from __future__ import annotations

import os
from dataclasses import dataclass

from dotenv import load_dotenv


load_dotenv()


def _parse_bool(value: str | None, default: bool = False) -> bool:
    if value is None:
        return default
    return value.strip().lower() in {"1", "true", "yes", "on"}


@dataclass(frozen=True)
class Settings:
    app_name: str = os.getenv("APP_NAME", "alert-receiver")
    app_host: str = os.getenv("APP_HOST", "0.0.0.0")
    app_port: int = int(os.getenv("APP_PORT", "8080"))

    webhook_token: str = os.getenv("WEBHOOK_TOKEN", "").strip()
    require_webhook_token: bool = _parse_bool(
        os.getenv("REQUIRE_WEBHOOK_TOKEN", "true"),
        default=True,
    )

    forward_to_processor: bool = _parse_bool(
        os.getenv("FORWARD_TO_PROCESSOR", "false"),
        default=False,
    )
    alert_processor_url: str = os.getenv(
        "ALERT_PROCESSOR_URL",
        "http://alert-processor:8081/internal/events",
    )
    alert_processor_token: str = os.getenv(
        "ALERT_PROCESSOR_TOKEN",
        "",
    ).strip()
    forward_timeout_seconds: float = float(
        os.getenv("FORWARD_TIMEOUT_SECONDS", "5")
    )

alert_processor_token: str = os.getenv("ALERT_PROCESSOR_TOKEN", "").strip()

settings = Settings()