using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using libsecondlife;
using libsecondlife.Packets;
using Axiom.MathLib;

namespace OpenSim.world
{
    public class Avatar : Entity
    {
	public string firstname;
        public string lastname;
	public OpenSimClient ControllingClient;
	public LLVector3 oldvel;
	public LLVector3 oldpos;
	public uint CurrentKeyMask;
	public bool walking;

	private libsecondlife.Packets.ObjectUpdatePacket.ObjectDataBlock AvatarTemplate;

        public Avatar(OpenSimClient TheClient) {
        	OpenSim_Main.localcons.WriteLine("Avatar.cs - Loading details from grid (DUMMY)");
		ControllingClient=TheClient;
		SetupTemplate("avatar-template.dat");

		position = new LLVector3(100.0f,100.0f,60.0f);
	}

	public override void update() {
		lock(this) {
			base.update();

			oldvel=this.velocity;
			oldpos=this.position;
			if((this.CurrentKeyMask & (uint)MainAvatar.AgentUpdateFlags.AGENT_CONTROL_AT_POS) != 0) {
				Vector3 tmpVelocity = this.rotation * new Vector3(1.0f,0.0f,0.0f);
				tmpVelocity.Normalize(); tmpVelocity = tmpVelocity * 0.5f;
				this.velocity.X = tmpVelocity.x;
				this.velocity.Y = tmpVelocity.y;
				this.velocity.Z = tmpVelocity.z;
				this.walking=true;
			} else {
				this.velocity.X=0;
				this.velocity.Y=0;
				this.velocity.Z=0;
				this.walking=false;
			}
		}
	}

	private void SetupTemplate(string name)
		{
			
			int i = 0;
			FileInfo fInfo = new FileInfo(name);
			long numBytes = fInfo.Length;
			FileStream fStream = new FileStream(name, FileMode.Open, FileAccess.Read);
			BinaryReader br = new BinaryReader(fStream);
			byte [] data1 = br.ReadBytes((int)numBytes);
			br.Close();
			fStream.Close();
			
			libsecondlife.Packets.ObjectUpdatePacket.ObjectDataBlock objdata = new libsecondlife.Packets.ObjectUpdatePacket.ObjectDataBlock(data1, ref i);
			
			System.Text.Encoding enc = System.Text.Encoding.ASCII;
			libsecondlife.LLVector3 pos = new LLVector3(objdata.ObjectData, 16);
			pos.X = 100f;
			objdata.ID = this.localid;
			objdata.NameValue = enc.GetBytes("FirstName STRING RW SV Test \nLastName STRING RW SV User \0");
			libsecondlife.LLVector3 pos2 = new LLVector3(100f,100f,23f);
			//objdata.FullID=user.AgentID;
			byte[] pb = pos.GetBytes();			
			Array.Copy(pb, 0, objdata.ObjectData, 16, pb.Length);
			
			AvatarTemplate = objdata;
				
		}

	public void CompleteMovement(World RegionInfo) {
		OpenSim_Main.localcons.WriteLine("Avatar.cs:CompleteMovement() - Constructing AgentMovementComplete packet");
		AgentMovementCompletePacket mov = new AgentMovementCompletePacket();
		mov.AgentData.SessionID = this.ControllingClient.SessionID;
		mov.AgentData.AgentID = this.ControllingClient.AgentID;
		mov.Data.RegionHandle = OpenSim_Main.cfg.RegionHandle;
		// TODO - dynamicalise this stuff
		mov.Data.Timestamp = 1172750370;
		mov.Data.Position = new LLVector3((float)this.position.X, (float)this.position.Y, (float)this.position.Z);
		mov.Data.LookAt = new LLVector3(0.99f, 0.042f, 0);
		
		OpenSim_Main.localcons.WriteLine("Sending AgentMovementComplete packet");
		ControllingClient.OutPacket(mov);
	}

	public void SendInitialPosition() {
		System.Text.Encoding _enc = System.Text.Encoding.ASCII;
		

