using System;
using System.Text.Json;
using System.Collections.Generic;
using SocketIOClient.Transport;

namespace SocketIOClient.Messages
{
    public class OpenedMessage : IMessage
    {
        public MessageType Type => MessageType.Opened;

        public string Sid { get; set; }

        public string Namespace { get; set; }

        public List<string> Upgrades { get; private set; }

        public int PingInterval { get; private set; }

        public int PingTimeout { get; private set; }

        public List<byte[]> OutgoingBytes { get; set; }

        public List<byte[]> IncomingBytes { get; set; }

        public int BinaryCount { get; }

        public int Eio { get; set; }

        public TransportProtocol Protocol { get; set; }

        private int GetInt32FromJsonElement(JsonElement element, string msg, string name)
        {
            var p = element.GetProperty(name);
            int val;
            switch (p.ValueKind)
            {
                case JsonValueKind.String:
                    val = int.Parse(p.GetString());
                    break;
                case JsonValueKind.Number:
                    val = p.GetInt32();
                    break;
                default:
                    throw new ArgumentException($"Invalid message: '{msg}'");
            }
            return val;
        }

        public void Read(string msg)
        {
            var doc = JsonDocument.Parse(msg);
            var root = doc.RootElement;
            Sid = root.GetProperty("sid").GetString();

            PingInterval = GetInt32FromJsonElement(root, msg, "pingInterval");
            PingTimeout = GetInt32FromJsonElement(root, msg, "pingTimeout");

            Upgrades = new List<string>();
            var upgrades = root.GetProperty("upgrades").EnumerateArray();
            foreach (var item in upgrades)
            {
                Upgrades.Add(item.GetString());
            }
        }

        public string Write()
        {
            //var builder = new StringBuilder();
            //builder.Append("40");
            //if (!string.IsNullOrEmpty(Namespace))
            //{
            //    builder.Append(Namespace).Append(',');
            //}
            //return builder.ToString();
            throw new NotImplementedException();
        }
    }
}