import os
from dataclasses import dataclass


@dataclass
class Config:
    db_url: str
    api_key: str
    station_call: str
    aprs_is_host: str
    aprs_is_port: int
    aprs_is_callsign: str
    aprs_is_passcode: str
    aprs_is_filter: str
    log_level: str

    @classmethod
    def from_env(cls) -> "Config":
        api_key = os.environ.get("API_KEY", "")
        if not api_key:
            raise RuntimeError("API_KEY environment variable is required")
        return cls(
            db_url=os.getenv("DATABASE_URL", "postgresql://aprs:aprs@db:5432/aprs"),
            api_key=api_key,
            station_call=os.getenv("STATION_CALL", "SA6ANW-1"),
            aprs_is_host=os.getenv("APRS_IS_HOST", "rotate.aprs2.net"),
            aprs_is_port=int(os.getenv("APRS_IS_PORT", "14580")),
            aprs_is_callsign=os.getenv("APRS_IS_CALLSIGN", "SA6ANW-1"),
            aprs_is_passcode=os.getenv("APRS_IS_PASSCODE", "-1"),
            aprs_is_filter=os.getenv("APRS_IS_FILTER", "r/58.35/14.05/200"),
            log_level=os.getenv("LOG_LEVEL", "INFO"),
        )