Continue refactoring homework dialog.

app/lib/blocs/homework/homework_dialog_bloc.dart

@@ -224,9 +224,8 @@ class HomeworkDialogBloc extends BlocBase with HomeworkValidators {
 
   Future<void> _loadInitialCloudFiles(
       String courseID, String homeworkID) async {
-    List<CloudFile> cloudFiles = await api.api.fileSharing.cloudFilesGateway
-        .filesStreamAttachment(courseID, homeworkID)
-        .first;
+    final cloudFiles =
+        await api.loadCloudFiles(courseId: courseID, homeworkId: homeworkID);
     _cloudFilesSubject.sink.add(cloudFiles);
     initialCloudFiles.addAll(cloudFiles);
   }
@@ -337,23 +336,30 @@ class UserInput {
 }
 
 class HomeworkDialogApi {
-  final SharezoneGateway api;
+  final SharezoneGateway _api;
+
+  HomeworkDialogApi(this._api);
 
-  HomeworkDialogApi(this.api);
+  Future<List<CloudFile>> loadCloudFiles(
+      {required String courseId, required String homeworkId}) {
+    return _api.fileSharing.cloudFilesGateway
+        .filesStreamAttachment(courseId, homeworkId)
+        .first;
+  }
 
   Future<HomeworkDto> create(UserInput userInput) async {
     final localFiles = userInput.localFiles;
     final course = userInput.course!;
-    final authorReference = api.references.users.doc(api.user.authUser!.uid);
-    final authorName = (await api.user.userStream.first)!.name;
-    final authorID = api.user.authUser!.uid;
-    final typeOfUser = (await api.user.userStream.first)!.typeOfUser;
+    final authorReference = _api.references.users.doc(_api.user.authUser!.uid);
+    final authorName = (await _api.user.userStream.first)!.name;
+    final authorID = _api.user.authUser!.uid;
+    final typeOfUser = (await _api.user.userStream.first)!.typeOfUser;
 
-    final attachments = await api.fileSharing.uploadAttachments(
+    final attachments = await _api.fileSharing.uploadAttachments(
         localFiles, userInput.course!.id, authorReference.id, authorName);
 
     final homework = HomeworkDto.create(
-            courseReference: api.references.getCourseReference(course.id),
+            courseReference: _api.references.getCourseReference(course.id),
             courseID: course.id)
         .copyWith(
       subject: course.subject,
@@ -379,11 +385,11 @@ class HomeworkDialogApi {
     );
 
     if (userInput.private!) {
-      await api.homework.addPrivateHomework(homework, false,
-          attachments: attachments, fileSharingGateway: api.fileSharing);
+      await _api.homework.addPrivateHomework(homework, false,
+          attachments: attachments, fileSharingGateway: _api.fileSharing);
     } else {
-      await api.homework.addHomeworkToCourse(homework,
-          attachments: attachments, fileSharingGateway: api.fileSharing);
+      await _api.homework.addHomeworkToCourse(homework,
+          attachments: attachments, fileSharingGateway: _api.fileSharing);
     }
 
     // If the homework will be added to the create, the wrong homework object will be return (the new forUsers map is missing)
@@ -393,17 +399,17 @@ class HomeworkDialogApi {
   Future<HomeworkDto> edit(HomeworkDto oldHomework, UserInput userInput,
       {List<CloudFile> removedCloudFiles = const []}) async {
     List<String> attachments = oldHomework.attachments.toList();
-    final editorName = (await api.user.userStream.first)!.name;
-    final editorID = api.user.authUser!.uid;
+    final editorName = (await _api.user.userStream.first)!.name;
+    final editorID = _api.user.authUser!.uid;
 
     for (int i = 0; i < removedCloudFiles.length; i++) {
       attachments.remove(removedCloudFiles[i].id);
-      api.fileSharing.removeReferenceData(removedCloudFiles[i].id!,
+      _api.fileSharing.removeReferenceData(removedCloudFiles[i].id!,
           ReferenceData(type: ReferenceType.blackboard, id: oldHomework.id));
     }
 
     final localFiles = userInput.localFiles;
-    final newAttachments = await api.fileSharing.uploadAttachments(
+    final newAttachments = await _api.fileSharing.uploadAttachments(
       localFiles,
       oldHomework.courseReference!.id,
       editorID,
@@ -423,11 +429,11 @@ class HomeworkDialogApi {
 
     final hasAttachments = attachments.isNotEmpty;
     if (hasAttachments) {
-      await api.homework.addPrivateHomework(homework, true,
-          attachments: newAttachments, fileSharingGateway: api.fileSharing);
+      await _api.homework.addPrivateHomework(homework, true,
+          attachments: newAttachments, fileSharingGateway: _api.fileSharing);
     } else {
-      api.homework.addPrivateHomework(homework, true,
-          attachments: newAttachments, fileSharingGateway: api.fileSharing);
+      _api.homework.addPrivateHomework(homework, true,
+          attachments: newAttachments, fileSharingGateway: _api.fileSharing);
     }
     return homework;
   }

app/lib/pages/homework/homework_dialog.dart

@@ -73,6 +73,19 @@ class _HomeworkDialogState extends State<HomeworkDialog> {
   }
 }
 
