+ quotation provider

frontend/pshared/lib/api/requests/payment/base.dart

@@ -0,0 +1,20 @@
+import 'package:json_annotation/json_annotation.dart';
+
+
+part 'base.g.dart';
+
+
+@JsonSerializable()
+class PaymentBaseRequest {
+  final String idempotencyKey;
+  final Map<String, String>? metadata;
+
+  const PaymentBaseRequest({
+    required this.idempotencyKey,
+    this.metadata,
+  });
+
+  factory PaymentBaseRequest.fromJson(Map<String, dynamic> json) => _$PaymentBaseRequestFromJson(json);
+  Map<String, dynamic> toJson() => _$PaymentBaseRequestToJson(this);
+
+}

frontend/pshared/lib/api/requests/payment/initiate.dart

@@ -0,0 +1,24 @@
+import 'package:json_annotation/json_annotation.dart';
+
+import 'package:pshared/api/requests/payment/base.dart';
+import 'package:pshared/data/dto/payment/intent/payment.dart';
+
+part 'initiate.g.dart';
+
+
+@JsonSerializable()
+class InitiatePaymentRequest extends PaymentBaseRequest {
+  final PaymentIntentDTO? intent;
+  final String? quoteRef;
+
+  const InitiatePaymentRequest({
+    required super.idempotencyKey,
+    super.metadata,
+    this.intent,
+    this.quoteRef,
+  });
+
+  factory InitiatePaymentRequest.fromJson(Map<String, dynamic> json) => _$InitiatePaymentRequestFromJson(json);
+  @override
+  Map<String, dynamic> toJson() => _$InitiatePaymentRequestToJson(this);
+}

frontend/pshared/lib/api/requests/payment/quote.dart

@@ -0,0 +1,26 @@
+import 'package:json_annotation/json_annotation.dart';
+import 'package:pshared/api/requests/payment/base.dart';
+
+import 'package:pshared/data/dto/payment/intent/payment.dart';
+
+part 'quote.g.dart';
+
+
+@JsonSerializable()
+class QuotePaymentRequest extends PaymentBaseRequest {
+  final PaymentIntentDTO intent;
+
+  @JsonKey(defaultValue: false)
+  final bool previewOnly;
+
+  const QuotePaymentRequest({
+    required super.idempotencyKey,
+    super.metadata,
+    required this.intent,
+    this.previewOnly = false,
+  });
+
+  factory QuotePaymentRequest.fromJson(Map<String, dynamic> json) => _$QuotePaymentRequestFromJson(json);
+  @override
+  Map<String, dynamic> toJson() => _$QuotePaymentRequestToJson(this);
+}

frontend/pshared/lib/api/responses/payment/quotation.dart

@@ -0,0 +1,20 @@
+import 'package:json_annotation/json_annotation.dart';
+
+import 'package:pshared/api/responses/base.dart';
+import 'package:pshared/api/responses/token.dart';
+import 'package:pshared/data/dto/payment/payment_quote.dart';
+
+part 'quotation.g.dart';
+
+
+@JsonSerializable(explicitToJson: true)
+class PaymentQuoteResponse extends BaseAuthorizedResponse {
+
+  final PaymentQuoteDTO quote;
+
+  const PaymentQuoteResponse({required super.accessToken, required this.quote});
+
+  factory PaymentQuoteResponse.fromJson(Map<String, dynamic> json) => _$PaymentQuoteResponseFromJson(json);
+  @override
+  Map<String, dynamic> toJson() => _$PaymentQuoteResponseToJson(this);
+}