Endpoint\Application: Add support for deleting images (#528)

Adds support for deleting application images.

Api docs: https://gotify.net/api-docs#/application/removeAppImage

Author: VerifiedJoseph

docs/endpoints.md

@@ -57,6 +57,12 @@ Upload image for an application
 uploadImage(int $id, string $image): stdClass
 ```
 
+Delete the image for an application
+
+```PHP
+deleteImage(int $id): stdClass
+```
+
 ## ApplicationMessage
 
 ```PHP

src/Endpoint/Application.php

@@ -117,4 +117,19 @@ public function uploadImage(int $id, string $image): stdClass
 
         return (object) $application;
     }
+
+    /**
+     * Delete the image of an application
+     *
+     * @param int $id Application Id
+     *
+     * @return boolean
+     *
+     * @see https://gotify.net/api-docs#/application/removeAppImage API docs for deleting an application image
+     */
+    public function deleteImage(int $id): bool
+    {
+        $response = $this->guzzle->delete($this->endpoint . '/' . $id . '/image');
+        return $response->getStatusCode() === 200 ? true : false;
+    }
 }

tests/Endpoints/ApplicationTest.php

@@ -113,6 +113,16 @@ public function testUploadImage(): void
         $this->assertObjectHasProperty('image', $uploaded);
     }
 
+    /**
+     * Test deleting an image for the application
+     */
+    #[Depends('testUploadImage')]
+    public function testDeleteImage(): void
+    {
+        $deleted = self::$application->deleteImage(self::$appId);
+        $this->assertTrue($deleted);
+    }
+
     /**
      * Test deleting an application
      */