using System;
using System.IO;
using System.Linq;
using System.Windows.Forms;
using System.Collections.Generic;
using System.Drawing;
using System.Threading;
using System.Diagnostics;
using RageCoop.Client.Menus;
using RageCoop.Core;
using GTA;
using GTA.Native;
using GTA.Math;

namespace RageCoop.Client
{
    /// <summary>
    /// Don't use it!
    /// </summary>
    internal class Main : Script
    {

        private bool _gameLoaded = false;
        internal static readonly string CurrentVersion = "V0_5_0";

        internal static int LocalPlayerID=0;

        internal static RelationshipGroup SyncedPedsGroup;

        internal static new Settings Settings = null;

#if !NON_INTERACTIVE
#endif
        internal static Chat MainChat = null;
        internal static Stopwatch Counter = new Stopwatch();
        internal static Core.Logging.Logger Logger = null;
        
        internal static ulong Ticked = 0;
        internal static Scripting.Resources Resources=null;
        private static List<Func<bool>> QueuedActions = new List<Func<bool>>();
        /// <summary>
        /// Don't use it!
        /// </summary>
        public Main()
        {
            Settings = Util.ReadSettings();
            Logger=new Core.Logging.Logger()
            {
                LogPath=$"RageCoop\\RageCoop.Client.log",
                UseConsole=false,
#if DEBUG
                LogLevel = 0,
#else
                LogLevel=Settings.LogLevel,
#endif
            };
            Resources = new Scripting.Resources();
            // Required for some synchronization!
            /*if (Game.Version < GameVersion.v1_0_1290_1_Steam)
            {
                Tick += (object sender, EventArgs e) =>
                {
                    if (Game.IsLoading)
                    {
                        return;
                    }

                    if (!_gameLoaded)
                    {
                        GTA.UI.Notification.Show("~r~Please update your GTA5 to v1.0.1290 or newer!", true);
                        _gameLoaded = true;
                    }
                };
                return;
            }*/
            SyncedPedsGroup=World.AddRelationshipGroup("SYNCPED");
            Game.Player.Character.RelationshipGroup.SetRelationshipBetweenGroups(SyncedPedsGroup, Relationship.Neutral, true);
#if !NON_INTERACTIVE
#endif
            MainChat = new Chat();

            Tick += OnTick;
            Tick += (s,e) => { Scripting.API.Events.InvokeTick(); };
            KeyDown += OnKeyDown;
            Aborted += (object sender, EventArgs e) => CleanUp();
            
            Util.NativeMemory();
            Counter.Restart();
        }
        
#if DEBUG
        private ulong _lastDebugData;
        private int _debugBytesSend;
        private int _debugBytesReceived;
#endif
        private void OnTick(object sender, EventArgs e)
        {
            if (Game.IsLoading)
            {
                return;
            }
            else if (!_gameLoaded && (_gameLoaded = true))
            {
#if !NON_INTERACTIVE
                GTA.UI.Notification.Show(GTA.UI.NotificationIcon.AllPlayersConf, "RAGECOOP","Welcome!", $"Press ~g~{Main.Settings.MenuKey}~s~ to open the menu.");
#endif
            }

#if !NON_INTERACTIVE
            CoopMenu.MenuPool.Process();
#endif
            
            DoQueuedActions();
            if (!Networking.IsOnServer)
            {
                return;
            }
            if (Game.TimeScale!=1)
            {
                Game.TimeScale=1;
            }
            try
            {
                EntityPool.DoSync();
            }
            catch (Exception ex)
            {
                Main.Logger.Error(ex);
            }
            

            MapLoader.LoadAll();

#if DEBUG
            if (Networking.ShowNetworkInfo)
            {
                ulong time = Util.GetTickCount64();
                if (time - _lastDebugData > 1000)
                {
                    _lastDebugData = time;

