using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using GTA;
using GTA.Math;
using RageCoop.Core;
using GTA.Native;
using System.Threading;

namespace RageCoop.Client { 
    internal static class SyncEvents
    {
        #region TRIGGER
        public static void TriggerPedKilled(SyncedPed victim)
        {
            Networking.Send(new Packets.PedKilled() { VictimID=victim.ID},ConnectionChannel.SyncEvents);
        }

        public static void TriggerEnteringVehicle(SyncedPed c,SyncedVehicle veh, VehicleSeat seat)
        {
            Networking.
            Send(new Packets.EnteringVehicle()
            {
                PedID=c.ID,
                VehicleID= veh.ID,
                VehicleSeat=(short)seat,
            }, ConnectionChannel.SyncEvents);
        }

        public static void TriggerEnteredVehicle(SyncedPed c, SyncedVehicle veh, VehicleSeat seat)
        {
            if (seat==VehicleSeat.Driver)
            {
                veh.OwnerID=Main.LocalPlayerID;
                veh.LastSynced=Main.Ticked;
                TriggerChangeOwner(veh, c.ID);
            }
            Networking.Send(new Packets.EnteredVehicle()
            {
                VehicleSeat=(short)seat,
                PedID=c.ID,
                VehicleID=veh.ID
            },ConnectionChannel.SyncEvents);
        }

        public static void TriggerChangeOwner(SyncedVehicle c, int newOwnerID)
        {

            Networking.Send(new Packets.OwnerChanged()
            {
                ID= c.ID,
                NewOwnerID= newOwnerID,
            }, ConnectionChannel.SyncEvents);

        }

        public static void TriggerBulletShot(uint hash,SyncedPed owner,Vector3 impactPosition)
        {
            // Main.Logger.Trace($"bullet shot:{(WeaponHash)hash}");


            var start = owner.MainPed.GetMuzzlePosition();
            if (owner.MainPed.IsOnTurretSeat()) { start=owner.MainPed.Bones[Bone.SkelHead].Position; }
            if (start.DistanceTo(impactPosition)>10)
            {
                // Reduce latency
                start=impactPosition-(impactPosition-start).Normalized*10;
            }
            Networking.SendBulletShot(start, impactPosition, hash, owner.ID);
        }
        public static void TriggerLeaveVehicle(int id)
        {
            Networking.
            Send(new Packets.LeaveVehicle()
            {
                ID=id
            }, ConnectionChannel.SyncEvents);
        }

        public static void TriggerVehBulletShot(uint hash, Vehicle veh, SyncedPed owner)
        {
            // ANNIHL
            if (veh.Model.Hash==837858166)
            {
                Networking.SendBulletShot(veh.Bones[35].Position, veh.Bones[35].Position+veh.Bones[35].ForwardVector,hash,owner.ID);
                Networking.SendBulletShot(veh.Bones[36].Position, veh.Bones[36].Position+veh.Bones[36].ForwardVector,hash, owner.ID);
                Networking.SendBulletShot(veh.Bones[37].Position, veh.Bones[37].Position+veh.Bones[37].ForwardVector,hash, owner.ID);
                Networking.SendBulletShot(veh.Bones[38].Position, veh.Bones[38].Position+veh.Bones[38].ForwardVector,hash, owner.ID);
                return;
            }

            var info = veh.GetMuzzleInfo();
            if (info==null) { Main.Logger.Warning($"Failed to get muzzle info for vehicle:{veh.DisplayName}");return; }
            Networking.SendBulletShot(info.Position,info.Position+info.ForawardVector,hash,owner.ID);
        }
        public static void TriggerNozzleTransform(int vehID,bool hover)
        {
            Networking.Send(new Packets.NozzleTransform() { VehicleID=vehID, Hover=hover }, ConnectionChannel.SyncEvents);
        }

        #endregion

        #region HANDLE

        public static ParticleEffectAsset CorePFXAsset = new ParticleEffectAsset("core");

        static WeaponAsset _weaponAsset = default;
        static uint _lastWeaponHash;

