Move firebase_helper.dart to cloud_firestore_helper (#1236)

This PR moves the `firebase_helper.dart` to its own
`cloud_firestore_helper` package. The `cloud_firestore_helper` doesn't
have a dependency on `cloud_firestore`. This is required to use the
Sharezone Plus widgets on our website without the Firebase dependencies.

app/lib/blackboard/blackboard_item.dart

@@ -7,7 +7,7 @@
 // SPDX-License-Identifier: EUPL-1.2
 
 import 'package:cloud_firestore/cloud_firestore.dart';
-import 'package:sharezone_common/firebase_helper.dart';
+import 'package:cloud_firestore_helper/cloud_firestore_helper.dart';
 
 class BlackboardItem {
   final String id;

app/lib/changelog/change_database_model.dart

@@ -8,7 +8,7 @@
 
 import 'package:cloud_firestore/cloud_firestore.dart';
 import 'package:sharezone/changelog/change.dart';
-import 'package:sharezone_common/firebase_helper.dart';
+import 'package:cloud_firestore_helper/cloud_firestore_helper.dart';
 
 class ChangeDatabaseModel {
   final String id;

app/lib/comments/comment_data_models.dart

@@ -8,7 +8,7 @@
 
 import 'package:cloud_firestore/cloud_firestore.dart';
 import 'package:sharezone/comments/comment.dart';
-import 'package:sharezone_common/firebase_helper.dart';
+import 'package:cloud_firestore_helper/cloud_firestore_helper.dart';
 
 class CommentDataModel {
   final String? id;

app/lib/groups/group_join/models/group_join_result.dart

@@ -9,7 +9,7 @@
 import 'package:group_domain_models/group_domain_models.dart';
 import 'package:sharezone/groups/group_join/models/group_info_with_selection_state.dart';
 import 'package:sharezone/groups/group_join/models/group_join_exception.dart';
-import 'package:sharezone_common/firebase_helper.dart';
+import 'package:cloud_firestore_helper/cloud_firestore_helper.dart';
 
 abstract class GroupJoinResult {}
 

app/pubspec.yaml

@@ -52,6 +52,8 @@ dependencies:
   characters: ^1.0.0
   clock: ^1.1.1
   cloud_firestore: ^4.8.5
+  cloud_firestore_helper:
+    path: ../lib/cloud_firestore_helper
   cloud_functions: ^4.4.0
   collection: ^1.17.2
   common_domain_models:

lib/authentification/authentification_qrcode/lib/src/models/qr_sign_in_document.dart

@@ -7,7 +7,7 @@
 // SPDX-License-Identifier: EUPL-1.2
 
 import 'package:authentification_qrcode/authentification_qrcode.dart';
-import 'package:sharezone_common/firebase_helper.dart';
+import 'package:cloud_firestore_helper/cloud_firestore_helper.dart';
 
 class QrSignInDocument {
   final String? qrId;
@@ -31,7 +31,7 @@ class QrSignInDocument {
       encryptedCustomToken: data['encryptedCustomToken'],
       encryptedKey: data['encryptedKey'],
       iv: data['iv'],
-      created: dateTimeFromTimestamp(data['created']),
+      created: dateTimeFromTimestampOrNull(data['created']),
     );
   }
 

lib/authentification/authentification_qrcode/pubspec.yaml

@@ -25,8 +25,8 @@ dependencies:
     path: ../../bloc_base
   crash_analytics:
     path: ../../crash_analytics
-  sharezone_common:
-    path: ../../sharezone_common
+  cloud_firestore_helper:
+    path: ../../cloud_firestore_helper
   platform_check:
     path: ../../platform_check
   util:

lib/cloud_firestore_helper/.gitignore

@@ -0,0 +1,75 @@
+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.packages
+.pub-cache/
+.pub/
+build/
+
+# Android related
+**/android/**/gradle-wrapper.jar
+**/android/.gradle
+**/android/captures/
+**/android/gradlew
+**/android/gradlew.bat
+**/android/local.properties
+**/android/**/GeneratedPluginRegistrant.java
+
+# iOS/XCode related
+**/ios/**/*.mode1v3
+**/ios/**/*.mode2v3
+**/ios/**/*.moved-aside
+**/ios/**/*.pbxuser
+**/ios/**/*.perspectivev3
+**/ios/**/*sync/
+**/ios/**/.sconsign.dblite
+**/ios/**/.tags*
+**/ios/**/.vagrant/
+**/ios/**/DerivedData/
+**/ios/**/Icon?
+**/ios/**/Pods/
+**/ios/**/.symlinks/
+**/ios/**/profile
+**/ios/**/xcuserdata
+**/ios/.generated/
+**/ios/Flutter/App.framework
+**/ios/Flutter/Flutter.framework
+**/ios/Flutter/Flutter.podspec
+**/ios/Flutter/Generated.xcconfig
+**/ios/Flutter/app.flx
+**/ios/Flutter/app.zip
+**/ios/Flutter/flutter_assets/
+**/ios/Flutter/flutter_export_environment.sh
+**/ios/ServiceDefinitions.json
+**/ios/Runner/GeneratedPluginRegistrant.*
+
+# Exceptions to above rules.
+!**/ios/**/default.mode1v3
+!**/ios/**/default.mode2v3
+!**/ios/**/default.pbxuser
+!**/ios/**/default.perspectivev3
+!/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages

lib/cloud_firestore_helper/analysis_options.yaml

@@ -0,0 +1,9 @@
+# Copyright (c) 2023 Sharezone UG (haftungsbeschränkt)
+# Licensed under the EUPL-1.2-or-later.
+#
+# You may obtain a copy of the Licence at:
+# https://joinup.ec.europa.eu/software/page/eupl
+#
+# SPDX-License-Identifier: EUPL-1.2
+
+include: package:sharezone_lints/analysis_options.yaml

lib/cloud_firestore_helper/example/analysis_options.yaml

@@ -0,0 +1,9 @@
+# Copyright (c) 2023 Sharezone UG (haftungsbeschränkt)
+# Licensed under the EUPL-1.2-or-later.
+#
+# You may obtain a copy of the Licence at:
+# https://joinup.ec.europa.eu/software/page/eupl
+#
+# SPDX-License-Identifier: EUPL-1.2
+
+include: package:sharezone_lints/analysis_options.yaml