Refactor Forms::delete() to use Doctrine

[MAILPOET-3039]

lib/API/JSON/v1/Forms.php

@@ -303,10 +303,10 @@ class Forms extends APIEndpoint {
   }
 
   public function delete($data = []) {
-    $id = (isset($data['id']) ? (int)$data['id'] : false);
-    $form = Form::findOne($id);
-    if ($form instanceof Form) {
-      $form->delete();
+    $form = $this->getForm($data);
+
+    if ($form instanceof FormEntity) {
+      $this->formsRepository->delete($form);
 
       return $this->successResponse(null, ['count' => 1]);
     } else {

lib/Form/FormsRepository.php

@@ -36,6 +36,11 @@ class FormsRepository extends Repository {
       ->getSingleScalarResult();
   }
 
+  public function delete(FormEntity $form) {
+    $this->remove($form);
+    $this->flush();
+  }
+
   public function trash(FormEntity $form) {
     $this->updateDeletedAt($form, Carbon::now());
   }

tests/integration/API/JSON/v1/FormsTest.php

@@ -239,6 +239,13 @@ class FormsTest extends \MailPoetTest {
     expect($response->meta['count'])->equals(1);
   }
 
+  public function testErrorWhenDeletingNonExistentForm() {
+    $response = $this->endpoint->delete(['id' => 'Invalid ID']);
+    expect($response->errors[0]['error'])->equals('not_found');
+    expect($response->status)->equals(APIResponse::STATUS_NOT_FOUND);
+    expect($response->meta)->isEmpty();
+  }
+
   public function testItCanDuplicateAForm() {
     $response = $this->endpoint->duplicate(['id' => $this->form1->getId()]);
     expect($response->status)->equals(APIResponse::STATUS_OK);

tests/integration/Form/FormsRepositoryTest.php

@@ -13,6 +13,13 @@ class FormsRepositoryTest extends \MailPoetTest {
     $this->repository = $this->diContainer->get(FormsRepository::class);
   }
 
+  public function testItCanDeleteForm() {
+    $form = $this->createForm('Form 1');
+    expect($this->repository->findOneById($form->getId()))->isInstanceOf(FormEntity::class);
+    $this->repository->delete($form);
+    expect($form->getId())->null();
+  }
+
   public function testItCanTrashForm() {
     $form = $this->createForm('Form 1');
     expect($form->getDeletedAt())->null();