Frontend first draft

frontend/pweb/lib/providers/page_selector.dart

@@ -0,0 +1,99 @@
+import 'package:flutter/material.dart';
+
+import 'package:pshared/models/payment/type.dart';
+import 'package:pshared/models/recipient/recipient.dart';
+
+import 'package:pweb/models/wallet.dart';
+import 'package:pweb/providers/wallets.dart';
+import 'package:pweb/widgets/sidebar/destinations.dart';
+import 'package:pweb/services/amplitude.dart';
+import 'package:pweb/providers/recipient.dart';
+
+
+class PageSelectorProvider extends ChangeNotifier {
+  PayoutDestination _selected = PayoutDestination.dashboard;
+  PaymentType? _type;
+  bool _cameFromRecipientList = false;
+
+  final RecipientProvider? recipientProvider;
+  final WalletsProvider? walletsProvider;
+
+  PayoutDestination get selected => _selected;
+  PaymentType? get type => _type;
+
+  PageSelectorProvider({this.recipientProvider, this.walletsProvider});
+
+  void selectPage(PayoutDestination dest) {
+    _selected = dest;
+    notifyListeners();
+  }
+
+  void selectRecipient(Recipient? recipient, {bool fromList = false}) {
+    if (recipientProvider != null) {
+      recipientProvider!.selectRecipient(recipient);
+      _cameFromRecipientList = fromList;
+      _selected = PayoutDestination.payment;
+      notifyListeners();
+    } else {
+      debugPrint("RecipientProvider is null — cannot select recipient");
+    }
+  }
+
+  void editRecipient(Recipient? recipient, {bool fromList = false}) {
+    if (recipientProvider != null) {
+      recipientProvider!.selectRecipient(recipient);
+      _cameFromRecipientList = fromList;
+      _selected = PayoutDestination.addrecipient;
+      notifyListeners();
+    } else {
+      debugPrint("RecipientProvider is null — cannot select recipient");
+    }
+  }
+
+  void goToAddRecipient() {
+    if (recipientProvider != null) {
+      AmplitudeService.recipientAddStarted();
+      recipientProvider!.selectRecipient(null);
+      _selected = PayoutDestination.addrecipient;
+      _cameFromRecipientList = false;
+      notifyListeners();
+    } else {
+      debugPrint("RecipientProvider is null — cannot go to add recipient");
+    }
+  }
+
+  void startPaymentWithoutRecipient(PaymentType type) {
+    if (recipientProvider != null) {
+      recipientProvider!.selectRecipient(null);
+    }
+    _type = type;
+    _cameFromRecipientList = false;
+    _selected = PayoutDestination.payment;
+    notifyListeners();
+  }
+
+  void goBackFromPayment() {
+    _selected = _cameFromRecipientList
+        ? PayoutDestination.recipients
+        : PayoutDestination.dashboard;
+    _type = null;
+    notifyListeners();
+  }
+
+  void goBackFromWalletEdit() {
+    selectPage(PayoutDestination.methods);
+  }
+
+  void selectWallet(Wallet wallet) {
+    if (walletsProvider != null) {
+      walletsProvider!.selectWallet(wallet);
+      _selected = PayoutDestination.editwallet;
+      notifyListeners();
+    } else {
+      debugPrint("RecipientProvider is null — cannot select wallet");
+    }
+  }
+
+  Recipient? get selectedRecipient => recipientProvider?.selectedRecipient;
+  Wallet? get selectedWallet => walletsProvider?.selectedWallet;
+}