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backend/fix/osrmMatchAPI-1-point-only-error #1059

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7 changes: 6 additions & 1 deletion lib/mobility-core/src/Kernel/External/Maps/Interface/OSRM.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -51,8 +51,13 @@ callOsrmMatch ::
SnapToRoadReq ->
m SnapToRoadResp
callOsrmMatch entityId osrmCfg req@(SnapToRoadReq wps distanceUnit calculateDistanceFrom) = do
let wps' =
if length wps == 1
then [head wps, head wps] -- OSRM requires at least 2 points or it will throw an error
else wps
let req' = req {points = wps'} :: SnapToRoadReq
let mbRadius = fmap (.getMeters) osrmCfg.radiusDeviation
res <- OSRM.callOsrmMatchAPI entityId req osrmCfg.osrmUrl mbRadius CAR (OSRM.PointsList wps)
res <- OSRM.callOsrmMatchAPI entityId req' osrmCfg.osrmUrl mbRadius CAR (OSRM.PointsList wps')
(dist, conf, interpolatedPts) <- OSRM.getResultOneRouteExpected res
pure $ case calculateDistanceFrom of
Just _ -> do
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