public async Task <decimal> CalculateBudget(BudgetsRequest request)
{
int numberOfDays = request.NumberOfDays;
DateTime currentDay = request.StartDate;
DateTime dayCounter = currentDay;
decimal budget = 0;
// The cost of banana is tiered, every 7 days, the cost go up by
// $0.05.
for (var i = 0; i < numberOfDays; i++)
{
// To find the tier, dividie current day of the month by 7
// then offset by 1 so the end of each tier doesn't overlap with
// next one. Explicit cast to int truncates decimals.
int priceTier = (int)(dayCounter.Day - 1) / 7;
// Grab enum -> 0 = Sunday, 1 = Monday...
int dayOfWeek = (int)dayCounter.DayOfWeek;
// Only buy during week days
if (dayOfWeek > 0 && dayOfWeek < 6)
{
// First tier is going to be 0, we offset by adding $0.05
// to every purchase.
budget += (priceTier * 0.05m) + 0.05m;
}
dayCounter = dayCounter.AddDays(1);
}
return(budget);
}
public async Task <IActionResult> CalculateBudget([FromBody] BudgetsRequest request)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
try
{
var response = await _budgetsManager.CalculateBudget(request);
var budget = new BudgetsDTO {
Budget = response
};
return(Ok(budget));
}
catch (Exception e)
{
return(StatusCode(500, e.Message));
}
}
