Merge pull request #1 from davicente/integrating_oauth2

Adding OAuth2 methods (getting Authorization code, Access token... ) …

composer.json

@@ -6,7 +6,8 @@
     "homepage": "https://github.com/davicente/flysystem-onedrive",
     "require": {
         "league/flysystem": "^1.0",
-        "guzzlehttp/guzzle": "^6.1"
+        "guzzlehttp/guzzle": "^6.1",
+        "stevenmaguire/oauth2-microsoft": "^2.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^5.2"

src/OAuth2/OAuth2Provider.php

@@ -0,0 +1,88 @@
+<?php
+
+namespace JacekBarecki\FlysystemOneDrive\OAuth2;
+
+
+class OAuth2Provider
+{
+
+    /**
+     * @param string $clientId
+     * @param string $clientSecret
+     * @param string $redirectUri
+     */
+    private static function getProvider($clientId, $clientSecret, $redirectUri) {
+        $provider = new \Stevenmaguire\OAuth2\Client\Provider\Microsoft([
+                    'clientId'          => $clientId,
+                    'clientSecret'      => $clientSecret,
+                    'redirectUri'       => $redirectUri
+                ]);
+        return $provider;
+    }
+
+
+    /**
+     * @param string $clientId
+     * @param string $clientSecret
+     * @param string $redirectUri
+     * 
+     * Url returned looks like this:
+     * https://login.live.com/oauth20_authorize.srf?state=OPTIONAL_CUSTOM_CONFIGURED_STATE&scope=wl.basic%2Cwl.signin%2Cwl.skydrive_update%2Cwl.offline_access&response_type=code&approval_prompt=auto&redirect_uri=https%3A%2F%2Fxxxxxxxx.com%2Fpath&client_id=9828281-18237-xxxxxxx
+     */
+    public static function getAuthorization($clientId, $clientSecret, $redirectUri) {
+        $provider = OAuth2Provider::getProvider($clientId, $clientSecret, $redirectUri);
+
+        //Set the scopes needed for OneDrive API
+        $options = [
+            'state' => 'OPTIONAL_CUSTOM_CONFIGURED_STATE',
+            'scope' => ['wl.basic', 'wl.signin', 'wl.skydrive_update', 'wl.offline_access'] // array or string
+        ];
+
+        return $provider->getAuthorizationUrl($options);
+    }
+
+
+    /**
+     * @param string $clientId
+     * @param string $clientSecret
+     * @param string $redirectUri
+     * @param string $code
+     *
+     * To extract the access token:  $token->getToken();
+     * To extract the refresh token:  $token->getRefreshToken();
+     */
+    public static function getTokenFromCode($clientId, $clientSecret, $redirectUri, $code) {
+        $provider = OAuth2Provider::getProvider($clientId, $clientSecret, $redirectUri);
+
+        // Try to get an access token (using the authorization code grant)
+        $token = $provider->getAccessToken('authorization_code', [
+            'code' => $code
+        ]);
+
+        return $token;
+    }
+
+
+    /**
+     * @param string $clientId
+     * @param string $clientSecret
+     * @param string $redirectUri
+     * @param string $refreshToken
+     *
+     * To extract the access token:  $token->getToken();
+     * To extract the refresh token:  $token->getRefreshToken();
+     */
+    public static function getTokenFromRefreshToken($clientId, $clientSecret, $redirectUri, $refreshToken) {
+        $provider = OAuth2Provider::getProvider($clientId, $clientSecret, $redirectUri);
+
+        //Get new access token
+        $token = $provider->getAccessToken('refresh_token', [
+            'refresh_token' => $refreshToken
+        ]);
+
+        return $token;
+    }
+}
+
+
+?>