Try to avoid too much repetitions

main.go

@@ -175,7 +175,11 @@ func main() {
 		return
 	}
 
-	rand.Seed(time.Now().UnixNano())
+	seed := time.Now().Unix() % 172800 * 64
+
+	log.Println("Starting reveil with seed:", seed)
+
+	rand.Seed(seed)
 
 	sampleRate := beep.SampleRate(*sr)
 
@@ -209,9 +213,10 @@ func main() {
 	dontUpdateVolume := false
 	hasClaironed := claironTime == nil || *claironTime == -1
 	hasSpokeWeather := weatherTime == nil || *weatherTime == -1
+	reverseOrder := time.Now().Unix()%86400%2 == 0
+	playedItem := -1
 
 	// Create infinite stream
-	playedItem := -1
 	stream := beep.Iterate(func() beep.Streamer {
 		if !hasClaironed && time.Since(launched) >= *claironTime {
 			log.Println("clairon time!")
@@ -236,9 +241,17 @@ func main() {
 
 		dontUpdateVolume = false
 		volume.Volume = -2 - math.Log(5/float64(ntick))/3
-		playedItem += 1
+
+		if reverseOrder {
+			playedItem -= 1
+		} else {
+			playedItem += 1
+		}
+
 		if playedItem >= len(playlist) {
 			playedItem = 0
+		} else if playedItem < 0 {
+			playedItem = len(playlist) - 1
 		}
 
 		if i, ok := playlist[playedItem].(beep.StreamSeekCloser); ok {