Update membership reason handling, including leave reason displaying

Incorporates ideas from https://github.com/matrix-org/matrix-react-sdk/pull/6198

src/TextForEvent.ts

@@ -31,8 +31,8 @@ function textForMemberEvent(ev): () => string | null {
     const targetName = ev.target ? ev.target.name : ev.getStateKey();
     const prevContent = ev.getPrevContent();
     const content = ev.getContent();
+    const reason = content.reason;
 
-    const getReason = () => content.reason ? (_t('Reason') + ': ' + content.reason) : '';
     switch (content.membership) {
         case 'invite': {
             const threePidContent = content.third_party_invite;
@@ -50,7 +50,9 @@ function textForMemberEvent(ev): () => string | null {
             }
         }
         case 'ban':
-            return () => _t('%(senderName)s banned %(targetName)s.', {senderName, targetName}) + ' ' + getReason();
+            return () => reason
+                ? _t('%(senderName)s banned %(targetName)s. Reason: %(reason)s', { senderName, targetName, reason })
+                : _t('%(senderName)s banned %(targetName)s.', { senderName, targetName });
         case 'join':
             if (prevContent && prevContent.membership === 'join') {
                 if (prevContent.displayname && content.displayname && prevContent.displayname !== content.displayname) {
@@ -90,17 +92,28 @@ function textForMemberEvent(ev): () => string | null {
                 if (prevContent.membership === "invite") {
                     return () => _t('%(targetName)s rejected the invitation.', { targetName });
                 } else {
-                    return () => _t('%(targetName)s left the room.', {targetName});
+                    return () => reason
+                        ? _t('%(targetName)s left the room. Reason: %(reason)s', { targetName, reason })
+                        : _t('%(targetName)s left the room.', { targetName });
                 }
             } else if (prevContent.membership === "ban") {
                 return () => _t('%(senderName)s unbanned %(targetName)s.', { senderName, targetName });
             } else if (prevContent.membership === "invite") {
-                return () => _t('%(senderName)s withdrew %(targetName)s\'s invitation.', {
+                return () => reason
+                    ? _t('%(senderName)s withdrew %(targetName)s\'s invitation. Reason: %(reason)s', {
                         senderName,
                         targetName,
-                }) + ' ' + getReason();
+                        reason,
+                    })
+                    : _t('%(senderName)s withdrew %(targetName)s\'s invitation.', { senderName, targetName })
             } else if (prevContent.membership === "join") {
-                return () => _t('%(senderName)s kicked %(targetName)s.', {senderName, targetName}) + ' ' + getReason();
+                return () => reason
+                    ? _t('%(senderName)s kicked %(targetName)s. Reason: %(reason)s', {
+                        senderName,
+                        targetName,
+                        reason,
+                    })
+                    : _t('%(senderName)s kicked %(targetName)s.', { senderName, targetName });
             } else {
                 return null;
             }

src/i18n/strings/en_EN.json

@@ -489,10 +489,10 @@
     "Converts the room to a DM": "Converts the room to a DM",
     "Converts the DM to a room": "Converts the DM to a room",
     "Displays action": "Displays action",
-    "Reason": "Reason",
     "%(targetName)s accepted the invitation for %(displayName)s.": "%(targetName)s accepted the invitation for %(displayName)s.",
     "%(targetName)s accepted an invitation.": "%(targetName)s accepted an invitation.",
     "%(senderName)s invited %(targetName)s.": "%(senderName)s invited %(targetName)s.",
+    "%(senderName)s banned %(targetName)s. Reason: %(reason)s": "%(senderName)s banned %(targetName)s. Reason: %(reason)s",
     "%(senderName)s banned %(targetName)s.": "%(senderName)s banned %(targetName)s.",
     "%(oldDisplayName)s changed their display name to %(displayName)s.": "%(oldDisplayName)s changed their display name to %(displayName)s.",
     "%(senderName)s set their display name to %(displayName)s.": "%(senderName)s set their display name to %(displayName)s.",
@@ -503,9 +503,12 @@
     "%(senderName)s made no change.": "%(senderName)s made no change.",
     "%(targetName)s joined the room.": "%(targetName)s joined the room.",
     "%(targetName)s rejected the invitation.": "%(targetName)s rejected the invitation.",
+    "%(targetName)s left the room. Reason: %(reason)s": "%(targetName)s left the room. Reason: %(reason)s",
     "%(targetName)s left the room.": "%(targetName)s left the room.",
     "%(senderName)s unbanned %(targetName)s.": "%(senderName)s unbanned %(targetName)s.",
+    "%(senderName)s withdrew %(targetName)s's invitation. Reason: %(reason)s": "%(senderName)s withdrew %(targetName)s's invitation. Reason: %(reason)s",
     "%(senderName)s withdrew %(targetName)s's invitation.": "%(senderName)s withdrew %(targetName)s's invitation.",
+    "%(senderName)s kicked %(targetName)s. Reason: %(reason)s": "%(senderName)s kicked %(targetName)s. Reason: %(reason)s",
     "%(senderName)s kicked %(targetName)s.": "%(senderName)s kicked %(targetName)s.",
     "%(senderDisplayName)s changed the topic to \"%(topic)s\".": "%(senderDisplayName)s changed the topic to \"%(topic)s\".",
     "%(senderDisplayName)s removed the room name.": "%(senderDisplayName)s removed the room name.",
@@ -1410,6 +1413,7 @@
     "Failed to unban": "Failed to unban",
     "Unban": "Unban",
     "Banned by %(displayName)s": "Banned by %(displayName)s",
+    "Reason": "Reason",
     "Error changing power level requirement": "Error changing power level requirement",
     "An error occurred changing the room's power level requirements. Ensure you have sufficient permissions and try again.": "An error occurred changing the room's power level requirements. Ensure you have sufficient permissions and try again.",
     "Error changing power level": "Error changing power level",