CAKE-279 | integrated Wyre to the app; added buy button to dashboard page for btc wallet; added buyCryptoCurrency() method to dashboard_view_model.dart

lib/src/screens/dashboard/dashboard_page.dart

@@ -1,3 +1,4 @@
+import 'package:cake_wallet/entities/wallet_type.dart';
 import 'package:cake_wallet/generated/i18n.dart';
 import 'package:cake_wallet/routes.dart';
 import 'package:cake_wallet/themes/theme_base.dart';
@@ -12,6 +13,7 @@ import 'package:cake_wallet/src/screens/dashboard/widgets/address_page.dart';
 import 'package:cake_wallet/src/screens/dashboard/widgets/transactions_page.dart';
 import 'package:cake_wallet/src/screens/dashboard/widgets/sync_indicator.dart';
 import 'package:cake_wallet/view_model/wallet_address_list/wallet_address_list_view_model.dart';
+import 'package:flutter_mobx/flutter_mobx.dart';
 import 'package:smooth_page_indicator/smooth_page_indicator.dart';
 
 class DashboardPage extends BasePage {
@@ -81,7 +83,7 @@ class DashboardPage extends BasePage {
     final exchangeImage = Image.asset('assets/images/transfer.png',
         height: 24.27, width: 22.25,
         color: Theme.of(context).accentTextTheme.display3.backgroundColor);
-    final receiveImage = Image.asset('assets/images/download.png',
+    final buyImage = Image.asset('assets/images/coins.png',
         height: 22.24, width: 24,
         color: Theme.of(context).accentTextTheme.display3.backgroundColor);
     _setEffects();
@@ -111,7 +113,7 @@ class DashboardPage extends BasePage {
             )),
         Container(
           padding: EdgeInsets.only(left: 45, right: 45, bottom: 24),
-          child: Row(
+          child: Observer(builder: (_) => Row(
             mainAxisAlignment: MainAxisAlignment.spaceAround,
             children: <Widget>[
               ActionButton(
@@ -122,8 +124,12 @@ class DashboardPage extends BasePage {
                   image: exchangeImage,
                   title: S.of(context).exchange,
                   route: Routes.exchange),
+              if (walletViewModel.type == WalletType.bitcoin) ActionButton(
+                  image: buyImage,
+                  title: S.of(context).buy,
+                  onClick: () => walletViewModel.buyCryptoCurrency()),
             ],
-          ),
+          )),
         )
       ],
     ));

lib/src/screens/dashboard/widgets/action_button.dart

@@ -3,14 +3,16 @@ import 'package:flutter/material.dart';
 class ActionButton extends StatelessWidget {
   ActionButton(
       {@required this.image,
-      @required this.title,
-      @required this.route,
-      this.alignment = Alignment.center});
+        @required this.title,
+        this.route,
+        this.onClick,
+        this.alignment = Alignment.center});
 
   final Image image;
   final String title;
   final String route;
   final Alignment alignment;
+  final void Function() onClick;
 
   @override
   Widget build(BuildContext context) {
@@ -23,8 +25,10 @@ class ActionButton extends StatelessWidget {
         children: <Widget>[
           GestureDetector(
             onTap: () {
-              if (route.isNotEmpty) {
+              if (route?.isNotEmpty ?? false) {
                 Navigator.of(context, rootNavigator: true).pushNamed(route);
+              } else {
+                onClick?.call();
               }
             },
             child: Container(
@@ -48,4 +52,4 @@ class ActionButton extends StatelessWidget {
       ),
     );
   }
-}
+}

lib/view_model/dashboard/dashboard_view_model.dart

@@ -1,3 +1,6 @@
+import 'dart:convert';
+import 'dart:io';
+
 import 'package:cake_wallet/bitcoin/bitcoin_transaction_info.dart';
 import 'package:cake_wallet/bitcoin/bitcoin_wallet.dart';
 import 'package:cake_wallet/entities/balance.dart';
@@ -20,6 +23,8 @@ import 'package:cake_wallet/view_model/dashboard/trade_list_item.dart';
 import 'package:cake_wallet/view_model/dashboard/transaction_list_item.dart';
 import 'package:cake_wallet/view_model/dashboard/action_list_item.dart';
 import 'package:cake_wallet/view_model/dashboard/action_list_display_mode.dart';
+import 'package:crypto/crypto.dart';
+import 'package:http/http.dart';
 import 'package:mobx/mobx.dart';
 import 'package:cake_wallet/core/wallet_base.dart';
 import 'package:cake_wallet/entities/sync_status.dart';
@@ -30,6 +35,9 @@ import 'package:cake_wallet/store/dashboard/trades_store.dart';
 import 'package:cake_wallet/store/dashboard/trade_filter_store.dart';
 import 'package:cake_wallet/store/dashboard/transaction_filter_store.dart';
 import 'package:cake_wallet/view_model/dashboard/formatted_item_list.dart';
+import 'package:url_launcher/url_launcher.dart';
+import 'package:cake_wallet/.secrets.g.dart' as secrets;
+import 'package:convert/convert.dart';
 
 part 'dashboard_view_model.g.dart';
 
@@ -279,4 +287,34 @@ abstract class DashboardViewModelBase with Store {
             balanceViewModel: balanceViewModel,
             settingsStore: appStore.settingsStore)));
   }
+
+  void buyCryptoCurrency() async {
+    final timestamp = DateTime.now().millisecondsSinceEpoch.toString();
+    final url = 'https://api.testwyre.com/v3/orders/reserve' + '?timestamp=' +
+          timestamp;
+    final apiKey = secrets.wyre_api_key;
+    final secretKey = secrets.wyre_secret_key;
+    final accountId = secrets.wyre_account_id;
+    final body = {
+      'destCurrency' : walletTypeToCryptoCurrency(type).title,
+      'dest' : walletTypeToString(type).toLowerCase() + ':' + address,
+      'referrerAccountId' : accountId,
+      'lockFields' : ['destCurrency', 'dest']
+    };
+
+    final response = await post(url,
+        headers: {
+          'Authorization': 'Bearer $secretKey',
+          'Content-Type': 'application/json',
+          'cache-control': 'no-cache'
+        },
+        body: json.encode(body)
+    );
+
+    if (response.statusCode == 200) {
+      final responseJSON = json.decode(response.body) as Map<String, dynamic>;
+      final urlFromResponse = responseJSON['url'] as String;
+      if (await canLaunch(urlFromResponse)) await launch(urlFromResponse);
+    }
+  }
 }