CAKE-360 | added shouldShowYatPopup parameter to settings_store.dart and applied this parameter to dashboard_view_model.dart and dashboard_page.dart; added scrollbar to choose_yat_address_alert.dart; changed yat logo; fixed fetchYatAddress() method in the yat_store.dart; created class YatLink

lib/store/settings_store.dart

@@ -38,6 +38,7 @@ abstract class SettingsStoreBase with Store {
       @required Map<WalletType, Node> nodes,
       @required TransactionPriority initialBitcoinTransactionPriority,
       @required TransactionPriority initialMoneroTransactionPriority,
+      @required this.shouldShowYatPopup,
       @required this.isBitcoinBuyEnabled,
       this.actionlistDisplayMode}) {
     fiatCurrency = initialFiatCurrency;
@@ -59,6 +60,11 @@ abstract class SettingsStoreBase with Store {
         (FiatCurrency fiatCurrency) => sharedPreferences.setString(
             PreferencesKey.currentFiatCurrencyKey, fiatCurrency.serialize()));
 
+    reaction(
+        (_) => shouldShowYatPopup,
+        (bool shouldShowYatPopup) => sharedPreferences
+             .setBool(PreferencesKey.shouldShowYatPopup, shouldShowYatPopup));
+
     priority.observe((change) {
       final key = change.key == WalletType.monero
           ? PreferencesKey.moneroTransactionPriority
@@ -110,6 +116,9 @@ abstract class SettingsStoreBase with Store {
   @observable
   FiatCurrency fiatCurrency;
 
+  @observable
+  bool shouldShowYatPopup;
+
   @observable
   ObservableList<ActionListDisplayMode> actionlistDisplayMode;
 
@@ -217,6 +226,8 @@ abstract class SettingsStoreBase with Store {
     final bitcoinElectrumServer = nodeSource.get(bitcoinElectrumServerId);
     final litecoinElectrumServer = nodeSource.get(litecoinElectrumServerId);
     final packageInfo = await PackageInfo.fromPlatform();
+    final shouldShowYatPopup =
+        sharedPreferences.getBool(PreferencesKey.shouldShowYatPopup) ?? true;
 
     return SettingsStore(
         sharedPreferences: sharedPreferences,
@@ -236,7 +247,8 @@ abstract class SettingsStoreBase with Store {
         initialPinLength: pinLength,
         initialLanguageCode: savedLanguageCode,
         initialMoneroTransactionPriority: moneroTransactionPriority,
-        initialBitcoinTransactionPriority: bitcoinTransactionPriority);
+        initialBitcoinTransactionPriority: bitcoinTransactionPriority,
+        shouldShowYatPopup: shouldShowYatPopup);
   }
 
   Future<void> reload(
@@ -270,6 +282,7 @@ abstract class SettingsStoreBase with Store {
     pinCodeLength = settings.pinCodeLength;
     languageCode = settings.languageCode;
     appVersion = settings.appVersion;
+    shouldShowYatPopup = settings.shouldShowYatPopup;
   }
 
   Future<void> _saveCurrentNode(Node node, WalletType walletType) async {

lib/store/yat/yat_store.dart

@@ -15,18 +15,24 @@ import 'package:http/http.dart';
 
 part 'yat_store.g.dart';
 
-const baseDevUrl = 'https://yat.fyi';
-const baseReleaseUrl = 'https://y.at';
-const signInSuffix = '/partner/CW/link-email';
-const createSuffix = '/create';
-const queryParameter = '?addresses=';
-const requestDevUrl = 'https://a.yat.fyi/emoji_id/';
-const requestReleaseUrl = 'https://a.y.at/emoji_id/';
-const isYatDevMode = true;
+class YatLink {
+  static const baseDevUrl = 'https://yat.fyi';
+  static const baseReleaseUrl = 'https://y.at';
+  static const signInSuffix = '/partner/CW/link-email';
+  static const createSuffix = '/create';
+  static const queryParameter = '?addresses=';
+  static const requestDevUrl = 'https://a.yat.fyi/emoji_id/';
+  static const requestReleaseUrl = 'https://a.y.at/emoji_id/';
+  static const isDevMode = true;
+  static const tags = <String, List<String>>{"XMR" : ['0x1001', '0x1002'],
+    "BTC" : ['0x1003'], "LTC" : ['0x3fff']};
+}
 
 Future<List<String>> fetchYatAddress(String emojiId, String ticker) async {
-  final requestURL = isYatDevMode ? requestDevUrl : requestReleaseUrl;
-  final url = requestURL + emojiId + '/' + ticker.toUpperCase();
+  final requestURL = YatLink.isDevMode
+      ? YatLink.requestDevUrl
+      : YatLink.requestReleaseUrl;
+  final url = requestURL + emojiId;
   final response = await get(url);
 
   if (response.statusCode != 200) {
@@ -41,11 +47,18 @@ Future<List<String>> fetchYatAddress(String emojiId, String ticker) async {
   }
 
   final List<String> addresses = [];
+  final currency = ticker.toUpperCase();
 
   for (var elem in result) {
-    final yatAddress = elem['data'] as String;
-    if (yatAddress?.isNotEmpty ?? false) {
-      addresses.add(yatAddress);
+    final tag = elem['tag'] as String;
+    if (tag?.isEmpty ?? true) {
+      continue;
+    }
+    if (YatLink.tags[currency]?.contains(tag) ?? false) {
+      final yatAddress = elem['data'] as String;
+      if (yatAddress?.isNotEmpty ?? false) {
+        addresses.add(yatAddress);
+      }
     }
   }
 
@@ -123,8 +136,8 @@ abstract class YatStoreBase with Store {
             }
 
             parameters += subaddress.address.startsWith('4')
-                ? '0x1001%3D'
-                : '0x1002%3D';
+                ? YatLink.tags["XMR"].first + '%3D'
+                : YatLink.tags["XMR"].last + '%3D';
 
             parameters += subaddress.address;
           });
@@ -141,7 +154,7 @@ abstract class YatStoreBase with Store {
             isFirstAddress = !isFirstAddress;
           }
 
-          parameters += '0x1003%3D' + record.address;
+          parameters += YatLink.tags["BTC"].first + '%3D' + record.address;
         });
         break;
       case WalletType.litecoin:
@@ -155,7 +168,7 @@ abstract class YatStoreBase with Store {
             isFirstAddress = !isFirstAddress;
           }
 
-          parameters += '0x3fff%3D' + record.address;
+          parameters += YatLink.tags["LTC"].first + '%3D' + record.address;
         });
         break;
       default: