using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace FS_CLIENT.Networking
{
    public class Packet
    {
        private byte[] _buffer;

        public Packet(ushort length, ushort type)
        {
            length = (ushort)(4 + length);
            _buffer = new byte[length];
            WriteUInt16(length, 0);
            WriteUInt16(type, 2);
        }

        public Packet(byte[] buffer)
        {
            _buffer = buffer;
        }

        public void WriteUInt16(ushort value, int offset)
        {
            byte[] buffer = new byte[2];
            buffer = BitConverter.GetBytes(value);
            Buffer.BlockCopy(buffer, 0, _buffer, offset, 2);
        }

        public void WriteString(string value, int offset)
        {
            byte[] buffer = new byte[value.Length];
            buffer = Encoding.ASCII.GetBytes(value);
            Buffer.BlockCopy(buffer, 0, _buffer, offset, value.Length);
        }

        public byte[] GetBytes()
        {
            return _buffer;
        }

        public ushort ReadUInt16(int offset)
        {
            return (ushort)BitConverter.ToInt16(_buffer, offset);
        }

        public string ReadString()
        {
            return Encoding.ASCII.GetString(_buffer, 4, _buffer.Length - 4);
        }
    }
}