from __future__ import annotations

from dataclasses import dataclass
import os


@dataclass(frozen=True)
class Settings:
    state_file: str
    docker_api_url: str
    docker_timeout_seconds: float
    app_port: int
    dns_provider: str
    dns_base_domain: str
    dns_ttl_seconds: int
    dns_sync_interval_seconds: float
    adguard_url: str
    adguard_username: str
    adguard_password: str
    adguard_api_token: str
    rfc2136_server: str
    rfc2136_zone: str
    rfc2136_port: int
    rfc2136_tsig_key_name: str
    rfc2136_tsig_secret: str
    rfc2136_tsig_algorithm: str


def get_settings() -> Settings:
    return Settings(
        state_file=os.getenv("STATE_FILE", "/data/entries.json"),
        docker_api_url=os.getenv("DOCKER_API_URL", "unix:///var/run/docker.sock"),
        docker_timeout_seconds=float(os.getenv("DOCKER_TIMEOUT_SECONDS", "3")),
        app_port=int(os.getenv("APP_PORT", "31810")),
        dns_provider=os.getenv("DNS_PROVIDER", "none"),
        dns_base_domain=os.getenv("DNS_BASE_DOMAIN", ""),
        dns_ttl_seconds=int(os.getenv("DNS_TTL_SECONDS", "120")),
        dns_sync_interval_seconds=float(os.getenv("DNS_SYNC_INTERVAL_SECONDS", "15")),
        adguard_url=os.getenv("ADGUARD_URL", ""),
        adguard_username=os.getenv("ADGUARD_USERNAME", ""),
        adguard_password=os.getenv("ADGUARD_PASSWORD", ""),
        adguard_api_token=os.getenv("ADGUARD_API_TOKEN", ""),
        rfc2136_server=os.getenv("RFC2136_SERVER", ""),
        rfc2136_zone=os.getenv("RFC2136_ZONE", ""),
        rfc2136_port=int(os.getenv("RFC2136_PORT", "53")),
        rfc2136_tsig_key_name=os.getenv("RFC2136_TSIG_KEY_NAME", ""),
        rfc2136_tsig_secret=os.getenv("RFC2136_TSIG_SECRET", ""),
        rfc2136_tsig_algorithm=os.getenv("RFC2136_TSIG_ALGORITHM", "hmac-sha256"),
    )