public static decimal SumValues(QBRRequest request)
{
decimal passAttempts = request.PassesAttempted;
decimal first = WeightedValueCpA(request.PassesCompleted, passAttempts);
decimal second = WeightedValueAYGpA(request.PassingYards, passAttempts);
decimal third = WeightedValueTDP(request.TouchdownPasses, passAttempts);
decimal fourth = WeightedValueInterceptions(request.Interceptions, passAttempts);
decimal QBR = (first + second + third + fourth) / 6 * 100;
return(Math.Round(QBR, 1));
}
public static QBRResponse CalculateQBR(QBRRequest request)
{
QBRResponse response = InputValidation.VaidateStats(request);
if (response.ValidInput)
{
response.Name = request.Name;
response.Rating = SumValues(request);
response.Message = $"{response.Name}'s QB Rating is: {response.Rating}";
return(response);
}
else
{
return(response);
}
}
public static QBRResponse VaidateStats(QBRRequest request)
{
QBRResponse response = new QBRResponse();
if (request.PassesCompleted < 0 || request.PassesAttempted < 0 || request.TouchdownPasses < 0 || request.Interceptions < 0)
{
response.Message = "QB stats cannot be negative (with the exception of passing yards).";
response.ValidInput = false;
return(response);
}
if (request.PassesAttempted == 0)
{
response.Message = "QB Rating is undefined for players with zero pass attempts.";
response.ValidInput = false;
return(response);
}
if (request.PassesCompleted > request.PassesAttempted)
{
response.Message = "Passes completed must be less than or equal to passes attempted.";
response.ValidInput = false;
return(response);
}
if (request.TouchdownPasses > request.PassesCompleted)
{
response.Message = "Touchdowns must be less than or equal to completions.";
response.ValidInput = false;
return(response);
}
if (request.Interceptions > request.PassesAttempted - request.PassesCompleted)
{
response.Message = "Interceptions must be less than or equal to the number of incompletions";
response.ValidInput = false;
return(response);
}
if (request.TouchdownPasses + request.Interceptions >= request.PassesAttempted)
{
response.Message = "Touchdown passes plus interceptions must be less than passes attempted.";
response.ValidInput = false;
return(response);
}
response.ValidInput = true;
return(response);
}