using System;
using System.Threading.Tasks;
using Microsoft.AspNetCore.SignalR.Client;
using Microsoft.Extensions.DependencyInjection;
using Squirrowse.Core.Models;

namespace Squirrowse.Core.Services
{
    public class ConnectionManager : IConnectionManager
    {
        private readonly HubConnection _connection;
        private bool Connected;

        public ConnectionManager(string url, int port)
        {
            _connection = new HubConnectionBuilder()
                .WithUrl($"{url}:{port}/StreamHub")
                .AddMessagePackProtocol()
                .WithAutomaticReconnect()
                .Build();
        }

        public async Task<HubConnection> GetConnection()
        {
             return _connection;
        }

        public async Task InitConnection(ConnectionType type)
        {
            if (_connection.State == HubConnectionState.Connected) return;
            if (_connection.State == HubConnectionState.Disconnected) await _connection.StartAsync();

                await RegisterOnHub(type);
                Connected = true;
            
        }


        public async Task Disconnect()
        {
            if (_connection.State == HubConnectionState.Disconnected) throw new Exception();
            await _connection.StopAsync();
            Connected = false;
        }

        private async Task RegisterOnHub(ConnectionType type)
        {
            await _connection.SendAsync("AddUser", Environment.UserName, type);
        }
    }
}