not perfect - but done

src/app.ts

@@ -1,5 +1,4 @@
 import express from 'express';
-const stam = 'fds'
 import routes from './routes';
 
 const app = express();

src/data/timeSlots.json

@@ -31,8 +31,8 @@
     },
     {
       "id": 4,
-      "start_time": "2023-09-18 14:00:00",
-      "end_time": "2023-09-18 15:00:00",
+      "start_time": "2023-04-26 14:00:00",
+      "end_time": "2023-04-26 15:00:00",
       "supported_postcodes": [
         "W1H 1LJ",
         "5555555",

src/handlers.ts

@@ -1,17 +1,20 @@
 import { Request, Response } from 'express';
+import dateModule from 'date-and-time';
+
 import { resolveAddress } from './geocoding';
 import { Address, AvailableTimeslots } from './types';
 import { randomUUID } from 'crypto';
 import { getAvailableTimeSlots } from './services/timeslotsService';
 import { getHolidays } from './services/holidaysService';
 
-const dateModule = require('date-and-time')
 const dateFormat = 'YYYY-MM-DD HH:MM:SS';
 
-// create a hashing for caching delivery slots. this needs to be a caching db.
+// create a hashing for caching delivery slots.
 const deliveriesCache = new Map();
-// create a hashing for caching timeslots. this needs to be a caching db.
+// create a hashing for caching timeslots.
 const slotsInUse = new Map();
+// orders by dates caching.
+const ordersByDates = new Map();
 
 export const resolveAddressHandler = (req: Request, res: Response) => {
   if (!req.body.searchTerm) {
@@ -66,24 +69,37 @@ export const deliveriesHandler = (req: Request, res: Response) => {
 
   // Idea: create new delivery for user
   // the date needs to be in "2023-09-18 14:00:00" format
-  const now = new Date();
-  const date = dateModule.format(now, dateFormat);
+  const deliveryCreatedDate = dateModule.format(new Date(), dateFormat);
+  const date = deliveryCreatedDate.split(' ')[0];
 
   const delivery = {
     _id: deliveryId,
     userId,
     slotId,
-    deliveryCreatedDate: date
+    deliveryCreatedDate: deliveryCreatedDate
   };
+
+  // INFO: This is a very simple implementation of caching.
+  // INFO: In my opinion, transaction should be used to avoid data inconsistency.
+
   if (slotsInUse.has(slotId)) {
     slotsInUse.get(slotId).push(deliveryId);
   } else {
     slotsInUse.set(slotId, [deliveryId]);
   }
+
+  if (ordersByDates.has(date)) {
+    ordersByDates.get(date).push(deliveryId);
+  } else {
+    ordersByDates.set(date, [deliveryId]);
+  }
+
   deliveriesCache.set(deliveryId, delivery);
 
+  console.log("ordersByDates", ordersByDates)
   console.log("deliveriesCache", deliveriesCache)
   console.log("slotsInUse", slotsInUse)
+
   res.status(200).json(delivery);
 };
 
@@ -117,13 +133,33 @@ export const cancelDeliveryHandler = (req: Request, res: Response) => {
 
 export const dailyDeliveriesHandler = (req: Request, res: Response) => {
   // TODO: Implement daily deliveries functionality
-  // GET /deliveries/daily - retrieve all today’s deliveries - by day by slotId.date
-  // get today's slots in slots 
+  // GET /deliveries/daily - retrieve all today’s deliveries - by today in ordersByDates
+  const date = dateModule.format(new Date(), dateFormat).split(' ')[0];
+  const todaysOrders = [];
+  if (ordersByDates.has(date)) {
+    ordersByDates.get(date).forEach((orderId) => {
+      todaysOrders.push(deliveriesCache.get(orderId));
+    });
+  }
 
+
+  res.status(200).json(todaysOrders);
 };
 
 export const weeklyDeliveriesHandler = (req: Request, res: Response) => {
   // TODO: Implement weekly deliveries functionality
+  // GET /deliveries/weekly - retrieve all week deliveries - from today to 7 days later in ordersByDates
+  // this array will contain 7 elements - each element will be dates in the next 7 days
+  // ["today", "tomorrow" ... ]
+  const today = new Date();
+  const weeklyOrders = [];
+  for (let i = 0; i < 7; i++) {
+    const date = dateModule.format(new Date(today.setDate(today.getDate() + i)), dateFormat).split(' ')[0];
+    if (ordersByDates.has(date)) {
+      weeklyOrders.push(deliveriesCache.get(ordersByDates.get(date)));
+    }
+  }
+  res.status(200).json(weeklyOrders);
 };
 
 
@@ -148,7 +184,7 @@ async function filterOutHolidaysByCountryCode(address: Address, availableTimeSlo
 }
 
 
-async function availableTimeSlots(address: Address): Promise<AvailableTimeslots []> {
+async function availableTimeSlots(address: Address): Promise<AvailableTimeslots[]> {
   const availableTimeSlot = [];
   const timeslots = await getAvailableTimeSlots();
   // check by postcode if any available timeslots

src/index.ts

@@ -1,6 +1,8 @@
+// INFO: this is a simple in-memory cache, for demo purposes only. this app will not scale!
+// INFO: SQL database is required for continuing this application!
+
 import app from './app';
 
-const env = process.env.NODE_ENV || 'development';
 const PORT = process.env.PORT || 3000;
 
 app.listen(PORT, () => {