feat: Added implementation to leave group as student

Author: MathisBurger

tasky/src/routes/group.rs

@@ -9,6 +9,7 @@ use crate::models::group_join_request::GroupJoinRequestRepository;
 use crate::response::group::{GroupResponse, GroupsResponse};
 use crate::response::shared::User;
 use crate::response::Enrich;
+use crate::security::StaticSecurity;
 use crate::security::{IsGranted, SecurityAction};
 use crate::AppState;
 use actix_web::delete;
@@ -280,3 +281,42 @@ pub async fn remove_user(
     GroupRepository::update_group(group, conn);
     Ok(HttpResponse::Ok().finish())
 }
+
+/// Endpoint to leave a specific group as student
+#[post("/groups/{id}/leave")]
+pub async fn leave_group(
+    data: web::Data<AppState>,
+    user: web::ReqData<UserData>,
+    path: web::Path<(i32,)>,
+) -> Result<HttpResponse, ApiError> {
+    let conn = &mut data.db.db.get().unwrap();
+    let path_data = path.into_inner();
+
+    let mut group = GroupRepository::get_by_id(path_data.0, conn).ok_or(ApiError::BadRequest {
+        message: "No access to group".to_string(),
+    })?;
+
+    if !group.is_granted(SecurityAction::Read, &user) {
+        return Err(ApiError::Forbidden {
+            message: "You are not allowed to leave this group".to_string(),
+        });
+    }
+
+    if !StaticSecurity::is_granted(crate::security::StaticSecurityAction::IsStudent, &user) {
+        return Err(ApiError::Forbidden {
+            message: "You are not a student and not able to leave this group".to_string(),
+        });
+    }
+
+    // TODO: When switching to more scalabe approach, consider adding membership verification here
+    // This is not nessesary for application security but would be a little extra
+
+    group.members = group
+        .members
+        .iter()
+        .filter(|m| m.is_some() && m.unwrap() != user.user_id)
+        .copied()
+        .collect();
+    GroupRepository::update_group(group, conn);
+    Ok(HttpResponse::Ok().finish())
+}

tasky/src/routes/mod.rs

@@ -24,6 +24,7 @@ pub fn init_services(cfg: &mut web::ServiceConfig) {
         .service(group::get_enlistable_users)
         .service(group::enlist_user)
         .service(group::remove_user)
+        .service(group::leave_group)
         .service(group_join_request::create_join_request)
         .service(group_join_request::get_join_requests)
         .service(group_join_request::approve_join_request)

web/app/groups/[groupId]/page.tsx

@@ -13,6 +13,7 @@ import UpdateGroupModal from "@/components/group/UpdateGroupModal";
 import useCurrentUser from "@/hooks/useCurrentUser";
 import {isGranted} from "@/service/auth";
 import {UserRoles} from "@/service/types/usernator";
+import LeaveGroupModal from "@/components/group/LeaveGroupModal";
 
 const GroupDetailsPage = ({ params }: { params: { groupId: string } }) => {
   const id = parseInt(`${params.groupId}`, 10);
@@ -21,6 +22,7 @@ const GroupDetailsPage = ({ params }: { params: { groupId: string } }) => {
   const [group, refetch] = useClientQuery<GroupType>(() => api.getGroup(id));
   const { addGroup } = useSpotlightStage2();
   const [updateModalOpen, setUpdateModalOpen] = useState<boolean>(false);
+  const [leaveModalOpen, setLeaveModalOpen] = useState<boolean>(false);
   const { t } = useTranslation("common");
 
   useEffect(() => {
@@ -48,6 +50,9 @@ const GroupDetailsPage = ({ params }: { params: { groupId: string } }) => {
         {(isGranted(user, [UserRoles.Admin]) || group?.tutor.id === user?.id) && (
           <Button onClick={() => setUpdateModalOpen(true)}>{t('common:titles.update-group')}</Button>
         )}
+        {isGranted(user, [UserRoles.Student]) && (
+            <Button color="red" onClick={() => setLeaveModalOpen(true)}>{t('group:actions.leave')}</Button>
+        )}
       </Group>
       {group === null ? (
         <CentralLoading />
@@ -61,6 +66,9 @@ const GroupDetailsPage = ({ params }: { params: { groupId: string } }) => {
               refetch={refetch}
           />
       )}
+      {leaveModalOpen && group && (
+          <LeaveGroupModal groupId={group.id} onClose={() => setLeaveModalOpen(false)} />
+      )}
     </Container>
   );
 };

