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

namespace ChatRoomServer.Main.Entities
{
	using System.IO;

	class MessageUser
	{
		public MessageUser(string username, string nickname)
		{
			UserName = username;
			NickName = nickname;
		}

		public string UserName { get; set; }

		public string NickName { get; set; }
	}

	class MessageItem
	{
		public MessageItem()
		{
			Time = DateTime.Now;
		}

		public MessageItem(

			SystemMessageType? sysMsgType = null,
			UserMessageType? userMsgType = null,
			string action = null,
			bool success = true,
			MessageUser fromUser = null,
			string content = null
			) : this()
		{
			SystemMessage = sysMsgType != null;
			SysMsgType = sysMsgType ?? SystemMessageType.Unknown;
			UserMsgType = userMsgType ?? UserMessageType.Unknown;
			Action = action;
			Success = success;
			From = fromUser;
			Content = content;

			if (sysMsgType.HasValue && From == null)
			{
				From = new MessageUser("*system", "系统");
			}
		}

		public long Id { get; set; }

		public string Action { get; set; }

		public bool Success { get; set; }

		public DateTime Time { get; set; }

		public bool SystemMessage { get; set; }

		public SystemMessageType SysMsgType { get; set; }

		public UserMessageType UserMsgType { get; set; }

		public string Content { get; set; }

		public string Color { get; set; }

		public string[] Images { get; set; }


		public MessageUser From { get; set; }

		public MessageUser[] ToUsers { get; set; }

		public byte[] ToBuffer() => _buffer ?? (_buffer = EntityUtility.ToBuffer(this));

		public static MessageItem Decode(byte[] buffer) => EntityUtility.FromBuffer(buffer);

		byte[] _buffer;
	}
}