From e08ccf5f3dc42f5f2bb56b925113b3350ab1fb81 Mon Sep 17 00:00:00 2001
From: Rerowros <85008083+Rerowros@users.noreply.github.com>
Date: Sun, 10 May 2026 22:42:20 +0700
Subject: [PATCH 1/2] fix(wireguard): emit UTC log timestamps

---
 backend/wireguard/log.go                      | 4 ++--
 backend/wireguard/wireguard_lifecycle_test.go | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/backend/wireguard/log.go b/backend/wireguard/log.go
index 01093c4..52bb3e6 100644
--- a/backend/wireguard/log.go
+++ b/backend/wireguard/log.go
@@ -8,7 +8,7 @@ import (
 type logSeverity string
 
 const (
-	wireGuardLogTimestampFormat = "2006/01/02 15:04:05.000000"
+	wireGuardLogTimestampFormat = "2006-01-02T15:04:05.000000Z07:00"
 
 	logSeverityInfo    logSeverity = "Info"
 	logSeverityWarning logSeverity = "Warning"
@@ -16,7 +16,7 @@ const (
 )
 
 func formatWireGuardLogLine(severity logSeverity, message string) string {
-	timestamp := time.Now().Format(wireGuardLogTimestampFormat)
+	timestamp := time.Now().UTC().Format(wireGuardLogTimestampFormat)
 	return fmt.Sprintf("%s [%s] %s", timestamp, severity, message)
 }
 
diff --git a/backend/wireguard/wireguard_lifecycle_test.go b/backend/wireguard/wireguard_lifecycle_test.go
index 0dae9cc..0c8c1c1 100644
--- a/backend/wireguard/wireguard_lifecycle_test.go
+++ b/backend/wireguard/wireguard_lifecycle_test.go
@@ -163,7 +163,7 @@ func TestWireGuardNewInitializesWithSingleConfigureCallIncludingPeers(t *testing
 
 	select {
 	case startupLog := <-wg.Logs():
-		pattern := regexp.MustCompile(`^\d{4}/\d{2}/\d{2} \d{2}:\d{2}:\d{2}\.\d{6} \[Info\] WireGuard interface wg-test initialized successfully$`)
+		pattern := regexp.MustCompile(`^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d+Z \[Info\] WireGuard interface wg-test initialized successfully$`)
 		if !pattern.MatchString(startupLog) {
 			t.Fatalf("expected startup log with timestamp prefix, got %q", startupLog)
 		}

From 0bab76d9320fddd60ed238d4f6614e9b1a0e6516 Mon Sep 17 00:00:00 2001
From: Rerowros <85008083+Rerowros@users.noreply.github.com>
Date: Mon, 11 May 2026 22:17:21 +0700
Subject: [PATCH 2/2] fix(wireguard): keep UTC logs in standard format

---
 backend/wireguard/log.go                      | 2 +-
 backend/wireguard/wireguard_lifecycle_test.go | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/backend/wireguard/log.go b/backend/wireguard/log.go
index 52bb3e6..2b55fa5 100644
--- a/backend/wireguard/log.go
+++ b/backend/wireguard/log.go
@@ -8,7 +8,7 @@ import (
 type logSeverity string
 
 const (
-	wireGuardLogTimestampFormat = "2006-01-02T15:04:05.000000Z07:00"
+	wireGuardLogTimestampFormat = "2006/01/02 15:04:05"
 
 	logSeverityInfo    logSeverity = "Info"
 	logSeverityWarning logSeverity = "Warning"
diff --git a/backend/wireguard/wireguard_lifecycle_test.go b/backend/wireguard/wireguard_lifecycle_test.go
index 0c8c1c1..b7dd2d6 100644
--- a/backend/wireguard/wireguard_lifecycle_test.go
+++ b/backend/wireguard/wireguard_lifecycle_test.go
@@ -163,7 +163,7 @@ func TestWireGuardNewInitializesWithSingleConfigureCallIncludingPeers(t *testing
 
 	select {
 	case startupLog := <-wg.Logs():
-		pattern := regexp.MustCompile(`^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d+Z \[Info\] WireGuard interface wg-test initialized successfully$`)
+		pattern := regexp.MustCompile(`^\d{4}/\d{2}/\d{2} \d{2}:\d{2}:\d{2} \[Info\] WireGuard interface wg-test initialized successfully$`)
 		if !pattern.MatchString(startupLog) {
 			t.Fatalf("expected startup log with timestamp prefix, got %q", startupLog)
 		}