prototype complete

lib/screens/pay/pay_controller.dart

@@ -1,17 +1,41 @@
+import 'package:dio/dio.dart';
 import 'package:flutter/material.dart';
 import 'package:freezed_annotation/freezed_annotation.dart';
+import 'package:provider/provider.dart';
+import 'package:shared_preferences/shared_preferences.dart';
 import 'package:qpay/http/http.dart';
 import 'package:qpay/screens/home/home_controller.dart' as hc;
+import 'package:qpay/screens/transaction_controller.dart';
+import 'package:qpay/screens/transaction_controller.dart' as tc;
 
 part 'pay_controller.freezed.dart';
 part 'pay_controller.g.dart';
 
 class PayScreenModel {
   List<BillProduct> products = [];
-  late BillProduct selectedProduct;
-  dynamic formData = {};
+  List<PaymentProcessor> paymentProcessors = [];
+  hc.BillProvider? selectedProvider;
+  BillProduct? selectedProduct;
+  PaymentProcessor? selectedPaymentProcessor;
   bool isLoading = false;
   String? errorMessage;
+  String? status;
+}
+
+@freezed
+abstract class PaymentProcessor with _$PaymentProcessor {
+  const factory PaymentProcessor({
+    required String name,
+    required String description,
+    required String image,
+    required String accountFieldName,
+    required String accountFieldLabel,
+    required String label,
+    required String authType,
+  }) = _PaymentProcessor;
+
+  factory PaymentProcessor.fromJson(Map<String, dynamic> json) =>
+      _$PaymentProcessorFromJson(json);
 }
 
 @freezed
@@ -32,13 +56,94 @@ abstract class BillProduct with _$BillProduct {
 class PayController extends ChangeNotifier {
   final PayScreenModel model = PayScreenModel();
   final Http http = Http();
+  late SharedPreferences prefs;
+  late TransactionController transactionController;
+  BuildContext context;
 
-  void updateSelectedProduct(BillProduct product) {
-    model.selectedProduct = product;
+  PayController(this.context) {
+    transactionController = Provider.of<TransactionController>(
+      context,
+      listen: false,
+    );
+    model.selectedProvider = transactionController.model.selectedProvider;
+    model.selectedProduct = transactionController.model.selectedProduct;
+  }
+
+  void _showErrorSnackBar(String? message) {
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(
+          content: Text(message.toString()),
+          behavior: SnackBarBehavior.floating,
+          backgroundColor: Colors.deepOrange,
+        ),
+      );
+    });
+  }
+
+  // formData can come from a repeat transaction
+  // otherwise build it from elements of the normal flow
+  Future<void> doTransaction([tc.FormData? formData]) async {
+    try {
+      model.isLoading = true;
+      notifyListeners();
+
+      prefs = await SharedPreferences.getInstance();
+
+      transactionController.model.formData =
+          formData ??
+          transactionController.model.formData.copyWith(
+            type: "CONFIRM",
+            billClientId: model.selectedProvider?.clientId ?? '',
+            debitRef: 'peak',
+            debitCurrency: 'USD',
+            creditAccount: transactionController.model.formData.creditAccount,
+            creditPhone: transactionController.model.formData.creditPhone,
+            billName: model.selectedProvider?.name ?? '',
+            paymentProcessorLabel: model.selectedPaymentProcessor?.label ?? '',
+            paymentProcessorName: model.selectedPaymentProcessor?.name ?? '',
+            paymentProcessorImage: model.selectedPaymentProcessor?.image ?? '',
+            providerImage: model.selectedProvider?.image ?? '',
+            providerLabel: model.selectedProvider?.label ?? '',
+            userId: prefs.getString("userId") ?? '',
+            creditName: transactionController.model.formData.creditName,
+            creditEmail: transactionController.model.formData.creditEmail,
+            productUid: model.selectedProduct?.uid,
+          );
+
+      dynamic response = await http.post(
+        '/transaction',
+        transactionController.model.formData,
+      );
+      logger.i(response.toString());
+
+      if (response['status'] == 'SUCCESS') {
+        model.status = response['status'];
+
+        transactionController.updateConfirmationData(response);
+      } else {
+        model.status = response['status'];
+        model.errorMessage =
+            response['errorMessage'] ??
+            "Problem with the transaction. Please try again or contact support";
+        _showErrorSnackBar(model.errorMessage);
+      }
+    } on DioException catch (e, s) {
+      logger.e(s);
+      _showErrorSnackBar("Network error. Please try again or contact support");
+    } catch (e, s) {
+      logger.e(s);
+      _showErrorSnackBar(
+        "Problem processing that transaction. Please try again or contact support",
+      );
+    }
+
+    model.isLoading = false;
     notifyListeners();
   }
 
   Future<void> getProducts(String providerId) async {
+    model.products = getFakeProducts();
     try {
       model.isLoading = true;
 
@@ -48,11 +153,86 @@ class PayController extends ChangeNotifier {
       model.products = response.map((e) => BillProduct.fromJson(e)).toList();
     } catch (e) {
       logger.e(e);
-      model.errorMessage = e.toString();
+      _showErrorSnackBar(
+        "Problem fetching products, are you connected to the internet?",
+      );
     }
 
     model.isLoading = false;
     notifyListeners();
   }
 
+  Future<void> getPaymentProcessors() async {
+    try {
+      model.isLoading = true;
+      model.paymentProcessors = getFakePaymentProcessors();
+      notifyListeners();
+
+      List<dynamic> response = await http.get('/payment-processors');
+      model.paymentProcessors =
+          response.map((e) => PaymentProcessor.fromJson(e)).toList();
+
+      notifyListeners();
+    } catch (e) {
+      logger.e(e);
+      _showErrorSnackBar(
+        "Problem fetching payment processors, are you connected to the internet?",
+      );
+    }
+  }
+
+  void updateAdditionalRecipientDetails(String name, String email) {
+    transactionController.model.formData = transactionController.model.formData
+        .copyWith(creditName: name, creditEmail: email);
+    notifyListeners();
+  }
+
+  void updatePhone(String phone) {
+    transactionController.model.formData = transactionController.model.formData
+        .copyWith(creditPhone: phone);
+    notifyListeners();
+  }
+
+  void updateAmount(String amount) {
+    transactionController.model.formData = transactionController.model.formData
+        .copyWith(amount: amount);
+    notifyListeners();
+  }
+
+  void updateSelectedProduct(BillProduct product) {
+    model.selectedProduct = product;
+    notifyListeners();
+  }
+
+  void updateSelectedPaymentProcessor(PaymentProcessor processor) {
+    model.selectedPaymentProcessor = processor;
+    notifyListeners();
+  }
+
+  List<PaymentProcessor> getFakePaymentProcessors() {
+    return [
+      PaymentProcessor(
+        name: "EcoCash",
+        description: "Pay using your mobile wallet.",
+        image: "ecocash.png",
+        accountFieldName: "phoneNumber",
+        accountFieldLabel: "EcoCash Phone Number",
+        label: "ECOCASH",
+        authType: "REMOTE",
+      ),
+    ];
+  }
+
+  List<BillProduct> getFakeProducts() {
+    return [
+      BillProduct(
+        uid: '1',
+        name: 'Product 1',
+        description: 'Description 1',
+        displayName: 'Product 1',
+        defaultAmount: 100,
+        requiresAmount: true,
+      ),
+    ];
+  }
 }