Adds token model.

lib/main.dart

@@ -2,18 +2,25 @@ import 'package:flutter/material.dart';
 import 'package:firebase_analytics/observer.dart';
 import 'package:firebase_analytics/firebase_analytics.dart';
 import 'package:firebase_auth/firebase_auth.dart';
+import 'package:in_app_purchase/in_app_purchase.dart';
 import 'services/services.dart';
 import 'screens/screens.dart';
 import 'package:provider/provider.dart';
 
-void main() => runApp(MyApp());
 
+void main() {
+  ///Include this in main() so purchases are enabled
+  InAppPurchaseConnection.enablePendingPurchases();
+
+  runApp(MyApp());
+}
 class MyApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MultiProvider(
       providers: [
         StreamProvider<Report>.value(value: Global.reportRef.documentStream),
+        StreamProvider<Token>.value(value: Global.tokenRef.documentStream),
         StreamProvider<FirebaseUser>.value(value: AuthService().user),
       ],
       child: MaterialApp(

lib/screens/purchase.dart

@@ -1,10 +1,14 @@
 import 'dart:async';
 import 'dart:io';
+import 'package:cloud_firestore/cloud_firestore.dart';
+import 'package:define9/services/globals.dart';
+import 'package:define9/services/models.dart';
 import 'package:flutter/material.dart';
 import 'package:in_app_purchase/in_app_purchase.dart';
+import 'package:provider/provider.dart';
 
 final String testID = 'gems_test';
-
+Token token;
 class MarketScreen extends StatefulWidget {
   createState() => MarketScreenState();
 }
@@ -79,9 +83,11 @@ class MarketScreenState extends State<MarketScreen> {
 
   /// Gets past purchases
   Future<void> _getPastPurchases() async {
-    QueryPurchaseDetailsResponse response =
-    await _iap.queryPastPurchases();
-
+    QueryPurchaseDetailsResponse response =  await _iap.queryPastPurchases();
+    if (response.error != null) {
+      print('Error querying past purchases: ${response.error.message}');
+      return;
+    }
     for (PurchaseDetails purchase in response.pastPurchases) {
       if (Platform.isIOS) {
         InAppPurchaseConnection.instance.completePurchase(purchase);
@@ -105,9 +111,24 @@ class MarketScreenState extends State<MarketScreen> {
     // TODO serverside verification & record consumable in the database
 
     if (purchase != null && purchase.status == PurchaseStatus.purchased) {
-      _credits = 10;
+      _updateUserTokenPurchase();
     }
   }
+  /// Database write to update token after purchase
+  Future<void> _updateUserTokenPurchase() {
+    return Global.tokenRef.upsert(
+      ({
+        'total': FieldValue.increment(9)
+      }),
+    );
+  }
+  Future<void> _updateUserTokenConsume() {
+    return Global.tokenRef.upsert(
+      ({
+        'total': FieldValue.increment(-1)
+      }),
+    );
+  }
   /// Purchase a product
   void _buyProduct(ProductDetails prod) {
     final PurchaseParam purchaseParam = PurchaseParam(productDetails: prod);
@@ -117,21 +138,18 @@ class MarketScreenState extends State<MarketScreen> {
   /// Spend credits and consume purchase when they run pit
   void _spendCredits(PurchaseDetails purchase) async {
 
-    /// Decrement credits
-    setState(() { _credits--; });
-
-    /// TODO update the state of the consumable to a backend database
+    _updateUserTokenConsume();
 
     // Mark consumed when credits run out
-    if (_credits == 0) {
+    if (token.total == 0) {
       var res = await _iap.consumePurchase(purchase);
       await _getPastPurchases();
     }
 
