Jobify

Track Your Job Search

Project in Action - Jobify

Support

Find the App Useful? You can always buy me a coffee

Run The App Locally

npm run install-dependencies

rename .env.temp to .env
setup values for - MONGO_URL, JWT_SECRET, JWT_LIFETIME

npm start

visit url http://localhost:3000/

Setup React App

create client folder
open terminal

cd client

npx create-react-app .

npm start

set editor/browser side by side
copy/paste assets from complete project

Spring Cleaning

in src remove
App.css
App.test.js
logo.svg
reportWebVitals.js
setupTests.js
fix App.js and index.js

Title and Favicon

change title in public/index.html
replace favicon.ico in public
resource Generate Favicons

Normalize.css and Global Styles

CSS in JS (styled-components)
saves times on the setup
less lines of css
speeds up the development
normalize.css
small CSS file that provides cross-browser consistency in the default styling of HTML elements.
normalize docs

npm install normalize.css

import 'normalize.css' in index.js
SET BEFORE 'index.css'
replace contents of index.css
if any questions about normalize or specific styles
Coding Addict - Default Starter Video
Repo - Default Starter Repo

Landing Page

zoom level 175%
markdown preview extension
get something on the screen
react router and styled components right after
create pages directory in the source
for now Landing.js
create component (snippets extension)
setup basic return

<h4>Landing Page<h4>

import logo.svg and main.svg
import Landing in App.js and render

Styled Components

CSS in JS
Styled Components
have logic and styles in component
no name collisions
apply javascript logic
Styled Components Docs
Styled Components Course

npm install styled-components

import styled from 'styled-components';

const El = styled.el`
  // styles go here
`;

no name collisions, since unique class
vscode-styled-components extension
colors and bugs
style entire react component

const Wrapper = styled.el``;

const Component = () => {
  return (
    <Wrapper>
      <h1> Component</h1>
    </Wrapper>
  );
};

only responsible for styling
wrappers folder in assets

Logo and Images

logo built in Figma
Cool Images

Logo

create components folder in source
create Logo.js
move import and image logic
export as default
utilize index.js

React Router

Version 6
React Router Docs

npm install history@5 react-router-dom@6

import four components

import { BrowserRouter, Routes, Route, Link } from 'react-router-dom';

Connect to browser's URL with BrowserRouter
Routes instead of Switch

<BrowserRouter>
    <Routes>
      <Route path="/" element={<div>Dashboard</div>} />
      <Route path="/register" element={<div>Register</div>} />
      <Route path="/landing" element={<Landing />} />
      <Route path="*" element={<div>Error</div>}>
    </Routes>
</BrowserRouter>

<nav>
  <Link to='/'>Dashboard</Link>
  <Link to='/register'>Register</Link>
  <Link to='/landing'>Home</Link>
</nav>

go to Landing.js

import { Link } from 'react-router-dom';

return (
  <Link to='/register' className='btn btn-hero'>
    Login / Register
  </Link>
);

Setup Pages

create Error, Register, Dashboard pages
basic return
create index.js
import all the pages
export one by one
basically the same, as in components
import App.js
add to element={}
remove temp navbar

Error Page

import { Link } from 'react-router-dom';
import img from '../assets/images/not-found.svg';
import Wrapper from '../assets/wrappers/ErrorPage';

return (
  <Wrapper className='full-page'>
    <div>
      <img src={img} alt='not found' />
      <h3>text</h3>
      <p>text</p>
      <Link to='/'>back home</Link>
    </div>
  </Wrapper>
);

Auto Imports

use while developing
only sparingly while recording
better picture
messes with flow
just my preference
still use them, just not all the time

Register Page - Setup

show preview in Browser and themes

import { useState, useEffect } from 'react';
import { Logo } from '../components';
import Wrapper from '../assets/wrappers/RegisterPage';
// global context and useNavigate later

const initialState = {
  name: '',
  email: '',
  password: '',
  isMember: true,
};
// if possible prefer local state
// global state

function Register() {
  const [values, setValues] = useState(initialState);

  // global context and useNavigate later

  const handleChange = (e) => {
    console.log(e.target);
  };

  const onSubmit = (e) => {
    e.preventDefault();
    console.log(e.target);
  };
  return (
    <Wrapper className='full-page'>
      <form className='form' onSubmit={onSubmit}>
        <Logo />
        <h3>Login</h3>

        {/* name field */}
        <div className='form-row'>
          <label htmlFor='name' className='form-label'>
            name
          </label>

          <input
            type='text'
            value={values.name}
            name='name'
            onChange={handleChange}
            className='form-input'
          />
        </div>

        <button type='submit' className='btn btn-block'>
          submit
        </button>
      </form>
    </Wrapper>
  );
}

FormRow Component

create FormRow.js in components
setup import/export
setup one for email and password
hint "type,name,value"

const FormRow = ({ type, name, value, handleChange, labelText }) => {
  return (
    <div className='form-row'>
      <label htmlFor={name} className='form-label'>
        {labelText || name}
      </label>

      <input
        type={type}
        value={value}
        name={name}
        onChange={handleChange}
        className='form-input'
      />
    </div>
  );
};

export default FormRow;

Alert Component

right away setup as component
create Alert.js in components

const Alert = () => {
  return <div className='alert alert-danger'>alert goes here</div>;
};

export default Alert;

setup import/export
alert-danger or alert-success
eventually setup in global context
showAlert in initialState (true || false)
right after h3 login

values.showAlert && <Alert />;

Toggle Member

const toggleMember = () => {
  setValues({ ...values, isMember: !values.isMember });
};

return (
  <Wrapper>
    {/* control h3 */}

    <h3>{values.isMember ? 'Login' : 'Register'}</h3>

    {/* toggle name */}

    {!values.isMember && (
      <FormRow
        type='text'
        name='name'
        value={values.name}
        handleChange={handleChange}
      />
    )}

    {/* right after submit btn */}
    {/* toggle button */}

    <p>
      {values.isMember ? 'Not a member yet?' : 'Already a member?'}

      <button type='button' onClick={toggleMember} className='member-btn'>
        {values.isMember ? 'Register' : 'Login'}
      </button>
    </p>
  </Wrapper>
);

Global Context

in src create context directory
actions.js
reducer.js
appContext.js

import React, { useState, useReducer, useContext } from 'react';

export const initialState = {
  isLoading: false,
  showAlert: false,
  alertText: '',
  alertType: '',
};
const AppContext = React.createContext();
const AppProvider = ({ children }) => {
  const [state, setState] = useState(initialState);

  return (
    <AppContext.Provider
      value={{
        ...state,
      }}
    >
      {children}
    </AppContext.Provider>
  );
};
// make sure use
export const useAppContext = () => {
  return useContext(AppContext);
};

export { AppProvider };

index.js

import { AppProvider } from './context/appContext';

ReactDOM.render(
  <React.StrictMode>
    <AppProvider>
      <App />
    </AppProvider>
  </React.StrictMode>,
  document.getElementById('root')
);

import { useAppContext } from '../context/appContext';

const { isLoading, showAlert } = useAppContext();

switch to global showAlert

useReducer

React Tutorial
useReducer vs Redux
multiple reducers vs one

Wire Up Reducer

reducer.js;

const reducer = (state, action) => {
  throw new Error(`no such action :${action.type}`);
};
export default reducer;

appContext.js;

import reducer from './reducer';

const [state, dispatch] = useReducer(reducer, initialState);

Display Alert

actions.js;

export const DISPLAY_ALERT = 'SHOW_ALERT';

setup imports (reducer and appContext)

appContext.js

const displayAlert() =>{
  dispatch({type:DISPLAY_ALERT})
}

reducer.js;

if (action.type === DISPLAY_ALERT) {
  return {
    ...state,
    showAlert: true,
    alertType: 'danger',
    alertText: 'Please provide all values!',
  };
}

Alert.js in Components;

import { useAppContext } from '../context/appContext';

const Alert = () => {
  const { alertType, alertText } = useAppContext();
  return <div className={`alert alert-${alertType}`}>{alertText}</div>;
};

Display Alert

JS Nuggets - Dynamic Object Keys

appContext.js;

const handleChange = (e) => {
  setValues({ ...values, [e.target.name]: e.target.value });
};

get displayAlert function

appContext.js;

const onSubmit = (e) => {
  e.preventDefault();
  const { name, email, password, isMember } = values;
  if (!email || !password || (!isMember && !name)) {
    displayAlert();
    return;
  }
  console.log(values);
};

Clear Alert

technically optional

actions.js;

export const CLEAR_ALERT = 'CLEAR_ALERT';

setup imports (reducer and appContext)

reducer.js;

if (action.type === CLEAR_ALERT) {
  return {
    ...state,
    showAlert: false,
    alertType: '',
    alertText: '',
  };
}

appContext.js;

const displayAlert = () => {
  dispatch({
    type: DISPLAY_ALERT,
  });
  clearAlert();
};

const clearAlert = () => {
  setTimeout(() => {
    dispatch({
      type: CLEAR_ALERT,
    });
  }, 3000);
};

Setup Server

stop the dev server in client
cd ..
start setting up our server
setup package.json

npm init -y

create server.js
console.log('server running...')

node server

ES6 vs CommonJS

CommonJS;

const express = require('express');
const app = express();

ES6;

import express from 'express';
const app = express();

file extension .mjs

package.json

"type":"module"

Nodemon and Basic Express Server

npm install nodemon --save-dev

package.json

"start":"nodemon server"

npm install express

import express from 'express';
const app = express();

app.get('/', (req, res) => {
  res.send('Welcome!');
});

const port = process.env.PORT || 5000;

app.listen(port, () => console.log(`Server is listening on port ${port}...`));

Not Found Middleware

in the root create middleware folder
not-found.js
setup function
return 404 with message 'Route does not exist'
import in server.js
make sure to use .js extension
place after home route

Error Middleware

in the middleware create error-handler.js
setup function
accept 4 parameters, first one error
log error
return 500
json({msg:'there was an error'})
import in the server.js
make sure to use .js extension
place it last
eventually handle Mongoose Errors, just like in the node-express
showcase with async errors

ENV Variables

npm install dotenv

import dotenv from 'dotenv'
dotenv.config()
create .env
PORT=4000
.gitignore
/node_modules
.env

Connect to MongoDB

switched back to PORT=5000
remove Error from '/'
existing MongoDB Atlas Account

npm install mongoose

create db folder
create connect.js
setup connectDB(url)
in server.js create start() function
get connection string
setup as MONGO_URL in .env
provide credentials and DB Name

Auth Controller and Route Structure

create controllers
authController.js
create async functions

export { register, login, updateUser };

return res.send('function name')
create routes folder
authRoutes.js
setup express router
import functions from authController.js

router.route('/register').post(register);
router.route('/login').post(login);
router.route('/updateUser').patch(updateUser);

export default router;

import authRouter in server.js

app.use('/api/v1/auth', authRouter);

Jobs Controller and Route Structure

jobsController.js
create async functions

export { createJob, deleteJob, getAllJobs, updateJob, showStats };

return res.send('function name')
jobsRoutes.js
setup express router
import functions from jobsController.js

router.route('/').post(createJob).get(getAllJobs);
// place before :id
router.route('/stats').get(showStats);
router.route('/:id').delete(deleteJob).patch(updateJob);

export default router;

in server.js jobsRouter

app.use('/api/v1/jobs', jobsRouter);

Postman

URL global var
JOBIFY Collection
auth and jobs folders
setup routes

User Model

models folder
User.js
setup schema
name, email, password, lastName, location
all {type:String}

Validate Email

validate:{
  validator:(field)=> {return 2 > 1},
  message:'Please provide valid email'
  }

Validator Package

npm install validator

import in User.js
validator.isEmail

Register User - Initial Setup

authController
import User model
setup temporary try/catch
await User.create(req.body)
if success 201 with json({user}) (temp)
if error 500 with json({msg:'there was an error'})

Pass Error to Error Handler

next(error)

Express-Async-Errors Package

remove try/catch
Express-Async-Errors

npm install express-async-errors

in server.js
import 'express-async-errors'
use throw Error('error') instead of next(error)

Http Status Codes

constants for status codes
personal preference
provides consistency
less bugs
easier to read/manage
Http Status Codes

npm install http-status-codes

import/setup in authController and error-handler
setup defaultError

Custom Errors

Refactor Errors

create errors folder
create custom-api, bad-request, not-found, index.js files
add proper imports
setup index.js just like in the front-end
import {BadRequestError} in authController
gotcha "errors/index.js"

Hash Passwords

one way street, only compare hashed values
bcrypt.js

npm install bcryptjs

User Model
import bcrypt from 'bcryptjs'
await genSalt(10)
await hash(password , salt)
await compare(requestPassword , currentPassword)
mongoose middleware
UserSchema.pre('save',async function(){ "this" points to instance created by UserSchema })

Mongoose - Custom Instance Methods

Custom Instance Methods

UserSchema.methods.createJWT = function(){console.log(this)}
register controller
right after User.create()
invoke user.createJWT()

JWT

token
jsonwebtoken

npm install jsonwebtoken

User Model
import jwt from 'jsonwebtoken'
jwt.sign(payload,secret,options)
createJWT

return jwt.sign({ userId: this._id }, 'jwtSecret', { expiresIn: '1d' });

return jwt.sign({ userId: this._id }, process.env.JWT_SECRET, {
  expiresIn: process.env.JWT_LIFETIME,
});

JWT_SECRET and JWT_LIFETIME

Keys Generator
RESTART SERVER!!!!

