Add onramper widget for buy screen (#571)

lib/di.dart

@@ -4,6 +4,7 @@ import 'package:cake_wallet/entities/wake_lock.dart';
 import 'package:cake_wallet/ionia/ionia_anypay.dart';
 import 'package:cake_wallet/ionia/ionia_gift_card.dart';
 import 'package:cake_wallet/ionia/ionia_tip.dart';
+import 'package:cake_wallet/src/screens/buy/onramper_page.dart';
 import 'package:cake_wallet/src/screens/ionia/cards/ionia_custom_redeem_page.dart';
 import 'package:cake_wallet/src/screens/ionia/cards/ionia_gift_card_detail_page.dart';
 import 'package:cake_wallet/src/screens/ionia/cards/ionia_more_options_page.dart';
@@ -482,6 +483,10 @@ Future setup(
   getIt.registerFactory(
       () => NodeCreateOrEditPage(getIt.get<NodeCreateOrEditViewModel>()));
 
+  getIt.registerFactory(() => OnRamperPage(
+    settingsStore: getIt.get<AppStore>().settingsStore,
+    wallet: getIt.get<AppStore>().wallet!));
+
   getIt.registerFactory(() => ExchangeViewModel(
       getIt.get<AppStore>().wallet!,
       _tradesSource,

lib/router.dart

@@ -3,6 +3,7 @@ import 'package:cake_wallet/buy/order.dart';
 import 'package:cake_wallet/src/screens/backup/backup_page.dart';
 import 'package:cake_wallet/src/screens/backup/edit_backup_password_page.dart';
 import 'package:cake_wallet/src/screens/buy/buy_webview_page.dart';
+import 'package:cake_wallet/src/screens/buy/onramper_page.dart';
 import 'package:cake_wallet/src/screens/buy/pre_order_page.dart';
 import 'package:cake_wallet/src/screens/ionia/cards/ionia_account_cards_page.dart';
 import 'package:cake_wallet/src/screens/ionia/cards/ionia_account_page.dart';
@@ -471,6 +472,9 @@ Route<dynamic> createRoute(RouteSettings settings) {
         param1: paymentInfo,
         param2: commitedInfo));
 
+    case Routes.onramperPage:
+      return CupertinoPageRoute<void>(builder: (_) => getIt.get<OnRamperPage>());
+
     default:
       return MaterialPageRoute<void>(
           builder: (_) => Scaffold(

lib/routes.dart

@@ -76,4 +76,5 @@ class Routes {
   static const ioniaPaymentStatusPage = '/ionia_payment_status_page';
   static const ioniaMoreOptionsPage = '/ionia_more_options_page';
   static const ioniaCustomRedeemPage = '/ionia_custom_redeem_page';
+  static const onramperPage = '/onramper';
 }

lib/src/screens/buy/onramper_page.dart

@@ -0,0 +1,82 @@
+import 'dart:io';
+import 'package:cake_wallet/generated/i18n.dart';
+import 'package:cake_wallet/src/screens/base_page.dart';
+import 'package:cake_wallet/store/settings_store.dart';
+import 'package:cw_core/wallet_base.dart';
+import 'package:flutter/material.dart';
+import 'package:webview_flutter/webview_flutter.dart';
+import 'package:cake_wallet/.secrets.g.dart' as secrets;
+
+class OnRamperPage extends BasePage {
+  OnRamperPage({
+      required this.settingsStore,
+      required this.wallet});
+
+  final SettingsStore settingsStore;
+  final WalletBase wallet;
+
+  @override
+  String get title => S.current.buy;
+
+  @override
+  Widget body(BuildContext context) {
+    final darkMode = Theme.of(context).brightness == Brightness.dark;
+    return OnRamperPageBody(
+        settingsStore: settingsStore,
+        wallet: wallet,
+        darkMode: darkMode,
+        backgroundColor: darkMode
+          ? backgroundDarkColor
+          : backgroundLightColor,
+        supportSell: false);
+  }
+}
+
+class OnRamperPageBody extends StatefulWidget {
+  OnRamperPageBody({
+    required this.settingsStore,
+    required this.wallet,
+    required this.darkMode,
+    required this.supportSell,
+    required this.backgroundColor});
+
+  static const baseUrl = 'widget.onramper.com';
+  final SettingsStore settingsStore;
+  final WalletBase wallet;
+  final Color backgroundColor;
+  final bool darkMode;
+  final bool supportSell;
+
+  Uri get uri
+    => Uri.https(
+      baseUrl,
+      '',
+      <String, dynamic>{
+        'apiKey': secrets.onramperApiKey,
+        'defaultCrypto': wallet.currency.title,
+        'defaultFiat': settingsStore.fiatCurrency.title,
+        'wallets': '${wallet.currency.title}:${wallet.walletAddresses.address}',
+        'darkMode': darkMode.toString(),
+        'supportSell': supportSell.toString()});
+
+  @override
+  OnRamperPageBodyState createState() => OnRamperPageBodyState();
+}
+
+class OnRamperPageBodyState extends State<OnRamperPageBody> {
+  OnRamperPageBodyState();
+
+  @override
+  void initState() {
+    super.initState();
+    if (Platform.isAndroid) WebView.platform = SurfaceAndroidWebView();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return WebView(
+        initialUrl: widget.uri.toString(),
+        backgroundColor: widget.backgroundColor,
+        javascriptMode: JavascriptMode.unrestricted);
+  }
+}

lib/src/screens/dashboard/dashboard_page.dart

@@ -271,10 +271,10 @@ class DashboardPage extends BasePage {
 
     switch (walletType) {
       case WalletType.bitcoin:
-        Navigator.of(context).pushNamed(Routes.preOrder);
+        Navigator.of(context).pushNamed(Routes.onramperPage);
         break;
       case WalletType.litecoin:
-        Navigator.of(context).pushNamed(Routes.preOrder);
+        Navigator.of(context).pushNamed(Routes.onramperPage);
         break;
       default:
         await showPopUp<void>(

tool/utils/secret_key.dart

@@ -25,7 +25,8 @@ class SecretKey {
     SecretKey('moonPaySecretKey', () => ''),
     SecretKey('sideShiftAffiliateId', () => ''),
     SecretKey('sideShiftApiKey', () => ''),
-    SecretKey('simpleSwapApiKey', () => '')
+    SecretKey('simpleSwapApiKey', () => ''),
+    SecretKey('onramperApiKey', () => ''),
   ];
 
   final String name;