using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Timers;
using Tango.FSE.Common;
using Tango.FSE.Common.Connectivity;
using Tango.Settings;

namespace Tango.FSE.UI.Connectivity
{
    /// <summary>
    /// Represents the default <see cref="IConnectivityProvider"/> implementation.
    /// </summary>
    /// <seealso cref="Tango.FSE.BL.Connectivity.DefaultConnectivityProvider" />
    /// <seealso cref="Tango.FSE.Common.Connectivity.IConnectivityProvider" />
    public class DefaultConnectivityProvider : BL.Connectivity.DefaultConnectivityProvider, IConnectivityProvider
    {
        private Timer _autoCheckTimer;

        /// <summary>
        /// Gets or sets a value indicating whether to enable the automatic checking.
        /// </summary>
        public bool EnableAutoCheck { get; set; }

        /// <summary>
        /// Gets or sets the automatic checking interval.
        /// </summary>
        public TimeSpan AutoCheckInterval { get; set; }

        /// <summary>
        /// Initializes a new instance of the <see cref="DefaultConnectivityProvider"/> class.
        /// </summary>
        public DefaultConnectivityProvider()
        {
            EnableAutoCheck = true;
            AutoCheckInterval = TimeSpan.FromMinutes(5);
            VerificationMethod = SettingsManager.Default.GetOrCreate<FSESettings>().ConnectivityVerificationMethod;

            _autoCheckTimer = new Timer(1000); //First time needs to be close to application start...
            _autoCheckTimer.Elapsed += _autoCheckTimer_Elapsed;
            _autoCheckTimer.Start();
        }

        private void _autoCheckTimer_Elapsed(object sender, ElapsedEventArgs e)
        {
            _autoCheckTimer.Interval = AutoCheckInterval.TotalMilliseconds;
            CheckOnline();
        }
    }
}