using System;
using System.Collections.Generic;
using System.Text;
using ISXWoW;
using LavishVMAPI; 
using LavishNavAPI.Regions;
using System.IO;
using System.Threading;

namespace Bytebot
{
    public class Mapper
    {
        const int MaximumBoxSize = 15;

        private Thread _thread;
        private string mapfolder = "c:/bytebot";

        #region Constructor
        public Mapper()
        {
            Initialize();
            _thread = new Thread(new ThreadStart(Worker));
            _thread.Name = "Mapper";
            _thread.IsBackground = true;
            _thread.Start();
        }
        #endregion

        #region Destructor
        ~Mapper()
        {
        }
        #endregion Destructor

        #region Private methods
        private void Initialize()
        {
            Bytebot.Global.Debug("Initializing lavish nav.");
            Bytebot.Global.Nav.Tree.Clear();
            Bytebot.Global.Nav.Tree.AddUniverse("Azeroth", RegionFlags.Unique);

            if (!File.Exists(string.Format("{0}/azeroth.xml", mapfolder)))
            {
                Bytebot.Global.Debug(string.Format("{0}/azeroth.xml not found, generating continents and zones.", mapfolder));
                Bytebot.Global.Nav.Tree.FindRegion("Azeroth").AddUniverse("Instance", RegionFlags.Unique | RegionFlags.CoordinateSystem);

                List<string> Continents = Bytebot.Global.WoW.WoWScript("GetMapContinents()");
                for (int i = 0; i < Continents.Count; i++)
                {
                    Bytebot.Global.Nav.Tree.FindRegion("Azeroth").AddUniverse(Continents[i], RegionFlags.Unique | RegionFlags.CoordinateSystem);
                    List<string> Zones = Bytebot.Global.WoW.WoWScript("GetMapZones(" + (i + 1).ToString() + ")");
                    for (int zi = 0; zi < Zones.Count; zi++)
                    {
                        Bytebot.Global.Nav.Tree.FindRegion("Azeroth").FindRegion(Continents[i]).AddUniverse(Zones[zi], RegionFlags.Unique);
                    }
                }
            }
            else
            {
                Bytebot.Global.Debug(string.Format("{0}/azeroth.xml found, loading.", mapfolder));
                Bytebot.Global.Nav.Tree.FindRegion("Azeroth").ImportXML(string.Format("{0}/azeroth.xml", mapfolder));
            }
        }

        // Threaded loop to plot out points if needed
        private static void Worker() 
        {
            do
            {
                Frame.Lock();
                try
                {
                    if (Bytebot.Global.WoW.Me.IsValid && !Bytebot.Global.WoW.Me.Flying)
                    {
                        try
                        {
                            if (!Bytebot.Global.Map.IsMapped())
                            {
                                Bytebot.Global.Map.PlotBox();
                            }
                        }
                        catch (Exception ex)
                        {
                            Bytebot.Global.Debug("Caught exception in Mapper thread: " + ex.Message);
                        }
                    }
                }
                finally
                {
                    Frame.Unlock();
                }
                Thread.Sleep(100);
            }
            while (true);
        }
        #endregion

        #region Public methods
        public void Save()
        {
            Bytebot.Global.Nav.Tree.FindRegion("Azeroth").ExportXML(string.Format("{0}/azeroth.xml", mapfolder));
        }

        public bool IsMapped()
        {
            LavishNavAPI.Regions.Region Container = Zone.BestContainer(Bytebot.Global.WoW.Me.X, Bytebot.Global.WoW.Me.Y, Bytebot.Global.WoW.Me.Z + 0.3);

            if (Container != null && Container.Type != "Universe")
            {
                return true;
            }
            return false;
        }

        public void PlotBox()
        {
            string RegionName;
            int Degrees = 0;
            double Distance = (MaximumBoxSize / 2) + 5; // To compensate for the corners of the square
            double X1, X2, Y1, Y2, Z1, Z2;
            LavishScriptAPI.Point3f Location = Bytebot.Global.WoW.Me.Location;
            LavishScriptAPI.Point3f CollisionPoint;
            double X, Y;


            Z1 = Location.Z;
            Z2 = Location.Z;
            do
            {
                X = Location.X + (MaximumBoxSize / 2) * Math.Cos(Degrees);
                Y = Location.Y - (MaximumBoxSize / 2) * Math.Sin(Degrees);

                CollisionPoint = Bytebot.Global.WoW.IsPathObstructed(Location.X,Location.Y,Location.Z,X,Y,Location.Z);
                if (CollisionPoint != null)
                {
                    if (Bytebot.Global.Distance(Location.X, Location.Y, Location.Z, CollisionPoint.X, CollisionPoint.Y, Location.Z) < Distance)
                    {
                        Distance = Bytebot.Global.Distance(Location.X, Location.Y, Location.Z, CollisionPoint.X, CollisionPoint.Y, Location.Z);
                    }
                }

                Degrees = Degrees + 30;
            }
            while (Degrees <= 360);

            if (Distance > (MaximumBoxSize / 2))
            {
                Distance = (MaximumBoxSize / 2);
            }

            X1 = Location.X - Distance;
            Y1 = Location.Y - Distance;
            X2 = Location.X + Distance;
            Y2 = Location.Y + Distance;
            Z1 = Location.Z - 0.3;
            Z2 = Location.Z + 1.3;

            // Z handling is terrible but it's there. Improve when time.

