马良AI写作初始化仓库

AINoval/lib/models/admin/billing_models.dart

@@ -0,0 +1,54 @@
+class CreditTransactionModel {
+  final String traceId;
+  final String? userId;
+  final String? provider;
+  final String? modelId;
+  final String? featureType;
+  final int? inputTokens;
+  final int? outputTokens;
+  final int? creditsDeducted;
+  final String status; // PENDING, DEDUCTED, FAILED, COMPENSATED
+  final String? errorMessage;
+  final String? reversalOfTraceId;
+  final String? operatorUserId;
+  final String? auditNote;
+  final String? createdAt; // ISO8601 from backend
+
+  CreditTransactionModel({
+    required this.traceId,
+    required this.status,
+    this.userId,
+    this.provider,
+    this.modelId,
+    this.featureType,
+    this.inputTokens,
+    this.outputTokens,
+    this.creditsDeducted,
+    this.errorMessage,
+    this.reversalOfTraceId,
+    this.operatorUserId,
+    this.auditNote,
+    this.createdAt,
+  });
+
+  factory CreditTransactionModel.fromJson(Map<String, dynamic> json) {
+    return CreditTransactionModel(
+      traceId: (json['traceId'] ?? '').toString(),
+      userId: json['userId']?.toString(),
+      provider: json['provider']?.toString(),
+      modelId: json['modelId']?.toString(),
+      featureType: json['featureType']?.toString(),
+      inputTokens: json['inputTokens'] is int ? json['inputTokens'] as int : int.tryParse('${json['inputTokens'] ?? ''}'),
+      outputTokens: json['outputTokens'] is int ? json['outputTokens'] as int : int.tryParse('${json['outputTokens'] ?? ''}'),
+      creditsDeducted: json['creditsDeducted'] is int ? json['creditsDeducted'] as int : int.tryParse('${json['creditsDeducted'] ?? ''}'),
+      status: (json['status'] ?? '').toString(),
+      errorMessage: json['errorMessage']?.toString(),
+      reversalOfTraceId: json['reversalOfTraceId']?.toString(),
+      operatorUserId: json['operatorUserId']?.toString(),
+      auditNote: json['auditNote']?.toString(),
+      createdAt: json['createdAt']?.toString(),
+    );
+  }
+}
+
+