feat: add notion oauth provider

app/config/providers.php

@@ -131,6 +131,16 @@ return [ // Ordered by ABC.
         'beta' => false,
         'mock' => false,
     ],
+    'notion' => [
+        'name' => 'Notion',
+        'developers' => 'https://developers.notion.com/docs',
+        'icon' => 'icon-notion',
+        'enabled' => true,
+        'sandbox' => false,
+        'form' => false,
+        'beta' => false,
+        'mock' => false,
+    ],
     'paypal' => [
         'name' => 'PayPal',
         'developers' => 'https://developer.paypal.com/docs/api/overview/',

src/Appwrite/Auth/OAuth2/Notion.php

@@ -0,0 +1,148 @@
+<?php
+
+namespace Appwrite\Auth\OAuth2;
+
+use Appwrite\Auth\OAuth2;
+
+class Notion extends OAuth2
+{
+    /**
+     * @var string
+     */
+    private $endpoint = 'https://api.notion.com/v1';
+
+    /**
+     * @var string
+     */
+    private $version = '2021-08-16';
+
+    /**
+     * @var array
+     */
+    protected $user = [];
+
+    /**
+     * @var array
+     */
+    protected $scopes = [];
+
+    /**
+     * @return string
+     */
+    public function getName():string
+    {
+        return 'notion';
+    }
+
+    /**
+     * @return string
+     */
+    public function getLoginURL():string
+    {
+        return $this->endpoint . '/oauth/authorize?'. \http_build_query([
+            'client_id' => $this->appID,
+            'redirect_uri' => $this->callback,
+            'response_type' => 'code',
+            'state' => \json_encode($this->state),
+            'owner' => 'user'
+        ]);
+    }
+
+    /**
+     * @param string $code
+     *
+     * @return string
+     */
+    public function getAccessToken(string $code):string
+    {
+        $headers = [
+            "Authorization: Basic " . \base64_encode($this->appID . ":" . $this->appSecret),
+        ];
+
+        $response = $this->request(
+            'POST',
+            $this->endpoint . '/oauth/token',
+            $headers,
+            \http_build_query([
+                'grant_type' => 'authorization_code',
+                'redirect_uri' => $this->callback,
+                'code' => $code
+            ])
+        );
+
+        $response = \json_decode($response, true);
+
+        if (isset($response['access_token'])) {
+            return $response['access_token'];
+        }
+
+        return '';
+    }
+
+    /**
+     * @param $accessToken
+     *
+     * @return string
+     */
+    public function getUserID(string $accessToken):string
+    {
+        $response = $this->getUser($accessToken);
+
+        if (isset($response['bot']['owner']['user']['id'])) {
+            return $response['bot']['owner']['user']['id'];
+        }
+
+        return '';
+    }
+
+    /**
+     * @param $accessToken
+     *
+     * @return string
+     */
+    public function getUserEmail(string $accessToken):string
+    {
+        $response = $this->getUser($accessToken);
+
+        if(isset($response['bot']['owner']['user']['person']['email'])){
+            return $response['bot']['owner']['user']['person']['email'];
+        }
+
+        return '';
+    }
+
+    /**
+     * @param $accessToken
+     *
+     * @return string
+     */
+    public function getUserName(string $accessToken):string
+    {
+        $response = $this->getUser($accessToken);
+
+        if (isset($response['bot']['owner']['user']['name'])) {
+            return $response['bot']['owner']['user']['name'];
+        }
+
+        return '';
+    }
+
+    /**
+     * @param string $accessToken
+     *
+     * @return array
+     */
+    protected function getUser(string $accessToken)
+    {
+        $headers = [
+            'Notion-Version: ' . $this->version,
+            'Authorization: Bearer '.\urlencode($accessToken)
+        ];
+
+        if (empty($this->user)) {
+            $this->user = \json_decode($this->request('GET', $this->endpoint . '/users/me', $headers), true);
+        }
+
+        return $this->user;
+    }
+}