"""Offline smoke for scheduler logic."""
import os

os.environ.setdefault("DATABASE_URL", "postgresql+psycopg://test:test@localhost:5432/test")

from datetime import datetime, timezone

import pytest

from app.services.scheduler import ZOMBIE_THRESHOLD_HOURS, compute_next_run_at


def test_compute_next_run_in_normal_window() -> None:
    now = datetime(2026, 5, 23, 12, 0, tzinfo=timezone.utc)
    next_at = compute_next_run_at(2, 5, now=now)
    assert next_at.date() == datetime(2026, 5, 24).date()
    assert 2 <= next_at.hour <= 4  # window [2, 5) UTC


def test_compute_next_run_cross_midnight() -> None:
    now = datetime(2026, 5, 23, 12, 0, tzinfo=timezone.utc)
    # Window 22..3 = 22:00-23:59 + 00:00-02:59
    next_at = compute_next_run_at(22, 3, now=now)
    # Должен попасть либо в [22,23] либо в [0,3) range
    hour = next_at.hour
    assert hour >= 22 or hour < 3


def test_compute_next_run_window_1_hour() -> None:
    now = datetime(2026, 5, 23, 12, 0, tzinfo=timezone.utc)
    # Минимальное окно [3, 4) → ровно 3-й час
    next_at = compute_next_run_at(3, 4, now=now)
    assert next_at.hour == 3


def test_zombie_threshold_constant() -> None:
    assert ZOMBIE_THRESHOLD_HOURS > 0


def test_compute_next_run_is_future() -> None:
    """next_run_at всегда в будущем (завтра) — не в прошлом."""
    now = datetime(2026, 5, 23, 3, 30, tzinfo=timezone.utc)
    next_at = compute_next_run_at(2, 5, now=now)
    assert next_at > now


def test_compute_next_run_timezone_aware() -> None:
    """Результат всегда timezone-aware (UTC)."""
    now = datetime(2026, 5, 23, 12, 0, tzinfo=timezone.utc)
    next_at = compute_next_run_at(2, 5, now=now)
    assert next_at.tzinfo is not None