refactor: merge Handler and Service layers into UseCase

src/usecase/_clip_text_encode_usecase.py

@@ -0,0 +1,27 @@
+from __future__ import annotations
+
+from transformers import CLIPTextModel, CLIPTokenizer
+
+from ..domain.model import Conditioning
+from ..domain.repositories._text_encoder_repository import TextEncoderRepository
+
+
+class ClipTextEncodeUsecase:
+    def __init__(self, text_encoder_repo: TextEncoderRepository) -> None:
+        self.text_encoder_repo = text_encoder_repo
+
+    def execute(
+        self, tokenizer: CLIPTokenizer, text_encoder: CLIPTextModel, path: str, text: str
+    ) -> Conditioning:
+        if not text:
+            raise ValueError("Text input is empty.")
+        if path is None:
+            raise ValueError("Clip path is None.")
+        if tokenizer is None or text_encoder is None:
+            raise ValueError("Tokenizer or Text Encoder is None.")
+        if not isinstance(text, str):
+            raise TypeError("Text input must be a string.")
+        embeddings = self.text_encoder_repo.encode(tokenizer, text_encoder, text)
+        if embeddings is None:
+            raise RuntimeError("Failed to generate embeddings.")
+        return Conditioning(conditioning=embeddings, path=path)