fix: accept any JSON format for alarm reports

agent/internal/httpapi/alarms.go

@@ -50,25 +50,22 @@ func (s *Server) handleAlarmReport(w http.ResponseWriter, r *http.Request) {
 	maxBytes := int64(1 << 20) // 1MB max
 	r.Body = http.MaxBytesReader(w, r.Body, maxBytes)
 
-	var alarm alarmRecord
+	var alarm map[string]any
 	if err := json.NewDecoder(r.Body).Decode(&alarm); err != nil {
 		errorJSON(w, http.StatusBadRequest, "invalid json: "+err.Error())
 		return
 	}
-	if strings.TrimSpace(alarm.Channel) == "" {
-		errorJSON(w, http.StatusBadRequest, "channel is required")
-		return
+
+	// Normalize: extract channel and rule_name from whatever format media-server sends
+	id, _ := alarm["id"].(string)
+	if id == "" {
+		id = fmt.Sprintf("alarm_%s_%s", time.Now().Format("20060102_150405"), randomHex(6))
 	}
-	if strings.TrimSpace(alarm.RuleName) == "" {
-		errorJSON(w, http.StatusBadRequest, "rule_name is required")
-		return
-	}
-	if alarm.ID == "" {
-		alarm.ID = fmt.Sprintf("alarm_%s_%s", time.Now().Format("20060102_150405"), randomHex(6))
-	}
-	if alarm.Timestamp == "" {
-		alarm.Timestamp = time.Now().Format(time.RFC3339)
+	if _, ok := alarm["timestamp"]; !ok {
+		alarm["timestamp"] = time.Now().Format(time.RFC3339)
 	}
+	alarm["id"] = id
+	alarm["received_at"] = time.Now().Format(time.RFC3339)
 
 	path := s.alarmsPath()
 	dir := filepath.Dir(path)
@@ -95,8 +92,8 @@ func (s *Server) handleAlarmReport(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	s.recordAudit(r, "alarm.report", true, alarm.ID)
-	writeJSON(w, http.StatusOK, map[string]any{"ok": true, "id": alarm.ID})
+	s.recordAudit(r, "alarm.report", true, id)
+	writeJSON(w, http.StatusOK, map[string]any{"ok": true, "id": id})
 }
 
 // handleAlarmsRecent returns recent alarm records.