+class HwDialogKeys {
+  static const Key titleTextField = Key("title-field");
+  static const Key courseTile = Key("course-tile");
+  static const Key todoUntilTile = Key("todo-until-tile");
+  static const Key submissionTile = Key("submission-tile");
+  static const Key submissionTimeTile = Key("submission-time-tile");
+  static const Key descriptionField = Key("description-field");
+  static const Key addAttachmentTile = Key("add-attachment-tile");
+  static const Key notifyCourseMembersTile = Key("notify-course-members-tile");
+  static const Key isPrivateTile = Key("is-private-tile");
+  static const Key saveButton = Key("save-button");
+}
+
 class __HomeworkDialog extends StatefulWidget {
   const __HomeworkDialog({Key? key, this.homework, this.bloc})
       : super(key: key);
@@ -274,6 +287,7 @@ class _TodoUntilPicker extends StatelessWidget {
               color: snapshot.hasError ? Colors.red : null,
             ),
             child: DatePicker(
+              key: HwDialogKeys.todoUntilTile,
               padding: const EdgeInsets.all(12),
               selectedDate: snapshot.data,
               selectDate: bloc.changeTodoUntil,
@@ -326,6 +340,7 @@ class _AppBar extends StatelessWidget {
                     tooltip: "Schließen",
                   ),
                   _SaveButton(
+                    key: HwDialogKeys.saveButton,
                     oldHomework: oldHomework,
                     editMode: editMode,
                   ),
@@ -367,6 +382,7 @@ class _TitleField extends StatelessWidget {
             crossAxisAlignment: CrossAxisAlignment.start,
             children: <Widget>[
               PrefilledTextField(
+                key: HwDialogKeys.titleTextField,
                 prefilledText: prefilledTitle,
                 focusNode: focusNode,
                 cursorColor: Colors.white,
@@ -406,6 +422,7 @@ class _CourseTile extends StatelessWidget {
         top: false,
         bottom: false,
         child: CourseTile(
+          key: HwDialogKeys.courseTile,
           courseStream: bloc.courseSegment,
           onChanged: bloc.changeCourseSegment,
           editMode: editMode,
@@ -432,6 +449,7 @@ class _SendNotification extends StatelessWidget {
           builder: (context, snapshot) {
             final sendNotification = snapshot.data ?? false;
             return ListTileWithDescription(
+              key: HwDialogKeys.notifyCourseMembersTile,
               leading: const Icon(Icons.notifications_active),
               title: Text(
                   "Kursmitglieder ${editMode ? "über die Änderungen " : ""}benachrichtigen"),
@@ -472,6 +490,7 @@ class _DescriptionField extends StatelessWidget {
               ListTile(
                 leading: const Icon(Icons.subject),
                 title: PrefilledTextField(
+                  key: HwDialogKeys.descriptionField,
                   prefilledText: oldDescription,
                   maxLines: null,
                   scrollPadding: const EdgeInsets.all(16.0),
@@ -505,6 +524,7 @@ class _AttachFile extends StatelessWidget {
         top: false,
         bottom: false,
         child: AttachFile(
+          key: HwDialogKeys.addAttachmentTile,
           addLocalFileToBlocMethod: (localFile) => bloc.addLocalFile(localFile),
           removeLocalFileFromBlocMethod: (localFile) =>
               bloc.removeLocalFile(localFile),
@@ -552,6 +572,7 @@ class _SubmissionsSwitch extends StatelessWidget {
           final time = snapshot.data?.submissionTime;
 
           return _SubmissionsSwitchBase(
+            key: HwDialogKeys.submissionTile,
             isWidgetEnabled: isEnabled,
             submissionsEnabled: withSubmissions,
             onChanged: (newVal) => bloc.changeWithSubmissions(newVal),
@@ -597,6 +618,7 @@ class _SubmissionsSwitchBase extends StatelessWidget {
           duration: const Duration(milliseconds: 200),
           child: submissionsEnabled
               ? ListTile(
+                  key: HwDialogKeys.submissionTimeTile,
                   title: const Text("Abgabe-Uhrzeit"),
                   onTap: () async {
                     await hideKeyboardWithDelay(context: context);
@@ -642,6 +664,7 @@ class _PrivateHomeworkSwitch extends StatelessWidget {
           stream: bloc.private,
           builder: (context, snapshot) {
             return _PrivateHomeworkSwitchBase(
+              key: HwDialogKeys.isPrivateTile,
               isPrivate: snapshot.data ?? false,
               onChanged: editMode ? null : bloc.changePrivate,
             );
@@ -656,6 +679,7 @@ class _PrivateHomeworkSwitchBase extends StatelessWidget {
   const _PrivateHomeworkSwitchBase({
     required this.isPrivate,
     this.onChanged,
+    super.key,
   });
 
   final bool isPrivate;