Prevent the duplication of group

l10n/en.js

@@ -19,6 +19,8 @@ OC.L10N.register(
 		'return to home': 'return to home',
 		'Email': 'Emails',
 		'Groups': 'Groups',
+		'Duplication of groups': 'Duplication of groups',
+		'The group already exists.': 'The group already exists.',
 		'Make administrator': 'Assign as Workspace manager',
 		'Error to rename space': 'Error to rename space',
 		'The space name already exist. We cannot rename with this name.': 'The space name already exist. We cannot rename with this name.',

l10n/fr.js

@@ -11,6 +11,8 @@ OC.L10N.register(
 		'Space name': 'Nom de l\'espace de travail',
 		'Caution, users highlighted in red are not yet member of this workspace. They will be automaticaly added.': "Attention, les utilisateurs surlignés en rouge ne sont pas encore membres de l'espace. Ils seront ajoutés automatiquement à ce dernier.",
 		'Create group': 'Créer un groupe',
+		'Duplication of groups': 'Duplication des groupes',
+		'The group already exists.': 'Le groupe existe déjà.',
 		'Delete space': "Supprimer l'espace de travail",
 		'Delete user': "Retirer de l'espace de travail",
 		'Email': 'Email',

l10n/fr.json

@@ -8,6 +8,8 @@
 	"Caution, users highlighted in red are not yet member of this workspace. They will be automaticaly added.": "Attention, les utilisateurs surlignés en rouge ne sont pas encore membres de l'espace. Ils seront ajoutés automatiquement à ce dernier",
 	"Create group": "Créer un groupe",
 	"Delete space" : "Supprimer l'espace de travail",
+	"Duplication of groups": "Duplication des groupes",
+	"The group already exists.": "Le groupe existe déjà.",
 	"Delete user" : "Supprimer de l'espace de travail",
 	"Group name": "Nom du groupe",
 	"Space name": "Nom de l'espace de travail",

src/SpaceDetails.vue

@@ -166,7 +166,7 @@ export default {
 			}
 
 			// Creates group
-			this.$store.dispatch('createGroup', { name: this.$route.params.space, gid })
+			this.$store.dispatch('createGroup', { name: this.$route.params.space, gid, vueInstance: this })
 		},
 		onSpaceRename(e) {
 			// Hides ActionInput

src/store/actions.js

@@ -25,6 +25,7 @@ import { addGroupToGroupfolder } from '../services/groupfoldersService.js'
 import { ESPACE_MANAGERS_PREFIX, ESPACE_USERS_PREFIX, ESPACE_GID_PREFIX } from '../constants.js'
 import { generateUrl } from '@nextcloud/router'
 import axios from '@nextcloud/axios'
+import NotificationError from '../services/Notifications/NotificationError.js'
 import router from '../router.js'
 
 export default {
@@ -79,12 +80,22 @@ export default {
 			})
 		})
 	},
-	// Creates a group and navigates to its details page
-	createGroup(context, { name, gid }) {
+	  // Creates a group and navigates to its details page
+	  createGroup(context, { name, gid, vueInstance = undefined }) {
 		// Groups must be postfixed with the ID of the space they belong
 		const space = context.state.spaces[name]
 		gid = gid + '-' + space.id
 
+		const groups = Object.keys(space.groups)
+		if (groups.includes(gid)) {
+			const duplicateError = new NotificationError(vueInstance)
+			duplicateError.push({
+				title: t('workspace', 'Duplication of groups'),
+				text: t('workspace', 'The group already exists.'),
+			})
+			return
+		}
+
 		// Creates group in frontend
 		context.commit('addGroupToSpace', { name, gid })