Clean up old messages, better handle errors from sending

js/background.js

@@ -346,6 +346,49 @@
       });
     }
 
+    Views.Initialization.setMessage(window.i18n('optimizingApplication'));
+
+    window.log.info('Cleanup: starting...');
+    const messagesForCleanup = await window.Signal.Data.getOutgoingWithoutExpiresAt(
+      {
+        MessageCollection: Whisper.MessageCollection,
+      }
+    );
+    window.log.info(
+      `Cleanup: Found ${messagesForCleanup.length} messages for cleanup`
+    );
+    await Promise.all(
+      messagesForCleanup.map(async message => {
+        const delivered = message.get('delivered');
+        const sentAt = message.get('sent_at');
+        const expirationStartTimestamp = message.get(
+          'expirationStartTimestamp'
+        );
+
+        if (message.hasErrors()) {
+          return;
+        }
+
+        if (delivered) {
+          window.log.info(
+            `Cleanup: Starting timer for delivered message ${sentAt}`
+          );
+          message.set(
+            'expirationStartTimestamp',
+            expirationStartTimestamp || sentAt
+          );
+          await message.setToExpire();
+          return;
+        }
+
+        window.log.info(`Cleanup: Deleting unsent message ${sentAt}`);
+        await window.Signal.Data.removeMessage(message.id, {
+          Message: Whisper.Message,
+        });
+      })
+    );
+    window.log.info('Cleanup: complete');
+
     Views.Initialization.setMessage(window.i18n('loading'));
 
     // Note: We are not invoking the second set of IndexedDB migrations because it is