Complete Register

password : {select:false}
complete response

Concurrently

front-end and backend (server)
run separate terminals
concurrently

npm install concurrently --save-dev

package.json

// --kill-others switch, all commands are killed if one dies
// --prefix client - folder
// cd client && npm start
// escape quotes

"scripts": {
    "server": "nodemon server --ignore client",
    "client": "npm start --prefix client",
    "start": "concurrently --kill-others-on-fail \"npm run server\" \" npm run client\""
  },

Cors Error

two fixes (cors package and proxy)

Cors Package

cors package

npm install cors

import cors from 'cors';

app.use(cors());

Proxy

access from anywhere
don't want to use full url

cra proxy

"proxy":"http://localhost:5000"

my preference to remove trailing slash /
restart app

Register User - Setup

appContext.js;

const initialState = {
  user: null,
  token: null,
  userLocation: '',
};

actions.js REGISTER_USER_BEGIN,SUCCESS,ERROR
import reducer,appContext

appContext.js;
const registerUser = async (currentUser) => {
  console.log(currentUser);
};

import in Register.js

Register.js;

const currentUser = { name, email, password };
if (isMember) {
  console.log('already a member');
} else {
  registerUser(currentUser);
}

return (
  <button type='submit' className='btn btn-block' disabled={isLoading}>
    submit
  </button>
);

Axios

axios docs
stop app
cd client

npm install axios

cd ..
restart app

Register User - Complete

appContext.js;

import axios from 'axios';

const registerUser = async (currentUser) => {
  dispatch({ type: REGISTER_USER_BEGIN });
  try {
    const response = await axios.post('/api/v1/auth/register', currentUser);
    console.log(response);
    const { user, token, location } = response.data;
    dispatch({
      type: REGISTER_USER_SUCCESS,
      payload: {
        user,
        token,
        location,
      },
    });

    // will add later
    // addUserToLocalStorage({
    //   user,
    //   token,
    //   location,
    // })
  } catch (error) {
    console.log(error.response);
    dispatch({
      type: REGISTER_USER_ERROR,
      payload: { msg: error.response.data.msg },
    });
  }
  clearAlert();
};

reducer.js;
if (action.type === REGISTER_USER_BEGIN) {
  return { ...state, isLoading: true };
}
if (action.type === REGISTER_USER_SUCCESS) {
  return {
    ...state,
    user: action.payload.user,
    token: action.payload.token,
    userLocation: action.payload.location,
    jobLocation: action.payload.location,
    isLoading: false,
    showAlert: true,
    alertType: 'success',
    alertText: 'User Created! Redirecting...',
  };
}
if (action.type === REGISTER_USER_ERROR) {
  return {
    ...state,
    isLoading: false,
    showAlert: true,
    alertType: 'danger',
    alertText: action.payload.msg,
  };
}

Navigate To Dashboard

Register.js;
import { useEffect } from 'react';
import { useNavigate } from 'react-router-dom';

const Register = () => {
  const { user } = useAppContext();
  const navigate = useNavigate();

  useEffect(() => {
    if (user) {
      setTimeout(() => {
        navigate('/');
      }, 3000);
    }
  }, [user, navigate]);
};

Local Storage

appContext.js;
const addUserToLocalStorage = ({ user, token, location }) => {
  localStorage.setItem('user', JSON.stringify(user));
  localStorage.setItem('token', token);
  localStorage.setItem('location', location);
};

const removeUserFromLocalStorage = () => {
  localStorage.removeItem('token');
  localStorage.removeItem('user');
  localStorage.removeItem('location');
};

const registerUser = async (currentUser) => {
  // in try block
  addUserToLocalStorage({
    user,
    token,
    location,
  });
};

// set as default
const token = localStorage.getItem('token');
const user = localStorage.getItem('user');
const userLocation = localStorage.getItem('location');

const initialState = {
  user: user ? JSON.parse(user) : null,
  token: token,
  userLocation: userLocation || '',
  jobLocation: userLocation || '',
};

Morgan Package

http logger middleware for node.js
morgan docs

npm install morgan

import morgan from 'morgan';

if (process.env.NODE_ENV !== 'production') {
  app.use(morgan('dev'));
}

UnauthenticatedError

unauthenticated.js in errors
import/export

import { StatusCodes } from 'http-status-codes';
import CustomAPIError from './custom-api.js';

class UnauthenticatedError extends CustomAPIError {
  constructor(message) {
    super(message);
    this.statusCode = StatusCodes.UNAUTHORIZED;
  }
}

Compare Password

User.js in models;

UserSchema.methods.comparePassword = async function (candidatePassword) {
  const isMatch = await bcrypt.compare(candidatePassword, this.password);
  return isMatch;
};

authController.js;
const login = async (req, res) => {
  const { email, password } = req.body;
  if (!email || !password) {
    throw new BadRequestError('Please provide all values');
  }
  const user = await User.findOne({ email }).select('+password');

  if (!user) {
    throw new UnauthenticatedError('Invalid Credentials');
  }
  const isPasswordCorrect = await user.comparePassword(password);
  if (!isPasswordCorrect) {
    throw new UnauthenticatedError('Invalid Credentials');
  }
  const token = user.createJWT();
  user.password = undefined;
  res.status(StatusCodes.OK).json({ user, token, location: user.location });
};

test in Postman

Login User - Setup

actions.js LOGIN_USER_BEGIN,SUCCESS,ERROR
import reducer,appContext

appContext.js;
const loginUser = async (currentUser) => {
  console.log(currentUser);
};

import in Register.js

Register.js;

if (isMember) {
  loginUser(currentUser);
} else {
  registerUser(currentUser);
}

Login User - Complete

appContext.js;
const loginUser = async (currentUser) => {
  dispatch({ type: LOGIN_USER_BEGIN });
  try {
    const { data } = await axios.post('/api/v1/auth/login', currentUser);
    const { user, token, location } = data;

    dispatch({
      type: LOGIN_USER_SUCCESS,
      payload: { user, token, location },
    });

    addUserToLocalStorage({ user, token, location });
  } catch (error) {
    dispatch({
      type: LOGIN_USER_ERROR,
      payload: { msg: error.response.data.msg },
    });
  }
  clearAlert();
};

reducer.js;

if (action.type === LOGIN_USER_BEGIN) {
  return {
    ...state,
    isLoading: true,
  };
}
if (action.type === LOGIN_USER_SUCCESS) {
  return {
    ...state,
    isLoading: false,
    user: action.payload.user,
    token: action.payload.token,
    userLocation: action.payload.location,
    jobLocation: action.payload.location,
    showAlert: true,
    alertType: 'success',
    alertText: 'Login Successful! Redirecting...',
  };
}
if (action.type === LOGIN_USER_ERROR) {
  return {
    ...state,
    isLoading: false,
    showAlert: true,
    alertType: 'danger',
    alertText: action.payload.msg,
  };
}

Refactor

actions.js;
export const SETUP_USER_BEGIN = 'SETUP_USER_BEGIN';
export const SETUP_USER_SUCCESS = 'SETUP_USER_SUCCESS';
export const SETUP_USER_ERROR = 'SETUP_USER_ERROR';

appContext.js;

const setupUser = async ({ currentUser, endPoint, alertText }) => {
  dispatch({ type: SETUP_USER_BEGIN });
  try {
    const { data } = await axios.post(`/api/v1/auth/${endPoint}`, currentUser);

    const { user, token, location } = data;
    dispatch({
      type: SETUP_USER_SUCCESS,
      payload: { user, token, location, alertText },
    });
    addUserToLocalStorage({ user, token, location });
  } catch (error) {
    dispatch({
      type: SETUP_USER_ERROR,
      payload: { msg: error.response.data.msg },
    });
  }
  clearAlert();
};

reducer.js;
if (action.type === SETUP_USER_BEGIN) {
  return { ...state, isLoading: true };
}
if (action.type === SETUP_USER_SUCCESS) {
  return {
    ...state,
    isLoading: false,
    token: action.payload.token,
    user: action.payload.user,
    userLocation: action.payload.location,
    jobLocation: action.payload.location,
    showAlert: true,
    alertType: 'success',
    alertText: action.payload.alertText,
  };
}
if (action.type === SETUP_USER_ERROR) {
  return {
    ...state,
    isLoading: false,
    showAlert: true,
    alertType: 'danger',
    alertText: action.payload.msg,
  };
}

import/export

Register.js;

const onSubmit = (e) => {
  e.preventDefault();
  const { name, email, password, isMember } = values;
  if (!email || !password || (!isMember && !name)) {
    displayAlert();
    return;
  }
  const currentUser = { name, email, password };
  if (isMember) {
    setupUser({
      currentUser,
      endPoint: 'login',
      alertText: 'Login Successful! Redirecting...',
    });
  } else {
    setupUser({
      currentUser,
      endPoint: 'register',
      alertText: 'User Created! Redirecting...',
    });
  }
};

Nested Pages in React Router 6

Dashboard pages

delete Dashboard.js
fix imports/exports
replace in home route

<Route path='/' element={<div>dashboard</div>} />

create dashboard directory in pages
create AddJob,AllJobs,Profile,Stats,SharedLayout, index.js
setup basic returns

return <h1>Add Job Page</h1>;

export all with index.js (just like components)
import all pages in App.js

Nested Structure

App.js

<Route path='/' >
  <Route path="stats" element={<Stats />} />
  <Route path='all-jobs' element={<AllJobs />}></Route>
  <Route path='add-job' element={<AddJob />}></Route>
  <Route path='profile' element={<Profile />}></Route>
</Route>

Shared Layout

App.js

<Route path='/' element={<SharedLayout/>} >

SharedLayout.js;

import { Outlet, Link } from 'react-router-dom';
import Wrapper from '../../assets/wrappers/SharedLayout';

const SharedLayout = () => {
  return (
    <Wrapper>
      <nav>
        <Link to='all-jobs'>all jobs</Link>
        <Link to='add-job'>all jobs</Link>
      </nav>
      <Outlet />
    </Wrapper>
  );
};

export default SharedLayout;

App.js

<Route index element={<Stats/>} >

Protected Route

create ProtectedRoute.js in pages
import/export
wrap SharedLayout in App.js

<Route
  path='/'
  element={
    <ProtectedRoute>
      <SharedLayout />
    </ProtectedRoute>
  }
/>

