private static XDocument LoadXDocument(string filePath)
{
XDocument xml;
try
{
xml = XDocument.Load(filePath);
}
catch (Exception e)
{
throw new ArgumentException("Ugyldig filangivelse - kan ikke tolke fil som XML", e);
}
if (xml.Root == null)
{
throw new ArgumentException("Ugyldig filangivelse - finner ikke rot-element i XML");
}
if (xml.Root.Elements().Count() == 1 && xml.Root.Elements().Single().Name == "ev_comp")
{
// Ond BillettService-kodet XML som må "pakkes opp" først
var decoder = new TicketDecoder();
xml = decoder.ExtractXml(xml);
if (xml.Root == null)
{
throw new ArgumentException("Komprimert XML mangler rot-element");
}
}
return(xml);
}
private static string SolvePart2(List <string> input)
{
(List <Ticket> tickets, List <int> yourTicket, TicketValidator ticketValidator) = InputParser.ParseInput(input);
var validTickets = tickets.Where(ticket => !ticket.GetInvalidValues(ticketValidator).Any()).ToList();
var ruleMapping = new TicketDecoder(validTickets, ticketValidator).GetRuleMapping();
var departureIndices = ruleMapping.Where(x => x.Key.StartsWith("departure")).Select(x => x.Value).ToList();
return(departureIndices
.Select(x => yourTicket[x])
.Product()
.ToString());
}