                    _debugBytesReceived = Networking.Client.Statistics.ReceivedBytes;
                    _debugBytesSend = Networking.Client.Statistics.SentBytes;
                    Networking.Client.Statistics.Reset();
                }

                new LemonUI.Elements.ScaledText(new PointF(Screen.PrimaryScreen.Bounds.Width / 2, 0), $"L: {Networking.Latency * 1000:N0}ms", 0.5f) { Alignment = GTA.UI.Alignment.Center }.Draw();
                new LemonUI.Elements.ScaledText(new PointF(Screen.PrimaryScreen.Bounds.Width / 2, 30), $"R: {Lidgren.Network.NetUtility.ToHumanReadable(_debugBytesReceived)}/s", 0.5f) { Alignment = GTA.UI.Alignment.Center }.Draw();
                new LemonUI.Elements.ScaledText(new PointF(Screen.PrimaryScreen.Bounds.Width / 2, 60), $"S: {Lidgren.Network.NetUtility.ToHumanReadable(_debugBytesSend)}/s", 0.5f) { Alignment = GTA.UI.Alignment.Center }.Draw();
            }
#endif



            MainChat.Tick();
            PlayerList.Tick();
            if (!Scripting.API.Config.EnableAutoRespawn)
            {
                Function.Call(Hash.PAUSE_DEATH_ARREST_RESTART, true);
                Function.Call(Hash.FORCE_GAME_STATE_PLAYING);
                var P = Game.Player.Character;
                if (P.IsDead)
                {
                    Function.Call(Hash.TERMINATE_ALL_SCRIPTS_WITH_THIS_NAME, "respawn_controller");
                    Function.Call(Hash.SET_FADE_OUT_AFTER_DEATH, false);
                    
                    if (P.Health!=1)
                    {
                        P.Health=1;
                        Game.Player.WantedLevel=0;
                        Main.Logger.Debug("Player died.");
                    }
                    GTA.UI.Screen.StopEffects();
                }
                else
                {

                    Function.Call(Hash.DISPLAY_HUD, true);
                }

            }

            Ticked++;
        }
        
        private void OnKeyDown(object sender, KeyEventArgs e)
        {
            if (MainChat.Focused)
            {
                MainChat.OnKeyDown(e.KeyCode);
                return;
            }
            if (Networking.IsOnServer)
            {
                if (Game.IsControlPressed(GTA.Control.FrontendPause))
                {
                    Function.Call(Hash.ACTIVATE_FRONTEND_MENU, Function.Call<int>(Hash.GET_HASH_KEY, "FE_MENU_VERSION_SP_PAUSE"), false, 0);
                    return;
                }
                if (Game.IsControlPressed(GTA.Control.FrontendPauseAlternate)&&Settings.DisableAlternatePause)
                {
                    Function.Call(Hash.ACTIVATE_FRONTEND_MENU, Function.Call<int>(Hash.GET_HASH_KEY, "FE_MENU_VERSION_SP_PAUSE"), false, 0);
                    return;
                }
            }
            if (e.KeyCode == Settings.MenuKey)
            {
                if (CoopMenu.MenuPool.AreAnyVisible)
                {
                    CoopMenu.MenuPool.ForEach<LemonUI.Menus.NativeMenu>(x =>
                    {
                        if (x.Visible)
                        {
                            CoopMenu.LastMenu=x;
                            x.Visible=false;
                        }
                    });
                }
                else
                {
                    CoopMenu.LastMenu.Visible = true;
                }
            }
            else if (Game.IsControlJustPressed(GTA.Control.MultiplayerInfo))
            {
                if (Networking.IsOnServer)
                {
                    ulong currentTimestamp = Util.GetTickCount64();
                    PlayerList.Pressed = (currentTimestamp - PlayerList.Pressed) < 5000 ? (currentTimestamp - 6000) : currentTimestamp;
                }
            }
            else if (Game.IsControlJustPressed(GTA.Control.MpTextChatAll))
            {
                if (Networking.IsOnServer)
                {
                    MainChat.Focused = true;
                }
            }
            else if (e.KeyCode==Settings.PassengerKey)
            {
                var P = Game.Player.Character;
                
                if (!P.IsInVehicle())
                {
                    if (P.IsTaskActive(TaskType.CTaskEnterVehicle))
                    {
                        P.Task.ClearAll();
                    }
                    else
                    {
                        var V = World.GetClosestVehicle(P.Position, 50);

