import ogr

from importer import Importer

TABLE_NAME="river_axes_km"
PATH="Geodaesie/Flussachse+km"


class KM(Importer):

    def getPath(self, base):
        return "%s/%s" % (base, PATH)


    def getTablename(self):
        return TABLE_NAME


    def isGeometryValid(self, geomType):
        return geomType == 1


    def isShapeRelevant(self, name, path):
        return name == "km"


    def createNewFeature(self, featureDef, feat, **args):
        newFeat = ogr.Feature(featureDef)
        newFeat.SetGeometry(feat.GetGeometryRef())

        if self.IsFieldSet(feat, "river_id"):
            newFeat.SetField("river_id", feat.GetField("river_id"))
        else:
            newFeat.SetField("river_id", self.river_id)

        if self.IsDoubleFieldSet(feat, "km"):
            newFeat.SetField("km", feat.GetFieldAsDouble("km"))
        elif self.IsDoubleFieldSet(feat, "KM"):
            newFeat.SetField("km", feat.GetFieldAsDouble("KM"))
        else:
            return None

        return newFeat