Implement OCR engine architecture with base, factory, and specific engines

app/ocr/factory.py

@@ -0,0 +1,24 @@
+from __future__ import annotations
+
+from typing import Any
+
+from app.ocr.base import OcrEngine
+from app.ocr.none import NoOcrEngine
+from app.ocr.paddle import PaddleOcrEngine
+from app.ocr.tesseract import TesseractOcrEngine
+
+
+def create_ocr_engine(config: dict[str, Any]) -> OcrEngine:
+    ocr_cfg = config.get("ocr", {})
+    if not ocr_cfg.get("enabled", True):
+        return NoOcrEngine(ocr_cfg)
+
+    engine = str(ocr_cfg.get("engine", "tesseract")).lower()
+    if engine in {"none", "off", "disabled"}:
+        return NoOcrEngine(ocr_cfg)
+    if engine == "tesseract":
+        return TesseractOcrEngine(ocr_cfg)
+    if engine == "paddle":
+        return PaddleOcrEngine(ocr_cfg)
+
+    raise ValueError(f"Nieznany silnik OCR: {engine}")