From b2e86ce6c7500f92a93074c8e16e8120be24f27d Mon Sep 17 00:00:00 2001
From: Christy Jacob <christyjacob4@gmail.com>
Date: Thu, 24 Dec 2020 18:44:21 +0530
Subject: [PATCH] feat: added Linkedin.php

---
 src/Appwrite/Auth/OAuth2/Linkedin.php | 157 ++++++++++++++++++++++++++
 1 file changed, 157 insertions(+)
 create mode 100644 src/Appwrite/Auth/OAuth2/Linkedin.php

diff --git a/src/Appwrite/Auth/OAuth2/Linkedin.php b/src/Appwrite/Auth/OAuth2/Linkedin.php
new file mode 100644
index 000000000..5f7a76202
--- /dev/null
+++ b/src/Appwrite/Auth/OAuth2/Linkedin.php
@@ -0,0 +1,157 @@
+<?php
+
+namespace Appwrite\Auth\OAuth2;
+
+use Appwrite\Auth\OAuth2;
+
+class Linkedin extends OAuth2
+{
+    /**
+     * @var array
+     */
+    protected $user = [];
+
+    /**
+     * @var array
+     */
+    protected $scopes = [
+        'r_liteprofile',
+        'r_emailaddress',
+    ];
+
+    /**
+     * Documentation.
+     *
+     * OAuth:
+     * https://developer.linkedin.com/docs/oauth2
+     *
+     * API/V2:
+     * https://developer.linkedin.com/docs/guide/v2
+     *
+     * Basic Profile Fields:
+     * https://developer.linkedin.com/docs/fields/basic-profile
+     */
+
+    /**
+     * @return string
+     */
+    public function getName():string
+    {
+        return 'linkedin';
+    }
+
+    /**
+     * @return string
+     */
+    public function getLoginURL():string
+    {
+        return 'https://www.linkedin.com/oauth/v2/authorization?'.\http_build_query([
+                'response_type' => 'code',
+                'client_id' => $this->appID,
+                'redirect_uri' => $this->callback,
+                'scope' => \implode(' ', $this->getScopes()),
+                'state' => \json_encode($this->state),
+            ]);
+    }
+
+    /**
+     * @param string $code
+     *
+     * @return string
+     */
+    public function getAccessToken(string $code):string
+    {
+        $accessToken = $this->request(
+            'POST',
+            'https://www.linkedin.com/oauth/v2/accessToken',
+            ['Content-Type: application/x-www-form-urlencoded'],
+            \http_build_query([
+                'grant_type' => 'authorization_code',
+                'code' => $code,
+                'redirect_uri' => $this->callback,
+                'client_id' => $this->appID,
+                'client_secret' => $this->appSecret,
+            ])
+        );
+
+        $accessToken = \json_decode($accessToken, true);
+
+        if (isset($accessToken['access_token'])) {
+            return $accessToken['access_token'];
+        }
+
+        return '';
+    }
+
+    /**
+     * @param $accessToken
+     *
+     * @return string
+     */
+    public function getUserID(string $accessToken):string
+    {
+        $user = $this->getUser($accessToken);
+
+        if (isset($user['id'])) {
+            return $user['id'];
+        }
+
+        return '';
+    }
+
+    /**
+     * @param $accessToken
+     *
+     * @return string
+     */
+    public function getUserEmail(string $accessToken):string
+    {
+        $email = \json_decode($this->request('GET', 'https://api.linkedin.com/v2/emailAddress?q=members&projection=(elements*(handle~))', ['Authorization: Bearer '.\urlencode($accessToken)]), true);
+
+        if (
+            isset($email['elements']) &&
+            isset($email['elements'][0]) &&
+            isset($email['elements'][0]['handle~']) &&
+            isset($email['elements'][0]['handle~']['emailAddress'])
+        ) {
+            return $email['elements'][0]['handle~']['emailAddress'];
+        }
+
+        return '';
+    }
+
+    /**
+     * @param $accessToken
+     *
+     * @return string
+     */
+    public function getUserName(string $accessToken):string
+    {
+        $user = $this->getUser($accessToken);
+        $name = '';
+
+        if (isset($user['localizedFirstName'])) {
+            $name = $user['localizedFirstName'];
+        }
+
+        if (isset($user['localizedLastName'])) {
+            $name = (empty($name)) ? $user['localizedLastName'] : $name.' '.$user['localizedLastName'];
+        }
+
+        return $name;
+    }
+
+    /**
+     * @param string $accessToken
+     *
+     * @return array
+     */
+    protected function getUser(string $accessToken)
+    {
+        if (empty($this->user)) {
+            $this->user = \json_decode($this->request('GET', 'https://api.linkedin.com/v2/me', ['Authorization: Bearer '.\urlencode($accessToken)]), true);
+        }
+
+        return $this->user;
+    }
+}