CW-532-DFX-buy-provider (#1209)

* dfx buy provider ui

* fix signing flow

* fixed provider determination based on wallet type and app settings

* update localization files

* minor fix

* Fix BTC, LTC und BCH signMessages

* Add signMessage to monero

* open dfx in webview

* Update dfx_buy_provider.dart

* Revert merge conflict

* Update bitcoin_flutter ref

---------

Co-authored-by: Konstantin Ullrich <konstantinullrich12@gmail.com>

lib/src/screens/buy/buy_options_page.dart

@@ -1,18 +1,26 @@
+import 'package:cake_wallet/buy/dfx/dfx_buy_provider.dart';
 import 'package:cake_wallet/buy/onramper/onramper_buy_provider.dart';
 import 'package:cake_wallet/buy/robinhood/robinhood_buy_provider.dart';
 import 'package:cake_wallet/di.dart';
+import 'package:cake_wallet/entities/buy_provider_types.dart';
 import 'package:cake_wallet/generated/i18n.dart';
 import 'package:cake_wallet/src/screens/base_page.dart';
 import 'package:cake_wallet/src/widgets/option_tile.dart';
 import 'package:cake_wallet/themes/extensions/option_tile_theme.dart';
 import 'package:cake_wallet/themes/extensions/transaction_trade_theme.dart';
+import 'package:cake_wallet/view_model/dashboard/dashboard_view_model.dart';
 import 'package:flutter/material.dart';
 
 class BuyOptionsPage extends BasePage {
+  BuyOptionsPage(this.dashboardViewModel);
+
+  final DashboardViewModel dashboardViewModel;
   final iconDarkRobinhood = 'assets/images/robinhood_dark.png';
   final iconLightRobinhood = 'assets/images/robinhood_light.png';
   final iconDarkOnramper = 'assets/images/onramper_dark.png';
   final iconLightOnramper = 'assets/images/onramper_light.png';
+  final iconDarkDFX = 'assets/images/dfx_dark.png';
+  final iconLightDFX = 'assets/images/dfx_light.png';
 
   @override
   String get title => S.current.buy;
@@ -22,11 +30,19 @@ class BuyOptionsPage extends BasePage {
 
   @override
   Widget body(BuildContext context) {
-    final isLightMode = Theme.of(context).extension<OptionTileTheme>()?.useDarkImage ?? false;
-    final iconRobinhood =
-        Image.asset(isLightMode ? iconLightRobinhood : iconDarkRobinhood, height: 40, width: 40);
-    final iconOnramper =
-        Image.asset(isLightMode ? iconLightOnramper : iconDarkOnramper, height: 40, width: 40);
+    final isLightMode =
+        Theme.of(context).extension<OptionTileTheme>()?.useDarkImage ?? false;
+    final iconRobinhood = Image.asset(
+        isLightMode ? iconLightRobinhood : iconDarkRobinhood,
+        height: 40,
+        width: 40);
+    final iconOnramper = Image.asset(
+        isLightMode ? iconLightOnramper : iconDarkOnramper,
+        height: 40,
+        width: 40);
+    final iconDFX = Image.asset(isLightMode ? iconLightDFX : iconDarkDFX,
+        height: 40, width: 40);
+    final availableProviders = dashboardViewModel.availableProviders;
 
     return Container(
       child: Center(
@@ -34,26 +50,42 @@ class BuyOptionsPage extends BasePage {
           constraints: BoxConstraints(maxWidth: 330),
           child: Column(
             children: [
-              Padding(
-                padding: EdgeInsets.only(top: 24),
-                child: OptionTile(
-                  image: iconOnramper,
-                  title: "Onramper",
-                  description: S.of(context).onramper_option_description,
-                  onPressed: () async =>
-                      await getIt.get<OnRamperBuyProvider>().launchProvider(context),
+              if (availableProviders.contains(BuyProviderType.Onramper))
+                Padding(
+                  padding: EdgeInsets.only(top: 24),
+                  child: OptionTile(
+                    image: iconOnramper,
+                    title: "Onramper",
+                    description: S.of(context).onramper_option_description,
+                    onPressed: () async => await getIt
+                        .get<OnRamperBuyProvider>()
+                        .launchProvider(context),
+                  ),
                 ),
-              ),
-              Padding(
-                padding: EdgeInsets.only(top: 24),
-                child: OptionTile(
-                  image: iconRobinhood,
-                  title: "Robinhood Connect",
-                  description: S.of(context).robinhood_option_description,
-                  onPressed: () async =>
-                  await getIt.get<RobinhoodBuyProvider>().launchProvider(context),
+              if (availableProviders.contains(BuyProviderType.Robinhood))
+                Padding(
+                  padding: EdgeInsets.only(top: 24),
+                  child: OptionTile(
+                    image: iconRobinhood,
+                    title: "Robinhood Connect",
+                    description: S.of(context).robinhood_option_description,
+                    onPressed: () async => await getIt
+                        .get<RobinhoodBuyProvider>()
+                        .launchProvider(context),
+                  ),
+                ),
+              if (availableProviders.contains(BuyProviderType.DFX))
+                Padding(
+                  padding: EdgeInsets.only(top: 24),
+                  child: OptionTile(
+                    image: iconDFX,
+                    title: "DFX Connect",
+                    description: S.of(context).dfx_option_description,
+                    onPressed: () async => await getIt
+                        .get<DFXBuyProvider>()
+                        .launchProvider(context),
+                  ),
                 ),
-              ),
               Spacer(),
               Padding(
                 padding: EdgeInsets.fromLTRB(24, 24, 24, 32),
@@ -63,7 +95,9 @@ class BuyOptionsPage extends BasePage {
                   style: TextStyle(
                     fontSize: 14,
                     fontWeight: FontWeight.normal,
-                    color: Theme.of(context).extension<TransactionTradeTheme>()!.detailsTitlesColor,
+                    color: Theme.of(context)
+                        .extension<TransactionTradeTheme>()!
+                        .detailsTitlesColor,
                   ),
                 ),
               ),

lib/src/screens/settings/other_settings_page.dart

@@ -1,5 +1,3 @@
-import 'package:cake_wallet/buy/buy_provider.dart';
-import 'package:cake_wallet/entities/buy_provider_types.dart';
 import 'package:cake_wallet/entities/priority_for_wallet_type.dart';
 import 'package:cake_wallet/generated/i18n.dart';
 import 'package:cake_wallet/routes.dart';
@@ -42,9 +40,10 @@ class OtherSettingsPage extends BasePage {
                   handler: (BuildContext context) =>
                       Navigator.of(context).pushNamed(Routes.changeRep),
                 ),
+              if(_otherSettingsViewModel.isEnabledBuyAction)
               SettingsPickerCell(
                 title: S.current.default_buy_provider,
-                items: BuyProviderType.values,
+                items: _otherSettingsViewModel.availableBuyProviders,
                 displayItem: _otherSettingsViewModel.getBuyProviderType,
                 selectedItem: _otherSettingsViewModel.buyProviderType,
                 onItemSelected: _otherSettingsViewModel.onBuyProviderTypeSelected,