added models and repositories

package.json

@@ -9,7 +9,9 @@
     "dev:server": "ts-node-dev --inspect --transpileOnly --ignore-watch node_modules src/server.ts"
   },
   "dependencies": {
-    "express": "^4.17.1"
+    "date-fns": "^2.12.0",
+    "express": "^4.17.1",
+    "uuidv4": "^6.0.8"
   },
   "devDependencies": {
     "@types/express": "^4.17.6",

prettier.config.js

@@ -1,5 +1,5 @@
 module.exports = {
   singleQuote: true,
   trailingComma: 'all',
-  arrowParams: 'avoid',
+  arrowParens: 'avoid',
 };

src/models/Appointment.ts

@@ -0,0 +1,17 @@
+import { uuid } from 'uuidv4';
+
+class Appointment {
+  id: string;
+
+  provider: string;
+
+  date: Date;
+
+  constructor(provider: string, date: Date) {
+    this.id = uuid();
+    this.provider = provider;
+    this.date = date;
+  }
+}
+
+export default Appointment;

src/repositories/AppointmentsRepository.ts

@@ -0,0 +1,30 @@
+import { isEqual } from 'date-fns';
+import Appointment from '../models/Appointment';
+
+class AppointmentsRepository {
+  private appointments: Appointment[];
+
+  constructor() {
+    this.appointments = [];
+  }
+
+  public create(provider: string, date: Date): Appointment {
+    const appointment = new Appointment(provider, date);
+    this.appointments.push(appointment);
+
+    return appointment;
+  }
+
+  public all(): Appointment[] {
+    return this.appointments;
+  }
+
+  public findByDate(date: Date): Appointment | null {
+    return (
+      this.appointments.find(appointment => isEqual(date, appointment.date)) ||
+      null
+    );
+  }
+}
+
+export default AppointmentsRepository;

src/routes/appointments.router.ts

@@ -0,0 +1,29 @@
+import { Router } from 'express';
+import { startOfHour, parseISO } from 'date-fns';
+import AppointmentsRepository from '../repositories/AppointmentsRepository';
+
+const router = Router();
+
+const appointmentsRepository = new AppointmentsRepository();
+
+router.get('/', (request, response) => {
+  return response.json(appointmentsRepository.all());
+});
+
+router.post('/', (request, response) => {
+  const { provider, date } = request.body;
+
+  const parsedDate = startOfHour(parseISO(date));
+
+  if (appointmentsRepository.findByDate(parsedDate)) {
+    return response
+      .status(400)
+      .json({ message: 'This date is already booked.' });
+  }
+
+  const appointment = appointmentsRepository.create(provider, parsedDate);
+
+  return response.json(appointment);
+});
+
+export default router;

src/routes/index.ts

@@ -1,7 +1,10 @@
 import { Router } from 'express';
+import appointmentsRouter from './appointments.router';
 
 const routes = Router();
 
+routes.use('/appointments', appointmentsRouter);
+
 routes.get('/hello', (request, response) => {
   return response.json({ message: 'hello, world!' });
 });

src/server.ts

@@ -6,8 +6,4 @@ const app = express();
 app.use(express.json());
 app.use(router);
 
-app.get('/', (request, response) => {
-  return response.send('Hello, typescript!');
-});
-
 app.listen(3333);