ProtectedRoute.js;

import { Navigate } from 'react-router-dom';
import { useAppContext } from '../context/appContext';

const ProtectedRoute = ({ children }) => {
  const { user } = useAppContext();
  if (!user) {
    return <Navigate to='/landing' />;
  }
  return children;
};

Navbar, SmallSidebar, BigSidebar

create Navbar, SmallSidebar, BigSidebar in components
import Wrappers from assets/wrappers
simple return
import/export

SharedLayout.js;

import { Outlet } from 'react-router-dom';
import { Navbar, SmallSidebar, BigSidebar } from '../../components';
import Wrapper from '../../assets/wrappers/SharedLayout';

const SharedLayout = () => {
  const { user } = useAppContext();
  return (
    <>
      <Wrapper>
        <main className='dashboard'>
          <SmallSidebar />
          <BigSidebar />
          <div>
            <Navbar />
            <div className='dashboard-page'>
              <Outlet />
            </div>
          </div>
        </main>
      </Wrapper>
    </>
  );
};

export default SharedLayout;

React Icons

npm install react-icons

Navbar.js

import Wrapper from '../assets/wrappers/Navbar'
import {FaHome} from 'react-icons/fa'
const Navbar = () => {
  return (
    <Wrapper>
      <h4>navbar</h4>
      <FaHome>
    </Wrapper>
  )
}

export default Navbar

Navbar Setup

Navbar.js;

import { useState } from 'react';
import { FaAlignLeft, FaUserCircle, FaCaretDown } from 'react-icons/fa';
import { useAppContext } from '../context/appContext';
import Logo from './Logo';
import Wrapper from '../assets/wrappers/Navbar';
const Navbar = () => {
  return (
    <Wrapper>
      <div className='nav-center'>
        <button
          className='toggle-btn'
          onClick={() => console.log('toggle sidebar')}
        >
          <FaAlignLeft />
        </button>

        <div>
          <Logo />
          <h3 className='logo-text'>dashboard</h3>
        </div>

        <div className='btn-container'>
          <button className='btn' onClick={() => console.log('show logout')}>
            <FaUserCircle />
            john
            <FaCaretDown />
          </button>
          <div className='dropdown show-dropdown'>
            <button
              onClick={() => console.log('logout user')}
              className='dropdown-btn'
            >
              logout
            </button>
          </div>
        </div>
      </div>
    </Wrapper>
  );
};

export default Navbar;

Toggle Sidebar

actions.js;

export const TOGGLE_SIDEBAR = 'TOGGLE_SIDEBAR';

import/export

appContext.js;

const initialState = {
  showSidebar: false,
};

const toggleSidebar = () => {
  dispatch({ type: TOGGLE_SIDEBAR });
};

reducer.js;

if (action.type === TOGGLE_SIDEBAR) {
  return { ...state, showSidebar: !state.showSidebar };
}

Navbar.js;

const { toggleSidebar } = useAppContext();

return (
  <button className='toggle-btn' onClick={toggleSidebar}>
    <FaAlignLeft />
  </button>
);

Toggle Dropdown

Navbar.js

const [showLogout, setShowLogout] = useState(false)

<div className='btn-container'>
  <button className='btn' onClick={() => setShowLogout(!showLogout)}>
    <FaUserCircle />
      {user.name}
    <FaCaretDown />
  </button>
  <div className={showLogout ? 'dropdown show-dropdown' : 'dropdown'}>
    <button onClick={() => logoutUser()} className='dropdown-btn'>
      logout
    </button>
  </div>
</div>

Logout User

actions.js;

export const LOGOUT_USER = 'LOGOUT_USER';

import/export

appContext.js

const logoutUser = () => {
  dispatch({ type: LOGOUT_USER })
  removeUserFromLocalStorage()
}

value={{logoutUser}}

reducer.js;

import { initialState } from './appContext';

if (action.type === LOGOUT_USER) {
  return {
    ...initialState,
    user: null,
    token: null,
    userLocation: '',
    jobLocation: '',
  };
}

Navbar.js;

const { user, logoutUser, toggleSidebar } = useAppContext();

return (
  <div className='btn-container'>
    <button className='btn' onClick={() => setShowLogout(!showLogout)}>
      <FaUserCircle />
      {user.name}
      {user && user.name}
      {user?.name} // optional chaining
      <FaCaretDown />
    </button>
    <div className={showLogout ? 'dropdown show-dropdown' : 'dropdown'}>
      <button onClick={logoutUser} className='dropdown-btn'>
        logout
      </button>
    </div>
  </div>
);

Setup Links

create utilsin the src
setup links.js

import { IoBarChartSharp } from 'react-icons/io5';
import { MdQueryStats } from 'react-icons/md';
import { FaWpforms } from 'react-icons/fa';
import { ImProfile } from 'react-icons/im';

const links = [
  {
    id: 1,
    text: 'stats',
    path: '/',
    icon: <IoBarChartSharp />,
  },
  {
    id: 2,
    text: 'all jobs',
    path: 'all-jobs',
    icon: <MdQueryStats />,
  },
  {
    id: 3,
    text: 'add job',
    path: 'add-job',
    icon: <FaWpforms />,
  },
  {
    id: 4,
    text: 'profile',
    path: 'profile',
    icon: <ImProfile />,
  },
];

export default links;

Small Sidebar - Setup

SmallSidebar.js;

import Wrapper from '../assets/wrappers/SmallSidebar';
import { FaTimes } from 'react-icons/fa';
import { useAppContext } from '../context/appContext';
import links from '../utils/links';
import { NavLink } from 'react-router-dom';
import Logo from './Logo';

export const SmallSidebar = () => {
  return (
    <Wrapper>
      <div className='sidebar-container show-sidebar'>
        <div className='content'>
          <button className='close-btn' onClick={() => console.log('toggle')}>
            <FaTimes />
          </button>
          <header>
            <Logo />
          </header>
          <div className='nav-links'>nav links</div>
        </div>
      </div>
    </Wrapper>
  );
};

export default SmallSidebar;

Small Sidebar - Toggle

SmallSidebar.js;

const { showSidebar, toggleSidebar } = useAppContext();

SmallSidebar.js;

return (
  <div
    className={
      showSidebar ? 'sidebar-container show-sidebar' : 'sidebar-container'
    }
  ></div>
);

SmallSidebar.js;

return (
  <button className='close-btn' onClick={toggleSidebar}>
    <FaTimes />
  </button>
);

Small Sidebar - Nav Links

SmallSidebar.js;

import { NavLink } from 'react-router-dom';

return (
  <div className='nav-links'>
    {links.map((link) => {
      const { text, path, id, icon } = link;

      return (
        <NavLink
          to={path}
          className={({ isActive }) =>
            isActive ? 'nav-link active' : 'nav-link'
          }
          key={id}
          onClick={toggleSidebar}
        >
          <span className='icon'>{icon}</span>
          {text}
        </NavLink>
      );
    })}
  </div>
);

Nav Links Component

in components create NavLinks.js
styles still set from Wrapper
also can setup in links.js, preference

import { NavLink } from 'react-router-dom';
import links from '../utils/links';

const NavLinks = ({ toggleSidebar }) => {
  return (
    <div className='nav-links'>
      {links.map((link) => {
        const { text, path, id, icon } = link;

        return (
          <NavLink
            to={path}
            key={id}
            onClick={toggleSidebar}
            className={({ isActive }) =>
              isActive ? 'nav-link active' : 'nav-link'
            }
          >
            <span className='icon'>{icon}</span>
            {text}
          </NavLink>
        );
      })}
    </div>
  );
};

export default NavLinks;

SmallSidebar.js

import NavLinks from './NavLinks'

return <NavLinks toggleSidebar={toggleSidebar}>

Big Sidebar

import { useAppContext } from '../context/appContext';
import NavLinks from './NavLinks';
import Logo from '../components/Logo';
import Wrapper from '../assets/wrappers/BigSidebar';

const BigSidebar = () => {
  const { showSidebar } = useAppContext();
  return (
    <Wrapper>
      <div
        className={
          showSidebar ? 'sidebar-container ' : 'sidebar-container show-sidebar'
        }
      >
        <div className='content'>
          <header>
            <Logo />
          </header>
          <NavLinks />
        </div>
      </div>
    </Wrapper>
  );
};

export default BigSidebar;

REACT ROUTER UPDATE !!!

Stack Overflow

<NavLink
to={path}
key={id}
onClick={toggleSidebar}
className={({ isActive }) =>
isActive ? 'nav-link active' : 'nav-link'}


end
>

Authenticate User Setup

create auth.js in middleware

const auth = async (req, res, next) => {
  console.log('authenticate user');
  next();
};

export default auth;

authRoutes.js;

import authenticateUser from '../middleware/auth.js';

router.route('/updateUser').patch(authenticateUser, updateUser);

two options

server.js;

import authenticateUser from './middleware/auth.js';
app.use('/api/v1/jobs', authenticateUser, jobsRouter);

jobsRoutes.js;

import authenticateUser from './middleware/auth.js';

// all routes !!!!

router.route('/stats').get(authenticateUser, showStats);

Auth - Bearer Schema

Postman

Headers

Authorization: Bearer <token>

auth.js;

const auth = async (req, res, next) => {
  const headers = req.headers;
  const authHeader = req.headers.authorization;
  console.log(headers);
  console.log(authHeader);
  next();
};

Postman - Set Token Programmatically

register and login routes
Tests

const jsonData = pm.response.json();
pm.globals.set('token', jsonData.token);

Type: Bearer;

Token: {
  {
    token;
  }
}

Unauthenticated Error

auth.js;

import { UnAuthenticatedError } from '../errors/index.js';

const auth = async (req, res, next) => {
  const authHeader = req.headers.authorization;

  if (!authHeader) {
    // why, well is it 400 or 404?
    // actually 401
    throw new UnAuthenticatedError('Authentication Invalid');
  }

  next();
};

Auth Middleware

import jwt from 'jsonwebtoken';
import { UnAuthenticatedError } from '../errors/index.js';

const auth = async (req, res, next) => {
  // check header
  const authHeader = req.headers.authorization;
  if (!authHeader || !authHeader.startsWith('Bearer')) {
    throw new UnauthenticatedError('Authentication invalid');
  }
  const token = authHeader.split(' ')[1];

  try {
    const payload = jwt.verify(token, process.env.JWT_SECRET);
    // console.log(payload)
    // attach the user request object
    // req.user = payload
    req.user = { userId: payload.userId };
    next();
  } catch (error) {
    throw new UnauthenticatedError('Authentication invalid');
  }
};

export default auth;

Update User

const updateUser = async (req, res) => {
  const { email, name, lastName, location } = req.body;
  if (!email || !name || !lastName || !location) {
    throw new BadRequestError('Please provide all values');
  }

  const user = await User.findOne({ _id: req.user.userId });

  user.email = email;
  user.name = name;
  user.lastName = lastName;
  user.location = location;

  await user.save();

  // various setups
  // in this case only id
  // if other properties included, must re-generate

  const token = user.createJWT();
  res.status(StatusCodes.OK).json({
    user,
    token,
    location: user.location,
  });
};

Modified Paths

user.save() vs User.findOneAndUpdate

User.js;

UserSchema.pre('save', async function () {
  console.log(this.modifiedPaths());
  console.log(this.isModified('name'));

  // if (!this.isModified('password')) return
  // const salt = await bcrypt.genSalt(10)
  // this.password = await bcrypt.hash(this.password, salt)
});

Profile Page

appContext.js

const updateUser = async (currentUser) => {
  console.log(currentUser)
}

value={{updateUser}}

Profile.js;

import { useState } from 'react';
import { FormRow, Alert } from '../../components';
import { useAppContext } from '../../context/appContext';
import Wrapper from '../../assets/wrappers/DashboardFormPage';

const Profile = () => {
  const { user, showAlert, displayAlert, updateUser, isLoading } =
    useAppContext();
  const [name, setName] = useState(user?.name);
  const [email, setEmail] = useState(user?.email);
  const [lastName, setLastName] = useState(user?.lastName);
  const [location, setLocation] = useState(user?.location);

  const handleSubmit = (e) => {
    e.preventDefault();
    if (!name || !email || !lastName || !location) {
      // test and remove temporary
      displayAlert();
      return;
    }

    updateUser({ name, email, lastName, location });
  };
  return (
    <Wrapper>
      <form className='form' onSubmit={handleSubmit}>
        <h3>profile </h3>
        {showAlert && <Alert />}