		//send a objectupdate packet with information about the clients avatar
		ObjectUpdatePacket objupdate = new ObjectUpdatePacket();
		objupdate.RegionData.RegionHandle = OpenSim_Main.cfg.RegionHandle;
		objupdate.RegionData.TimeDilation = 64096;
		objupdate.ObjectData = new libsecondlife.Packets.ObjectUpdatePacket.ObjectDataBlock[1];
			
		objupdate.ObjectData[0] = AvatarTemplate;
		//give this avatar object a local id and assign the user a name
		objupdate.ObjectData[0].ID = this.localid; 
		//User_info.name="Test"+this.local_numer+" User";
		objupdate.ObjectData[0].FullID = ControllingClient.AgentID;
		objupdate.ObjectData[0].NameValue = _enc.GetBytes("FirstName STRING RW SV " + firstname + "\nLastName STRING RW SV " + lastname + " \0");
			
		libsecondlife.LLVector3 pos2 = new LLVector3((float)this.position.X, (float)this.position.Y, (float)this.position.Z);
		
		byte[] pb = pos2.GetBytes();
						
		Array.Copy(pb, 0, objupdate.ObjectData[0].ObjectData, 16, pb.Length);
		OpenSim_Main.local_world._localNumber++;
		this.ControllingClient.OutPacket(objupdate);
	}

	public override ImprovedTerseObjectUpdatePacket.ObjectDataBlock CreateTerseBlock() {
			byte[] bytes = new byte[60];
			int i=0;
			ImprovedTerseObjectUpdatePacket.ObjectDataBlock dat = new ImprovedTerseObjectUpdatePacket.ObjectDataBlock();
			
			dat.TextureEntry = AvatarTemplate.TextureEntry;
			libsecondlife.LLVector3 pos2 = new LLVector3(this.position.X, this.position.Y, this.position.Z);
			
			uint ID = this.localid; 
			bytes[i++] = (byte)(ID % 256);
			bytes[i++] = (byte)((ID >> 8) % 256);
			bytes[i++] = (byte)((ID >> 16) % 256);
			bytes[i++] = (byte)((ID >> 24) % 256);
			bytes[i++] = 0;
			bytes[i++] = 1;
			i += 14;
			bytes[i++] = 128;
			bytes[i++] = 63;
			
			byte[] pb = pos2.GetBytes();
			Array.Copy(pb, 0, bytes, i, pb.Length);
			i += 12;
			

			ushort ac = 32767;
                        bytes[i++] = (byte)((ushort)(((this.velocity.X/128f)+1)*32767) % 256 );
                        bytes[i++] = (byte)(((ushort)(((this.velocity.X/128f)+1)*32767) >> 8) % 256);
                        bytes[i++] = (byte)((ushort)(((this.velocity.Y/128f)+1)*32767) % 256);
                        bytes[i++] = (byte)(((ushort)(((this.velocity.Y/128f)+1)*32767) >> 8) % 256);
                        bytes[i++] = (byte)((ushort)(((this.velocity.Z/128f)+1)*32767) % 256);
                        bytes[i++] = (byte)(((ushort)(((this.velocity.Z/128f)+1)*32767) >> 8) % 256);



			
			//accel
			bytes[i++] = (byte)(ac % 256);
			bytes[i++] = (byte)((ac >> 8) % 256);
			bytes[i++] = (byte)(ac % 256);
			bytes[i++] = (byte)((ac >> 8) % 256);
			bytes[i++] = (byte)(ac % 256);
			bytes[i++] = (byte)((ac >> 8) % 256);
			
			//rot
			bytes[i++] = (byte)(ac % 256);
			bytes[i++] = (byte)((ac >> 8) % 256);
			bytes[i++] = (byte)(ac % 256);
			bytes[i++] = (byte)((ac >> 8) % 256);
			bytes[i++] = (byte)(ac % 256);
			bytes[i++] = (byte)((ac >> 8) % 256);	
			bytes[i++] = (byte)(ac % 256);
			bytes[i++] = (byte)((ac >> 8) % 256);
			
			//rotation vel
			bytes[i++] = (byte)(ac % 256);
			bytes[i++] = (byte)((ac >> 8) % 256);			
			bytes[i++] = (byte)(ac % 256);
			bytes[i++] = (byte)((ac >> 8) % 256);	
			bytes[i++] = (byte)(ac % 256);
			bytes[i++] = (byte)((ac >> 8) % 256);
			
			dat.Data=bytes;
			return(dat);
		
