production runtime and mock removal

backend/internal/httpapi/billing.go

@@ -5,6 +5,7 @@ import (
 	"errors"
 	"math"
 	"net/http"
+	"strconv"
 	"strings"
 
 	"git.nianxx.cn/wangxuming/NianAIGC/backend/internal/billing"
@@ -301,7 +302,18 @@ func (h *billingHandler) authorize(w http.ResponseWriter, r *http.Request, requi
 }
 func decodeJSON(r *http.Request, value any) { _ = json.NewDecoder(r.Body).Decode(value) }
 func billingString(value any) string        { text, _ := value.(string); return strings.TrimSpace(text) }
-func numberValue(value any) float64         { number, _ := value.(float64); return number }
+func numberValue(value any) float64 {
+	switch number := value.(type) {
+	case float64:
+		return number
+	case string:
+		parsed, err := strconv.ParseFloat(strings.TrimSpace(number), 64)
+		if err == nil && !math.IsNaN(parsed) && !math.IsInf(parsed, 0) {
+			return parsed
+		}
+	}
+	return 0
+}
 func first(value, fallback string) string {
 	if value != "" {
 		return value
@@ -326,6 +338,10 @@ func writeAuthError(w http.ResponseWriter, err error) {
 }
 func writeDomainError(w http.ResponseWriter, err error) {
 	status := billing.HTTPStatus(err)
+	if status == http.StatusServiceUnavailable {
+		writeAPIError(w, status, "计费服务暂不可用，请联系管理员。")
+		return
+	}
 	if status >= 500 {
 		writeAPIError(w, 500, "服务器内部错误。")
 		return