public ActionResult Index()
{
var model = new BeertownModel();
InitLists(model);
return View(model);
}
public ActionResult Index(BeertownModel model)
{
// Составляем граф по данным из БД:
Dictionary<int, ISet<PathFinder.Edge>> graph = CreateGraph();
PathFinder pathFinder = new PathFinder(graph, model.StartStationId);
// TODO: Хорошо бы кэшировать объект pathFinder для одинаковых значений StartStationId
// Заполняем путь для отображения.
model.Path = new List<BeertownModel.PathNode>();
var toStation = _SubwayRepository.Stations.First(p => p.StationId == model.DestinationStationId);
while (toStation.StationId != model.StartStationId)
{
var closestNode = pathFinder.ClosedNodes[toStation.StationId];
var fromStation = _SubwayRepository.Stations.First(p => p.StationId == closestNode.NextNodeId);
model.Path.Insert(0, new BeertownModel.PathNode
{
Station = new BeertownModel.SubwayStation { StationId = toStation.StationId, StationName = toStation.StationName, LineColorCode = toStation.Line.LineColorCode, LineId = toStation.LineId },
Duration = closestNode.Distance
});
toStation = fromStation;
}
model.Path.Insert(0, new BeertownModel.PathNode
{
Station = new BeertownModel.SubwayStation { StationId = toStation.StationId, StationName = toStation.StationName, LineColorCode = toStation.Line.LineColorCode, LineId = toStation.LineId },
Duration = 0
});
model.Cost = new List<BeertownModel.CostDetail>();
foreach (var t in _SubwayRepository.LineTarifs.Where(p => p.ActualDate <= DateTime.Now && p.ActualEndDate >= DateTime.Now && model.Path.Select(pp => pp.Station.LineId).Contains(p.LineId)))
{
model.Cost.Add(new BeertownModel.CostDetail { Cost = t.Cost, CostItem = "проезд по " + t.Line.LineNameDativeCase + " линии", LineColorCode = t.Line.LineColorCode });
}
InitLists(model);
return View(model);
}
private void InitLists(BeertownModel model)
{
List<SelectListGroup> groups = _SubwayRepository.Lines.Select(p => new SelectListGroup { Name = p.LineName }).ToList();
model.Stations = _SubwayRepository.Stations.Select(p => new SelectListItem { Value = p.StationId.ToString(), Text = p.StationName, Group = groups.First(pp => pp.Name == p.Line.LineName) });
}
