contacts.js

import fs from "fs/promises";

import path from "path";

import { nanoid } from "nanoid";

const contactsPath = path.resolve("db/contacts.json");

export async function listContacts() {
  try {
    const data = await fs.readFile(contactsPath, "utf-8");
    return JSON.parse(data);
  } catch (error) {
    throw new Error(error.message);
  }
}

export async function getContactById(contactId) {
  try {
    const contacts = await listContacts();
    const resultById = contacts.find((contact) => contact.id === contactId);
    return resultById || null;
  } catch (error) {
    throw new Error(error.message);
  }
}

export async function removeContact(contactId) {
  try {
    const contacts = await listContacts();
    const contactToRemove = contacts.find(
      (contact) => contact.id === contactId
    );
    if (!contactToRemove) return null;
    const updatedContacts = contacts.filter(({ id }) => id !== contactId);
    await fs.writeFile(contactsPath, JSON.stringify(updatedContacts, null, 2));
    return contactToRemove;
  } catch (error) {
    throw new Error(error.message);
  }
}

export async function addContact(name, email, phone) {
  try {
    const contacts = await listContacts();
    const newContact = { id: nanoid(), name, email, phone };
    contacts.push(newContact);
    await fs.writeFile(contactsPath, JSON.stringify(contacts, null, 2));
    return newContact;
  } catch (error) {
    throw new Error(error.message);
  }
}