using System;
using System.Collections.Generic;
using OWML.ModHelper.Events;
using QSB.Messaging;
using UnityEngine;
using UnityEngine.Networking;

namespace QSB.Animation
{
    public class AnimationSync : NetworkBehaviour
    {
        private Animator _anim;
        private Animator _bodyAnim;
        private NetworkAnimator _netAnim;
        private MessageHandler<AnimTriggerMessage> _triggerHandler;

        private RuntimeAnimatorController _suitedAnimController;
        private AnimatorOverrideController _unsuitedAnimController;
        private GameObject _suitedGraphics;
        private GameObject _unsuitedGraphics;

        private static readonly Dictionary<uint, AnimationSync> PlayerAnimSyncs = new Dictionary<uint, AnimationSync>();

        private void InitCommon(Transform body)
        {
            _anim = gameObject.AddComponent<Animator>();
            _netAnim = gameObject.AddComponent<NetworkAnimator>();
            _netAnim.animator = _anim;

            _bodyAnim = body.GetComponent<Animator>();
            var mirror = body.gameObject.AddComponent<AnimatorMirror>();
            if (isLocalPlayer)
            {
                mirror.Init(_bodyAnim, _anim);
            }
            else
            {
                mirror.Init(_anim, _bodyAnim);
            }

            PlayerAnimSyncs.Add(netId.Value, this);

            for (var i = 0; i < _anim.parameterCount; i++)
            {
                _netAnim.SetParameterAutoSend(i, true);
            }
        }

        public void InitLocal(Transform body)
        {
            InitCommon(body);

            _triggerHandler = new MessageHandler<AnimTriggerMessage>();
            _triggerHandler.OnServerReceiveMessage += OnServerReceiveMessage;
            _triggerHandler.OnClientReceiveMessage += OnClientReceiveMessage;

            var playerController = body.parent.GetComponent<PlayerCharacterController>();
            playerController.OnJump += () => SendTrigger(AnimTrigger.Jump);
            playerController.OnBecomeGrounded += () => SendTrigger(AnimTrigger.Grounded);
            playerController.OnBecomeUngrounded += () => SendTrigger(AnimTrigger.Ungrounded);

            GlobalMessenger.AddListener("SuitUp", () => SendTrigger(AnimTrigger.SuitUp));
            GlobalMessenger.AddListener("RemoveSuit", () => SendTrigger(AnimTrigger.SuitDown));
        }

        public void InitRemote(Transform body)
        {
            InitCommon(body);

            _suitedAnimController = _bodyAnim.runtimeAnimatorController;

            var playerAnimController = body.GetComponent<PlayerAnimController>();
            playerAnimController.enabled = false;
            _unsuitedAnimController = playerAnimController.GetValue<AnimatorOverrideController>("_unsuitedAnimOverride");
            _suitedGraphics = playerAnimController.GetValue<GameObject>("_suitedGroup");
            _unsuitedGraphics = playerAnimController.GetValue<GameObject>("_unsuitedGroup");

            playerAnimController.SetValue("_suitedGroup", new GameObject());
            playerAnimController.SetValue("_unsuitedGroup", new GameObject());
            playerAnimController.SetValue("_baseAnimController", null);
            playerAnimController.SetValue("_unsuitedAnimOverride", null);

            body.Find("player_mesh_noSuit:Traveller_HEA_Player/player_mesh_noSuit:Player_Head").gameObject.layer = 0;
            body.Find("Traveller_Mesh_v01:Traveller_Geo/Traveller_Mesh_v01:PlayerSuit_Helmet").gameObject.layer = 0;
        }

        private void SendTrigger(AnimTrigger trigger)
        {
            var message = new AnimTriggerMessage
            {
                SenderId = netId.Value,
                TriggerId = (short)trigger
            };
            if (isServer)
            {
                _triggerHandler.SendToAll(message);
            }
            else
            {
                _triggerHandler.SendToServer(message);
            }
        }

        private void OnServerReceiveMessage(AnimTriggerMessage message)
        {
            _triggerHandler.SendToAll(message);
        }

        private void OnClientReceiveMessage(AnimTriggerMessage message)
        {
            if (PlayerAnimSyncs.TryGetValue(message.SenderId, out var animSync) && animSync != this)
            {
                animSync.HandleTrigger((AnimTrigger)message.TriggerId);
            }
        }

        private void HandleTrigger(AnimTrigger trigger)
        {
            switch (trigger)
            {
                case AnimTrigger.Jump:
                case AnimTrigger.Grounded:
                case AnimTrigger.Ungrounded:
                    _bodyAnim.SetTrigger(trigger.ToString());
                    break;
                case AnimTrigger.SuitUp:
                    _bodyAnim.runtimeAnimatorController = _suitedAnimController;
                    _unsuitedGraphics.SetActive(false);
                    _suitedGraphics.SetActive(true);
                    break;
                case AnimTrigger.SuitDown:
                    _bodyAnim.runtimeAnimatorController = _unsuitedAnimController;
                    _unsuitedGraphics.SetActive(true);
                    _suitedGraphics.SetActive(false);
                    break;
                default:
                    throw new ArgumentOutOfRangeException(nameof(trigger), trigger, null);
            }
        }

    }
}