OnConnected;
            playerService.OnPlayerInitialized += OnPlayerInitializedLocalPlayer;
            
            
        }

        private void OnDestroy()
        {
            netClient.OnConnected -= OnConnected;
            playerService.OnPlayerInitialized -= OnPlayerInitializedLocalPlayer;
        }
        protected override void OnEntryOrExit(bool isEntry)
        {
            inputActionGroup.RegisterCallback(inventoryAction, OnInventory);
            inputActionGroup.allowInput.SetElements(this, isEntry);
        }
        public void OnActive(ISelectable selectable)
        {
        }
        public void OnHover(ISelectable selectable)
        {
            if (!selectable.GetTransform().TryGetComponent<IDescription>(out var description)) return;
            nameLabel.SetActive(true);
            nameLabel.Set(description.Name);
        }
        public void OnInactive(ISelectable selectable)
        {
            nameLabel.SetActive(false);
        }
        private void OnConnected()
        {
            UXService.Entry<UXHud>();
        }
        private async void OnPlayerInitializedLocalPlayer(IEntity entity)
        {
            entity.RegisterCallback<ISelectableCallback>(this);
            _health = entity.Get<IHealth>();
            _entityMovement = entity.Get<IEntityMovement>();
            _health.OnSetAlive += OnSetAlive;
            _health.OnSetHealthPoint += OnSetHP;
            
            if (!steamService.IsInitialized) return;
            playerNameLabel.Set(steamService.Name);
            var avatar = await steamService.GetAvatarAsync(cancellationToken);
            playerAvatarImage.SetTexture(avatar);
        }
        private void OnInventory(InputAction.CallbackContext context)
        {
            if(playerService.LocalPlayer is null) return;
            if(_health.IsAlive is false) return;
            if(context.JustPressed())
                UXService.Entry<UXInventory>();
        }

        private void LateUpdate()
        {
            if (playerService.LocalPlayer is null) return;
            crosshairImage.SetPosition(_entityMovement.ViewCenter + _entityMovement.ViewRotation * Vector3.forward);
        }

        private static void OnReturn(InputAction.CallbackContext context)
        {
            if (context.JustPressed())
                UXService.Entry<Menu>();
        }

        private void OnSetAlive(bool alive)
        {
            if (alive is false)
            {
                Entry();
            }
        }

        private void OnSetHP(int hp)
        {
            healthBar.Set(hp);
        }
    }
}