Worms2server/src/Syroot.Worms.OnlineWorms.Server/Net/Packet.cs

using System;
using System.Collections;
using System.Drawing;
using System.Linq;
using System.Net;
using System.Reflection;
using System.Text;

namespace Syroot.Worms.OnlineWorms.Server.Net
{
    /// <summary>
    /// Represents a packet with an ID specifying its contents. To allow the server to instantiate child packet classes,
    /// decorate it with the <see cref="PacketAttribute"/>.
    /// </summary>
    internal abstract class Packet
    {
        // ---- METHODS (PUBLIC) ---------------------------------------------------------------------------------------

        public override string ToString()
        {
#if DEBUG
            return String.Concat(GetType().Name, DumpClass(this, 1));
#else
            return GetType().Name;
#endif
        }

        // ---- METHODS (INTERNAL) -------------------------------------------------------------------------------------

        internal abstract void Deserialize(PacketStream stream);

        internal abstract void Serialize(PacketStream stream);

        // ---- METHODS (PRIVATE) --------------------------------------------------------------------------------------

#if DEBUG
        private string DumpClass(object obj, int indentLevel)
        {
            StringBuilder sb = new StringBuilder();
            string indent = new string(' ', indentLevel * 4);
            switch (obj)
            {
                case null:
                    sb.Append($"{indent}null");
                    break;
                case String stringValue:
                    sb.Append($"{indent}\"{stringValue}\"");
                    break;
                case Byte[] byteArrayValue:
                    sb.Append(indent);
                    sb.Append(String.Join(" ", byteArrayValue.Select(x => x.ToString("X2"))));
                    break;
                case IEnumerable iEnumerableValue:
                    sb.Append(indent);
                    sb.Append("[ ");
                    foreach (object element in iEnumerableValue)
                        sb.Append(DumpClass(element, indentLevel)).Append(" ");
                    sb.Append("]");
                    break;
                case Byte byteValue:
                    sb.Append($"{indent}0x{byteValue:X2}");
                    break;
                case Int16 int16Value:
                    sb.Append($"{indent}0x{int16Value:X4}");
                    break;
                case Int32 int32Value:
                    sb.Append($"{indent}0x{int32Value:X8}");
                    break;
                case Int64 int64Value:
                    sb.Append($"{indent}0x{int64Value:X16}");
                    break;
                case UInt16 uint16Value:
                    sb.Append($"{indent}0x{uint16Value:X4}");
                    break;
                case UInt32 uint32Value:
                    sb.Append($"{indent}0x{uint32Value:X8}");
                    break;
                case UInt64 uint64Value:
                    sb.Append($"{indent}0x{uint64Value:X16}");
                    break;
                case IPEndPoint ipEndPoint:
                    sb.Append($"{indent}{ipEndPoint.Address}:{ipEndPoint.Port}");
                    break;
                default:
                    Type objType = obj.GetType();
                    if (objType == typeof(Boolean) || objType.IsEnum || objType == typeof(Color)
                        || objType == typeof(IPAddress))
                    {
                        sb.Append($"{indent}{obj}");
                    }
                    else
                    {
                        foreach (PropertyInfo property in objType.GetProperties(
                            BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public))
                        {
                            if (property.GetIndexParameters().Length > 0)
                                continue;
                            sb.AppendLine();
                            sb.Append((indent + property.Name).PadRight(20));
                            sb.Append(" ");
                            sb.Append(DumpClass(property.GetValue(obj), indentLevel + 1));
                        }
                        sb.AppendLine();
                    }
                    break;
            }
            return sb.ToString().TrimEnd();
        }
#endif
    }
}