        {/* name */}
        <div className='form-center'>
          <FormRow
            type='text'
            name='name'
            value={name}
            handleChange={(e) => setName(e.target.value)}
          />
          <FormRow
            labelText='last name'
            type='text'
            name='lastName'
            value={lastName}
            handleChange={(e) => setLastName(e.target.value)}
          />
          <FormRow
            type='email'
            name='email'
            value={email}
            handleChange={(e) => setEmail(e.target.value)}
          />

          <FormRow
            type='text'
            name='location'
            value={location}
            handleChange={(e) => setLocation(e.target.value)}
          />
          <button className='btn btn-block' type='submit' disabled={isLoading}>
            {isLoading ? 'Please Wait...' : 'save changes'}
          </button>
        </div>
      </form>
    </Wrapper>
  );
};

export default Profile;

Bearer Token - Manual Approach

appContext.js;

const updaterUser = async (currentUser) => {
  try {
    const { data } = await axios.patch('/api/v1/auth/updateUser', currentUser, {
      headers: {
        Authorization: `Bearer ${state.token}`,
      },
    });
    console.log(data);
  } catch (error) {
    console.log(error.response);
  }
};

Axios - Global Setup

In current axios version, common property returns undefined, so we don't use it anymore!!!

appContext.js;

axios.defaults.headers['Authorization'] = `Bearer ${state.token}`;

Axios - Setup Instance

AppContext.js;

const authFetch = axios.create({
  baseURL: '/api/v1',
  headers: {
    Authorization: `Bearer ${state.token}`,
  },
});

const updaterUser = async (currentUser) => {
  try {
    const { data } = await authFetch.patch('/auth/updateUser', currentUser);
  } catch (error) {
    console.log(error.response);
  }
};

Axios - Interceptors

will use instance, but can use axios instead

In current axios version, common property returns undefined, so we don't use it anymore!!!

appContext.js;

// response interceptor
authFetch.interceptors.request.use(
  (config) => {
    config.headers['Authorization'] = `Bearer ${state.token}`;
    return config;
  },
  (error) => {
    return Promise.reject(error);
  }
);
// response interceptor
authFetch.interceptors.response.use(
  (response) => {
    return response;
  },
  (error) => {
    console.log(error.response);
    if (error.response.status === 401) {
      console.log('AUTH ERROR');
    }
    return Promise.reject(error);
  }
);

Update User

actions.js;
export const UPDATE_USER_BEGIN = 'UPDATE_USER_BEGIN';
export const UPDATE_USER_SUCCESS = 'UPDATE_USER_SUCCESS';
export const UPDATE_USER_ERROR = 'UPDATE_USER_ERROR';

appContext.js;

const updateUser = async (currentUser) => {
  dispatch({ type: UPDATE_USER_BEGIN });
  try {
    const { data } = await authFetch.patch('/auth/updateUser', currentUser);

    // no token
    const { user, location, token } = data;

    dispatch({
      type: UPDATE_USER_SUCCESS,
      payload: { user, location, token },
    });

    addUserToLocalStorage({ user, location, token });
  } catch (error) {
    dispatch({
      type: UPDATE_USER_ERROR,
      payload: { msg: error.response.data.msg },
    });
  }
  clearAlert();
};

reducer.js
if (action.type === UPDATE_USER_BEGIN) {
  return { ...state, isLoading: true }
}

if (action.type === UPDATE_USER_SUCCESS) {
  return {
    ...state,
    isLoading: false,
    token:action.payload.token
    user: action.payload.user,
    userLocation: action.payload.location,
    jobLocation: action.payload.location,
    showAlert: true,
    alertType: 'success',
    alertText: 'User Profile Updated!',
  }
}
if (action.type === UPDATE_USER_ERROR) {
  return {
    ...state,
    isLoading: false,
    showAlert: true,
    alertType: 'danger',
    alertText: action.payload.msg,
  }
}

401 Error - Logout User

appContext.js;
// response interceptor
authFetch.interceptors.response.use(
  (response) => {
    return response;
  },
  (error) => {
    if (error.response.status === 401) {
      logoutUser();
    }
    return Promise.reject(error);
  }
);

const updateUser = async (currentUser) => {
  dispatch({ type: UPDATE_USER_BEGIN });
  try {
    const { data } = await authFetch.patch('/auth/updateUser', currentUser);

    // no token
    const { user, location } = data;

    dispatch({
      type: UPDATE_USER_SUCCESS,
      payload: { user, location, token },
    });

    addUserToLocalStorage({ user, location, token: initialState.token });
  } catch (error) {
    if (error.response.status !== 401) {
      dispatch({
        type: UPDATE_USER_ERROR,
        payload: { msg: error.response.data.msg },
      });
    }
  }
  clearAlert();
};

Job Model

Job Model

Job.js;

import mongoose from 'mongoose';

const JobSchema = new mongoose.Schema(
  {
    company: {
      type: String,
      required: [true, 'Please provide company name'],
      maxlength: 50,
    },
    position: {
      type: String,
      required: [true, 'Please provide position'],
      maxlength: 100,
    },
    status: {
      type: String,
      enum: ['interview', 'declined', 'pending'],
      default: 'pending',
    },

    jobType: {
      type: String,
      enum: ['full-time', 'part-time', 'remote', 'internship'],
      default: 'full-time',
    },
    jobLocation: {
      type: String,
      default: 'my city',
      required: true,
    },
    createdBy: {
      type: mongoose.Types.ObjectId,
      ref: 'User',
      required: [true, 'Please provide user'],
    },
  },
  { timestamps: true }
);

export default mongoose.model('Job', JobSchema);

Create Job

jobsController.js;

import Job from '../models/Job.js';
import { StatusCodes } from 'http-status-codes';
import { BadRequestError, NotFoundError } from '../errors/index.js';

const createJob = async (req, res) => {
  const { position, company } = req.body;

  if (!position || !company) {
    throw new BadRequestError('Please Provide All Values');
  }

  req.body.createdBy = req.user.userId;

  const job = await Job.create(req.body);
  res.status(StatusCodes.CREATED).json({ job });
};

Job State Values

appContext.js;
const initialState = {
  isEditing: false,
  editJobId: '',
  position: '',
  company: '',
  // jobLocation
  jobTypeOptions: ['full-time', 'part-time', 'remote', 'internship'],
  jobType: 'full-time',
  statusOptions: ['pending', 'interview', 'declined'],
  status: 'pending',
};

AddJob Page - Setup

import { FormRow, Alert } from '../../components';
import { useAppContext } from '../../context/appContext';
import Wrapper from '../../assets/wrappers/DashboardFormPage';
const AddJob = () => {
  const {
    isEditing,
    showAlert,
    displayAlert,
    position,
    company,
    jobLocation,
    jobType,
    jobTypeOptions,
    status,
    statusOptions,
  } = useAppContext();

  const handleSubmit = (e) => {
    e.preventDefault();

    if (!position || !company || !jobLocation) {
      displayAlert();
      return;
    }
    console.log('create job');
  };

  const handleJobInput = (e) => {
    const name = e.target.name;
    const value = e.target.value;
    console.log(`${name}:${value}`);
  };

  return (
    <Wrapper>
      <form className='form'>
        <h3>{isEditing ? 'edit job' : 'add job'} </h3>
        {showAlert && <Alert />}

        {/* position */}
        <div className='form-center'>
          <FormRow
            type='text'
            name='position'
            value={position}
            handleChange={handleJobInput}
          />
          {/* company */}
          <FormRow
            type='text'
            name='company'
            value={company}
            handleChange={handleJobInput}
          />
          {/* location */}
          <FormRow
            type='text'
            labelText='location'
            name='jobLocation'
            value={jobLocation}
            handleChange={handleJobInput}
          />
          {/* job type */}

          {/* job status */}

          <div className='btn-container'>
            <button
              className='btn btn-block submit-btn'
              type='submit'
              onClick={handleSubmit}
            >
              submit
            </button>
          </div>
        </div>
      </form>
    </Wrapper>
  );
};

export default AddJob;

Select Input

return (
  // job type
  <div className='form-row'>
    <label htmlFor='jobType' className='form-label'>
      job type
    </label>

    <select
      name='jobType'
      value={jobType}
      onChange={handleJobInput}
      className='form-select'
    >
      {jobTypeOptions.map((itemValue, index) => {
        return (
          <option key={index} value={itemValue}>
            {itemValue}
          </option>
        );
      })}
    </select>
  </div>
);

FormRowSelect

create FormRowSelect in components
setup import/export

const FormRowSelect = ({ labelText, name, value, handleChange, list }) => {
  return (
    <div className='form-row'>
      <label htmlFor={name} className='form-label'>
        {labelText || name}
      </label>

      <select
        name={name}
        value={value}
        onChange={handleChange}
        className='form-select'
      >
        {list.map((itemValue, index) => {
          return (
            <option key={index} value={itemValue}>
              {itemValue}
            </option>
          );
        })}
      </select>
    </div>
  );
};

export default FormRowSelect;

AddJob.js;

return (
  <>
    {/* job status */}

    <FormRowSelect
      name='status'
      value={status}
      handleChange={handleJobInput}
      list={statusOptions}
    />

    {/* job type */}
    <FormRowSelect
      labelText='type'
      name='jobType'
      value={jobType}
      handleChange={handleJobInput}
      list={jobTypeOptions}
    />
  </>
);

Change State Values With Handle Change

JS Nuggets Dynamic Object Keys

actions.js;

export const HANDLE_CHANGE = 'HANDLE_CHANGE';

appContext.js

const handleChange = ({ name, value }) => {
  dispatch({
    type: HANDLE_CHANGE,
    payload: { name, value },
  })
}

value={{handleChange}}

reducer.js;

if (action.type === HANDLE_CHANGE) {
  return { ...state, [action.payload.name]: action.payload.value };
}

AddJob.js;

const { handleChange } = useAppContext();

const handleJobInput = (e) => {
  handleChange({ name: e.target.name, value: e.target.value });
};

Clear Values

actions.js;

export const CLEAR_VALUES = 'CLEAR_VALUES';

appContext.js

const clearValues = () => {
    dispatch({ type: CLEAR_VALUES })
  }

value={{clearValues}}

reducer.js;

if (action.type === CLEAR_VALUES) {
  const initialState = {
    isEditing: false,
    editJobId: '',
    position: '',
    company: '',
    jobLocation: state.userLocation,
    jobType: 'full-time',
    status: 'pending',
  };
  return { ...state, ...initialState };
}

AddJob.js;

const { clearValues } = useAppContext();

return (
  <div className='btn-container'>
    {/* submit button */}

    <button
      className='btn btn-block clear-btn'
      onClick={(e) => {
        e.preventDefault();
        clearValues();
      }}
    >
      clear
    </button>
  </div>
);

Create Job

actions.js;

export const CREATE_JOB_BEGIN = 'CREATE_JOB_BEGIN';
export const CREATE_JOB_SUCCESS = 'CREATE_JOB_SUCCESS';
export const CREATE_JOB_ERROR = 'CREATE_JOB_ERROR';

appContext.js;

const createJob = async () => {
  dispatch({ type: CREATE_JOB_BEGIN });
  try {
    const { position, company, jobLocation, jobType, status } = state;

    await authFetch.post('/jobs', {
      company,
      position,
      jobLocation,
      jobType,
      status,
    });
    dispatch({
      type: CREATE_JOB_SUCCESS,
    });
    // call function instead clearValues()
    dispatch({ type: CLEAR_VALUES });
  } catch (error) {
    if (error.response.status === 401) return;
    dispatch({
      type: CREATE_JOB_ERROR,
      payload: { msg: error.response.data.msg },
    });
  }
  clearAlert();
};

