From d1418e390a86df4284b81f81ae8452579ab3d73e Mon Sep 17 00:00:00 2001
From: jbergner <jbergner@send.nrw>
Date: Sat, 25 Apr 2026 22:14:43 +0200
Subject: [PATCH] UpdatedTimeZone

---
 main.go | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/main.go b/main.go
index 1c7bb6d..50272a6 100644
--- a/main.go
+++ b/main.go
@@ -864,6 +864,8 @@ type Config struct {
 	BaselineMediumZScore float64
 	BaselineHighZScore   float64
 	BaselineSuppressFor  time.Duration
+
+	Timezone string
 }
 
 type LogPayload struct {
@@ -934,6 +936,8 @@ type server struct {
 	detector  *detector
 	startTime time.Time
 	templates *template.Template
+
+	location *time.Location
 }
 
 type detector struct {
@@ -1161,6 +1165,11 @@ var (
 func main() {
 	cfg := loadConfig()
 	logger := log.New(os.Stdout, "", log.LstdFlags|log.Lmicroseconds|log.LUTC)
+	loc, err := time.LoadLocation(cfg.Timezone)
+	if err != nil {
+		logger.Printf("invalid TZ %q, falling back to Local: %v", cfg.Timezone, err)
+		loc = time.Local
+	}
 
 	db, err := sql.Open("mysql", cfg.DBDSN)
 	if err != nil {
@@ -1271,6 +1280,7 @@ func main() {
 		registry:  reg,
 		detector:  d,
 		startTime: time.Now().UTC(),
+		location:  loc,
 	}
 
 	tmpl := template.Must(template.New("ui").Funcs(template.FuncMap{
@@ -1279,7 +1289,7 @@ func main() {
 			if t.IsZero() {
 				return ""
 			}
-			return t.Local().Format("2006-01-02 15:04:05")
+			return t.In(loc).Format("2006-01-02 15:04:05 MST")
 		},
 		"short": func(s string, n int) string {
 			if len(s) <= n {
@@ -2481,6 +2491,8 @@ func loadConfig() Config {
 		BaselineMediumZScore: getenvFloat("BASELINE_MEDIUM_Z", 2.5),
 		BaselineHighZScore:   getenvFloat("BASELINE_HIGH_Z", 4.0),
 		BaselineSuppressFor:  getenvDuration("BASELINE_SUPPRESS_FOR", 1*time.Hour),
+
+		Timezone: getenv("TZ", "Europe/Berlin"),
 	}
 }
 
@@ -2700,7 +2712,7 @@ LIMIT 1
 
 	const upd = `
 UPDATE agents
-SET last_seen = CURRENT_TIMESTAMP(6), last_ip = ?
+SET last_seen = UTC_TIMESTAMP(6), last_ip = ?
 WHERE id = ?
 `
 	if _, err := s.db.ExecContext(ctx, upd, remoteIP, id); err != nil {
@@ -2726,7 +2738,7 @@ func (s *server) enrollNewAgent(ctx context.Context, hostname, apiKey, remoteIP
 
 	const ins = `
 INSERT INTO agents (hostname, api_key_hash, first_seen, last_seen, last_ip, is_enabled)
-VALUES (?, ?, CURRENT_TIMESTAMP(6), CURRENT_TIMESTAMP(6), ?, 1)
+VALUES (?, ?, UTC_TIMESTAMP(6), UTC_TIMESTAMP(6), ?, 1)
 `
 	res, err := tx.ExecContext(ctx, ins, hostname, sha256Hex(apiKey), remoteIP)
 	if err != nil {
@@ -3070,7 +3082,7 @@ SET avg_count = ?,
     m2_count = ?,
     stddev_count = ?,
     sample_count = ?,
-    last_updated = CURRENT_TIMESTAMP(6)
+    last_updated = UTC_TIMESTAMP(6)
 WHERE hostname = ?
   AND channel_name = ?
   AND event_id = ?