public async Task <IActionResult> FizzBuzz(FizzBuzzFormModel fizzBuzzFormModel)
{
if (!ValidateUserInput(fizzBuzzFormModel))
{
return(BadRequest("Server validation failed."));
}
//Add record to database.
await AddGameDataToDB(fizzBuzzFormModel);
//Return the results of the FizzBuzz game to the appropriate view.
return(PartialView("~/Views/Home/PartialFizzBuzz.cshtml", PlayFizzBuzz(fizzBuzzFormModel)));
}
/// <summary>
/// Returns result of FizzBuzz game using multiples of 3 and 5 by default.
/// </summary>
/// <param name="fizzBuzzFormModel">The start and end values of the FizzBuzz game. 1 to 100 by default.</param>
/// <returns>Returns result of FizzBuzz game using multiples of 3 and 5 by default.</returns>
public List <FizzBuzzResultViewModel> PlayFizzBuzz(FizzBuzzFormModel fizzBuzzFormModel)
{
//Create list of results to send to view.
var results = new List <FizzBuzzResultViewModel>();
//Loop through start value to end value.
for (int i = fizzBuzzFormModel.StartValue; i <= fizzBuzzFormModel.EndValue; i++)
{
/* Use modulo operator to determine if value is multiple of 3 or 5.
* Returns the remainder after dividing two numbers.*/
var isMultipleOf3 = i % 3 == 0;
var isMultipleOf5 = i % 5 == 0;
//Create new result for this loop iteration.
FizzBuzzResultViewModel result = new FizzBuzzResultViewModel();
//Determine the FizzBuzz result. (Potentially not efficient as the result may be set multiple times.)
//Check if multiple of 3.
if (isMultipleOf3)
{
result.fizzBuzzResult = "Three";
}
//Check if multiple of 5.
if (isMultipleOf5)
{
result.fizzBuzzResult = "Five";
}
//Check if multiple of 3 and 5.
if (isMultipleOf3 && isMultipleOf5)
{
result.fizzBuzzResult = "Eurofins";
}
//Otherwise, just use current iteration number.
if (result.fizzBuzzResult == null)
{
result.fizzBuzzResult = i.ToString();
}
result.initialValue = i.ToString();
//Add the current result to the list of results.
results.Add(result);
}
//Return all results for this game.
return(results);
}
/// <summary>
/// Adds data about the current game of FizzBuzz to the database.
/// </summary>
/// <param name="fizzBuzzFormModel">Start and end value.</param>
public async Task AddGameDataToDB(FizzBuzzFormModel fizzBuzzFormModel)
{
//Make sure that the database is created.
await _context.Database.EnsureCreatedAsync();
//Add new entry to context. Not in database yet.
_context.FizzBuzzGameData.Add(new Data.FizzBuzzDataModel
{
startValue = fizzBuzzFormModel.StartValue,
endValue = fizzBuzzFormModel.EndValue,
dateTime = DateTime.Now
});
//Save context changes. Make changes to the database.
await _context.SaveChangesAsync();
}
/// <summary>
/// Validation for the user input, start and end values.
/// </summary>
/// <param name="fizzBuzzFormModel">The start and end values of the FizzBuzz game. 1 to 100 by default</param>
/// <returns>True of the input is valid.</returns>
public bool ValidateUserInput(FizzBuzzFormModel fizzBuzzFormModel)
{
var startValue = fizzBuzzFormModel.StartValue;
var endValue = fizzBuzzFormModel.EndValue;
//Start value must be greater than end value.
if (startValue > endValue)
{
return(false);
}
//No more than 1000 iterations.
if ((endValue - startValue) > 200)
{
return(false);
}
//Otherwise validation has passed.
return(true);
}
