From 2e87bc56a84f99595e1b90274dcee2a2a00ea971 Mon Sep 17 00:00:00 2001
From: dushixiang <dushixiang@typesafe.cn>
Date: Tue, 2 Dec 2025 22:12:23 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8D=E9=94=99=E8=AF=AF=E9=85=8D?=
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---
 internal/repo/agent_repo.go | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/internal/repo/agent_repo.go b/internal/repo/agent_repo.go
index d49013e..4452ed7 100644
--- a/internal/repo/agent_repo.go
+++ b/internal/repo/agent_repo.go
@@ -22,13 +22,17 @@ func NewAgentRepo(db *gorm.DB) *AgentRepo {
 
 // UpdateStatus 更新探针状态
 func (r *AgentRepo) UpdateStatus(ctx context.Context, agentID string, status int, lastSeenAt int64) error {
+	m := map[string]interface{}{
+		"status": status,
+	}
+	if lastSeenAt > 0 {
+		m["last_seen_at"] = lastSeenAt
+	}
+
 	return r.db.WithContext(ctx).
 		Model(&models.Agent{}).
 		Where("id = ?", agentID).
-		Updates(map[string]interface{}{
-			"status":       status,
-			"last_seen_at": lastSeenAt,
-		}).Error
+		Updates(m).Error
 }
 
 // FindOnlineAgents 查找所有在线探针