import json
import requests
from typing import Any, Dict, Tuple

class KanboardAPI:
    """Базовый класс для работы с Kanboard через JSON-RPC."""

    def __init__(self, url: str, user: str, token: str):
        self.url: str = url
        self.auth: Tuple[str, str] = (user, token)
        self.request_id: int = 0

    def call(self, method: str, params: Any = None) -> Any:
        """Выполнить JSON-RPC запрос с кодировкой UTF-8."""
        self.request_id += 1
        payload: Dict[str, Any] = {
            "jsonrpc": "2.0",
            "method": method,
            "id": self.request_id,
            "params": params or {}
        }

        try:
            json_data: bytes = json.dumps(payload, ensure_ascii=False).encode('utf-8')
        except Exception as e:
            raise ValueError(f"Ошибка кодирования JSON: {e}")

        headers = {'Content-Type': 'application/json; charset=utf-8'}

        try:
            response = requests.post(self.url, data=json_data, auth=self.auth, headers=headers)
            response.raise_for_status()
            response.encoding = 'utf-8'
        except requests.exceptions.RequestException as e:
            raise ConnectionError(f"Сетевая ошибка при вызове API {method}: {e}")

        try:
            result = response.json()
        except json.JSONDecodeError as e:
            raise ValueError(f"Ошибка декодирования JSON: {e}. Ответ: {response.text[:100]}...")

        if 'error' in result:
            raise Exception(f"API Error: {result['error']}")

        return result.get('result')