Implement contact management features with CRUD operations and valida…

models/contacts.js

@@ -1,19 +1,103 @@
-// const fs = require('fs/promises')
+const fs = require("fs").promises;
+const path = require("path");
+const contactsPath = path.join(__dirname, "contacts.json");
 
-const listContacts = async () => {}
+async function generateId() {
+  const { nanoid } = await import("nanoid");
+  return nanoid();
+}
+
+const listContacts = async () => {
+  try {
+    const data = await fs.readFile(contactsPath, "utf8");
+    const contacts = JSON.parse(data);
+    return contacts;
+  } catch (err) {
+    console.log(err.message);
+  }
+};
 
-const getContactById = async (contactId) => {}
+const getContactById = async (contactId) => {
+  try {
+    const contacts = await listContacts();
+    const contact = contacts.find(
+      (contact) => contact.id === contactId.toString()
+    );
+    return contact;
+  } catch (err) {
+    console.log(err.message);
+  }
+};
 
-const removeContact = async (contactId) => {}
+const removeContact = async (contactId) => {
+  try {
+    const contacts = await listContacts();
+    if (contacts) {
+      const contactExists = contacts.some(
+        (contact) => contact.id === contactId.toString()
+      );
+      if (!contactExists) {
+        return false;
+      }
+      const updatedContacts = contacts.filter(
+        (contact) => contact.id !== contactId.toString()
+      );
+      await fs.writeFile(
+        contactsPath,
+        JSON.stringify(updatedContacts, null, 2)
+      );
+      return true;
+    }
+  } catch (err) {
+    console.log(err.message);
+  }
+};
 
-const addContact = async (body) => {}
+const addContact = async (body) => {
+  try {
+    const contacts = await listContacts();
+    const { name, email, phone } = body;
+    const newId = (await generateId()).toString();
+    const newContact = { id: newId, name, email, phone };
+    contacts.push(newContact);
+    await fs.writeFile(contactsPath, JSON.stringify(contacts, null, 2));
+    return newContact;
+  } catch (err) {
+    console.log(err.message);
+  }
+};
 
-const updateContact = async (contactId, body) => {}
+const updateContact = async (contactId, body) => {
+  try {
+    const contacts = await listContacts();
+    if (contacts) {
+      const contactExists = contacts.some(
+        (contact) => contact.id === contactId.toString()
+      );
+      if (!contactExists) {
+        return false;
+      } else {
+        const { name, email, phone } = body;
+        const updatedContact = { id: contactId, name, email, phone };
+        const updatedContacts = contacts.map((contact) =>
+          contact.id === contactId.toString() ? updatedContact : contact
+        );
+        await fs.writeFile(
+          contactsPath,
+          JSON.stringify(updatedContacts, null, 2)
+        );
+        return updatedContact;
+      }
+    }
+  } catch (err) {
+    console.log(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": {
+    "@hapi/joi": "^17.1.1",
     "cors": "2.8.5",
     "cross-env": "7.0.3",
     "express": "4.17.1",
-    "morgan": "1.10.0"
+    "morgan": "1.10.0",
+    "nanoid": "^5.1.0"
   },
   "devDependencies": {
     "eslint": "7.19.0",