Ability to Join Classroom Added

.gitignore

@@ -44,3 +44,5 @@ app.*.map.json
 /android/app/google-services.json
 /android/app/profile
 /android/app/release
+ios/Runner/GoogleService-Info.plist
+ios/firebase_app_id_file.json

android/app/build.gradle

@@ -23,6 +23,7 @@ if (flutterVersionName == null) {
 
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
+apply plugin: 'com.google.gms.google-services'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
@@ -67,5 +68,6 @@ flutter {
 }
 
 dependencies {
+    implementation platform('com.google.firebase:firebase-bom:31.1.1')
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
 }

android/build.gradle

@@ -8,6 +8,7 @@ buildscript {
     dependencies {
         classpath 'com.android.tools.build:gradle:7.1.2'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+        classpath 'com.google.gms:google-services:4.3.13'
     }
 }
 

lib/app_navigation_controller.dart

@@ -1,5 +1,6 @@
 import 'package:classroom/blocs/classroom_bloc.dart';
 import 'package:classroom/blocs/navigation_bloc.dart';
+import 'package:classroom/blocs/user_bloc.dart';
 import 'package:floating_action_bubble/floating_action_bubble.dart';
 import 'package:flutter/material.dart';
 import 'package:font_awesome_flutter/font_awesome_flutter.dart';
@@ -37,6 +38,7 @@ class _AppNavigationControllerState extends State<AppNavigationController>
     Size size = MediaQuery.of(context).size;
     NavigationBloc nb = Provider.of<NavigationBloc>(context);
     ClassroomBloc cb = Provider.of<ClassroomBloc>(context);
+    UserBloc ub = Provider.of<UserBloc>(context);
 
     final bool showFab = MediaQuery.of(context).viewInsets.bottom == 0.0;
     return Scaffold(
@@ -73,8 +75,8 @@ class _AppNavigationControllerState extends State<AppNavigationController>
                     fontFamily: "PublicSans",
                     fontWeight: FontWeight.bold,
                   ),
-                  onPress: () async{
-                    await cb.joinClass(""); //TODO create dialog to fetch classroom ID
+                  onPress: () async {
+                    await cb.joinClass(context, "EnterClassroomID", ub.uid);
                     _animationController.reverse();
                   },
                 ),

lib/blocs/classroom_bloc.dart

@@ -1,12 +1,39 @@
 import 'package:classroom/configs/configs.dart';
+import 'package:classroom/utils/snackbar.dart';
 import 'package:cloud_firestore/cloud_firestore.dart';
 import 'package:flutter/material.dart';
 
 class ClassroomBloc extends ChangeNotifier {
   final FirebaseFirestore _firestore = FirebaseFirestore.instance;
 
-  Future joinClass(String classroomId) async {
+  bool _isLoading = false;
 
-    await _firestore.collection(Config.fscClassroom).doc(classroomId).update({});
+  bool get isLoading => _isLoading;
+
+  //Toggle loading status
+  void setLoading(bool value) {
+    _isLoading = value;
+    notifyListeners();
+  }
+
+  Future joinClass(
+      BuildContext context, String classroomId, String userId) async {
+    setLoading(true);
+    try {
+      // Add that student to class -
+      await _firestore.collection(Config.fscClassroom).doc(classroomId).update({
+        'students': FieldValue.arrayUnion([userId])
+      });
+
+      // Add that class to that user's joined classes
+      await _firestore.collection(Config.fscUser).doc(userId).update({
+        'joinedClasses': FieldValue.arrayUnion([classroomId])
+      });
+
+      setLoading(false);
+    } catch (e) {
+      setLoading(false);
+      showSnackBar(context, e.toString());
+    }
   }
 }