using System;

namespace TINK.Model.Station
{
    public class Position
    {
        private const double PRECISSION_LATITUDE_LONGITUDE = 0.000000000000001;

        public Position() 
        {
        }

        public Position(double latitude, double longitude)
        {
            Latitude = latitude;
            Longitude = longitude;
        }

        public double Latitude { get; private set; }

        public double Longitude { get; private set; }

        /// <summary>
        /// Compares position with a target position.
        /// </summary>
        /// <param name="p_oTarget">Target position to compare with.</param>
        /// <returns>True if positions are equal.</returns>
        public override bool Equals(object p_oTarget)
        {
            var l_oTarget = p_oTarget as Position;
            if (l_oTarget is null)
            {
                return false;
            }

            return Math.Abs(Latitude - l_oTarget.Latitude) < PRECISSION_LATITUDE_LONGITUDE
                && Math.Abs(Longitude - l_oTarget.Longitude) < PRECISSION_LATITUDE_LONGITUDE;
        }

        public override int GetHashCode()
        {
            var hashCode = -1416534245;
            hashCode = hashCode * -1521134295 + Latitude.GetHashCode();
            hashCode = hashCode * -1521134295 + Longitude.GetHashCode();
            return hashCode;
        }
    }
}