IO-2426 Add FCM Cache update for conversation aggregate count.

client/src/utils/fcm-handler.js

@@ -12,6 +12,13 @@ export default async function FcmHandler({ client, payload }) {
           },
         },
       });
+      client.cache.modify({
+        fields: {
+          messages_aggregate(cached) {
+            return { aggregate: { count: cached.aggregate.count + 1 } };
+          },
+        },
+      });
       break;
     case "messaging-outbound":
       client.cache.modify({
@@ -30,6 +37,7 @@ export default async function FcmHandler({ client, payload }) {
       });
       break;
     case "messaging-mark-conversation-read":
+      let previousUnreadCount = 0;
       client.cache.modify({
         id: client.cache.identify({
           __typename: "conversations",
@@ -37,10 +45,22 @@ export default async function FcmHandler({ client, payload }) {
         }),
         fields: {
           messages_aggregate(cached) {
+            previousUnreadCount = cached.aggregate.count;
             return { aggregate: { count: 0 } };
           },
         },
       });
+      client.cache.modify({
+        fields: {
+          messages_aggregate(cached) {
+            return {
+              aggregate: {
+                count: cached.aggregate.count - previousUnreadCount,
+              },
+            };
+          },
+        },
+      });
       break;
     default:
       console.log("No payload type set.");