public static TariffMetroCommandCalculateInterval First(this TariffMetro tariff)
{
TariffMetroCommand cmd = tariff.Commands.FirstOrDefault();
if (cmd == null)
{
return(null);
}
while (cmd.Type == TariffMetroCommandType.Goto)
{
cmd = tariff.Goto(cmd);
}
return((TariffMetroCommandCalculateInterval)cmd);
}
private DateTime GetNextEndTime(TariffMetro tariff, TariffMetroCommandCalculateInterval currentCommand, ref DateTime dtEstimatedDate)
{
//TimeSpan t1 = currentCommand.StartTime; //t1 = t_интN
TariffMetroCommandCalculateInterval nextCommand = tariff.Next(currentCommand); //U_к = U_к + 1
//TimeSpan t2 = nextCommand.StartTime; //t2 = t_интN+1
var endTime = dtEstimatedDate.Add(nextCommand.StartTime); //t_интNкон = t_опл/дата + t_интN+1
if (nextCommand.StartTime > currentCommand.StartTime)
{
return(endTime);
}
endTime += TimeSpan.FromDays(1); //t_интNкон = t_интNкон + 24ч
dtEstimatedDate += TimeSpan.FromDays(1); //t_опл/дата = t_опл/дата + 24ч
return(endTime);
}
public TariffMetro(TariffMetro tariffMetro)
: base(tariffMetro)
{
commands = new List <TariffMetroCommand>(tariffMetro.Commands);
}
/// <summary>
/// Создаёт тариф метро из указанного файла
/// </summary>
public static Tariff LoadFromFile(string fileName)
{
//check file exists
if (!File.Exists(fileName))
{
throw new FileNotFoundException("Файл не найден", fileName);
}
//read valid entries
IEnumerable <string> entries = File.ReadAllLines(fileName, Encoding.Default)
.Where(s => ((s.Length > 3) && (s[0] == CommandStartSign)));
//create commands and properties
Dictionary <int, TariffMetroCommand> commands = new Dictionary <int, TariffMetroCommand>();
Dictionary <char, int> properties = PropertyNames.ToDictionary(p => p, p => (int)PropertyDefaultValue);
//parse entries
foreach (string e in entries)
{
//split entry
string[] sa = SplitEntry(e);
//get entry name
char name = sa[0].ToUpper()[1];
//entry is command?
if (Char.IsDigit(name))
{
var n = (int)Char.GetNumericValue(name);
TariffMetroCommand cmd = ParseCommand(sa);
//stop parsing at end command
if (cmd.Type == TariffMetroCommandType.End)
{
break;
}
cmd.ID = n;
commands.Add(n, cmd);
continue;
}
//entry is property?
if (!properties.ContainsKey(name))
{
continue;
}
properties[name] = ParseProperty(name, sa);
}
//check command sequence
int[] ids = commands.Keys.OrderBy(k => k).ToArray();
if (commands.Count > 1)
{
int firstId = ids[0];
for (int i = 1; i < ids.Length; i++)
{
if ((ids[i] - ids[i - 1]) > 1)
{
throw new InvalidDataException("Неверная последовательность команд");
}
}
}
//check goto command destinations
if (commands.Values
.Where(c => c.Type == TariffMetroCommandType.Goto)
.Cast <TariffMetroCommandGoto>()
.Any(g => !ids.Contains(g.Destination)))
{
throw new InvalidDataException("Не найдено назначение команды перехода");
}
//check cyclic goto (1 level)
if (commands.Values
.Where(c => c.Type == TariffMetroCommandType.Goto)
.Cast <TariffMetroCommandGoto>()
.Any(g =>
{
TariffMetroCommand g2 = commands[g.Destination];
if (g2.Type != TariffMetroCommandType.Goto)
{
return(false);
}
return(((TariffMetroCommandGoto)g2).Destination == g.ID);
}))
{
throw new InvalidDataException("Обнаружен циклический переход");
}
//check properties
if (properties.Values.Any(v => v == PropertyDefaultValue))
{
throw new InvalidDataException("Не найдены все свойства");
}
//create tariff
var tariff = new TariffMetro();
int id = properties['C'];
id += (properties['B'] << 8);
id += (properties['A'] << 16);
tariff.ID = id;
tariff.PaymentDiscrete = ConvertMoney(properties['D']);
tariff.FreeTimeAtStart = TimeSpan.FromSeconds(properties['E']);
tariff.FreeTimeAfterPayment = TimeSpan.FromSeconds(properties['F']);
for (int i = 0; i < ids.Length; i++)
{
tariff.AddCommand(commands[i]);
}
return(tariff);
}
private static TariffMetroCommand Goto(this TariffMetro tariff, TariffMetroCommand command)
{
var g = command as TariffMetroCommandGoto;
return(g == null ? command : tariff.Commands.FirstOrDefault(c => c.ID == g.Destination));
}
