import os
from dataclasses import dataclass
from pathlib import Path


def _boolean(name, default):
    value = os.getenv(name)
    return default if value is None else value.strip().lower() not in {"0", "false", "no", "off"}


@dataclass(frozen=True)
class E2ESettings:
    base_url: str | None
    environment: str
    headless: bool
    slow_mo: int
    action_timeout_ms: int
    navigation_timeout_ms: int
    viewport: dict
    artifact_dir: Path

    @classmethod
    def from_environment(cls):
        return cls(
            base_url=(os.getenv("E2E_BASE_URL") or os.getenv("BASE_URL") or "").rstrip("/") or None,
            environment=os.getenv("E2E_ENVIRONMENT", "local").strip().lower(),
            headless=_boolean("E2E_HEADLESS", True),
            slow_mo=int(os.getenv("E2E_SLOW_MO", "0")),
            action_timeout_ms=int(os.getenv("E2E_ACTION_TIMEOUT_MS", "10000")),
            navigation_timeout_ms=int(os.getenv("E2E_NAVIGATION_TIMEOUT_MS", "45000")),
            viewport={
                "width": int(os.getenv("E2E_VIEWPORT_WIDTH", "1280")),
                "height": int(os.getenv("E2E_VIEWPORT_HEIGHT", "800")),
            },
            artifact_dir=Path(os.getenv("E2E_ARTIFACT_DIR", "test-results/e2e")),
        )