马良AI写作初始化仓库

AINoval/lib/services/api_service/base/api_exception.dart

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+/// API异常类
+class ApiException implements Exception {
+  ApiException(this.statusCode, this.message);
+  final int statusCode;
+  final String message;
+  
+  @override
+  String toString() => 'ApiException: $statusCode - $message';
+}
+
+
+
+/// 🚀 新增：积分不足异常
+/// 当用户积分余额不足时抛出
+class InsufficientCreditsException extends ApiException {
+  final int? requiredCredits;
+  
+  InsufficientCreditsException(String message, [this.requiredCredits])
+      : super(402, message); // HTTP 402 Payment Required
+  
+  /// 从错误消息中提取需要的积分数量
+  static int? extractRequiredCredits(String message) {
+    final regex = RegExp(r'需要 (\d+) 积分');
+    final match = regex.firstMatch(message);
+    if (match != null) {
+      return int.tryParse(match.group(1) ?? '');
+    }
+    return null;
+  }
+  
+  /// 创建带有自动提取积分数量的实例
+  factory InsufficientCreditsException.fromMessage(String message) {
+    final requiredCredits = extractRequiredCredits(message);
+    return InsufficientCreditsException(message, requiredCredits);
+  }
+}