Simplify Prometheus metric init

internal/prometheus/prometheus.go

@@ -22,26 +22,14 @@ func Handler(appConfig *models.Conf) func(c *gin.Context) {
 	}
 }
 
-var up *prometheus.GaugeVec
-
-func NewMetrics() {
-	up = promauto.NewGaugeVec(prometheus.GaugeOpts{
-		Namespace: "watch_your_lan",
-		Name:      "up",
-		Help:      "Whether the host is up (1 for yes, 0 for no)",
-	}, []string{"ip", "iface", "name", "mac", "known"})
-}
-
-func RemoveMetrics() {
-	up = nil
-}
+var up = promauto.NewGaugeVec(prometheus.GaugeOpts{
+	Namespace: "watch_your_lan",
+	Name:      "up",
+	Help:      "Whether the host is up (1 for yes, 0 for no)",
+}, []string{"ip", "iface", "name", "mac", "known"})
 
 // Add a Prometheus metric
 func Add(oneHist models.Host) {
-	if up == nil {
-		return
-	}
-
 	if oneHist.Name == "" {
 		oneHist.Name = "unknown"
 	}

internal/web/routines-upd.go

@@ -4,7 +4,6 @@ import (
 	"log/slog"
 
 	"github.com/aceberg/WatchYourLAN/internal/db"
-	"github.com/aceberg/WatchYourLAN/internal/prometheus"
 )
 
 func updateRoutines() {
@@ -19,12 +18,6 @@ func updateRoutines() {
 
 	allHosts = db.Select("now")
 
-	if appConfig.PrometheusEnable {
-		prometheus.NewMetrics()
-	} else {
-		prometheus.RemoveMetrics()
-	}
-
 	quitScan = make(chan bool)
 	go startScan(quitScan) // scan-routine.go
 }