from __future__ import annotations

import os
from typing import Any, Dict
import requests


class PaperlessClient:
    def __init__(self, base_url: str | None = None, token: str | None = None) -> None:
        self.base_url = (base_url or os.getenv("PAPERLESS_BASE_URL", "")).rstrip("/")
        self.token = token or os.getenv("PAPERLESS_TOKEN", "")

    def _headers(self) -> Dict[str, str]:
        headers: Dict[str, str] = {"Accept": "application/json"}
        if self.token:
            headers["Authorization"] = f"Token {self.token}"
        return headers

    def get_document_text(self, doc_id: int) -> str:
        if not self.base_url:
            raise RuntimeError("PAPERLESS_BASE_URL not configured")
        # Example endpoint; adjust to real Paperless API
        url = f"{self.base_url}/api/documents/{doc_id}/"
        resp = requests.get(url, headers=self._headers(), timeout=60)
        resp.raise_for_status()
        data = resp.json()
        # Prefer content field if available; else title
        text = data.get("content", "") or data.get("notes", "") or data.get("title", "")
        return text