public ISummary Process(IEnumerable <string> inputLines)
{
var summary = new Summary();
if (inputLines == null)
{
return(summary);
}
var listInputLines = inputLines.ToList();
if (listInputLines.Count == 0)
{
return(summary);
}
var validInput = _inputrValidator.IsValidInput(listInputLines, null);
if (!validInput)
{
summary.InvalidInput = true;
return(summary);
}
double costPerPassenger = 0;
double ticketPrice = 0;
double targetOccupancy = 0d;
int totalSeats = 0;
// TODO: following code should be moved to another class and should be injected through constructor
foreach (var elements in listInputLines.Where(item => !string.IsNullOrWhiteSpace(item)).Select(item => item.Split(null)))
{
// all input lines are validated.
// element at index 0 is action, index 1 is type of action
var instructionType = elements.ElementAt(1);
if (string.Equals(Constants.Route, instructionType, StringComparison.InvariantCultureIgnoreCase))
{
//TODO: Following should be moved to another method and return Tuple
double.TryParse(elements.ElementAt(4).Trim(), out costPerPassenger);
double.TryParse(elements.ElementAt(5).Trim(), out ticketPrice);
double.TryParse(elements.ElementAt(6).Trim(), out targetOccupancy);
continue;
}
if (string.Equals(Constants.Aircraft, instructionType, StringComparison.InvariantCultureIgnoreCase))
{
int.TryParse(elements.ElementAt(3).Trim(), out totalSeats);
continue;
}
if (string.Equals(Constants.Loyalty, instructionType, StringComparison.InvariantCultureIgnoreCase))
{
summary.NumberOfLoyaltyPassengers++;
ParseExtraBaggage(elements, summary);
ParseLoyaltyPoints(elements, summary);
summary.NumberOfBags++;
continue;
}
if (string.Equals(Constants.Airline, instructionType, StringComparison.InvariantCultureIgnoreCase))
{
summary.NumberOfAirlinePassengers++;
summary.NumberOfBags++;
continue;
}
// each passenger will carry at least bag
summary.NumberOfBags++;
summary.NumberOfGeneralPassengers++;
}
summary.TotalNumberOfPassengers = summary.NumberOfGeneralPassengers + summary.NumberOfAirlinePassengers +
summary.NumberOfLoyaltyPassengers;
summary.TotalCostOfFlight = summary.TotalNumberOfPassengers * costPerPassenger;
summary.UnadjustedTicketRevenue = summary.TotalNumberOfPassengers * ticketPrice;
summary.AdjustedTicketRevenue = summary.UnadjustedTicketRevenue - (summary.LoyaltyPointsRedeemed + summary.NumberOfAirlinePassengers * ticketPrice);
var actualOccupancy = 100d; // assuming actual occupancy 100%
if (totalSeats > 0)
{
actualOccupancy = ((double)summary.TotalNumberOfPassengers / totalSeats) * 100;
}
summary.CanFlightProceed = (summary.AdjustedTicketRevenue > summary.TotalCostOfFlight) &&
(actualOccupancy > targetOccupancy) &&
(totalSeats >= summary.TotalNumberOfPassengers);
return(summary);
}