/// <summary>
/// Creates a new instance of the IntercomTest class with the specified parameters.
/// </summary>
/// <param name="userId">Customer user ID.</param>
/// <param name="name">Customer name.</param>
/// <param name="location">Customer location.</param>
/// <exception cref="ArgumentNullException">Thrown if customer name or location is null.</exception>
/// <exception cref="ArgumentException">Thrown if customer name is an empty string.</exception>
public Customer(int userId, string name, GeographicalLocation location)
{
UserId = userId;
if (ReferenceEquals(name, null))
{
throw new ArgumentNullException(nameof(name), CreateNameNullMessage());
}
if (string.IsNullOrWhiteSpace(name))
{
throw new ArgumentException(CreateNameEmptyMessage(), nameof(name));
}
Name = name.Trim();
if (ReferenceEquals(location, null))
{
throw new ArgumentNullException(nameof(location), CreateLocationNullMessage());
}
Location = location;
}
/// <summary>
/// Gets the distance from the specified other location, in kilometers.
/// </summary>
/// <param name="otherLocation">Other location.</param>
/// <returns>Distance from the specified location in kilometers.</returns>
public double DistanceFrom(GeographicalLocation otherLocation)
{
return(CalculateDistance(this, otherLocation));
}
/// <summary>
/// Calculates the distance between the specified geographical locations. The formula from https://en.wikipedia.org/wiki/Great-circle_distance
/// was used for calculations. Mean Earth radius is cca. 6371 kilometers.
/// </summary>
/// <param name="firstLocation">First location.</param>
/// <param name="secondLocation">Second location.</param>
/// <returns></returns>
public static double CalculateDistance(GeographicalLocation firstLocation, GeographicalLocation secondLocation)
{
return(Utilty.Calculator.CalculateGreatCircleDistance(firstLocation.RadianLatitude, firstLocation.RadianLongitude,
secondLocation.RadianLatitude, secondLocation.RadianLongitude, MEAN_EARTH_RADIUS_KM));
}
