from __future__ import annotations

from datetime import date
from typing import Any


TEMPORARY_CONTRIBUTOR_PERMISSIONS = frozenset({"review"})


def contributor_access_status(
    active_review_dates: list[date],
    calibration_review_count: int,
    calibration_passed: bool,
    maximum_active_days: int = 7,
    required_calibration_reviews: int = 100,
) -> dict[str, Any]:
    used_days = len(set(active_review_dates))
    independent_review_allowed = (
        calibration_passed
        and calibration_review_count >= required_calibration_reviews
        and used_days < maximum_active_days
    )
    return {
        "active_days_used": used_days,
        "active_days_remaining": max(0, maximum_active_days - used_days),
        "calibration_complete": calibration_passed and calibration_review_count >= required_calibration_reviews,
        "independent_review_allowed": independent_review_allowed,
        "permissions": sorted(TEMPORARY_CONTRIBUTOR_PERMISSIONS),
    }


def assert_contributor_action_allowed(action: str) -> None:
    if action not in TEMPORARY_CONTRIBUTOR_PERMISSIONS:
        raise PermissionError(f"Temporary contributors cannot perform action: {action}")