Hw02 express

models/contacts.js

@@ -1,19 +1,99 @@
-// const fs = require('fs/promises')
+const fs = require('fs').promises;
+const { v4: uuidv4 } = require('uuid');
+const Joi = require('joi');
 
-const listContacts = async () => {}
+const contactsPath = './models/contacts.json';
 
-const getContactById = async (contactId) => {}
+const validationSchema = Joi.object({
+  name: Joi.string().alphanum().min(3).max(20).required(),
+  email: Joi.string().email({ minDomainSegments: 2, tlds: { allow: ['com', 'pl'] } }).required(),
+  phone: Joi.string().required(),
+});
 
-const removeContact = async (contactId) => {}
+async function listContacts() {
+  try {
+    const data = await fs.readFile(contactsPath, 'utf8');
+    return JSON.parse(data);
+  } catch (err) {
+    throw new Error('Error reading contacts:', err.message);
+  }
+}
+
+async function getContactById(contactId) {
+  try {
+    const contacts = await listContacts();
+    return contacts.find(contact => contact.id === contactId) || null;
+  } catch (err) {
+    throw new Error(`Error finding contact with ID ${contactId}:`, err.message);
+  }
+}
+
+async function removeContact(contactId) {
+  try {
+    const contacts = await listContacts();
+    const updatedContacts = contacts.filter(contact => contact.id !== contactId);
 
-const addContact = async (body) => {}
+    if (contacts.length === updatedContacts.length) {
+      console.log(`Contact with ID ${contactId} not found.`);
+      return;
+    }
 
-const updateContact = async (contactId, body) => {}
+    await fs.writeFile(contactsPath, JSON.stringify(updatedContacts, null, 2));
+    console.log(`Contact with ID ${contactId} has been removed.`);
+  } catch (err) {
+    throw new Error(`Error removing contact with ID ${contactId}:`, err.message);
+  }
+}
+
+async function addContact(name, email, phone) {
+  try {
+    const { error } = validationSchema.validate({ name, email, phone });
+    if (error) {
+      throw new Error(`Validation error: ${error.details[0].message}`);
+    }
+
+    const contacts = await listContacts();
+    const newContact = {
+      id: uuidv4(),
+      name,
+      email,
+      phone,
+    };
+
+    contacts.push(newContact);
+    await fs.writeFile(contactsPath, JSON.stringify(contacts, null, 2));
+    console.log('Contact has been added:', newContact);
+    return newContact;
+  } catch (err) {
+    throw new Error('Error adding contact:', err.message);
+  }
+}
+
+async function updateContact(contactId, body) {
+  try {
+    const { error } = validationSchema.validate(body);
+    if (error) {
+      throw new Error(`Validation error: ${error.details[0].message}`);
+    }
+
+    const contacts = await listContacts();
+    const contactIndex = contacts.findIndex(contact => contact.id === contactId);
+    if (contactIndex === -1) return null;
+
+    const updatedContact = { ...contacts[contactIndex], ...body };
+    contacts[contactIndex] = updatedContact;
+
+    await fs.writeFile(contactsPath, JSON.stringify(contacts, null, 2));
+    return updatedContact;
+  } catch (err) {
+    throw new Error(`Error updating contact with ID ${contactId}:`, err.message);
+  }
+}
 
 module.exports = {
   listContacts,
   getContactById,
   removeContact,
   addContact,
   updateContact,
-}
+};

models/contacts.json

@@ -59,4 +59,4 @@
     "email": "[email protected]",
     "phone": "(748) 206-2688"
   }
-]
+]

package.json

@@ -9,10 +9,12 @@
     "lint:fix": "eslint --fix **/*.js"
   },
   "dependencies": {
-    "cors": "2.8.5",
+    "cors": "^2.8.5",
     "cross-env": "7.0.3",
-    "express": "4.17.1",
-    "morgan": "1.10.0"
+    "express": "^4.17.1",
+    "joi": "^17.13.3",
+    "morgan": "^1.10.0",
+    "uuid": "^11.0.2"
   },
   "devDependencies": {
     "eslint": "7.19.0",
@@ -21,6 +23,11 @@
     "eslint-plugin-import": "2.25.3",
     "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-promise": "5.2.0",
-    "nodemon": "2.0.15"
-  }
+    "nodemon": "^2.0.15"
+  },
+  "description": "Wykonaj forka tego repozytorium, aby wykonywać zadania domowe (2-6). Fork utworzy repozytorium na Twoim koncie na http://github.com",
+  "main": ".eslintrc.js",
+  "keywords": [],
+  "author": "",
+  "license": "ISC"
 }