npm package: @rahulsolanki_ct/linkedin-login
Description: Package for Linked In Log In feature using OAuth 2.0
Author: ct
Latest version: 1.0.5

# Linked In Login Using OAuth 2.0

This package is used to get authorization code for Linked In Log in feature using OAuth2 in a easy way. After have the authorization code, you can exchange to an access token by sending it to the server to continue to get information needed. For more details, please see at [Authorization Code Flow (3-legged OAuth)](https://docs.microsoft.com/en-us/linkedin/shared/authentication/authorization-code-flow)
See [Usage](#usage) and [Demo](#demo) for instruction.

## Table of contents

- [Installation](#installation)
- [Overview](#overview)
- [Usage](#usage)
- [Support IE](#support-ie)
- [Demo](#demo)
- [Props](#props)

## Installation

```
npm install @rahulsolanki_ct/linkedin-login
```

## Overview

We will trigger `linkedInLogin` by using `useLinkedIn` (recommended) or `LinkedIn` (using render props technique) after click on Sign in with LinkedIn button, a popup window will show up and ask for the permission. After we accepted, the pop up window will redirect to `redirectUri` (should be `LinkedInCallback` component) then notice its opener about the authorization code Linked In provides us. You can use [react-router-dom](https://reactrouter.com/web) or [Next.js's file system routing](https://nextjs.org/docs/routing/introduction)

## Usage

First, we create a button and provide required props:

```js
import React, { useState } from 'react';

import { useLinkedIn } from '@rahulsolanki_ct/linkedin-login';
// You can use provided image shipped by this package or using your own
import linkedin from '@rahulsolanki_ct/linkedin-login/assets/linkedin.png';

function LinkedInPage() {
  const { linkedInLogin } = useLinkedIn({
    clientId: '86vhj2q7ukf83q',
    redirectUri: `${window.location.origin}/linkedin`, // for Next.js, you can use `${typeof window === 'object' && window.location.origin}/linkedin`
    onSuccess: (code) => {
      console.log(code);
    },
    onError: (error) => {
      console.log(error);
    },
  });

  return (
    <img
      onClick={linkedInLogin}
      src={linkedin}
      alt="Sign in with Linked In"
      style={{ maxWidth: '180px', cursor: 'pointer' }}
    />
  );
}
```

If you don't want to use hooks. This library offer render props option:

```js
import React, { useState } from 'react';

import { LinkedIn } from '@rahulsolanki_ct/linkedin-login';
// You can use provided image shipped by this package or using your own
import linkedin from '@rahulsolanki_ct/linkedin-login/assets/linkedin.png';

function LinkedInPage() {
  return (
    <LinkedIn
      clientId="86vhj2q7ukf83q"
      redirectUri={`${window.location.origin}/linkedin`}
      onSuccess={(code) => {
        console.log(code);
      }}
      onError={(error) => {
        console.log(error);
      }}
    >
      {({ linkedInLogin }) => (
        <img
          onClick={linkedInLogin}
          src={linkedin}
          alt="Sign in with Linked In"
          style={{ maxWidth: '180px', cursor: 'pointer' }}
        />
      )}
    </LinkedIn>
  );
}
```

Then we point `redirect_url` to `LinkedInCallback`. You can use [react-router-dom](https://reactrouter.com/web) or [Next.js's file system routing](https://nextjs.org/docs/routing/introduction)

- `react-router-dom`:

```js
import React from 'react';
import { LinkedInCallback } from '@rahulsolanki_ct/linkedin-login';

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

function Demo() {
  return (
    <BrowserRouter>
      <Route exact path="/linkedin" component={LinkedInCallback} />
    </BrowserRouter>
  );
}
```

- Next.js's file system routing:

```js
// pages/linkedin.js
import { LinkedInCallback } from '@rahulsolanki_ct/linkedin-login';
export default function LinkedInPage() {
  return <LinkedInCallback />;
}
```

## Props

- `LinkedIn` component:

| Parameter   | value    | is required |                                                                                                default                                                                                                |
| ----------- | -------- | :---------: | :---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------: |
| clientId    | string   |     yes     |                                                                                                                                                                                                       |
| redirectUri | string   |     yes     |                                                                                                                                                                                                       |
| onSuccess   | function |     yes     |                                                                                                                                                                                                       |
| onError     | function |     no      |                                                                                                                                                                                                       |
| state       | string   |     no      |                                                                      randomly generated string (recommend to keep default value)                                                                      |
| scope       | string   |     no      |                                                                                           'r_emailaddress'                                                                                            |
|             |          |             | See your app scope [here](https://docs.microsoft.com/en-us/linkedin/shared/authentication/authentication?context=linkedin/context#permission-types). If there are more than one, delimited by a space |
| children    | function |     no      |                                                                         Require if using `LinkedIn` component (render props)                                                                          |

Reference: [https://docs.microsoft.com/en-us/linkedin/shared/authentication/authorization-code-flow?context=linkedin/context#step-2-request-an-authorization-code](https://docs.microsoft.com/en-us/linkedin/shared/authentication/authorization-code-flow?context=linkedin/context#step-2-request-an-authorization-code)

- `LinkedInCallback` component:
  No parameters needed