   }
   @override
   Widget build(BuildContext context) {
-
+    token = Provider.of<Token>(context);
     return Scaffold(
       appBar: AppBar(
         title: Text(_available ? 'Open for Business' : 'Not Available'),
@@ -146,7 +164,7 @@ class MarketScreenState extends State<MarketScreen> {
             // UI if already purchased
               if (_hasPurchased(prod.id) != null)
                 ...[
-                  Text('💎 $_credits', style: TextStyle(fontSize: 60)),
+                  Text('💎 $token.total', style: TextStyle(fontSize: 60)),
                   FlatButton(
                     child: Text('Consume'),
                     color: Colors.green,

lib/screens/quiz.dart

@@ -163,8 +163,24 @@ class CongratsPage extends StatelessWidget {
       }),
     );
   }
+  /// Database write to update token after purchase
+  Future<void> _updateUserTokenPurchase() {
+    return Global.tokenRef.upsert(
+      ({
+        'total': FieldValue.increment(9)
+      }),
+    );
+  }
+  Future<void> _updateUserTokenConsume() {
+    return Global.tokenRef.upsert(
+      ({
+        'total': FieldValue.increment(-1)
+      }),
+    );
+  }
 }
 
+
 class QuestionPage extends StatelessWidget {
   final Question question;
   QuestionPage({this.question});

lib/services/globals.dart

@@ -5,7 +5,7 @@ import 'package:firebase_analytics/firebase_analytics.dart';
 /// Static global state. Immutable services that do not care about build context. 
 class Global {
   // App Data
-  static final String title = 'Fireship';
+  static final String title = 'Define9';
 
   // Services
   static final FirebaseAnalytics analytics = FirebaseAnalytics();
@@ -15,11 +15,12 @@ class Global {
     Topic: (data) => Topic.fromMap(data),
     Quiz: (data) => Quiz.fromMap(data),
     Report: (data) => Report.fromMap(data),
+    Token: (data) => Token.fromMap(data),
   };
 
   // Firestore References for Writes
   static final Collection<Topic> topicsRef = Collection<Topic>(path: 'topics');
-  static final UserData<Report> reportRef = UserData<Report>(collection: 'reports'); 
+  static final UserData<Report> reportRef = UserData<Report>(collection: 'reports');
+  static final UserData<Token> tokenRef = UserData<Token>(collection: 'tokens');
 
-
 }

lib/services/models.dart

@@ -91,3 +91,18 @@ class Report {
 
 }
 
+class Token {
+  String uid;
+  int total;
+
+  Token({ this.uid, this.total });
+
+  factory Token.fromMap(Map data) {
+    if(data!=null)
+      return Token(
+        uid: data['uid'],
+        total: data['total'] ?? 0
+      );
+  }
+
+}

lib/shared/bottom_nav.dart

@@ -16,10 +16,10 @@ class AppBottomNav extends StatelessWidget {
             icon: Icon(FontAwesomeIcons.userCircle, size: 20),
             title: Text('Profile')),
         BottomNavigationBarItem(
-            icon: Icon(FontAwesomeIcons.bolt, size: 20),
+            icon: Icon(FontAwesomeIcons.book, size: 20),
             title: Text('Öyküleri Oku')),
         BottomNavigationBarItem(
-            icon: Icon(FontAwesomeIcons.bolt, size: 20),
+            icon: Icon(FontAwesomeIcons.coins, size: 20),
             title: Text('Jeton')),
       ].toList(),
       fixedColor: Colors.deepPurple[200],

pubspec.lock

@@ -129,14 +129,14 @@ packages:
       name: in_app_purchase
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.0+1"
+    version: "0.3.1+2"
   json_annotation:
     dependency: transitive
     description:
       name: json_annotation
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.4.0"
+    version: "3.0.1"
   matcher:
     dependency: transitive
     description:
@@ -269,5 +269,5 @@ packages:
     source: hosted
     version: "3.5.0"
 sdks:
-  dart: ">=2.4.0 <3.0.0"
+  dart: ">=2.6.0 <3.0.0"
   flutter: ">=1.12.13+hotfix.5 <2.0.0"

pubspec.yaml

@@ -36,7 +36,7 @@ dependencies:
   provider: 3.1.0
   font_awesome_flutter: 8.4.0
   webview_flutter: ^0.3.14+1
-  in_app_purchase: 0.2.0+1
+  in_app_purchase: 0.3.1+2
 dev_dependencies:
   flutter_test:
     sdk: flutter