Handle failed polling

src/screens/Messages/Conversation/MessageListError.tsx

@@ -22,6 +22,9 @@ export function MessageListError({
       [ConvoItemError.ResumeFailed]: _(
         msg`There was an issue connecting to the chat.`,
       ),
+      [ConvoItemError.PollFailed]: _(
+        msg`This chat was disconnected due to a network error.`,
+      ),
     }[item.code]
   }, [_, item.code])
 

src/state/messages/convo.ts

@@ -28,6 +28,7 @@ export enum ConvoStatus {
 export enum ConvoItemError {
   HistoryFailed = 'historyFailed',
   ResumeFailed = 'resumeFailed',
+  PollFailed = 'pollFailed',
 }
 
 export enum ConvoError {
@@ -194,6 +195,7 @@ export class Convo {
   private historyCursor: string | undefined | null = undefined
   private isFetchingHistory = false
   private eventsCursor: string | undefined = undefined
+  private pollingFailure = false
 
   private pastMessages: Map<
     string,
@@ -527,6 +529,11 @@ export class Convo {
     ) {
       if (this.pendingEventIngestion) return
 
+      /*
+       * Represents a failed state, which is retryable.
+       */
+      if (this.pollingFailure) return
+
       setTimeout(async () => {
         this.pendingEventIngestion = this.ingestLatestEvents()
         await this.pendingEventIngestion
@@ -537,6 +544,8 @@ export class Convo {
   }
 
   async ingestLatestEvents() {
+    try {
+      // throw new Error('UNCOMMENT TO TEST POLL FAILURE')
       const response = await this.agent.api.chat.bsky.convo.getLog(
         {
           cursor: this.eventsCursor,
@@ -609,6 +618,22 @@ export class Convo {
       if (needsCommit) {
         this.commit()
       }
+    } catch (e: any) {
+      logger.error('Convo: failed to poll events')
+      this.pollingFailure = true
+      this.footerItems.set(ConvoItemError.PollFailed, {
+        type: 'error-recoverable',
+        key: ConvoItemError.PollFailed,
+        code: ConvoItemError.PollFailed,
+        retry: () => {
+          this.footerItems.delete(ConvoItemError.PollFailed)
+          this.pollingFailure = false
+          this.commit()
+          this.pollEvents()
+        },
+      })
+      this.commit()
+    }
   }
 
   async sendMessage(message: ChatBskyConvoSendMessage.InputSchema['message']) {