static IEnumerable <Route> ServeRequest(Request request)
{
if (!CheckRequest(request))
{
return(null);
}
(IGraphDatabase cars, IGraphDatabase trains) = MockData.InitDatabases();
List <IGraphDatabase> databases = new List <IGraphDatabase>();
databases.Add(cars);
databases.Add(trains);
IGraphDatabase database = new VehicleDatabase(databases, request.Filter.AllowedVehicles);
database = new PopulationDatabase(database, request.Filter.MinPopulation);
database = new HasRestaurantDatabase(database, request.Filter.RestaurantRequired);
List <ISolver> solvers = new List <ISolver>();
solvers.Add(new BFS());
solvers.Add(new DFS());
solvers.Add(new DijkstraCost());
solvers.Add(new DijkstraTime());
IRouteProblem problem = ProblemFactory.MakeProblem(request.Problem, request.From, request.To);
problem.Graph = database;
foreach (ISolver solver in solvers)
{
if (solver.Name == request.Solver && problem.TrySolveBySolver(solver, out IEnumerable <Route> routes))
{
return(routes);
}
}
Console.WriteLine("Cannot find algorithm to solve this problem");
return(null);
}
