cursor从大到小获取

go/controllers/platform_cursor_equipment.go

@@ -520,6 +520,56 @@ func (c *PlatformCursorEquipmentController) List() {
 	})
 }
 
+// Stats GET /platform/cursor/equipment/stats
+// 全量设备统计（不受分页与列表筛选影响）
+func (c *PlatformCursorEquipmentController) Stats() {
+	if _, err := c.platformClaims(); err != nil {
+		c.jsonErr(401, 401, err.Error())
+		return
+	}
+
+	onlineSince := time.Now().Add(-5 * time.Minute)
+	type statsRow struct {
+		Total    int64
+		Inactive int64
+		Active   int64
+		Expired  int64
+		Disabled int64
+		Online   int64
+	}
+
+	var row statsRow
+	err := models.Orm.Raw(
+		"SELECT COUNT(*) AS total,"+
+			" SUM(CASE WHEN status = 0 THEN 1 ELSE 0 END) AS inactive,"+
+			" SUM(CASE WHEN status = 1 THEN 1 ELSE 0 END) AS active,"+
+			" SUM(CASE WHEN status = 2 THEN 1 ELSE 0 END) AS expired,"+
+			" SUM(CASE WHEN status = 3 THEN 1 ELSE 0 END) AS disabled,"+
+			" SUM(CASE WHEN last_heartbeat_at IS NOT NULL AND last_heartbeat_at >= ? THEN 1 ELSE 0 END) AS online"+
+			" FROM yz_platform_cursor_equipment WHERE delete_time IS NULL",
+		onlineSince,
+	).QueryRow(&row)
+	if err != nil {
+		c.jsonErr(500, 500, "获取设备统计失败: "+err.Error())
+		return
+	}
+
+	offline := row.Total - row.Online
+	if offline < 0 {
+		offline = 0
+	}
+
+	c.ok(map[string]interface{}{
+		"total":    row.Total,
+		"online":   row.Online,
+		"offline":  offline,
+		"active":   row.Active,
+		"inactive": row.Inactive,
+		"expired":  row.Expired,
+		"disabled": row.Disabled,
+	})
+}
+
 // Detail GET /platform/cursor/equipment/detail/:id
 func (c *PlatformCursorEquipmentController) Detail() {
 	if _, err := c.platformClaims(); err != nil {