                        if (V!=null)
                        {
                            var seat = P.GetNearestSeat(V);
                            P.Task.EnterVehicle(V, seat);
                        }
                    }
                }
            }
        }
        public static void CleanUp()
        {
            MainChat.Clear();
            EntityPool.Cleanup();
            PlayerList.Cleanup();
            Main.LocalPlayerID=default;

        }

        internal static readonly Dictionary<ulong, byte> CheckNativeHash = new Dictionary<ulong, byte>()
        {
            { 0xD49F9B0955C367DE, 1 }, // Entities
            { 0xEF29A16337FACADB, 1 }, //
            { 0xB4AC7D0CF06BFE8F, 1 }, //
            { 0x9B62392B474F44A0, 1 }, //
            { 0x7DD959874C1FD534, 1 }, //
            { 0xAF35D0D2583051B0, 2 }, // Vehicles
            { 0x63C6CCA8E68AE8C8, 2 }, //
            { 0x509D5878EB39E842, 3 }, // Props
            { 0x9A294B2138ABB884, 3 }, //
            { 0x46818D79B1F7499A, 4 }, // Blips
            { 0x5CDE92C702A8FCE7, 4 }, //
            { 0xBE339365C863BD36, 4 }, //
            { 0x5A039BB0BCA604B6, 4 }, //
            { 0x0134F0835AB6BFCB, 5 }  // Checkpoints
        };
        internal static Dictionary<int, byte> ServerItems = new Dictionary<int, byte>();
        internal static void CleanUpWorld()
        {
            if (ServerItems.Count == 0)
            {
                return;
            }

            lock (ServerItems)
            {
                foreach (KeyValuePair<int, byte> item in ServerItems)
                {
                    try
                    {
                        switch (item.Value)
                        {
                            case 1:
                                World.GetAllEntities().FirstOrDefault(x => x.Handle == item.Key)?.Delete();
                                break;
                            case 2:
                                World.GetAllVehicles().FirstOrDefault(x => x.Handle == item.Key)?.Delete();
                                break;
                            case 3:
                                World.GetAllProps().FirstOrDefault(x => x.Handle == item.Key)?.Delete();
                                break;
                            case 4:
                                Blip blip = new Blip(item.Key);
                                if (blip.Exists())
                                {
                                    blip.Delete();
                                }
                                break;
                            case 5:
                                Checkpoint checkpoint = new Checkpoint(item.Key);
                                if (checkpoint.Exists())
                                {
                                    checkpoint.Delete();
                                }
                                break;
                        }
                    }
                    catch
                    {
                        GTA.UI.Notification.Show("~r~~h~CleanUpWorld() Error");
                        Main.Logger.Error($"CleanUpWorld(): ~r~Item {item.Value} cannot be deleted!");
                    }
                }

                ServerItems.Clear();
            }
        }

        private static void DoQueuedActions()
        {
            lock (QueuedActions)
            {
                foreach (var action in QueuedActions.ToArray())
                {
                    try
                    {
                        if (action())
                        {
                            QueuedActions.Remove(action);
                        }
                    }
                    catch(Exception ex)
                    {
                        Logger.Error(ex);
                        QueuedActions.Remove(action);
                    }
                }
            }
        }

        /// <summary>
        /// Queue an action  to be executed on next tick, allowing you to call scripting API from another thread.
        /// </summary>
        /// <param name="a"> The action to be executed, must return a bool indicating whether the action cane be removed after execution.</param>
        internal static void QueueAction(Func<bool> a)
        {
            lock (QueuedActions)
            {
                QueuedActions.Add(a);
            }
        }
        internal static void QueueAction(Action a)
        {
            lock (QueuedActions)
            {
                QueuedActions.Add(() => { a(); return true; }) ;
            }
        }
        /// <summary>
        /// Clears all queued actions
        /// </summary>
        internal static void ClearQueuedActions()
        {
            lock (QueuedActions) { QueuedActions.Clear(); }
        }


    }
}