	}
	
	public void SendInitialAppearance() {
		AgentWearablesUpdatePacket aw = new AgentWearablesUpdatePacket();
		aw.AgentData.AgentID = this.ControllingClient.AgentID;
		aw.AgentData.SerialNum = 0;
		aw.AgentData.SessionID = ControllingClient.SessionID;
 
		aw.WearableData = new AgentWearablesUpdatePacket.WearableDataBlock[13];
		AgentWearablesUpdatePacket.WearableDataBlock awb = new AgentWearablesUpdatePacket.WearableDataBlock();
		awb.WearableType = (byte)0;
		awb.AssetID = new LLUUID("66c41e39-38f9-f75a-024e-585989bfab73");
		awb.ItemID = LLUUID.Random();
		aw.WearableData[0] = awb;
 
		for(int i=1; i<13; i++) {
  			awb = new AgentWearablesUpdatePacket.WearableDataBlock();
  			awb.WearableType = (byte)i;
  			awb.AssetID = new LLUUID("00000000-0000-0000-0000-000000000000");
  			awb.ItemID = new LLUUID("00000000-0000-0000-0000-000000000000");
  			aw.WearableData[i] = awb;
		}
	
		ControllingClient.OutPacket(aw);
	}

	public void SendRegionHandshake(World RegionInfo) {
		OpenSim_Main.localcons.WriteLine("Avatar.cs:SendRegionHandshake() - Creating empty RegionHandshake packet");
		System.Text.Encoding _enc = System.Text.Encoding.ASCII;
		RegionHandshakePacket handshake = new RegionHandshakePacket();
		
		OpenSim_Main.localcons.WriteLine("Avatar.cs:SendRegionhandshake() - Filling in RegionHandshake details");
		handshake.RegionInfo.BillableFactor = 0;
                handshake.RegionInfo.IsEstateManager = false;
                handshake.RegionInfo.TerrainHeightRange00 = 60;
                handshake.RegionInfo.TerrainHeightRange01 = 60;
                handshake.RegionInfo.TerrainHeightRange10 = 60;
                handshake.RegionInfo.TerrainHeightRange11 = 60;
                handshake.RegionInfo.TerrainStartHeight00 = 10;
                handshake.RegionInfo.TerrainStartHeight01 = 10;
                handshake.RegionInfo.TerrainStartHeight10 = 10;
                handshake.RegionInfo.TerrainStartHeight11 = 10;
                handshake.RegionInfo.SimAccess = 13;
                handshake.RegionInfo.WaterHeight = 20.0f;
                handshake.RegionInfo.RegionFlags = 72458694; // TODO: WTF sirs? Use an enum!
                handshake.RegionInfo.SimName = _enc.GetBytes(OpenSim_Main.cfg.RegionName + "\0");
                handshake.RegionInfo.SimOwner = new LLUUID("00000000-0000-0000-0000-000000000000");
                handshake.RegionInfo.TerrainBase0 = new LLUUID("b8d3965a-ad78-bf43-699b-bff8eca6c975");
                handshake.RegionInfo.TerrainBase1 = new LLUUID("abb783e6-3e93-26c0-248a-247666855da3");
                handshake.RegionInfo.TerrainBase2 = new LLUUID("179cdabd-398a-9b6b-1391-4dc333ba321f");
                handshake.RegionInfo.TerrainBase3 = new LLUUID("beb169c7-11ea-fff2-efe5-0f24dc881df2");
                handshake.RegionInfo.TerrainDetail0 = new LLUUID("00000000-0000-0000-0000-000000000000");
                handshake.RegionInfo.TerrainDetail1 = new LLUUID("00000000-0000-0000-0000-000000000000");
                handshake.RegionInfo.TerrainDetail2 = new LLUUID("00000000-0000-0000-0000-000000000000");
                handshake.RegionInfo.TerrainDetail3 = new LLUUID("00000000-0000-0000-0000-000000000000");
                handshake.RegionInfo.CacheID = new LLUUID("545ec0a5-5751-1026-8a0b-216e38a7ab37");
		
		OpenSim_Main.localcons.WriteLine("Avatar.cs:SendRegionHandshake() - Sending RegionHandshake packet");
		this.ControllingClient.OutPacket(handshake);
	}

	public void HandleAgentUpdate(AgentUpdatePacket update) {
 	    lock(this) {
		this.CurrentKeyMask = update.AgentData.ControlFlags;
		this.rotation = new Quaternion(update.AgentData.BodyRotation.W, update.AgentData.BodyRotation.X, update.AgentData.BodyRotation.Y, update.AgentData.BodyRotation.Z);
		this.needupdate = true;
	    }
    	}

    }
}