AddJob.js;

const { createJob } = useAppContext();

const handleSubmit = (e) => {
  e.preventDefault();
  // while testing

  // if (!position || !company || !jobLocation) {
  //   displayAlert()
  //   return
  // }
  if (isEditing) {
    // eventually editJob()
    return;
  }
  createJob();
};

reducer.js;

if (action.type === CREATE_JOB_BEGIN) {
  return { ...state, isLoading: true };
}
if (action.type === CREATE_JOB_SUCCESS) {
  return {
    ...state,
    isLoading: false,
    showAlert: true,
    alertType: 'success',
    alertText: 'New Job Created!',
  };
}
if (action.type === CREATE_JOB_ERROR) {
  return {
    ...state,
    isLoading: false,
    showAlert: true,
    alertType: 'danger',
    alertText: action.payload.msg,
  };
}

Get All Jobs

jobsController.js;

const getAllJobs = async (req, res) => {
  const jobs = await Job.find({ createdBy: req.user.userId });

  res
    .status(StatusCodes.OK)
    .json({ jobs, totalJobs: jobs.length, numOfPages: 1 });
};

Jobs State Values

appContext.js;

const initialState = {
  jobs: [],
  totalJobs: 0,
  numOfPages: 1,
  page: 1,
};

Get All Jobs Request

actions.js;
export const GET_JOBS_BEGIN = 'GET_JOBS_BEGIN';
export const GET_JOBS_SUCCESS = 'GET_JOBS_SUCCESS';

appContext.js

import React, { useReducer, useContext, useEffect } from 'react'

const getJobs = async () => {
  let url = `/jobs`

  dispatch({ type: GET_JOBS_BEGIN })
  try {
    const { data } = await authFetch(url)
    const { jobs, totalJobs, numOfPages } = data
    dispatch({
      type: GET_JOBS_SUCCESS,
      payload: {
        jobs,
        totalJobs,
        numOfPages,
      },
    })
  } catch (error) {
    console.log(error.response)
    logoutUser()
  }
  clearAlert()
}

useEffect(() => {
  getJobs()
}, [])

value={{getJobs}}

reducer.js;

if (action.type === GET_JOBS_BEGIN) {
  return { ...state, isLoading: true, showAlert: false };
}
if (action.type === GET_JOBS_SUCCESS) {
  return {
    ...state,
    isLoading: false,
    jobs: action.payload.jobs,
    totalJobs: action.payload.totalJobs,
    numOfPages: action.payload.numOfPages,
  };
}

AllJobs Page Setup

create
SearchContainer export
JobsContainer export
Job
JobInfo

AllJobs.js;

import { JobsContainer, SearchContainer } from '../../components';
const AllJobs = () => {
  return (
    <>
      <SearchContainer />
      <JobsContainer />
    </>
  );
};

export default AllJobs;

JobsContainer.js;
import { useAppContext } from '../context/appContext';
import { useEffect } from 'react';
import Loading from './Loading';
import Job from './Job';
import Wrapper from '../assets/wrappers/JobsContainer';

const JobsContainer = () => {
  const { getJobs, jobs, isLoading, page, totalJobs } = useAppContext();
  useEffect(() => {
    getJobs();
  }, []);

  if (isLoading) {
    return <Loading center />;
  }
  if (jobs.length === 0) {
    return (
      <Wrapper>
        <h2>No jobs to display...</h2>
      </Wrapper>
    );
  }
  return (
    <Wrapper>
      <h5>
        {totalJobs} job{jobs.length > 1 && 's'} found
      </h5>
      <div className='jobs'>
        {jobs.map((job) => {
          return <Job key={job._id} {...job} />;
        })}
      </div>
    </Wrapper>
  );
};

export default JobsContainer;

Job.js;

import moment from 'moment';

const Job = ({ company }) => {
  return <h5>{company}</h5>;
};

export default Job;

Moment.js

Format Dates
moment.js
stop server
cd client

npm install moment

Job.js;

import moment from 'moment';

const Job = ({ company, createdAt }) => {
  let date = moment(createdAt);
  date = date.format('MMM Do, YYYY');
  return (
    <div>
      <h5>{company}</h5>
      <h5>{date}</h5>
    </div>
  );
};

export default Job;

Job Component - Setup

appContext.js

const setEditJob = (id) => {
  console.log(`set edit job : ${id}`)
}
const deleteJob = (id) =>{
  console.log(`delete : ${id}`)
}
value={{setEditJob,deleteJob}}

Job.js;

import { FaLocationArrow, FaBriefcase, FaCalendarAlt } from 'react-icons/fa';
import { Link } from 'react-router-dom';
import { useAppContext } from '../context/appContext';
import Wrapper from '../assets/wrappers/Job';
import JobInfo from './JobInfo';

const Job = ({
  _id,
  position,
  company,
  jobLocation,
  jobType,
  createdAt,
  status,
}) => {
  const { setEditJob, deleteJob } = useAppContext();

  let date = moment(createdAt);
  date = date.format('MMM Do, YYYY');

  return (
    <Wrapper>
      <header>
        <div className='main-icon'>{company.charAt(0)}</div>
        <div className='info'>
          <h5>{position}</h5>
          <p>{company}</p>
        </div>
      </header>
      <div className='content'>
        {/* content center later */}
        <footer>
          <div className='actions'>
            <Link
              to='/add-job'
              onClick={() => setEditJob(_id)}
              className='btn edit-btn'
            >
              Edit
            </Link>
            <button
              type='button'
              className='btn delete-btn'
              onClick={() => deleteJob(_id)}
            >
              Delete
            </button>
          </div>
        </footer>
      </div>
    </Wrapper>
  );
};

export default Job;

JobInfo

JobInfo.js;

import Wrapper from '../assets/wrappers/JobInfo';

const JobInfo = ({ icon, text }) => {
  return (
    <Wrapper>
      <span className='icon'>{icon}</span>
      <span className='text'>{text}</span>
    </Wrapper>
  );
};

export default JobInfo;

Job.js;
return (
  <div className='content'>
    <div className='content-center'>
      <JobInfo icon={<FaLocationArrow />} text={jobLocation} />
      <JobInfo icon={<FaCalendarAlt />} text={date} />
      <JobInfo icon={<FaBriefcase />} text={jobType} />
      <div className={`status ${status}`}>{status}</div>
    </div>
    {/* footer content */}
  </div>
);

SetEditJob

actions.js;
export const SET_EDIT_JOB = 'SET_EDIT_JOB';

appContext.js

const setEditJob = (id) => {
  dispatch({ type: SET_EDIT_JOB, payload: { id } })
}
const editJob = () => {
  console.log('edit job')
}
value={{editJob}}

reducer.js;

if (action.type === SET_EDIT_JOB) {
  const job = state.jobs.find((job) => job._id === action.payload.id);
  const { _id, position, company, jobLocation, jobType, status } = job;
  return {
    ...state,
    isEditing: true,
    editJobId: _id,
    position,
    company,
    jobLocation,
    jobType,
    status,
  };
}

AddJob.js;
const { isEditing, editJob } = useAppContext();
const handleSubmit = (e) => {
  e.preventDefault();

  if (!position || !company || !jobLocation) {
    displayAlert();
    return;
  }
  if (isEditing) {
    editJob();
    return;
  }
  createJob();
};

Edit Job - Server

jobsController.js;

const updateJob = async (req, res) => {
  const { id: jobId } = req.params;

  const { company, position } = req.body;

  if (!company || !position) {
    throw new BadRequestError('Please Provide All Values');
  }

  const job = await Job.findOne({ _id: jobId });

  if (!job) {
    throw new NotFoundError(`No job with id ${jobId}`);
  }

  // check permissions

  const updatedJob = await Job.findOneAndUpdate({ _id: jobId }, req.body, {
    new: true,
    runValidators: true,
  });

  res.status(StatusCodes.OK).json({ updatedJob });
};

Alternative Approach

optional
multiple approaches
different setups
course Q&A

jobsController.js;
const updateJob = async (req, res) => {
  const { id: jobId } = req.params;
  const { company, position, jobLocation } = req.body;

  if (!position || !company) {
    throw new BadRequestError('Please provide all values');
  }
  const job = await Job.findOne({ _id: jobId });

  if (!job) {
    throw new NotFoundError(`No job with id :${jobId}`);
  }

  // check permissions

  // alternative approach

  job.position = position;
  job.company = company;
  job.jobLocation = jobLocation;

  await job.save();
  res.status(StatusCodes.OK).json({ job });
};

Check Permissions

jobsController.js;

const updateJob = async (req, res) => {
  const { id: jobId } = req.params;
  const { company, position, status } = req.body;

  if (!position || !company) {
    throw new BadRequestError('Please provide all values');
  }
  const job = await Job.findOne({ _id: jobId });

  if (!job) {
    throw new NotFoundError(`No job with id :${jobId}`);
  }

  // check permissions
  // req.user.userId (string) === job.createdBy(object)
  // throw new UnAuthenticatedError('Not authorized to access this route')

  // console.log(typeof req.user.userId)
  // console.log(typeof job.createdBy)

  checkPermissions(req.user, job.createdBy);

  const updatedJob = await Job.findOneAndUpdate({ _id: jobId }, req.body, {
    new: true,
    runValidators: true,
  });

  res.status(StatusCodes.OK).json({ updatedJob });
};

utils folder
checkPermissions.js
import in jobsController.js

checkPermissions.js;

import { UnAuthenticatedError } from '../errors/index.js';

const checkPermissions = (requestUser, resourceUserId) => {
  // if (requestUser.role === 'admin') return
  if (requestUser.userId === resourceUserId.toString()) return;
  throw new UnauthorizedError('Not authorized to access this route');
};

export default checkPermissions;

Remove/Delete Job

jobsController.js;

const deleteJob = async (req, res) => {
  const { id: jobId } = req.params;

  const job = await Job.findOne({ _id: jobId });

  if (!job) {
    throw new NotFoundError(`No job with id : ${jobId}`);
  }

  checkPermissions(req.user, job.createdBy);

  await job.remove();
  res.status(StatusCodes.OK).json({ msg: 'Success! Job removed' });
};

Delete Job - Front-End

actions.js;

export const DELETE_JOB_BEGIN = 'DELETE_JOB_BEGIN';

appContext.js;

const deleteJob = async (jobId) => {
  dispatch({ type: DELETE_JOB_BEGIN });
  try {
    await authFetch.delete(`/jobs/${jobId}`);
    getJobs();
  } catch (error) {
    logoutUser();
  }
};

reducer.js;

if (action.type === DELETE_JOB_BEGIN) {
  return { ...state, isLoading: true };
}

Edit Job - Front-End

actions.js;
export const EDIT_JOB_BEGIN = 'EDIT_JOB_BEGIN';
export const EDIT_JOB_SUCCESS = 'EDIT_JOB_SUCCESS';
export const EDIT_JOB_ERROR = 'EDIT_JOB_ERROR';

appContext.js;
const editJob = async () => {
  dispatch({ type: EDIT_JOB_BEGIN });
  try {
    const { position, company, jobLocation, jobType, status } = state;

    await authFetch.patch(`/jobs/${state.editJobId}`, {
      company,
      position,
      jobLocation,
      jobType,
      status,
    });
    dispatch({
      type: EDIT_JOB_SUCCESS,
    });
    dispatch({ type: CLEAR_VALUES });
  } catch (error) {
    if (error.response.status === 401) return;
    dispatch({
      type: EDIT_JOB_ERROR,
      payload: { msg: error.response.data.msg },
    });
  }
  clearAlert();
};

reducer.js;

if (action.type === EDIT_JOB_BEGIN) {
  return { ...state, isLoading: true };
}
if (action.type === EDIT_JOB_SUCCESS) {
  return {
    ...state,
    isLoading: false,
    showAlert: true,
    alertType: 'success',
    alertText: 'Job Updated!',
  };
}
if (action.type === EDIT_JOB_ERROR) {
  return {
    ...state,
    isLoading: false,
    showAlert: true,
    alertType: 'danger',
    alertText: action.payload.msg,
  };
}

