initial commit

cmd/tpstate/sunCalculations.go

@@ -0,0 +1,44 @@
+package main
+
+import (
+	"log"
+	"time"
+)
+
+func nextSunriseSunsetTime(t time.Time) (time.Time, time.Time, error) {
+	s := config.SunRiseSet
+
+	s.Date = t
+	currentSR, currentSS, err := s.GetSunriseSunset()
+	if err != nil {
+		return time.Time{}, time.Time{}, err
+	}
+
+	s.Date = t.Add(24 * time.Hour)
+	nextSR, nextSS, err := s.GetSunriseSunset()
+	if err != nil {
+		return time.Time{}, time.Time{}, err
+	}
+
+	var (
+		nSR time.Time
+		nSS time.Time
+	)
+
+	if currentSR.After(t) {
+		nSR = currentSR
+	} else {
+		nSR = nextSR
+	}
+
+	if currentSS.After(t) {
+		nSS = currentSS
+	} else {
+		nSS = nextSS
+	}
+
+	log.Printf("[TRACE] Next calculated sunrise: %s\n", nSR.Format("2006-01-02 15:04:05"))
+	log.Printf("[TRACE] Next calculated sunset : %s\n", nSS.Format("2006-01-02 15:04:05"))
+
+	return nSR, nSS, nil
+}