Handle chatroom deletions

frontend/setupChelonia.js

@@ -22,8 +22,41 @@ const handleDeletedContract = async (contractID: string) => {
 
   switch (cheloniaState.type) {
     case 'gi.contracts/chatroom': {
-      // TODO: Leave chatroom on our identity contract or our group, if we've
-      // joined.
+      const identityState = rootGetters.currentIdentityState
+      if (identityState.chatRooms?.[contractID]) {
+        // TODO
+        // Currently missing the ability to leave a DM
+      } else {
+        // This is a group chatroom. To determine which group the chatroom
+        // belongs to, we need to go over each group, since there isn't a
+        // chatroom->group relationship stored.
+        const cIDs = Object.entries(identityState.groups || {}).filter(([cID, state]) => {
+          return !state.hasLeft
+        }).map(([cID]) => {
+          return cID
+        })
+
+        for (const cID of cIDs) {
+          const groupState = await sbp('chelonia/contract/state', cID).catch(() => {})
+          // If the chatroom isn't part of this group, continue
+          if (!groupState?.chatRooms?.[contractID]) continue
+
+          if (!groupState.chatRooms[contractID].deletedDate) {
+            // If the chatroom hasn't been 'deleted' in the group, attempt to do
+            // so now.
+            await sbp('gi.actions/group/deleteChatRoom', {
+              contractID: cID,
+              data: { chatRoomID: contractID }
+            }).catch(e => {
+              console.warn(`[handleDeletedContract] ${e.name} thrown by gi.actions/group/deleteChatRoom ${cID} for ${contractID}:`, e)
+            })
+          }
+
+          // No need to continue in the loop, as chatrooms belong to a single
+          // group
+          break
+        }
+      }
       break
     }
     case 'gi.contracts/group': {