# HG changeset patch
# User Sascha L. Teichmann <sascha.teichmann@intevation.de>
# Date 1556531900 -7200
# Node ID 3dffeb6df4a31aa1a78ab6efea8e7ab17c52b809
# Parent  adca192a4070136d03fcb7d4f7be47500e9127cb
Display Available Fairway Depths: Implemented monthly, quarterly and yearly stepping through the measurements.

diff -r adca192a4070 -r 3dffeb6df4a3 pkg/controllers/bottlenecks.go
--- a/pkg/controllers/bottlenecks.go	Mon Apr 29 11:50:50 2019 +0200
+++ b/pkg/controllers/bottlenecks.go	Mon Apr 29 11:58:20 2019 +0200
@@ -684,22 +684,40 @@
 }
 
 func monthly(from, to time.Time) func() (time.Time, time.Time, string) {
+	pfrom := from
 	return func() (time.Time, time.Time, string) {
-		// TODO: Implement me!
-		return time.Time{}, time.Time{}, ""
+		if pfrom.After(to) {
+			return time.Time{}, time.Time{}, ""
+		}
+		f := pfrom
+		pfrom = pfrom.AddDate(0, 1, 0)
+		label := fmt.Sprint("%02d-%d", f.Month(), f.Year())
+		return f, f.AddDate(0, 1, 0).Add(-time.Nanosecond), label
 	}
 }
 
 func quarterly(from, to time.Time) func() (time.Time, time.Time, string) {
+	pfrom := from
 	return func() (time.Time, time.Time, string) {
-		// TODO: Implement me!
-		return time.Time{}, time.Time{}, ""
+		if pfrom.After(to) {
+			return time.Time{}, time.Time{}, ""
+		}
+		f := pfrom
+		pfrom = pfrom.AddDate(0, 3, 0)
+		label := fmt.Sprint("Q%d-%d", int(f.Month())/4+1, f.Year())
+		return f, f.AddDate(0, 3, 0).Add(-time.Nanosecond), label
 	}
 }
 
 func yearly(from, to time.Time) func() (time.Time, time.Time, string) {
+	pfrom := from
 	return func() (time.Time, time.Time, string) {
-		// TODO: Implement me!
-		return time.Time{}, time.Time{}, ""
+		if pfrom.After(to) {
+			return time.Time{}, time.Time{}, ""
+		}
+		f := pfrom
+		pfrom = pfrom.AddDate(1, 0, 0)
+		label := fmt.Sprint("%d", f.Year())
+		return f, f.AddDate(1, 0, 0).Add(-time.Nanosecond), label
 	}
 }