Create More Jobs

Mockaroo
setup mock-data.json in the root

Populate Database

create populate.js in the root

populate.js;

import { readFile } from 'fs/promises';

import dotenv from 'dotenv';
dotenv.config();

import connectDB from './db/connect.js';
import Job from './models/Job.js';

const start = async () => {
  try {
    await connectDB(process.env.MONGO_URL);
    await Job.deleteMany();

    const jsonProducts = JSON.parse(
      await readFile(new URL('./mock-data.json', import.meta.url))
    );
    await Job.create(jsonProducts);
    console.log('Success!!!!');
    process.exit(0);
  } catch (error) {
    console.log(error);
    process.exit(1);
  }
};

start();

Show Stats - Structure

aggregation pipeline
step by step
Aggregation Pipeline

jobsController.js;

import mongoose from 'mongoose';

const showStats = async (req, res) => {
  let stats = await Job.aggregate([
    { $match: { createdBy: mongoose.Types.ObjectId(req.user.userId) } },
    { $group: { _id: '$status', count: { $sum: 1 } } },
  ]);

  res.status(StatusCodes.OK).json({ stats });
};

Show Stats - Object Setup

jobsController.js;

const showStats = async (req, res) => {
  let stats = await Job.aggregate([
    { $match: { createdBy: mongoose.Types.ObjectId(req.user.userId) } },
    { $group: { _id: '$status', count: { $sum: 1 } } },
  ]);

  stats = stats.reduce((acc, curr) => {
    const { _id: title, count } = curr;
    acc[title] = count;
    return acc;
  }, {});

  res.status(StatusCodes.OK).json({ stats });
};

Show Stats - Default Stats

jobsController.js;

const showStats = async (req, res) => {
  let stats = await Job.aggregate([
    { $match: { createdBy: mongoose.Types.ObjectId(req.user.userId) } },
    { $group: { _id: '$status', count: { $sum: 1 } } },
  ]);
  stats = stats.reduce((acc, curr) => {
    const { _id: title, count } = curr;
    acc[title] = count;
    return acc;
  }, {});

  const defaultStats = {
    pending: stats.pending || 0,
    interview: stats.interview || 0,
    declined: stats.declined || 0,
  };
  let monthlyApplications = [];
  res.status(StatusCodes.OK).json({ defaultStats, monthlyApplications });
};

Show Stats - Function Setup

actions.js;

export const SHOW_STATS_BEGIN = 'SHOW_STATS_BEGIN';
export const SHOW_STATS_SUCCESS = 'SHOW_STATS_SUCCESS';

appContext.js

const initialState = {
  stats: {},
  monthlyApplications: []

}

const showStats = async () => {
    dispatch({ type: SHOW_STATS_BEGIN })
    try {
      const { data } = await authFetch('/jobs/stats')
      dispatch({
        type: SHOW_STATS_SUCCESS,
        payload: {
          stats: data.defaultStats,
          monthlyApplications: data.monthlyApplications,
        },
      })
    } catch (error) {
console.log(error.response)
      // logoutUser()
    }

clearAlert()
  }
  value={{showStats}}

reducers.js;
if (action.type === SHOW_STATS_BEGIN) {
  return { ...state, isLoading: true, showAlert: false };
}
if (action.type === SHOW_STATS_SUCCESS) {
  return {
    ...state,
    isLoading: false,
    stats: action.payload.stats,
    monthlyApplications: action.payload.monthlyApplications,
  };
}

Stats Page - Structure

components
StatsContainer.js
ChartsContainer.js
StatsItem.js
simple return
import/export index.js

Stats.js;

import { useEffect } from 'react';
import { useAppContext } from '../../context/appContext';
import { StatsContainer, Loading, ChartsContainer } from '../../components';

const Stats = () => {
  const { showStats, isLoading, monthlyApplications } = useAppContext();
  useEffect(() => {
    showStats();
  }, []);

  if (isLoading) {
    return <Loading center />;
  }

  return (
    <>
      <StatsContainer />
      {monthlyApplications.length > 0 && <ChartsContainer />}
    </>
  );
};

export default Stats;

StatsContainer

StatsContainer.js;

import { useAppContext } from '../context/appContext';
import StatItem from './StatItem';
import { FaSuitcaseRolling, FaCalendarCheck, FaBug } from 'react-icons/fa';
import Wrapper from '../assets/wrappers/StatsContainer';
const StatsContainer = () => {
  const { stats } = useAppContext();
  const defaultStats = [
    {
      title: 'pending applications',
      count: stats.pending || 0,
      icon: <FaSuitcaseRolling />,
      color: '#e9b949',
      bcg: '#fcefc7',
    },
    {
      title: 'interviews scheduled',
      count: stats.interview || 0,
      icon: <FaCalendarCheck />,
      color: '#647acb',
      bcg: '#e0e8f9',
    },
    {
      title: 'jobs declined',
      count: stats.declined || 0,
      icon: <FaBug />,
      color: '#d66a6a',
      bcg: '#ffeeee',
    },
  ];

  return (
    <Wrapper>
      {defaultStats.map((item, index) => {
        return <StatItem key={index} {...item} />;
      })}
    </Wrapper>
  );
};

export default StatsContainer;

StatItem

StatItem.js;

import Wrapper from '../assets/wrappers/StatItem';

function StatItem({ count, title, icon, color, bcg }) {
  return (
    <Wrapper color={color} bcg={bcg}>
      <header>
        <span className='count'>{count}</span>
        <div className='icon'>{icon}</div>
      </header>
      <h5 className='title'>{title}</h5>
    </Wrapper>
  );
}

export default StatItem;

Aggregate Jobs Based on Year and Month

jobsController.js;

let monthlyApplications = await Job.aggregate([
  { $match: { createdBy: mongoose.Types.ObjectId(req.user.userId) } },
  {
    $group: {
      _id: {
        year: {
          $year: '$createdAt',
        },
        month: {
          $month: '$createdAt',
        },
      },
      count: { $sum: 1 },
    },
  },
  { $sort: { '_id.year': -1, '_id.month': -1 } },
  { $limit: 6 },
]);

Refactor Data

install moment.js on the SERVER

npm install moment

jobsController.js;

import moment from 'moment';

monthlyApplications = monthlyApplications
  .map((item) => {
    const {
      _id: { year, month },
      count,
    } = item;
    // accepts 0-11
    const date = moment()
      .month(month - 1)
      .year(year)
      .format('MMM Y');
    return { date, count };
  })
  .reverse();

Charts Container

BarChart.js
AreaChart.js

ChartsContainer.js;
import React, { useState } from 'react';

import BarChart from './BarChart';
import AreaChart from './AreaChart';
import { useAppContext } from '../context/appContext';
import Wrapper from '../assets/wrappers/ChartsContainer';

export default function ChartsContainer() {
  const [barChart, setBarChart] = useState(true);
  const { monthlyApplications: data } = useAppContext();

  return (
    <Wrapper>
      <h4>Monthly Applications</h4>

      <button type='button' onClick={() => setBarChart(!barChart)}>
        {barChart ? 'AreaChart' : 'BarChart'}
      </button>
      {barChart ? <BarChart data={data} /> : <AreaChart data={data} />}
    </Wrapper>
  );
}

Recharts Library

install in the Client!!!

Recharts

npm install recharts

Bar Chart

BarChart.js;

import {
  BarChart,
  Bar,
  XAxis,
  YAxis,
  CartesianGrid,
  Tooltip,
  ResponsiveContainer,
} from 'recharts';

const BarChartComponent = ({ data }) => {
  return (
    <ResponsiveContainer width='100%' height={300}>
      <BarChart
        data={data}
        margin={{
          top: 50,
        }}
      >
        <CartesianGrid strokeDasharray='3 3' />
        <XAxis dataKey='date' />
        <YAxis allowDecimals={false} />
        <Tooltip />
        <Bar dataKey='count' fill='#2cb1bc' barSize={75} />
      </BarChart>
    </ResponsiveContainer>
  );
};

Area Chart

import {
  ResponsiveContainer,
  AreaChart,
  Area,
  XAxis,
  YAxis,
  CartesianGrid,
  Tooltip,
} from 'recharts';

const AreaChartComponent = ({ data }) => {
  return (
    <ResponsiveContainer width='100%' height={300}>
      <AreaChart
        data={data}
        margin={{
          top: 50,
        }}
      >
        <CartesianGrid strokeDasharray='3 3' />
        <XAxis dataKey='date' />
        <YAxis allowDecimals={false} />
        <Tooltip />
        <Area type='monotone' dataKey='count' stroke='#2cb1bc' fill='#bef8fd' />
      </AreaChart>
    </ResponsiveContainer>
  );
};

Filter

Get All Jobs - Initial Setup

jobsController.js;

const getAllJobs = async (req, res) => {
  const { search, status, jobType, sort } = req.query;

  const queryObject = {
    createdBy: req.user.userId,
  };

  // NO AWAIT
  let result = Job.find(queryObject);

  // chain sort conditions

  const jobs = await result;

  res
    .status(StatusCodes.OK)
    .json({ jobs, totalJobs: jobs.length, numOfPages: 1 });
};

Status

jobsController.js;

const getAllJobs = async (req, res) => {
  const { search, status, jobType, sort } = req.query;

  const queryObject = {
    createdBy: req.user.userId,
  };

  if (status !== 'all') {
    queryObject.status = status;
  }

  // NO AWAIT
  let result = Job.find(queryObject);

  // chain sort conditions

  const jobs = await result;

  res
    .status(StatusCodes.OK)
    .json({ jobs, totalJobs: jobs.length, numOfPages: 1 });
};

JobType

jobsController.js;

const getAllJobs = async (req, res) => {
  const { search, status, jobType, sort } = req.query;

  const queryObject = {
    createdBy: req.user.userId,
  };

  if (status !== 'all') {
    queryObject.status = status;
  }
  if (jobType !== 'all') {
    queryObject.jobType = jobType;
  }
  // NO AWAIT
  let result = Job.find(queryObject);

  // chain sort conditions

  const jobs = await result;

  res
    .status(StatusCodes.OK)
    .json({ jobs, totalJobs: jobs.length, numOfPages: 1 });
};

Search

jobsController.js;

const getAllJobs = async (req, res) => {
  const { search, status, jobType, sort } = req.query;

  const queryObject = {
    createdBy: req.user.userId,
  };

  if (status !== 'all') {
    queryObject.status = status;
  }
  if (jobType !== 'all') {
    queryObject.jobType = jobType;
  }
  if (search) {
    queryObject.position = { $regex: search, $options: 'i' };
  }
  // NO AWAIT
  let result = Job.find(queryObject);

  // chain sort conditions
  if (sort === 'latest') {
    result = result.sort('-createdAt');
  }
  if (sort === 'oldest') {
    result = result.sort('createdAt');
  }
  if (sort === 'a-z') {
    result = result.sort('position');
  }
  if (sort === 'z-a') {
    result = result.sort('-position');
  }
  const jobs = await result;

  res
    .status(StatusCodes.OK)
    .json({ jobs, totalJobs: jobs.length, numOfPages: 1 });
};

Search Context Setup

appContext.js

const initialState = {
  jobType: 'full-time',
  jobTypeOptions: ['full-time', 'part-time', 'remote', 'internship'],
  status: 'pending',
  statusOptions: ['pending', 'interview', 'declined']
  //
  //
  //
  search: '',
  searchStatus: 'all',
  searchType: 'all',
  sort: 'latest',
  sortOptions: ['latest', 'oldest', 'a-z', 'z-a'],
}

const clearFilters = () =>{
console.log('clear filters')
}

value={{clearFilters}}

// remember this function :)
const handleChange = ({ name, value }) => {
    dispatch({
      type: HANDLE_CHANGE,
      payload: { name, value },
    })
  }

