Migrate group_domain_models package null safety

app/lib/calendrical_events/models/calendrical_event.dart

@@ -51,7 +51,7 @@ class CalendricalEvent {
       startTime: Time.parse(data['startTime'] as String),
       endTime: Time.parse(data['endTime'] as String),
       title: data['title'] as String,
-      groupType: groupTypeFromString(data['groupType'] as String),
+      groupType: GroupType.values.byName(data['groupType'] as String),
       eventType: getEventTypeFromString(data['eventType'] as String),
       detail: data['detail'] as String,
       place: data['place'] as String,
@@ -63,7 +63,7 @@ class CalendricalEvent {
   Map<String, dynamic> toJson() {
     return {
       'groupID': groupID,
-      'groupType': groupTypeToString(groupType),
+      'groupType': groupType?.name,
       'eventType': getEventTypeToString(eventType),
       'authorID': authorID,
       'date': date.toDateString,

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

@@ -30,7 +30,7 @@ class GroupInfoWithSelectionState {
   factory GroupInfoWithSelectionState.fromData(Map<String, dynamic> data) {
     return GroupInfoWithSelectionState(
       id: data['id'] as String,
-      groupType: groupTypeFromString(data['groupType'] as String),
+      groupType: GroupType.values.byName(data['groupType'] as String),
       name: data['name'] as String,
       abbreviation: data['abbreviation'] as String,
       design: Design.fromData(data['design']),

app/lib/timetable/src/models/lesson.dart

@@ -44,7 +44,7 @@ class Lesson {
     return Lesson(
       lessonID: id,
       groupID: data['groupID'] as String,
-      groupType: groupTypeFromString(data['groupType'] as String),
+      groupType: GroupType.values.byName(data['groupType'] as String),
       startDate: Date.parseOrNull(data['startDate'] as String),
       endDate: Date.parseOrNull(data['endDate'] as String),
       startTime: Time.parse(data['startTime'] as String),
@@ -60,7 +60,7 @@ class Lesson {
   Map<String, dynamic> toJson() {
     return {
       'groupID': groupID,
-      'groupType': groupTypeToString(groupType),
+      'groupType': groupType?.name,
       'startDate': startDate?.toDateString,
       'endDate': endDate?.toDateString,
       'startTime': startTime?.time,

app/lib/util/api/connections_gateway.dart

@@ -109,9 +109,9 @@ class ConnectionsGateway implements MyConnectionsAccesor {
     }, SetOptions(merge: true));
   }
 
-  /// Warum wird nicht einfach [groupTypeToString(type)] verwendet? Für
+  /// Warum wird nicht einfach [type.name] verwendet? Für
   /// [addConnectionCreate] ist es notwenig, dass der Wert für z.B. Kurse
-  /// "Courses" ist. Mit [groupTypeToString(type)] ist der Wert jedoch
+  /// "Courses" ist. Mit [type.name] ist der Wert jedoch
   /// "courses", wodurch der Client diesen Kurs ignoriert (es entsteht dieser
   /// Bug: https://gitlab.com/codingbrain/sharezone/sharezone-app/-/issues/984)
   String _getCamelCaseGroupType(GroupType groupType) {
@@ -167,7 +167,7 @@ class ConnectionsGateway implements MyConnectionsAccesor {
   }) async {
     return references.functions.joinWithGroupId(
       id: id,
-      type: groupTypeToString(type),
+      type: type.name,
       uId: memberID,
     );
   }
@@ -176,7 +176,7 @@ class ConnectionsGateway implements MyConnectionsAccesor {
       {@required String id, @required GroupType type}) {
     return references.functions.leave(
       id: id,
-      type: groupTypeToString(type),
+      type: type.name,
       memberID: memberID,
     );
   }
@@ -187,7 +187,7 @@ class ConnectionsGateway implements MyConnectionsAccesor {
       SchoolClassDeleteType schoolClassDeleteType}) {
     return references.functions.groupDelete(
       groupID: id,
-      type: groupTypeToString(type),
+      type: type.name,
       schoolClassDeleteType: schoolClassTypeToString(schoolClassDeleteType),
     );
   }

app/lib/util/api/course_gateway.dart

@@ -105,7 +105,7 @@ class CourseGateway {
       String courseID, String kickedMemberID) async {
     return references.functions.leave(
       id: courseID,
-      type: groupTypeToString(GroupType.course),
+      type: GroupType.course.name,
       memberID: kickedMemberID,
     );
   }
@@ -114,7 +114,7 @@ class CourseGateway {
     return references.functions.groupEdit(
       id: course.id,
       data: course.toEditJson(),
-      type: groupTypeToString(GroupType.course),
+      type: GroupType.course.name,
     );
   }
 
@@ -132,21 +132,21 @@ class CourseGateway {
     return references.functions.groupEditSettings(
       id: courseID,
       settings: courseSettings.toJson(),
-      type: groupTypeToString(GroupType.course),
+      type: GroupType.course.name,
     );
   }
 
   Future<AppFunctionsResult<bool>> generateNewMeetingID(String courseID) async {
     return references.functions.generateNewMeetingID(
       id: courseID,
-      type: groupTypeToString(GroupType.course),
+      type: GroupType.course.name,
     );
   }
 
   Future<AppFunctionsResult<bool>> deleteCourse(String courseID) async {
     return references.functions.groupDelete(
       groupID: courseID,
-      type: groupTypeToString(GroupType.course),
+      type: GroupType.course.name,
     );
   }
 
