feat : 🛀🏽 get oAuth url for DANA

Author: otnansirk

composer.json

@@ -34,8 +34,8 @@
     "require": {
         "php": ">=7.4",
         "ext-curl": "*",
-        "nesbot/carbon": "^2.69",
-        "ramsey/uuid": "^4.7"
+        "ramsey/uuid": "^4.7",
+        "nesbot/carbon": "^2.71"
     },
     "require-dev": {
         "psy/psysh": "^0.11.20",
@@ -59,4 +59,4 @@
             ]
         }
     }
-}
+}

src/Services/DANA/Traits/HasAccessToken.php

@@ -8,6 +8,7 @@
 use Otnansirk\SnapBI\Support\HttpResponse;
 use Otnansirk\SnapBI\Support\Signature;
 use Otnansirk\SnapBI\Support\Http;
+use Ramsey\Uuid\Uuid;
 
 
 trait HasAccessToken
@@ -61,4 +62,38 @@ public static function accessTokenB2b(): HttpResponseInterface
         $body = ['grantType' => 'client_credentials'];
         return Http::withHeaders($headers)->post($path, $body);
     }
+
+    /**
+     * Get oAuth url
+     *
+     * @param array $params
+     * @param array $data
+     * @param bool $sign
+     *
+     * @inheritDoc https://dashboard.dana.id/api-docs/read/125
+     */
+    public static function oAuthUrl(array $params = [], array $data = [], bool $sign = false)
+    {
+        $seamlessData = count($data)
+            ? ['seamlessData' => json_encode($data)]
+            : [];
+
+        $seamlessSign = $sign
+            ? ['seamlessSign' => Signature::signSHA256withRSA(DanaConfig::class, $data)]
+            : [];
+
+        $queryParams = [
+            'timestamp'   => currentTimestamp()->toIso8601String(),
+            'partnerId'   => DanaConfig::get('partner_id'),
+            'externalId'  => Uuid::uuid4()->toString(),
+            'channelId'   => DanaConfig::get('channel_id'),
+            'state'       => int_rand(32),
+            'scopes'      => 'QUERY_BALANCE,PUBLIC_ID',
+            'redirectUrl' => DanaConfig::get('redirect_url'),
+            ...$params,
+            ...$seamlessData,
+            ...$seamlessSign
+        ];
+        return DanaConfig::get('web_url') . "/v1.0/get-auth-code?" . http_build_query($queryParams);
+    }
 }

src/Support/Signature.php

@@ -111,4 +111,22 @@ final public static function danaAsymetricTransaction(
         // X-SIGNATURE
         return base64_encode($signature);
     }
+
+    /**
+     * Sign the seamlessData with generated privateKey and algorithm SHA256withRSA
+     *
+     * @param string $config
+     * @param array $body
+     * @return string
+     */
+    final public static function signSHA256withRSA(string $config, array $body): string
+    {
+
+        $privateKey = $config::get('ssh_private_key');
+        $signature  = "";
+        if (!openssl_sign(json_encode($body), $signature, $privateKey, OPENSSL_ALGO_SHA256)) {
+            throw new SignatureException("Failed to generate signature");
+        }
+        return base64_encode($signature);
+    }
 }