Hm02

app.js

@@ -1,25 +1,26 @@
-const express = require('express')
-const logger = require('morgan')
-const cors = require('cors')
+const express = require('express');
+const logger = require('morgan');
+const cors = require('cors');
+const contactsRouter = require('./routes/api/contacts'); // Import the contacts route
 
-const contactsRouter = require('./routes/api/contacts')
+const app = express();
 
-const app = express()
+// Middleware setup
+app.use(logger('dev')); // Logging
+app.use(cors()); // Allow CORS
+app.use(express.json()); // Middleware to parse JSON requests
 
-const formatsLogger = app.get('env') === 'development' ? 'dev' : 'short'
-
-app.use(logger(formatsLogger))
-app.use(cors())
-app.use(express.json())
-
-app.use('/api/contacts', contactsRouter)
+// Use the contacts router
+app.use('/api/contacts', contactsRouter);
 
+// 404 handler for unknown routes
 app.use((req, res) => {
-  res.status(404).json({ message: 'Not found' })
-})
+  res.status(404).json({ message: 'Not found' });
+});
 
+// Global error handler
 app.use((err, req, res, next) => {
-  res.status(500).json({ message: err.message })
-})
+  res.status(500).json({ message: err.message });
+});
 
-module.exports = app
+module.exports = app;

models/contacts.js

@@ -1,19 +1,43 @@
-// const fs = require('fs/promises')
+const fs = require('fs/promises');
+const path = require('path');
+const { v4: uuidv4 } = require('uuid');
 
-const listContacts = async () => {}
+const contactsPath = path.join(__dirname, '../data/contacts.json');
 
-const getContactById = async (contactId) => {}
+const listContacts = async () => {
+  const data = await fs.readFile(contactsPath, 'utf8');
+  return JSON.parse(data);
+};
 
-const removeContact = async (contactId) => {}
+const getById = async (id) => {
+  const contacts = await listContacts();
+  return contacts.find((contact) => contact.id === id) || null;
+};
 
-const addContact = async (body) => {}
+const addContact = async ({ name, email, phone }) => {
+  const contacts = await listContacts();
+  const newContact = { id: uuidv4(), name, email, phone };
+  contacts.push(newContact);
+  await fs.writeFile(contactsPath, JSON.stringify(contacts, null, 2));
+  return newContact;
+};
 
-const updateContact = async (contactId, body) => {}
+const removeContact = async (id) => {
+  const contacts = await listContacts();
+  const filteredContacts = contacts.filter((contact) => contact.id !== id);
+  if (contacts.length === filteredContacts.length) return false;
+  await fs.writeFile(contactsPath, JSON.stringify(filteredContacts, null, 2));
+  return true;
+};
 
-module.exports = {
-  listContacts,
-  getContactById,
-  removeContact,
-  addContact,
-  updateContact,
-}
+const updateContact = async (id, updatedFields) => {
+  const contacts = await listContacts();
+  const index = contacts.findIndex((contact) => contact.id === id);
+  if (index === -1) return null;
+
+  contacts[index] = { ...contacts[index], ...updatedFields };
+  await fs.writeFile(contactsPath, JSON.stringify(contacts, null, 2));
+  return contacts[index];
+};
+
+module.exports = { listContacts, getById, addContact, removeContact, updateContact };