web/components/group/LeaveGroupModal.tsx

@@ -0,0 +1,50 @@
+import {Button, Group, Modal, Text} from "@mantine/core";
+import {useTranslation} from "react-i18next";
+import useApiServiceClient from "@/hooks/useApiServiceClient";
+import {useRouter} from "next/navigation";
+import {showNotification} from "@mantine/notifications";
+
+
+interface LeaveGroupModalProps {
+    groupId: number;
+    onClose: () => void;
+}
+
+const LeaveGroupModal = ({groupId, onClose}: LeaveGroupModalProps) => {
+
+    const {t} = useTranslation(['group', 'common']);
+    const api = useApiServiceClient();
+    const router = useRouter();
+
+    const leave = async () => {
+        try {
+            await api.leaveGroup(groupId);
+            showNotification({
+                title: t('common:messages.success'),
+                message: t('group:messages.left-group')
+            });
+            router.push('/my-groups');
+        } catch (e: any) {
+            showNotification({
+                title: t('common:messages.error'),
+                message: e?.message ?? "",
+            })
+        }
+    }
+
+    return (
+        <Modal opened onClose={onClose} title={t('group:actions.leave')}>
+            <Text>
+                {t('group:text.leave-group')}
+            </Text>
+            <Group mt={10}>
+                <Button onClick={leave} color="red">{t("group:actions.leave")}</Button>
+                <Button onClick={onClose} color="gray">
+                    {t("common:actions.cancel")}
+                </Button>
+            </Group>
+        </Modal>
+    );
+}
+
+export default LeaveGroupModal;

web/public/locales/de/group.json

@@ -22,13 +22,18 @@
     "request-join": "Beitritt anfragen",
     "create-group": "Gruppe erstellen",
     "enlist-user": "Nutzer einschreiben",
-    "enlist": "Einschreiben"
+    "enlist": "Einschreiben",
+    "leave": "Verlassen"
   },
   "messages": {
     "join-request-created-title": "Beitrittsanfrage erstellt",
     "join-request-created-text": "Beitrittsanfrage für die Gruppe erstellt ",
     "unknown-user": "Unbekannter Nutzer",
     "enlisted-title": "Eingeschrieben",
-    "enlisted-text": "Du wurdest erfolgreich eingeschrieben "
+    "enlisted-text": "Du wurdest erfolgreich eingeschrieben ",
+    "left-group": "Gruppe erfolgreich verlassen"
+  },
+  "text": {
+    "leave-group": "Bist du sicher, dass du die Gruppe verlassen möchtest?"
   }
 }

web/public/locales/en/group.json

@@ -22,13 +22,18 @@
     "request-join": "Request Join",
     "create-group": "Create group",
     "enlist-user": "Enlist user",
-    "enlist": "Enlist"
+    "enlist": "Enlist",
+    "leave": "Leave"
   },
   "messages": {
     "join-request-created-title": "Join Request created",
     "join-request-created-text": "Created join request on group ",
     "unknown-user": "Unknown user",
     "enlisted-title": "Enlisted",
-    "enlisted-text": "You successfully enlisted into group "
+    "enlisted-text": "You successfully enlisted into group ",
+    "left-group": "Left group successfully"
+  },
+  "text": {
+    "leave-group": "Are you sure you want to leave the group?"
   }
 }

web/service/ApiService.ts

@@ -317,6 +317,10 @@ class ApiService {
     await this.post<any>("/usernator/switch_tutor", {});
   }
 
+  public async leaveGroup(groupId: number): Promise<void> {
+    await this.post<any>(`/tasky/groups/${groupId}/leave`, {});
+  }
+
   public async createOrUpdateCodeTests(
     groupId: number,
     assignmentId: number,