Search Container - Setup

SearchContainer.js;

import { FormRow, FormRowSelect } from '.';
import { useAppContext } from '../context/appContext';
import Wrapper from '../assets/wrappers/SearchContainer';
const SearchContainer = () => {
  const {
    isLoading,
    search,
    searchStatus,
    searchType,
    sort,
    sortOptions,
    statusOptions,
    jobTypeOptions,
    handleChange,
    clearFilters,
  } = useAppContext();

  const handleSearch = (e) => {
    if (isLoading) return;
    handleChange({ name: e.target.name, value: e.target.value });
  };

  return (
    <Wrapper>
      <form className='form'>
        <h4>search form</h4>
        {/* search position */}
        <div className='form-center'>
          <FormRow
            type='text'
            name='search'
            value={search}
            handleChange={handleSearch}
          ></FormRow>
          {/* rest of the inputs */}
        </div>
      </form>
    </Wrapper>
  );
};

export default SearchContainer;

Search Container - Complete

SearchContainer.js;

import { FormRow, FormRowSelect } from '.';
import { useAppContext } from '../context/appContext';
import Wrapper from '../assets/wrappers/SearchContainer';

const SearchContainer = () => {
  const {
    isLoading,
    search,
    handleChange,
    searchStatus,
    statusOptions,
    jobTypeOptions,
    searchType,
    clearFilters,
    sort,
    sortOptions,
  } = useAppContext();

  const handleSearch = (e) => {
    if (isLoading) return;
    handleChange({ name: e.target.name, value: e.target.value });
  };
  const handleSubmit = (e) => {
    e.preventDefault();
    clearFilters();
  };
  return (
    <Wrapper>
      <form className='form'>
        <h4>search form</h4>
        {/* search position */}
        <div className='form-center'>
          <FormRow
            type='text'
            name='search'
            value={search}
            handleChange={handleSearch}
          ></FormRow>
          {/* search by status */}
          <FormRowSelect
            labelText='job status'
            name='searchStatus'
            value={searchStatus}
            handleChange={handleSearch}
            list={['all', ...statusOptions]}
          ></FormRowSelect>
          {/* search by type */}

          <FormRowSelect
            labelText='job type'
            name='searchType'
            value={searchType}
            handleChange={handleSearch}
            list={['all', ...jobTypeOptions]}
          ></FormRowSelect>
          {/* sort */}

          <FormRowSelect
            name='sort'
            value={sort}
            handleChange={handleSearch}
            list={sortOptions}
          ></FormRowSelect>
          <button
            className='btn btn-block btn-danger'
            disabled={isLoading}
            onClick={handleSubmit}
          >
            clear filters
          </button>
        </div>
      </form>
    </Wrapper>
  );
};

export default SearchContainer;

Clear Filters

actions.js;

export const CLEAR_FILTERS = 'CLEAR_FILTERS';

appContext.js;

const clearFilters = () => {
  dispatch({ type: CLEAR_FILTERS });
};

reducer.js;

if (action.type === CLEAR_FILTERS) {
  return {
    ...state,
    search: '',
    searchStatus: 'all',
    searchType: 'all',
    sort: 'latest',
  };
}

Refactor Get All Jobs

const getJobs = async () => {
  // will add page later
  const { search, searchStatus, searchType, sort } = state;
  let url = `/jobs?status=${searchStatus}&jobType=${searchType}&sort=${sort}`;
  if (search) {
    url = url + `&search=${search}`;
  }
  dispatch({ type: GET_JOBS_BEGIN });
  try {
    const { data } = await authFetch(url);
    const { jobs, totalJobs, numOfPages } = data;
    dispatch({
      type: GET_JOBS_SUCCESS,
      payload: {
        jobs,
        totalJobs,
        numOfPages,
      },
    });
  } catch (error) {
    // logoutUser()
  }
  clearAlert();
};

JobsContainer.js

const JobsContainer = () => {
  const {
    getJobs,
    jobs,
    isLoading,
    page,
    totalJobs,
    search,
    searchStatus,
    searchType,
    sort,

  } = useAppContext()
  useEffect(() => {
    getJobs()
  }, [ search, searchStatus, searchType, sort])

Limit and Skip

jobsController.js;

const getAllJobs = async (req, res) => {
  const { search, status, jobType, sort } = req.query;
  const queryObject = {
    createdBy: req.user.userId,
  };
  if (search) {
    queryObject.position = { $regex: search, $options: 'i' };
  }
  if (status !== 'all') {
    queryObject.status = status;
  }
  if (jobType !== 'all') {
    queryObject.jobType = jobType;
  }
  let result = Job.find(queryObject);

  if (sort === 'latest') {
    result = result.sort('-createdAt');
  }
  if (sort === 'oldest') {
    result = result.sort('createdAt');
  }
  if (sort === 'a-z') {
    result = result.sort('position');
  }
  if (sort === 'z-a') {
    result = result.sort('-position');
  }

  const totalJobs = await result;

  // setup pagination
  const limit = 10;
  const skip = 1;

  result = result.skip(skip).limit(limit);
  // 23
  // 4 7 7 7 2
  const jobs = await result;
  res
    .status(StatusCodes.OK)
    .json({ jobs, totalJobs: jobs.length, numOfPages: 1 });
};

Page and Limit

jobsController.js;

const getAllJobs = async (req, res) => {
  const { search, status, jobType, sort } = req.query;
  const queryObject = {
    createdBy: req.user.userId,
  };
  if (search) {
    queryObject.position = { $regex: search, $options: 'i' };
  }
  if (status !== 'all') {
    queryObject.status = status;
  }
  if (jobType !== 'all') {
    queryObject.jobType = jobType;
  }
  let result = Job.find(queryObject);

  if (sort === 'latest') {
    result = result.sort('-createdAt');
  }
  if (sort === 'oldest') {
    result = result.sort('createdAt');
  }
  if (sort === 'a-z') {
    result = result.sort('position');
  }
  if (sort === 'z-a') {
    result = result.sort('-position');
  }

  // setup pagination
  const page = Number(req.query.page) || 1;
  const limit = Number(req.query.limit) || 10;
  const skip = (page - 1) * limit; //10
  result = result.skip(skip).limit(limit);
  // 75
  // 10 10 10 10 10 10 10 5
  const jobs = await result;
  res
    .status(StatusCodes.OK)
    .json({ jobs, totalJobs: jobs.length, numOfPages: 1 });
};

Total Jobs and Number Of Pages

jobsController.js;

const getAllJobs = async (req, res) => {
  const { search, status, jobType, sort } = req.query;
  const queryObject = {
    createdBy: req.user.userId,
  };
  if (search) {
    queryObject.position = { $regex: search, $options: 'i' };
  }
  if (status !== 'all') {
    queryObject.status = status;
  }
  if (jobType !== 'all') {
    queryObject.jobType = jobType;
  }
  let result = Job.find(queryObject);

  if (sort === 'latest') {
    result = result.sort('-createdAt');
  }
  if (sort === 'oldest') {
    result = result.sort('createdAt');
  }
  if (sort === 'a-z') {
    result = result.sort('position');
  }
  if (sort === 'z-a') {
    result = result.sort('-position');
  }

  // setup pagination
  const page = Number(req.query.page) || 1;
  const limit = Number(req.query.limit) || 10;
  const skip = (page - 1) * limit;

  result = result.skip(skip).limit(limit);

  const jobs = await result;

  const totalJobs = await Job.countDocuments(queryObject);
  const numOfPages = Math.ceil(totalJobs / limit);

  res.status(StatusCodes.OK).json({ jobs, totalJobs, numOfPages });
};

PageBtnContainer Setup

PageBtnContainer.js

JobsContainer.js;

import PageBtnContainer from './PageBtnContainer';

const { numOfPages } = useAppContext();

return (
  <Wrapper>
    <h5>
      {totalJobs} job{jobs.length > 1 && 's'} found
    </h5>
    <div className='jobs'>
      {jobs.map((job) => {
        return <Job key={job._id} {...job} />;
      })}
    </div>
    {numOfPages > 1 && <PageBtnContainer />}
  </Wrapper>
);

PageBtnContainer - Structure

PageBtnContainer.js;

import { useAppContext } from '../context/appContext';
import { HiChevronDoubleLeft, HiChevronDoubleRight } from 'react-icons/hi';
import Wrapper from '../assets/wrappers/PageBtnContainer';

const PageButtonContainer = () => {
  const { numOfPages, page } = useAppContext();

  const prevPage = () => {
    console.log('prev page');
  };
  const nextPage = () => {
    console.log('next page');
  };

  return (
    <Wrapper>
      <button className='prev-btn' onClick={prevPage}>
        <HiChevronDoubleLeft />
        prev
      </button>

      <div className='btn-container'>buttons</div>

      <button className='next-btn' onClick={nextPage}>
        next
        <HiChevronDoubleRight />
      </button>
    </Wrapper>
  );
};

export default PageButtonContainer;

Button Container

[Array.from] (https://youtu.be/zg1Bv4xubwo)

PageBtnContainer.js;

const pages = Array.from({ length: numOfPages }, (_, index) => {
  return index + 1;
});

return (
  <div className='btn-container'>
    {pages.map((pageNumber) => {
      return (
        <button
          type='button'
          className={pageNumber === page ? 'pageBtn active' : 'pageBtn'}
          key={pageNumber}
          onClick={() => console.log(page)}
        >
          {pageNumber}
        </button>
      );
    })}
  </div>
);

Change Page

actions.js;
export const CHANGE_PAGE = 'CHANGE_PAGE';

appContext.js
const changePage = (page) => {
  dispatch({ type: CHANGE_PAGE, payload: { page } })
}
value={{changePage}}

reducer.js;

if (action.type === CHANGE_PAGE) {
  return { ...state, page: action.payload.page };
}

PageBtnContainer.js;

const { changePage } = useAppContext();
return (
  <button
    type='button'
    className={pageNumber === page ? 'pageBtn active' : 'pageBtn'}
    key={pageNumber}
    onClick={() => changePage(pageNumber)}
  >
    {pageNumber}
  </button>
);

Prev and Next Buttons

PageBtnContainer.js;
const prevPage = () => {
  let newPage = page - 1;
  if (newPage < 1) {
    // newPage = 1
    // alternative
    newPage = numOfPages;
  }
  changePage(newPage);
};
const nextPage = () => {
  let newPage = page + 1;
  if (newPage > numOfPages) {
    // newPage = numOfPages
    // alternative
    newPage = 1;
  }
  changePage(newPage);
};

Trigger New Page

appContext.js;

const getJobs = async () => {
  const { page, search, searchStatus, searchType, sort } = state;

  let url = `/jobs?page=${page}&status=${searchStatus}&jobType=${searchType}&sort=${sort}`;
  // rest of the code
};

JobsContainer.js;

const { page } = useAppContext();
useEffect(() => {
  getJobs();
}, [page, search, searchStatus, searchType, sort]);

reducer.js;

if (action.type === HANDLE_CHANGE) {
  // set back to first page

  return { ...state, page: 1, [action.payload.name]: action.payload.value };
}

Production Setup - Fix Warnings and logoutUser

getJobs,deleteJob,showStats - invoke logoutUser()
fix warnings

// eslint-disable-next-line

Production Setup - Build Front-End Application

create front-end production application

package.json
"scripts": {
    "build-client": "cd client && npm run build",
    "server": "nodemon server.js --ignore client",
    "client": "cd client && npm run start",
    "start": "concurrently --kill-others-on-fail \"npm run server\" \"npm run client\""

  },

server.js;

import { dirname } from 'path';
import { fileURLToPath } from 'url';
import path from 'path';

const __dirname = dirname(fileURLToPath(import.meta.url));

// only when ready to deploy
app.use(express.static(path.resolve(__dirname, './client/build')));

