feat: add line provider (overtrue#231)

* feat: add line provider

* feat: add line provider

src/Providers/Line.php

@@ -0,0 +1,77 @@
+<?php
+
+namespace Overtrue\Socialite\Providers;
+
+use Overtrue\Socialite\User;
+
+/**
+ * @see https://developers.line.biz/en/docs/line-login/integrate-line-login/ [Integrating LINE Login with your web app]
+ */
+class Line extends Base
+{
+    public const NAME = 'line';
+    protected string $baseUrl = 'https://api.line.me/oauth2/';
+    protected string $version = 'v2.1';
+    protected array $scopes = ['profile'];
+
+    protected function getAuthUrl(): string
+    {
+        $this->state = $this->state ?: md5(uniqid());
+        return $this->buildAuthUrlFromBase('https://access.line.me/oauth2/'.$this->version.'/authorize');
+    }
+
+    protected function getTokenUrl(): string
+    {
+        return $this->baseUrl.$this->version.'/token';
+    }
+
+    /**
+     * @param  string  $code
+     *
+     * @return array
+     */
+    protected function getTokenFields(string $code): array
+    {
+        return [
+            'client_id' => $this->getClientId(),
+            'client_secret' => $this->getClientSecret(),
+            'code' => $code,
+            'grant_type' => 'authorization_code',
+            'redirect_uri' => $this->redirectUrl,
+        ];
+    }
+
+    /**
+     * @param  string  $token
+     *
+     * @return array
+     * @throws \GuzzleHttp\Exception\GuzzleException
+     */
+    protected function getUserByToken(string $token): array
+    {
+        $response = $this->getHttpClient()->get(
+            'https://api.line.me/v2/profile',
+            [
+                'headers' => [
+                    'Accept' => 'application/json',
+                    'Authorization' => 'Bearer '.$token,
+                ],
+            ]
+        );
+
+        return \json_decode($response->getBody(), true) ?? [];
+    }
+
+    protected function mapUserToObject(array $user): User
+    {
+        return new User(
+            [
+                'id' => $user['userId'] ?? null,
+                'name' => $user['displayName'] ?? null,
+                'nickname' => $user['displayName'] ?? null,
+                'avatar' => $user['pictureUrl'] ?? null,
+                'email' => null,
+            ]
+        );
+    }
+}

src/SocialiteManager.php

@@ -31,6 +31,7 @@ class SocialiteManager implements FactoryInterface
         Providers\Facebook::NAME => Providers\Facebook::class,
         Providers\DingTalk::NAME => Providers\DingTalk::class,
         Providers\OpenWeWork::NAME => Providers\OpenWeWork::class,
+        Providers\Line::NAME => Providers\Line::class,
     ];
 
     public function __construct(array $config)