@@ -194,8 +194,8 @@ class CourseGateway {
       @required MemberRole newRole}) {
     return references.functions.memberUpdateRole(
       id: courseID,
-      type: groupTypeToString(GroupType.course),
-      role: memberRoleEnumToString(newRole),
+      type: GroupType.course.name,
+      role: newRole.name,
       memberID: newMemberID,
     );
   }

app/lib/util/api/school_class_gateway.dart

@@ -54,8 +54,8 @@ class SchoolClassGateway {
     return references.functions.memberUpdateRole(
       id: schoolClassID,
       memberID: memberID,
-      role: memberRoleEnumToString(newRole),
-      type: groupTypeToString(GroupType.schoolclass),
+      role: newRole.name,
+      type: GroupType.schoolclass.name,
     );
   }
 
@@ -65,14 +65,14 @@ class SchoolClassGateway {
       memberID: memberID,
       id: schoolClass.id,
       data: schoolClass.toCreateJson(),
-      type: groupTypeToString(GroupType.schoolclass),
+      type: GroupType.schoolclass.name,
     );
   }
 
   Future<AppFunctionsResult<bool>> generateNewMeetingID(String schoolClassID) {
     return references.functions.generateNewMeetingID(
       id: schoolClassID,
-      type: groupTypeToString(GroupType.schoolclass),
+      type: GroupType.schoolclass.name,
     );
   }
 
@@ -85,15 +85,15 @@ class SchoolClassGateway {
       data: courseData.copyWith(
           id: courseID,
           referenceSchoolClassIDs: [schoolClassID]).toCreateJson(memberID),
-      type: groupTypeToString(GroupType.course),
+      type: GroupType.course.name,
     );
   }
 
   Future<AppFunctionsResult<bool>> editSchoolClass(SchoolClass schoolClass) {
     return references.functions.groupEdit(
       id: schoolClass.id,
       data: schoolClass.toJson(),
-      type: groupTypeToString(GroupType.schoolclass),
+      type: GroupType.schoolclass.name,
     );
   }
 
@@ -118,15 +118,15 @@ class SchoolClassGateway {
     return references.functions.groupEditSettings(
       id: schoolClassID,
       settings: schoolClassSettings.toJson(),
-      type: groupTypeToString(GroupType.schoolclass),
+      type: GroupType.schoolclass.name,
     );
   }
 
   Future<AppFunctionsResult<bool>> kickMember(
       String schoolClassID, String kickedMemberID) async {
     return references.functions.leave(
       id: schoolClassID,
-      type: groupTypeToString(GroupType.schoolclass),
+      type: GroupType.schoolclass.name,
       memberID: kickedMemberID,
     );
   }

lib/group_domain_models/lib/src/accessors/group_member_accessor.dart

@@ -7,7 +7,6 @@
 // SPDX-License-Identifier: EUPL-1.2
 
 import 'package:common_domain_models/common_domain_models.dart';
-import 'package:flutter/foundation.dart';
 import 'package:group_domain_models/group_domain_models.dart';
 import 'package:sharezone_common/api_errors.dart';
 
@@ -19,8 +18,8 @@ class GroupMemberAccessor {
   final SchoolClassMemberAccessor schoolClassMemberAccessor;
 
   const GroupMemberAccessor({
-    @required this.courseMemberAccessor,
-    @required this.schoolClassMemberAccessor,
+    required this.courseMemberAccessor,
+    required this.schoolClassMemberAccessor,
   });
 
   Stream<List<MemberData>> streamAllMembers(GroupKey groupKey) {

lib/group_domain_models/lib/src/models/connections_data.dart

@@ -6,24 +6,27 @@
 //
 // SPDX-License-Identifier: EUPL-1.2
 
-import 'package:flutter/foundation.dart';
 import 'package:group_domain_models/group_domain_models.dart';
 import 'package:sharezone_common/helper_functions.dart';
 import 'package:sharezone_common/references.dart';
 
 class ConnectionsData {
-  final Map<String, SchoolClass> schoolClass;
-  final Map<String, Course> courses;
+  final Map<String, SchoolClass>? schoolClass;
+  final Map<String?, Course> courses;
 
-  const ConnectionsData._({@required this.schoolClass, @required this.courses});
+  const ConnectionsData._({
+    required this.schoolClass,
+    required this.courses,
+  });
 
-  factory ConnectionsData.fromData({@required Map<String, dynamic> data}) {
+  static ConnectionsData? fromData({required Map<String, dynamic>? data}) {
     if (data == null) {
       return const ConnectionsData._(
         schoolClass: null,
         courses: {},
       );
     }
+
     Map<String, SchoolClass> schoolClasses = decodeMap(
         data[CollectionNames.schoolClasses],
         (key, data) => SchoolClass.fromData(data, id: key));
@@ -35,7 +38,7 @@ class ConnectionsData {
   }
 
   ConnectionsData copyWithJoinedCourses(List<Course> joinedCourses) {
-    Map<String, Course> courseMap = Map.of(courses);
+    Map<String?, Course> courseMap = Map.of(courses);
     for (Course course in joinedCourses) {
       if (!courseMap.containsKey(course.id)) {
         courseMap[course.id] = course;
@@ -46,24 +49,4 @@ class ConnectionsData {
       courses: courseMap,
     );
   }
-
-  GroupInfo getGroupInfo(GroupKey groupKey) {
-    if (groupKey.groupType == GroupType.course) {
-      return courses[groupKey.id].toGroupInfo();
-    } else if (groupKey.groupType == GroupType.schoolclass) {
-      return schoolClass[groupKey.id].toGroupInfo();
-    }
-    return null;
-  }
-
-  List<GroupInfo> getGroups() {
-    final courseList =
-        courses.values.map((courseInfo) => courseInfo.toGroupInfo());
-    final schoolClassList =
-        schoolClass.values.map((schoolClass) => schoolClass.toGroupInfo());
-    final list = <GroupInfo>[];
-    list.addAll(courseList);
-    list.addAll(schoolClassList);
-    return list;
-  }
 }