feat: basic onboarding flow\

apps/backend/src/modules/onboarding/lib/helpers.ts

@@ -0,0 +1,35 @@
+import type { BillingType, OnboardingGroupDto, WeekDay } from '@gruperly/shared';
+
+type PriceLike = { toString(): string };
+
+export type OnboardingGroupRecord = {
+  id: string;
+  name: string;
+  description: string | null;
+  createdById: string;
+  createdAt: Date;
+  updatedAt: Date;
+  days: WeekDay[] | null;
+  time: string | null;
+  capacity: number | null;
+  price: PriceLike | number | null;
+  billingType: BillingType | null;
+  dueDay: number | null;
+};
+
+export function toOnboardingGroupDto(record: OnboardingGroupRecord): OnboardingGroupDto {
+  return {
+    id: record.id,
+    name: record.name,
+    description: record.description,
+    createdById: record.createdById,
+    createdAt: record.createdAt.toISOString(),
+    updatedAt: record.updatedAt.toISOString(),
+    days: record.days,
+    time: record.time,
+    capacity: record.capacity,
+    price: record.price == null ? null : Number(record.price.toString()),
+    billingType: record.billingType,
+    dueDay: record.dueDay,
+  };
+}

apps/backend/src/modules/onboarding/lib/index.ts

@@ -0,0 +1 @@
+export { type OnboardingGroupRecord, toOnboardingGroupDto } from './helpers';