feat(housekeeping): persist operator preferences

src/features/housekeeping/foundation/preferences/repository.ts

@@ -0,0 +1,49 @@
+import type { HousekeepingPreferences } from "./schema";
+import {
+	defaultHousekeepingPreferences,
+	parseHousekeepingPreferences,
+} from "./schema";
+
+export interface HousekeepingPreferencesStorageRow {
+	schemaVersion: number;
+	payload: string;
+}
+
+export interface HousekeepingPreferencesStorage {
+	findByUserId(
+		userId: number,
+	): Promise<HousekeepingPreferencesStorageRow | null>;
+	upsert(row: {
+		userId: number;
+		schemaVersion: 1;
+		payload: string;
+	}): Promise<void>;
+}
+
+export interface HousekeepingPreferencesRepository {
+	read(userId: number): Promise<HousekeepingPreferences>;
+	upsert(userId: number, value: HousekeepingPreferences): Promise<void>;
+}
+
+export function createHousekeepingPreferencesRepository(
+	storage: HousekeepingPreferencesStorage,
+): HousekeepingPreferencesRepository {
+	return {
+		async read(userId) {
+			const row = await storage.findByUserId(userId);
+			if (!row) return defaultHousekeepingPreferences();
+			if (row.schemaVersion !== 1) {
+				throw new Error("unsupported housekeeping preferences schema version");
+			}
+
+			return parseHousekeepingPreferences(row.payload);
+		},
+		async upsert(userId, value) {
+			await storage.upsert({
+				userId,
+				schemaVersion: value.schemaVersion,
+				payload: JSON.stringify(value),
+			});
+		},
+	};
+}