Simplify the auth flow by removing the full page redirect. (#1075)

* Simplify the auth flow by removing the full page redirect.

Author: Kyon147

src/Traits/AuthController.php

@@ -6,7 +6,6 @@
 use Illuminate\Http\RedirectResponse;
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\Redirect;
-use Illuminate\Support\Facades\Session;
 use Illuminate\Support\Facades\View;
 use Osiset\ShopifyApp\Actions\AuthenticateShop;
 use Osiset\ShopifyApp\Exceptions\MissingAuthUrlException;
@@ -51,17 +50,12 @@ public function authenticate(Request $request, AuthenticateShop $authShop)
             // Show exception, something is wrong
             throw new SignatureVerificationException('Invalid HMAC verification');
         } elseif ($status === false) {
-            if (! $result['url']) {
+            if (!$result['url']) {
                 throw new MissingAuthUrlException('Missing auth url');
             }
 
-            return View::make(
-                'shopify-app::auth.fullpage_redirect',
-                [
-                    'authUrl' => $result['url'],
-                    'shopDomain' => $shopDomain->toNative(),
-                ]
-            );
+            // Just return them straight to the OAUTH flow.
+            return Redirect::to($result['url']);
         } else {
             // Go to home route
             return Redirect::route(

tests/Traits/AuthControllerTest.php

@@ -23,12 +23,9 @@ public function testAuthRedirectsToShopifyWhenNoCode(): void
         // Run the request
         $response = $this->call('post', '/authenticate', ['shop' => 'example.myshopify.com']);
 
-        // Check the view
-        $response->assertViewHas('shopDomain', 'example.myshopify.com');
-        $response->assertViewHas(
-            'authUrl',
-            'https://example.myshopify.com/admin/oauth/authorize?client_id='.Util::getShopifyConfig('api_key').'&scope=read_products%2Cwrite_products&redirect_uri=https%3A%2F%2Flocalhost%2Fauthenticate'
-        );
+        // Check the redirect happens and location is set properly in the header.
+        $response->assertStatus(302);
+        $response->assertHeader('location', 'https://example.myshopify.com/admin/oauth/authorize?client_id='.Util::getShopifyConfig('api_key').'&scope=read_products%2Cwrite_products&redirect_uri=https%3A%2F%2Flocalhost%2Fauthenticate');
     }
 
     public function testAuthAcceptsShopWithCode(): void