using System;
using System.Collections.Generic;
using System.Linq;

namespace TINK.Services.BluetoothLock
{
    public class TimeOutProvider : ITimeOutProvider
    {
        /// <summary> Maximum factor applied on timeout factor. </summary>
        private readonly int MAXIMUMFACTORTIMEOUT = 4;

        /// <summary> Default timeout to connect to bluetooth lock. </summary>
        public static int DEFAULT_BLUETOOTHCONNECT_TIMEOUTSECONDS = 5;

        public TimeOutProvider(IEnumerable<TimeSpan> timeOuts = null)
        {
            TimeOuts = timeOuts != null && timeOuts.Count() > 0
                ? timeOuts.ToList()
                : new List<TimeSpan> { new TimeSpan(0, 0, DEFAULT_BLUETOOTHCONNECT_TIMEOUTSECONDS) };
        }

        private List<TimeSpan> TimeOuts { get; }

        public TimeSpan MultiConnect => TimeOuts.ToArray()[0];

        public TimeSpan GetSingleConnect(int countOfTry) => countOfTry < TimeOuts.Count 
            ? TimeOuts.ToArray()[countOfTry] 
            : new TimeSpan(TimeOuts.ToArray()[0].Ticks * Math.Min(countOfTry, MAXIMUMFACTORTIMEOUT)) ;
    }
}