            RegionName = string.Format("R{0}",Zone.ChildCount);
            Zone.AddBox(RegionName, X1, X2, Y1, Y2, Z1, Z2, 0);

            // Done plotting connect them
            List<LavishNavAPI.Regions.Region> SurroundingRegions;
            LavishNavAPI.Regions.Region NewRegion;
            int Connections = 0;

            SurroundingRegions = Continent.DescendantsWithin(Location.X, Location.Y, Location.Z, MaximumBoxSize * 2);
            if (SurroundingRegions != null)
            {
                NewRegion = Zone.FindRegion(RegionName);
                for (int i = 0; i < SurroundingRegions.Count; i++)
                {
                    if (NewRegion.ID != SurroundingRegions[i].ID && Connections < 10)
                    {
                        Box NewBox = new Box(NewRegion);
                        Box SurroundingBox = new Box(SurroundingRegions[i]);

                        if (!Bytebot.Global.WoW.Me.IsPathObstructed(NewBox.X1,NewBox.Y1,NewBox.Z1,999,SurroundingBox.X1,SurroundingBox.Y1,SurroundingBox.Z1) 
                         && !Bytebot.Global.WoW.Me.IsPathObstructed(NewBox.X1,NewBox.Y2,NewBox.Z1,999,SurroundingBox.X1,SurroundingBox.Y2,SurroundingBox.Z1) 
                         && !Bytebot.Global.WoW.Me.IsPathObstructed(NewBox.X2,NewBox.Y1,NewBox.Z1,999,SurroundingBox.X2,SurroundingBox.Y1,SurroundingBox.Z1) 
                         && !Bytebot.Global.WoW.Me.IsPathObstructed(NewBox.X2,NewBox.Y2,NewBox.Z1,999,SurroundingBox.X2,SurroundingBox.Y2,SurroundingBox.Z1))
                        {
                            NewRegion.Connect(SurroundingRegions[i].ID);
                            Connections++;
                        }

                        if (!Bytebot.Global.WoW.Me.IsPathObstructed(SurroundingBox.X1, SurroundingBox.Y1, SurroundingBox.Z1, 999, NewBox.X1, NewBox.Y1, NewBox.Z1)
                         && !Bytebot.Global.WoW.Me.IsPathObstructed(SurroundingBox.X1, SurroundingBox.Y2, SurroundingBox.Z1, 999, NewBox.X1, NewBox.Y2, NewBox.Z1)
                         && !Bytebot.Global.WoW.Me.IsPathObstructed(SurroundingBox.X2, SurroundingBox.Y1, SurroundingBox.Z1, 999, NewBox.X2, NewBox.Y1, NewBox.Z1)
                         && !Bytebot.Global.WoW.Me.IsPathObstructed(SurroundingBox.X2, SurroundingBox.Y2, SurroundingBox.Z1, 999, NewBox.X2, NewBox.Y2, NewBox.Z1))
                        {
                            SurroundingRegions[i].Connect(NewRegion.ID);
                            Connections++;
                        }
                    }
                }
            }

            if (Connections == 0)
            {
                Bytebot.Global.Debug(string.Format("Critical: {0} has no connections",RegionName));
            }

            Bytebot.Global.Debug(string.Format("Added: {0} Size: {1} Connections: {2}", RegionName, (Distance * 2), Connections));
            Save();
        }
        #endregion

        #region Properties

        public string SubZone
        {
            get
            {
                string _subzonetext = Bytebot.Global.WoW.WoWScript("GetSubZoneText()")[0].ToString();
                return _subzonetext;
            }
        }

        public LavishNavAPI.Regions.Region Zone
        {
            get 
            {
                LavishNavAPI.Regions.Region _zone;
                string _zonetext = Bytebot.Global.WoW.WoWScript("GetRealZoneText()")[0].ToString();
                _zone =  this.Continent.FindRegion(_zonetext);
                if (_zone.IsValid != true)
                {
                    _zone = this.Continent.FindRegion(_zonetext);
                }
                return _zone;
            }
        }

        public LavishNavAPI.Regions.Region Continent
        {
            get
            {
                Bytebot.Global.WoW.WoWScript("SetMapToCurrentZone()");
                List<string> Continents = Bytebot.Global.WoW.WoWScript("GetMapContinents()");
                int ContinentIndex = int.Parse(Bytebot.Global.WoW.WoWScript("GetCurrentMapContinent()")[0]);
                string ContinentString = Continents[ContinentIndex - 1];

                if (ContinentString == null)
                {
                    ContinentString = "Instance";
                }

                return Bytebot.Global.Nav.Tree.FindRegion("Azeroth").FindRegion(ContinentString);
            }
        }
        #endregion

    }
}