Extract the operational Model Delivery PWA

src/analytics.ts

@@ -0,0 +1,46 @@
+import type { LocalDelivery } from './db';
+
+export function toDateKey(date: Date): string {
+  const year = date.getFullYear();
+  const month = String(date.getMonth() + 1).padStart(2, '0');
+  const day = String(date.getDate()).padStart(2, '0');
+  return `${year}-${month}-${day}`;
+}
+
+export function dateFromKey(key: string): Date {
+  const [year, month, day] = key.split('-').map(Number);
+  return new Date(year!, month! - 1, day!, 12);
+}
+
+export function deliveryDateKey(delivery: Pick<LocalDelivery, 'scheduledDate' | 'createdAt'>): string {
+  return delivery.scheduledDate ?? delivery.createdAt.slice(0, 10);
+}
+
+export function addDays(date: Date, days: number): Date {
+  const next = new Date(date);
+  next.setDate(next.getDate() + days);
+  return next;
+}
+
+export function weekStart(date: Date): Date {
+  const start = new Date(date.getFullYear(), date.getMonth(), date.getDate(), 12);
+  start.setDate(start.getDate() - start.getDay());
+  return start;
+}
+
+export function weekDates(anchor: Date): Date[] {
+  const start = weekStart(anchor);
+  return Array.from({ length: 7 }, (_, index) => addDays(start, index));
+}
+
+export function activeDeliveries(deliveries: LocalDelivery[]): LocalDelivery[] {
+  return deliveries.filter(delivery => !delivery.deletedAt && delivery.status !== 'cancelled');
+}
+
+export function deliveriesForDate(deliveries: LocalDelivery[], key: string): LocalDelivery[] {
+  return deliveries.filter(delivery => !delivery.deletedAt && deliveryDateKey(delivery) === key);
+}
+
+export function valueOf(deliveries: LocalDelivery[]): number {
+  return activeDeliveries(deliveries).reduce((sum, delivery) => sum + delivery.totalPriceAgorot, 0);
+}