feat: group all-account rows by instrument and day (WealthLedger/main#47) (#126)

src/entities/brokerage-event/model/event-key.ts

@@ -1,5 +1,13 @@
 import type { BrokerageEvent } from "../api/useBrokerageEvents";
 
+function brokerageEventGroupKey(event: BrokerageEvent): null | string {
+	const identity = event.instrumentUid || event.figi || event.isin;
+
+	return identity
+		? JSON.stringify([event.date, identity, event.type, event.dateKind])
+		: null;
+}
+
 function brokerageEventKey(event: BrokerageEvent) {
 	return JSON.stringify([
 		event.account?.id, event.type, event.date, event.instrumentUid,
@@ -7,4 +15,4 @@ function brokerageEventKey(event: BrokerageEvent) {
 	]);
 }
 
-export { brokerageEventKey };
+export { brokerageEventGroupKey, brokerageEventKey };