// routes
app.use('/api/v1/auth', authRouter);
app.use('/api/v1/jobs', authenticateUser, jobsRouter);

// only when ready to deploy
app.get('*', function (request, response) {
  response.sendFile(path.resolve(__dirname, './client/build', 'index.html'));
});

Security Packages

remove log in the error-handler
helmet Helmet helps you secure your Express apps by setting various HTTP headers.
xss-clean Node.js Connect middleware to sanitize user input coming from POST body, GET queries, and url params.
express-mongo-sanitize Sanitizes user-supplied data to prevent MongoDB Operator Injection.
express-rate-limit Basic rate-limiting middleware for Express.

npm install helmet xss-clean express-mongo-sanitize express-rate-limit

server.js;

import helmet from 'helmet';
import xss from 'xss-clean';
import mongoSanitize from 'express-mongo-sanitize';

app.use(express.json());
app.use(helmet());
app.use(xss());
app.use(mongoSanitize());

Limit Requests

authRoutes.js;

import rateLimiter from 'express-rate-limit';

const apiLimiter = rateLimiter({
  windowMs: 15 * 60 * 1000, // 15 minutes
  max: 10,
  message: 'Too many requests from this IP, please try again after 15 minutes',
});

router.route('/register').post(apiLimiter, register);
router.route('/login').post(apiLimiter, login);

Alternative Search with Debounce

client/components/SearchContainer.js

import { useState, useMemo } from 'react';
const SearchContainer = () => {
  const [localSearch, setLocalSearch] = useState('');
  const {
    ....
  } = useAppContext();
  const handleSearch = (e) => {
    handleChange({ name: e.target.name, value: e.target.value });
  };
  const handleSubmit = (e) => {
    e.preventDefault();
    clearFilters();
  };
  const debounce = () => {
    let timeoutID;
    return (e) => {
      setLocalSearch(e.target.value);
      clearTimeout(timeoutID);
      timeoutID = setTimeout(() => {
        handleChange({ name: e.target.name, value: e.target.value });
      }, 1000);
    };
  };

  const handleSubmit = (e) => {
    e.preventDefault();
    setLocalSearch('');
    clearFilters();
  };

  const optimizedDebounce = useMemo(() => debounce(), []);
  return (
    <Wrapper>
      <form className='form'>
        <h4>search form</h4>
        <div className='form-center'>
          {/* search position */}

          <FormRow
            type='text'
            name='search'
            value={localSearch}
            handleChange={optimizedDebounce}
          />
         ........
        </div>
      </form>
    </Wrapper>
  );
};

export default SearchContainer;

Test User - Initial Setup

create new user (test user)
populate DB with jobs
create a login button

client/pages/Register.js

const Register = () => {
  return (
    <Wrapper className='full-page'>
      <form className='form' onSubmit={onSubmit}>
        <button type='submit' className='btn btn-block' disabled={isLoading}>
          submit
        </button>
        <button
          type='button'
          className='btn btn-block btn-hipster'
          disabled={isLoading}
          onClick={() => {
            setupUser({
              currentUser: { email: 'testUser@test.com', password: 'secret' },
              endPoint: 'login',
              alertText: 'Login Successful! Redirecting...',
            });
          }}
        >
          {isLoading ? 'loading...' : 'demo app'}
        </button>
      </form>
    </Wrapper>
  );
};
export default Register;

Test User - Restrict Access (server)

check for test user in auth middleware
create new property on user object (true/false)
create new middleware (testUser)
check for test user, if true send back BadRequest Error
add testUser middleware in front of routes you want to restrict access to

middleware/auth.js

import jwt from 'jsonwebtoken';
import { UnAuthenticatedError } from '../errors/index.js';

UnAuthenticatedError;
const auth = async (req, res, next) => {
  const authHeader = req.headers.authorization;
  if (!authHeader || !authHeader.startsWith('Bearer')) {
    throw new UnAuthenticatedError('Authentication Invalid');
  }
  const token = authHeader.split(' ')[1];
  try {
    const payload = jwt.verify(token, process.env.JWT_SECRET);
    // TEST USER
    const testUser = payload.userId === 'testUserID';
    req.user = { userId: payload.userId, testUser };
    // TEST USER
    next();
  } catch (error) {
    throw new UnAuthenticatedError('Authentication Invalid');
  }
};

export default auth;

middleware/testUser

import { BadRequestError } from '../errors/index.js';

const testUser = (req, res, next) => {
  if (req.user.testUser) {
    throw new BadRequestError('Test User. Read Only!');
  }
  next();
};

export default testUser;

routes/jobsRoutes

import express from 'express';
const router = express.Router();

import {
  createJob,
  deleteJob,
  getAllJobs,
  updateJob,
  showStats,
} from '../controllers/jobsController.js';

import testUser from '../middleware/testUser.js';

router.route('/').post(testUser, createJob).get(getAllJobs);
// remember about :id
router.route('/stats').get(showStats);
router.route('/:id').delete(testUser, deleteJob).patch(testUser, updateJob);

export default router;

routes/authRoutes

import express from 'express';
const router = express.Router();

import rateLimiter from 'express-rate-limit';
const apiLimiter = rateLimiter({
  windowMs: 15 * 60 * 1000, // 15 minutes
  max: 10,
  message: 'Too many requests from this IP, please try again after 15 minutes',
});

import { register, login, updateUser } from '../controllers/authController.js';
import authenticateUser from '../middleware/auth.js';
import testUser from '../middleware/testUser.js';
router.route('/register').post(apiLimiter, register);
router.route('/login').post(apiLimiter, login);
router.route('/updateUser').patch(authenticateUser, testUser, updateUser);

export default router;

Store JWT in Cookie

BE PREPARED TO REFACTOR CODE !!!
PLEASE DON'T RUSH THROUGH THESES VIDEOS
CHECK FEW TIMES BEFORE REMOVING/ADDING CODE

Attach Cookies to Login response

controllers/authController.js

// login controller

const token = user.createJWT();

const oneDay = 1000 * 60 * 60 * 24;

res.cookie('token', token, {
  httpOnly: true,
  expires: new Date(Date.now() + oneDay),
  secure: process.env.NODE_ENV === 'production',
});

Setup Function in Utils

create attachCookies.js

const attachCookie = ({ res, token }) => {
  const oneDay = 1000 * 60 * 60 * 24;

  res.cookie('token', token, {
    httpOnly: true,
    expires: new Date(Date.now() + oneDay),
    secure: process.env.NODE_ENV === 'production',
  });
};

export default attachCookie;

import in authController.js
invoke in register/login/updateUser

import attachCookie from '../utils/attachCookie.js';

attachCookie({ res, token });

Parse Cookie Coming Back from the Front-End

install cookie-parser (server)

npm install cookie-parser

server.js

import cookieParser from 'cookie-parser';

app.use(express.json());
app.use(cookieParser());

middleware/auth.js

const auth = async (req, res, next) => {
  console.log(req.cookies)
  ....
}

Refactor Auth Middleware

middleware/auth.js

const auth = async (req, res, next) => {
  const token = req.cookies.token;
  if (!token) {
    throw new UnAuthenticatedError('Authentication Invalid');
  }
  // rest of the code
};

SERVER - Remove Token from JSON Response

controllers/authController

res.status(StatusCodes.OK).json({ user, location: user.location });

test the APP

FRONT-END Remove Token from CONTEXT

PLEASE BE CAREFUL WHEN MAKING THESE UPDATES client/context/appContext
remove

const token = localStorage.getItem('token');
const user = localStorage.getItem('user');
const userLocation = localStorage.getItem('location');

fix initial state

const initialState = {
  // remove token all together
  user: null,
  userLocation: '',
  jobLocation: '',
};

remove request interceptor

authFetch.interceptors.request.use(
  (config) => {
    config.headers.common['Authorization'] = `Bearer ${state.token}`;
    return config;
  },
  (error) => {
    return Promise.reject(error);
  }
);

remove both addToLocalStorage and removeFromLocalStorage functions
remove from setupUser and updateUser (token and local storage functions)
remove from the reducer token (COMMAND + F)

const logoutUser = async () => {
  dispatch({ type: LOGOUT_USER });
  // remove local storage code
};

Test Expiration

expires: new Date(Date.now() + 5000),

GET Current User Route

controllers/authController.js

const getCurrentUser = async (req, res) => {
  const user = await User.findOne({ _id: req.user.userId });
  res.status(StatusCodes.OK).json({ user, location: user.location });
};

export { register, login, updateUser, getCurrentUser };

routes/authRoutes.js

import {
  register,
  login,
  updateUser,
  getCurrentUser,
} from '../controllers/authController.js';

router.route('/register').post(apiLimiter, register);
router.route('/login').post(apiLimiter, login);
router.route('/updateUser').patch(authenticateUser, testUser, updateUser);
router.route('/getCurrentUser').get(authenticateUser, getCurrentUser);

GET Current User - Front-End

actions.js

export const GET_CURRENT_USER_BEGIN = 'GET_CURRENT_USER_BEGIN';
export const GET_CURRENT_USER_SUCCESS = 'GET_CURRENT_USER_SUCCESS';

setup imports (appContext and reducer)

GET Current User Request

first set the state value (default TRUE !!!) appContext.js

const initialState = {
  userLoading: true,
};

const getCurrentUser = async () => {
  dispatch({ type: GET_CURRENT_USER_BEGIN });
  try {
    const { data } = await authFetch('/auth/getCurrentUser');
    const { user, location } = data;

    dispatch({
      type: GET_CURRENT_USER_SUCCESS,
      payload: { user, location },
    });
  } catch (error) {
    if (error.response.status === 401) return;
    logoutUser();
  }
};
useEffect(() => {
  getCurrentUser();
}, []);

reducer.js

if (action.type === GET_CURRENT_USER_BEGIN) {
  return { ...state, userLoading: true, showAlert: false };
}
if (action.type === GET_CURRENT_USER_SUCCESS) {
  return {
    ...state,
    userLoading: false,
    user: action.payload.user,
    userLocation: action.payload.location,
    jobLocation: action.payload.location,
  };
}

if (action.type === LOGOUT_USER) {
  return {
    ...initialState,
    userLoading: false,
  };
}

Protected Route FIX

import Loading from '../components/Loading';

const ProtectedRoute = ({ children }) => {
  const { user, userLoading } = useAppContext();

  if (userLoading) return <Loading />;

  if (!user) {
    return <Navigate to='/landing' />;
  }
  return children;
};

export default ProtectedRoute;

Landing Page

import { Navigate } from 'react-router-dom';
import { useAppContext } from '../context/appContext';

const Landing = () => {
  const { user } = useAppContext();
  return (
    <React.Fragment>
      {user && <Navigate to='/' />}
      <Wrapper>// rest of the code..........</Wrapper>
    </React.Fragment>
  );
};

export default Landing;

Logout Route

controllers/authController

const logout = async (req, res) => {
  res.cookie('token', 'logout', {
    httpOnly: true,
    expires: new Date(Date.now() + 1000),
  });
  res.status(StatusCodes.OK).json({ msg: 'user logged out!' });
};

routes/authRoutes

import {
  register,
  login,
  updateUser,
  getCurrentUser,
  logout,
} from '../controllers/authController.js';

router.route('/register').post(apiLimiter, register);
router.route('/login').post(apiLimiter, login);
router.get('/logout', logout);
// rest of the code ....

Logout - Front-End

appContext.js

const logoutUser = async () => {
  await authFetch.get('/auth/logout');
  dispatch({ type: LOGOUT_USER });
};

Prepare for Deployment

in client remove build and node_modules
in server remove node_modules

package.json

"scripts":{
  "setup-production":"npm run install-client && npm run build-client && npm install",
  "install-client":"cd client && npm install",
}

node server
APP NEEDS TO WORK LOCALLY !!!

Github Repo

create new repo
remove all existing repos (CHECK CLIENT !!!)
in the root
git init
git add .
git commit -m "first commit"
push up to Github