private static DistanceResult GetDistanceMatrix(IMapToolkit toolkit, Place origin, List <Place> destinations)
{
// Find by file first
// {0} toolkit type, {1} Origin Id
string fileFormat = "{0}_{1}_Distance.json";
string fileName = string.Format(fileFormat, toolkit.ToolkitType, origin.Id);
if (File.Exists(fileName))
{
var visit = JsonConvert.DeserializeObject <Visit>(FileIO.ReadAll(fileName));
var distCalculations = new DistanceResult(null)
{
DistanceSort = visit.Places
};
distCalculations.FileName = fileName;
distCalculations.IsNew = false;
return(distCalculations);
}
else
{
// Otherwise call API
var distCalculations = toolkit.DistanceMatrix(origin, destinations);
distCalculations.FileName = fileName;
distCalculations.IsNew = true;
SaveToFile(fileName, origin, distCalculations);
return(distCalculations);
}
}
private static DistanceResult AddDistances(IMapToolkit toolkit, Place origin, List <Place> destinations, Graph <Place> graph)
{
DistanceResult distCalculations = GetDistanceMatrix(toolkit, origin, destinations);
EnumerateByDistance(
origin,
distCalculations,
(source, dest, dist) =>
{
if (origin.Id != source.Id)
{
throw new InvalidOperationException(string.Format("Mismatch: SourceId '{0}', Origin.Id '{1}'", source.Id, origin.Id));
}
if (source.Id != dest.Id)
{
//if(dest.Visited) { return; }
graph.Add(source, dest, dist);
var sourceNode = graph.Find(source.Id);
var destNode = graph.Find(dest.Id);
if (graph.Find(source.Id) == null)
{
graph.AddLookupId(source.Id, sourceNode);
}
if (graph.Find(dest.Id) == null)
{
graph.AddLookupId(dest.Id, destNode);
}
}
});
// Calling SaveToFile again so that DistanceId's are also saved
if (distCalculations.IsNew)
{
SaveToFile(distCalculations.FileName, origin, distCalculations);
}
return(distCalculations);
}
