/// <summary>
/// Retrieve a list of all planets, and order them by their Diameter, from largest to smallest,
/// as well as the average diameter of those planets whose diameter is known.
/// </summary>
/// <returns>ActionResult</returns>
public async Task <IActionResult> GetAllPlanets()
{
var model = new AllPlanetsViewModel();
model.PlanetViewModels = (await _StarWarsService.GetPlanetsAsync())
.Select(p => new PlanetDetailsViewModel
{
Name = p.Name,
Population = p.Population == "unknown" ? "unknown" : long.Parse(p.Population).ToString("N0"),
Diameter = p.Diameter,
Terrain = p.Terrain,
LengthOfYear = p.LengthOfYear
})
.OrderByDescending(p => p.DiameterAsInt) // Largest Diameter to Smallest Diameter
.ToList();
return(View(model));
}