--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pkg/wfs/global.go	Wed Mar 13 18:33:03 2019 +0100
@@ -0,0 +1,67 @@
+// This is Free Software under GNU Affero General Public License v >= 3.0
+// without warranty, see README.md and license for details.
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+// License-Filename: LICENSES/AGPL-3.0.txt
+//
+// Copyright (C) 2019 by via donau
+//   – Österreichische Wasserstraßen-Gesellschaft mbH
+// Software engineering by Intevation GmbH
+//
+// Author(s):
+//  * Sascha L. Teichmann <sascha.teichmann@intevation.de>
+
+package wfs
+
+import (
+	"io"
+	"log"
+	"os/exec"
+)
+
+type (
+	Downloader interface {
+		Download(handler func(string, io.Reader) error) error
+	}
+
+	GeoJSONDownloader []string
+	GMLDownloader     []string
+)
+
+var GetFeatures = setup()
+
+func setup() func(*Capabilities, string, string) (Downloader, error) {
+	path, err := exec.LookPath("ogr2ogr")
+	if err != nil {
+		log.Println("info: ogr2ogr not installed. Using direct GeoJSON WFS download.")
+		return GetFeaturesGeoJSON
+	}
+	log.Printf("info: ogr2ogr found at %s. Using GML WFS download.\n", path)
+	return GetFeaturesGML
+}
+
+func GetFeaturesGeoJSON(
+	caps *Capabilities,
+	featureTypeName string,
+	sortBy string,
+) (Downloader, error) {
+	return nil, nil
+}
+
+func GetFeaturesGML(
+	caps *Capabilities,
+	featureTypeName string,
+	sortBy string,
+) (Downloader, error) {
+	return nil, nil
+}
+
+func (gjd GeoJSONDownloader) Download(handler func(string, io.Reader)) error {
+	// TODO: Implement, me!
+	return nil
+}
+
+func (gmd GMLDownloader) Download(handler func(string, io.Reader)) error {
+	// TODO: Implement, me!
+	return nil
+}