"""Application dependencies."""

from app.services.image_processor import ImageProcessor
from app.services.layout_detector import LayoutDetector
from app.services.ocr_service import OCRService
from app.services.docx_converter import DocxConverter

# Global instances (initialized on startup)
_layout_detector: LayoutDetector | None = None


def init_layout_detector(model_path: str) -> None:
    """Initialize the global layout detector.

    Called during application startup.
    """
    global _layout_detector
    _layout_detector = LayoutDetector(model_path=model_path)
    _layout_detector.load_model()


def get_layout_detector() -> LayoutDetector:
    """Get the global layout detector instance."""
    if _layout_detector is None:
        raise RuntimeError("Layout detector not initialized. Call init_layout_detector() first.")
    return _layout_detector


def get_image_processor() -> ImageProcessor:
    """Get an image processor instance."""
    return ImageProcessor()


def get_ocr_service() -> OCRService:
    """Get an OCR service instance."""
    return OCRService()


def get_docx_converter() -> DocxConverter:
    """Get a DOCX converter instance."""
    return DocxConverter()