Show message when trying to leave as last moderator

Signed-off-by: Joas Schilling <coding@schilljs.com>

src/components/LeftSidebar/ConversationsList/Conversation.vue

@@ -217,7 +217,11 @@ export default {
 				// If successful, deletes the conversation from the store
 				this.$store.dispatch('deleteConversation', this.item)
 			} catch (error) {
-				console.debug(`error while removing yourself from conversation ${error}`)
+				if (error.response.status === 400) {
+					OCP.Toast.error(t('spreed', 'You need to promote a new moderator before you can leave the conversation.'))
+				} else {
+					console.debug(`error while removing yourself from conversation ${error}`)
+				}
 			}
 		},
 		async toggleFavoriteConversation() {

src/services/participantsService.js

@@ -72,12 +72,8 @@ const addParticipant = async function(token, newParticipant, source) {
  * @param {string} token The conversation token;
  */
 const removeCurrentUserFromConversation = async function(token) {
-	try {
+	const response = await axios.delete(generateOcsUrl('apps/spreed/api/v1', 2) + `room/${token}/participants/self`)
-		const response = await axios.delete(generateOcsUrl('apps/spreed/api/v1', 2) + `room/${token}/participants/self`)
+	return response
-		return response
-	} catch (error) {
-		console.debug(error)
-	}
 }
 
 const removeUserFromConversation = async function(token, userId) {