        private static void HandleLeaveVehicle(Packets.LeaveVehicle p)
        {
            var ped = EntityPool.GetPedByID(p.ID);
            var flag = LeaveVehicleFlags.None;
            if (ped.MainPed?.CurrentVehicle==null) { return; }
            // Bail out
            if (ped.MainPed.CurrentVehicle.Speed>5) { flag|=LeaveVehicleFlags.BailOut;}
            ped.PauseUpdate((ulong)Game.FPS*2);
            ped.MainPed.Task.LeaveVehicle(flag) ;
        }
        private static void HandlePedKilled(Packets.PedKilled p)
        {
            EntityPool.GetPedByID(p.VictimID)?.MainPed?.Kill();
        }
        private static void HandleEnteringVehicle(SyncedPed c, SyncedVehicle veh, VehicleSeat seat)
        {
            c.MainPed?.Task.EnterVehicle(veh.MainVehicle, seat,-1,2,EnterVehicleFlags.WarpToDoor|EnterVehicleFlags.AllowJacking);
        }
        private static void HandleEnteredVehicle(int pedId, int vehId, VehicleSeat seat)
        {
            var v = EntityPool.GetVehicleByID(vehId);
            var p = EntityPool.GetPedByID(pedId)?.MainPed;
            if (v==null||p==null) { return; }
            if (!v.MainVehicle.IsSeatFree(seat))
            {
                if (v.MainVehicle.GetPedOnSeat(seat)!=p)
                {
                    v.MainVehicle.GetPedOnSeat(seat).Task.WarpOutOfVehicle(v.MainVehicle);
                }
            }
            p.SetIntoVehicle(v.MainVehicle, seat);
        }
        private static void HandleOwnerChanged(Packets.OwnerChanged p)
        {
            var v = EntityPool.GetVehicleByID(p.ID);
            if (v==null) { return; }
            v.OwnerID=p.NewOwnerID;

            v.ModelHash=v.MainVehicle.Model;
            v.LastSynced=Main.Ticked;
            // So this vehicle doesn's get re-spawned
        }
        private static void HandleNozzleTransform(Packets.NozzleTransform p)
        {
            EntityPool.GetVehicleByID(p.VehicleID)?.MainVehicle?.SetNozzleAngel(p.Hover ? 1 : 0);
        }
        private static void HandleBulletShot(Vector3 start, Vector3 end, uint weaponHash, int ownerID)
        {
            switch (weaponHash)
            {
                // Minigun, not working for some reason
                case (uint)WeaponHash.Minigun:
                    weaponHash=1176362416;
                    break;

                // Valkyire, not working for some reason
                case 2756787765:
                    weaponHash=1176362416;
                    break;

                // Tampa3, not working for some reason
                case 3670375085:
                    weaponHash=1176362416;
                    break;

                // Ruiner2, not working for some reason
                case 50118905:
                    weaponHash=1176362416;
                    break;

                // SAVAGE
                case 1638077257:
                    weaponHash=(uint)VehicleWeaponHash.PlayerLazer;
                    break;

                case (uint)VehicleWeaponHash.PlayerBuzzard:
                    weaponHash=1176362416;
                    break ;
            }

            var p = EntityPool.GetPedByID(ownerID)?.MainPed;
            if (p == null) { p=Game.Player.Character; Main.Logger.Warning("Failed to find owner for bullet"); }
            if (!CorePFXAsset.IsLoaded) { CorePFXAsset.Request(); }
            if (_lastWeaponHash!=weaponHash)
            {
                _weaponAsset.MarkAsNoLongerNeeded();
                _weaponAsset=new WeaponAsset(weaponHash);
                _lastWeaponHash=weaponHash;
            }
            if (!_weaponAsset.IsLoaded) { _weaponAsset.Request(); }
            World.ShootBullet(start, end, p, _weaponAsset, (int)p.GetWeaponDamage(weaponHash));
            Prop w;
            if(((w = p.Weapons.CurrentWeaponObject) != null)&&(p.VehicleWeapon==VehicleWeaponHash.Invalid))
            {
                if (p.Weapons.Current.Components.GetSuppressorComponent().Active)
                {
                    World.CreateParticleEffectNonLooped(CorePFXAsset, "muz_pistol_silencer", p.GetMuzzlePosition(), w.Rotation, 1);
                }
                else
                {
                    World.CreateParticleEffectNonLooped(CorePFXAsset, "muz_assault_rifle", p.GetMuzzlePosition(), w.Rotation, 1);
                }

            }
            else if (p.VehicleWeapon!=VehicleWeaponHash.Invalid)
            {
                if (p.VehicleWeapon==VehicleWeaponHash.Tank)
                {
                    World.CreateParticleEffectNonLooped(CorePFXAsset, "muz_tank", p.CurrentVehicle.GetMuzzleInfo().Position, p.CurrentVehicle.Bones[35].ForwardVector.ToEulerRotation(p.CurrentVehicle.Bones[35].UpVector), 1);
                }
            }
        }
        public static void HandleEvent(PacketType type,byte[] data)
        {
            switch (type)
            {
                case PacketType.BulletShot:
                    {
                        Packets.BulletShot p = new Packets.BulletShot();
                        p.Unpack(data);
                        HandleBulletShot(p.StartPosition, p.EndPosition, p.WeaponHash, p.OwnerID);
                        break;
                    }
                case PacketType.EnteringVehicle:
                    {
                        Packets.EnteringVehicle p = new Packets.EnteringVehicle();
                        p.Unpack(data);
                        HandleEnteringVehicle(EntityPool.GetPedByID(p.PedID), EntityPool.GetVehicleByID(p.VehicleID), (VehicleSeat)p.VehicleSeat);


