using Photon.Pun;
using Photon.Pun.Demo.PunBasics;
using UnityEngine;

namespace cc.ivanli.pun01
{
    public class PlayerManager : MonoBehaviourPunCallbacks, IPunObservable
    {
        [Tooltip("The Beams GameObject to control")]
        [SerializeField]
        private GameObject beams;
        //True, when the user is firing
        private bool IsFiring;

        [Tooltip("The current Health of our player")]
        public float Health = 1f;

        [Tooltip("The local player instance. Use this to know if the local player is represented in the Scene")]
        public static GameObject LocalPlayerInstance;

        [Tooltip("The Player's UI GameObject Prefab")]
        [SerializeField]
        public GameObject PlayerUiPrefab;

        void Awake()
        {
            if (beams == null)
            {
                Debug.LogError("<Color=Red><a>Missing</a></Color> Beams Reference.", this);
            }
            else
            {
                beams.SetActive(false);
            }

            if (photonView.IsMine)
            {
                PlayerManager.LocalPlayerInstance = this.gameObject;
            }
            DontDestroyOnLoad(this.gameObject);
        }

        void Start()
        {
            CameraWork _cameraWork = this.gameObject.GetComponent<CameraWork>();
            UnityEngine.SceneManagement.SceneManager.sceneLoaded += OnSceneLoaded;


            if (_cameraWork != null)
            {
                if (photonView.IsMine)
                {
                    _cameraWork.OnStartFollowing();
                }
            }
            else
            {
                Debug.LogError("<Color=Red><a>Missing</a></Color> CameraWork Component on playerPrefab.", this);
            }

            if (PlayerUiPrefab != null)
            {
                GameObject _uiGo = Instantiate(PlayerUiPrefab);
                _uiGo.SendMessage("SetTarget", this, SendMessageOptions.RequireReceiver);
            }
            else
            {
                Debug.LogWarning("<Color=Red><a>Missing</a></Color> PlayerUiPrefab reference on player Prefab.", this);
            }
        }

        void Update()
        {

            if (photonView.IsMine)
            {
                ProcessInputs();
                if (Health <= 0f)
                {
                    GameManager.Instance.LeaveRoom();
                }
            }

            // trigger Beams active state
            if (beams != null && IsFiring != beams.activeInHierarchy)
            {
                beams.SetActive(IsFiring);
            }
        }

        void ProcessInputs()
        {
            if (Input.GetButtonDown("Fire1"))
            {
                if (!IsFiring)
                {
                    IsFiring = true;
                }
            }
            if (Input.GetButtonUp("Fire1"))
            {
                if (IsFiring)
                {
                    IsFiring = false;
                }
            }
        }

        void OnTriggerEnter(Collider other)
        {
            if (!photonView.IsMine)
            {
                return;
            }
            // We are only interested in Beamers
            // we should be using tags but for the sake of distribution, let's simply check by name.
            if (!other.name.Contains("Beam"))
            {
                return;
            }
            Health -= 0.1f;
        }

        void OnTriggerStay(Collider other)
        {
            // we dont' do anything if we are not the local player.
            if (!photonView.IsMine)
            {
                return;
            }
            // We are only interested in Beamers
            // we should be using tags but for the sake of distribution, let's simply check by name.
            if (!other.name.Contains("Beam"))
            {
                return;
            }
            // we slowly affect health when beam is constantly hitting us, so player has to move to prevent death.
            Health -= 0.1f * Time.deltaTime;
        }

        public void OnPhotonSerializeView(PhotonStream stream, PhotonMessageInfo info)
        {
            if (stream.IsWriting)
            {
                // We own this player: send the others our data
                stream.SendNext(IsFiring);
                stream.SendNext(Health);
            }
            else
            {
                // Network player, receive data
                IsFiring = (bool)stream.ReceiveNext();
                Health = (float)stream.ReceiveNext();
            }
        }
        void OnSceneLoaded(UnityEngine.SceneManagement.Scene scene, UnityEngine.SceneManagement.LoadSceneMode loadingMode)
        {
            this.CalledOnLevelWasLoaded(scene.buildIndex);
        }
        void OnLevelWasLoaded(int level)
        {
            this.CalledOnLevelWasLoaded(level);
        }
        void CalledOnLevelWasLoaded(int level)
        {
            // check if we are outside the Arena and if it's the case, spawn around the center of the arena in a safe zone
            if (!Physics.Raycast(transform.position, -Vector3.up, 5f))
            {
                transform.position = new Vector3(0f, 5f, 0f);
            }
            GameObject _uiGo = Instantiate(PlayerUiPrefab);
            _uiGo.SendMessage("SetTarget", this, SendMessageOptions.RequireReceiver);
        }
        public override void OnDisable()
        {
            // Always call the base to remove callbacks
            base.OnDisable();
            UnityEngine.SceneManagement.SceneManager.sceneLoaded -= OnSceneLoaded;
        }
    }
}