static void Main(string[] args)
{
OfferSystem offerSystem = new OfferSystem();
OfferInterpreter interpreter = new OfferInterpreter(new ConsoleOutputWriter());
while (true)
{
var line = Console.ReadLine();
if (!interpreter.ProcessCommand(line, offerSystem))
{
break;
}
}
}
public bool ProcessCommand(string line, OfferSystem offerSystem)
{
if (string.IsNullOrWhiteSpace(line))
{
Console.WriteLine("Error: Valid command is missing");
return(true);
}
var codeAndComment = line.Split(new char[] { '#' });
var parts = codeAndComment[0].Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
string command = parts[0].ToLowerInvariant();
switch (command)
{
case "driver":
if (parts.Length < 3)
{
OutputInsufficientArguments(parts[0]);
return(true);
}
uint capacity;
if (!uint.TryParse(parts[1], out capacity))
{
OutputInvalidArgument(command, parts[1]);
return(true);
}
offerSystem.Driver(GetDriverName(parts, 2), capacity);
break;
case "shipment":
if (parts.Length < 3)
{
OutputInsufficientArguments(parts[0]);
return(true);
}
uint shipmentId;
if (!uint.TryParse(parts[1], out shipmentId))
{
OutputInvalidArgument(command, parts[1]);
return(true);
}
uint shipCapacity;
if (!uint.TryParse(parts[2], out shipCapacity))
{
OutputInvalidArgument(command, parts[2]);
return(true);
}
var result = offerSystem.Shipment(shipmentId, shipCapacity);
if (result != null)
{
_outputWriter.WriteLine(result);
}
else
{
_outputWriter.WriteLine(NoValidDriversString);
}
break;
case "offer":
if (parts.Length < 4)
{
OutputInsufficientArguments(parts[0]);
return(true);
}
if (!uint.TryParse(parts[1], out shipmentId))
{
OutputInvalidArgument(command, parts[1]);
return(true);
}
OfferResult offerResult;
if (!Enum.TryParse <OfferResult>(parts[2].ToLowerInvariant(), out offerResult))
{
OutputInvalidArgument(command, parts[2]);
return(true);
}
bool hasError;
result = offerSystem.Offer(shipmentId, offerResult, GetDriverName(parts, 3), out hasError);
if (offerResult != OfferResult.accept || hasError)
{
if (result != null)
{
_outputWriter.WriteLine(result);
}
else
{
_outputWriter.WriteLine(NoValidDriversString);
}
}
break;
case _endCommand:
return(false);
default:
OutputUnrecognizedCommand(command);
break;
}
return(true);
}