                    }
                    break;
                case PacketType.LeaveVehicle:
                    {
                        Packets.LeaveVehicle packet = new Packets.LeaveVehicle();
                        packet.Unpack(data);
                        HandleLeaveVehicle(packet);
                    }
                    break;
                case PacketType.OwnerChanged:
                    {
                        Packets.OwnerChanged packet = new Packets.OwnerChanged();
                        packet.Unpack(data);
                        HandleOwnerChanged(packet);
                    }
                    break;
                case PacketType.PedKilled:
                    {
                        var packet = new Packets.PedKilled();
                        packet.Unpack(data);
                        HandlePedKilled(packet);
                    }
                    break;
                case PacketType.EnteredVehicle:
                    {
                        var packet = new Packets.EnteredVehicle();
                        packet.Unpack(data);
                        HandleEnteredVehicle(packet.PedID,packet.VehicleID,(VehicleSeat)packet.VehicleSeat);
                        break;
                    }
                case PacketType.NozzleTransform:
                    {
                        var packet = new Packets.NozzleTransform();
                        packet.Unpack(data);
                        HandleNozzleTransform(packet);
                        break;
                    }
            }
        }

        #endregion

        #region CHECK EVENTS


        public static void Check(SyncedPed c)
        {
            Ped subject = c.MainPed;

            // Check bullets
            if (subject.IsShooting)
            {
                if (!subject.IsUsingProjectileWeapon())
                {
                    int i = 0;
                    Func<bool> getBulletImpact = (() =>
                    {
                        Vector3 endPos = subject.LastWeaponImpactPosition;
                        if (endPos==default)
                        {
                            if (i>5)
                            {
                                endPos=subject.GetAimCoord();
                                if (subject.IsInVehicle() && subject.VehicleWeapon!=VehicleWeaponHash.Invalid)
                                {
                                    if (subject.IsOnTurretSeat())
                                    {
                                        TriggerBulletShot((uint)subject.VehicleWeapon, subject.GetSyncEntity(), endPos);
                                    }
                                    else
                                    {
                                        TriggerVehBulletShot((uint)subject.VehicleWeapon, subject.CurrentVehicle,c);
                                    }
                                }
                                else
                                {
                                    TriggerBulletShot((uint)subject.Weapons.Current.Hash, subject.GetSyncEntity(), endPos);
                                }
                                return true;
                            }
                            i++;
                            return false;
                        }
                        else
                        {
                            if (subject.IsInVehicle() && subject.VehicleWeapon!=VehicleWeaponHash.Invalid)
                            {
                                if (subject.IsOnTurretSeat())
                                {
                                    TriggerBulletShot((uint)subject.VehicleWeapon, subject.GetSyncEntity(), endPos);
                                }
                                else
                                {
                                    TriggerVehBulletShot((uint)subject.VehicleWeapon, subject.CurrentVehicle,c);
                                }
                            }
                            else
                            {
                                TriggerBulletShot((uint)subject.Weapons.Current.Hash, subject.GetSyncEntity(), endPos);
                            }
                            return true;
                        }


                    });
                    if (!getBulletImpact())
                    {
                        Main.QueueAction(getBulletImpact);
                    }
                }
                else if (subject.VehicleWeapon==VehicleWeaponHash.Tank && subject.LastWeaponImpactPosition!=default)
                {
                    TriggerBulletShot((uint)VehicleWeaponHash.Tank, subject.GetSyncEntity(),subject.LastWeaponImpactPosition);
                }
                
            }
            

            // Vehicles
            var g = subject.IsGettingIntoVehicle;
            if ( g && (!c._lastEnteringVehicle))
            { 
                var v = subject.VehicleTryingToEnter.GetSyncEntity();
                TriggerEnteringVehicle(c, v, subject.GetSeatTryingToEnter());
            }
            var currentSitting= subject.IsSittingInVehicle();
            if (c._lastSittingInVehicle)
            {
                if (!currentSitting)
                {
                    var veh = subject.CurrentVehicle;
                    if (veh!=null)
                    {
                        var v = veh.GetSyncEntity();
                        TriggerLeaveVehicle(c.ID);
                    }
                }
            }
            else if (currentSitting)
            {
                TriggerEnteredVehicle(c, subject.CurrentVehicle.GetSyncEntity(), subject.SeatIndex);
            }
            c._lastSittingInVehicle=currentSitting;
            c._lastEnteringVehicle=g;
        }
        
        public static void Check(SyncedVehicle v)
        {
            if (v.MainVehicle!=null&&v.MainVehicle.HasNozzle())
            {
                if((v.LastNozzleAngle==1) && (v.MainVehicle.GetNozzleAngel()!=1))
                {
                    TriggerNozzleTransform(v.ID,false);
                }
                else if((v.LastNozzleAngle==0) && (v.MainVehicle.GetNozzleAngel()!=0))
                {
                    TriggerNozzleTransform(v.ID,true);
                }
                v.LastNozzleAngle=v.MainVehicle.GetNozzleAngel();
            }
        }
        #endregion
    }
}