constants.dart

lib/constants.dart

@@ -0,0 +1,11 @@
+class Constants {
+  Constants._();
+
+  /// Title of the app
+  static const String appTitle = "Cofounderella";
+
+  static const String dbCollectionUsers = 'Users';
+  static const String dbCollectionLanguages = 'languages';
+  static const String dbCollectionChatRooms = 'chat_rooms';
+  static const String dbCollectionMessages = 'messages';
+}

lib/main.dart

@@ -1,3 +1,4 @@
+import 'package:cofounderella/constants.dart';
 import 'package:cofounderella/services/auth/auth_gate.dart';
 import 'package:cofounderella/themes/theme_provider.dart';
 import 'package:flutter/material.dart';
@@ -28,7 +29,7 @@ class MyApp extends StatelessWidget {
   Widget build(BuildContext context) {
     return MaterialApp(
       debugShowCheckedModeBanner: false,
-      title: 'Cofounderella',
+      title: Constants.appTitle,
       theme: Provider.of<ThemeProvider>(context).themeData,
       home: const AuthGate(),
     );

lib/pages/user_data_page.dart

@@ -2,6 +2,7 @@ import 'dart:convert';
 import 'package:cloud_firestore/cloud_firestore.dart';
 import 'package:cofounderella/components/my_button.dart';
 import 'package:cofounderella/components/my_textfield.dart';
+import 'package:cofounderella/constants.dart';
 import 'package:cofounderella/models/language.dart';
 import 'package:cofounderella/models/language_setting.dart';
 import 'package:flutter/material.dart';
@@ -41,9 +42,9 @@ class _UserDataPageState extends State<UserDataPage> {
 
     // Get reference to the Firebase collection
     CollectionReference languagesRef = _firestore
-        .collection('Users')
+        .collection(Constants.dbCollectionUsers)
         .doc(currentUserID)
-        .collection('languages');
+        .collection(Constants.dbCollectionLanguages);
 
     // Loop through each Language object and save it to the collection
     for (int i = 0; i < _selectedLanguages.length; i++) {

lib/services/auth/auth_service.dart

@@ -1,4 +1,5 @@
 import 'package:cloud_firestore/cloud_firestore.dart';
+import 'package:cofounderella/constants.dart';
 import 'package:firebase_auth/firebase_auth.dart';
 
 class AuthService {
@@ -36,7 +37,10 @@ class AuthService {
       );
 
       // save user info in a document
-      _firestore.collection("Users").doc(userCredential.user!.uid).set(
+      _firestore
+          .collection(Constants.dbCollectionUsers)
+          .doc(userCredential.user!.uid)
+          .set(
         {
           'uid': userCredential.user!.uid,
           'email': email,
@@ -53,6 +57,4 @@ class AuthService {
   Future<void> signOut() async {
     return await _auth.signOut();
   }
-
-// errors
 }

lib/services/chat/chat_service.dart

@@ -1,4 +1,5 @@
 import 'package:cloud_firestore/cloud_firestore.dart';
+import 'package:cofounderella/constants.dart';
 import 'package:cofounderella/models/message.dart';
 import 'package:firebase_auth/firebase_auth.dart';
 
@@ -9,7 +10,10 @@ class ChatService {
 
   // get user stream
   Stream<List<Map<String, dynamic>>> getUsersStream() {
-    return _firestore.collection("Users").snapshots().map((snapshot) {
+    return _firestore
+        .collection(Constants.dbCollectionUsers)
+        .snapshots()
+        .map((snapshot) {
       return snapshot.docs.map((doc) {
         // iterate each user
         final user = doc.data();
@@ -43,9 +47,9 @@ class ChatService {
 
     // add new message to database
     await _firestore
-        .collection("chat_rooms")
+        .collection(Constants.dbCollectionChatRooms)
         .doc(chatRoomID)
-        .collection("messages")
+        .collection(Constants.dbCollectionMessages)
         .add(newMessage.toMap());
   }
 
@@ -58,9 +62,9 @@ class ChatService {
     String chatRoomID = ids.join('_');
 
     return _firestore
-        .collection("chat_rooms")
+        .collection(Constants.dbCollectionChatRooms)
         .doc(chatRoomID)
-        .collection("messages")
+        .collection(Constants.dbCollectionMessages)
         .orderBy("timestamp", descending: false)
         .snapshots();
   }