"""PDF document processor"""

import PyPDF2
import logging
from typing import Dict, Any

logger = logging.getLogger(__name__)


class PDFProcessor:
    """Processor for PDF documents"""

    @staticmethod
    def extract_text(file_path: str) -> str:
        """Extract text from PDF file"""
        text = []
        try:
            with open(file_path, "rb") as pdf_file:
                pdf_reader = PyPDF2.PdfReader(pdf_file)
                num_pages = len(pdf_reader.pages)

                for page_num in range(num_pages):
                    page = pdf_reader.pages[page_num]
                    page_text = page.extract_text()
                    text.append(page_text)

            extracted_text = "\n".join(text)
            logger.info(f"Extracted text from PDF: {num_pages} pages")
            return extracted_text
        except Exception as e:
            logger.error(f"Failed to extract text from PDF: {e}")
            raise

    @staticmethod
    def get_metadata(file_path: str) -> Dict[str, Any]:
        """Extract metadata from PDF"""
        try:
            with open(file_path, "rb") as pdf_file:
                pdf_reader = PyPDF2.PdfReader(pdf_file)
                metadata = pdf_reader.metadata

                return {
                    "num_pages": len(pdf_reader.pages),
                    "title": metadata.title if metadata else None,
                    "author": metadata.author if metadata else None,
                }
        except Exception as e:
            logger.error(f"Failed to extract metadata from PDF: {e}")
            return {"num_pages": 0}