private string BuildSingleRequest(IDistanceMatrixRequestConfiguration configuration)
{
if (configuration.Destinations == null || string.IsNullOrEmpty(configuration.Origin))
{
throw new ArgumentException("Invalid request configuration");
}
if (string.IsNullOrEmpty((Application.Current as App).ApiKey))
{
throw new Exception("Missing API key");
}
configuration.Origins = new[] { configuration.Origin };
var requestParameters = "";
requestParameters += $"&key={(Application.Current as App).ApiKey}";
requestParameters += "&origins=" + string.Join("|", configuration.Origins.Select(x => x.ToString()));
requestParameters += "&destinations=" + string.Join("|", configuration.Destinations.Select(x => x.ToString()));
if (configuration.DepartureTime != null && configuration.DepartureTime != DateTime.MinValue)
{
requestParameters += "&departure_time=" + ((int)(((DateTime)configuration.DepartureTime).Subtract(new DateTime(1970, 1, 1))).TotalSeconds).ToString();
}
else
{
requestParameters += "&departure_time=" + ((int)(DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1))).TotalSeconds).ToString();
}
if (configuration.ArrivalTime != null && configuration.ArrivalTime != DateTime.MinValue)
{
requestParameters += "&arrival_time=" + ((int)(DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1))).TotalSeconds).ToString();
}
if (configuration.Restriction != Restriction.Undefined)
{
var flags = (configuration.Restriction as Enum).GetFlags();
if (flags != null && flags.Count() > 0)
{
requestParameters += "&avoid=" + string.Join("|", flags.Select(flag => (flag as Enum).GetDescription()));
}
else
{
requestParameters += "&avoid=" + (configuration.Restriction as Enum).GetDescription();
}
}
if (configuration.TrafficModel != TrafficModel.Undefined)
{
requestParameters += "&traffic_model=" + (configuration.TrafficModel as Enum).GetDescription();
}
if (configuration.TravelMode != TravelMode.Undefined)
{
requestParameters += "&mode=" + (configuration.TravelMode as Enum).GetDescription();
}
requestParameters += "&units=" + UnitSystem.Metric.GetDescription();
requestParameters += "®ion=" + RegionInfo.CurrentRegion.ThreeLetterISORegionName;
return($"https://maps.googleapis.com/maps/api/distancematrix/json?{requestParameters}");
}
private List <string> BuildRequests(IEnumerable <string> locations, IDistanceMatrixRequestConfiguration configuration)
{
var count = locations.Count();
var retval = new List <string>();
for (int i = 0; i < count; i++)
{
var config = configuration.Copy();
config.Origin = locations.ElementAt(i);
retval.Add(BuildSingleRequest(config));
}
return(retval);
}
public GoogleMapsService(IDistanceMatrixRequestConfiguration activeDistanceMatrixConfiguration)
{
_activeDistanceMatrixConfiguration = activeDistanceMatrixConfiguration;
}
