fix(TextToImage): Refactor scheduling mechanism

core/Controller/TextToImageApiController.php

@@ -81,6 +81,12 @@ class TextToImageApiController extends OCSController {
 		if (strlen($input) > 64_000) {
 			return new DataResponse(['message' => $this->l->t('Input text is too long')], Http::STATUS_PRECONDITION_FAILED);
 		}
+		if ($numberOfImages > 12) {
+			return new DataResponse(['message' => $this->l->t('Cannot generate more than 12 images')], Http::STATUS_PRECONDITION_FAILED);
+		}
+		if ($numberOfImages < 1) {
+			return new DataResponse(['message' => $this->l->t('Cannot generate less than 1 image')], Http::STATUS_PRECONDITION_FAILED);
+		}
 		$task = new Task($input, $appId, $numberOfImages, $this->userId, $identifier);
 		try {
 			try {

lib/public/TextToImage/Task.php

@@ -68,6 +68,12 @@ final class Task implements \JsonSerializable {
 		protected ?string $userId,
 		protected ?string $identifier = '',
 	) {
+		if ($this->numberOfImages > 12) {
+			throw new \ValueError('Cannot generate more than 12 images');
+		}
+		if ($this->numberOfImages < 1) {
+			throw new \ValueError('Cannot generate less than 1 image');
+		}
 	}
 
 	/**