fix(warp): surface update-clock persistence failures (#6209)

Co-authored-by: n0ctal <293235942+n0ctal@users.noreply.github.com>

internal/web/job/warp_ip_job.go

@@ -28,13 +28,19 @@ func (j *WarpIpJob) Run() {
 		return
 	}
 
-	lastUpdate, _ := j.settingService.GetWarpLastUpdate()
+	lastUpdate, err := j.settingService.GetWarpLastUpdate()
+	if err != nil {
+		logger.Warning("Failed to read scheduled WARP IP update time: ", err)
+		return
+	}
 	now := time.Now().Unix()
 
 	// First run after the feature is enabled (e.g. interval set via direct
 	// DB edit): establish a baseline instead of rotating immediately.
 	if lastUpdate == 0 {
-		_ = j.settingService.SetWarpLastUpdate(now)
+		if err := j.settingService.SetWarpLastUpdate(now); err != nil {
+			logger.Warning("Failed to establish scheduled WARP IP update time: ", err)
+		}
 		return
 	}
 
@@ -46,7 +52,9 @@ func (j *WarpIpJob) Run() {
 			return
 		}
 
-		_ = j.settingService.SetWarpLastUpdate(now)
+		if err := j.settingService.SetWarpLastUpdate(now); err != nil {
+			logger.Warning("WARP IP changed but the next-update time was not saved: ", err)
+		}
 		j.xrayService.SetToNeedRestart()
 		logger.Info("Successfully updated WARP IP and scheduled Xray restart")
 	}

internal/web/job/warp_ip_job_test.go

@@ -0,0 +1,29 @@
+package job
+
+import (
+	"testing"
+
+	"github.com/mhsanaei/3x-ui/v3/internal/database"
+	"github.com/mhsanaei/3x-ui/v3/internal/database/model"
+	"github.com/mhsanaei/3x-ui/v3/internal/web/service"
+)
+
+func TestWarpIpJobInitializesMissingLastUpdate(t *testing.T) {
+	setupIntegrationDB(t)
+
+	settings := service.SettingService{}
+	if err := settings.SetWarpUpdateInterval(1); err != nil {
+		t.Fatalf("enable scheduled WARP rotation: %v", err)
+	}
+
+	job := &WarpIpJob{settingService: settings}
+	job.Run()
+
+	var stored model.Setting
+	if err := database.GetDB().Where("key = ?", "warpLastUpdate").First(&stored).Error; err != nil {
+		t.Fatalf("scheduled WARP rotation did not establish its baseline: %v", err)
+	}
+	if stored.Value == "" || stored.Value == "0" {
+		t.Fatalf("warpLastUpdate = %q, want a non-zero baseline", stored.Value)
+	}
+}