from datetime import date, timedelta

from app import db as d
from app.config import get_settings
from app.services import compute_renewal_due


def _conn():
    settings = get_settings()
    settings.data_dir.mkdir(parents=True, exist_ok=True)
    d.init_schema(settings.resolved_db_path)
    return d.connect(settings.resolved_db_path)


def _bike(conn, name="B"):
    return d.get_bike(conn, d.create_bike(conn, name, None))


def _log(conn, bike_id, type, day):
    d.create_event(conn, bike_id, type, day, None, None, None)


def test_no_data_when_no_renewal_event():
    conn = _conn()
    b = _bike(conn)
    _log(conn, b.id, "mot", date(2024, 6, 1))
    r = compute_renewal_due(conn, b, "insurance")
    assert r.status == "no-data"
    assert r.due_date is None
    assert r.days_until is None
    conn.close()


def test_due_is_twelve_months_after_renewal():
    conn = _conn()
    b = _bike(conn)
    _log(conn, b.id, "mot", date(2025, 6, 1))
    r = compute_renewal_due(conn, b, "mot", today=date(2025, 6, 1))
    assert r.renewal_date == date(2025, 6, 1)
    assert r.due_date == date(2026, 6, 1)
    assert r.status == "ok"
    assert r.days_until > get_settings().renewal_due_soon_days
    conn.close()


def test_due_soon_within_lead_time():
    # Due 30 days after today; renewal was 12 months before that.
    conn = _conn()
    b = _bike(conn)
    today = date(2026, 1, 15)
    _log(conn, b.id, "insurance", date(2025, 2, 14))  # due 2026-02-14
    r = compute_renewal_due(conn, b, "insurance", today=today)
    assert r.status == "due-soon"
    assert 0 <= r.days_until <= get_settings().renewal_due_soon_days
    conn.close()


def test_exactly_at_lead_time_is_due_soon():
    conn = _conn()
    b = _bike(conn)
    lead = get_settings().renewal_due_soon_days
    due = date(2026, 4, 1)
    _log(conn, b.id, "mot", date(2025, 4, 1))  # due 2026-04-01
    r = compute_renewal_due(conn, b, "mot", today=due - timedelta(days=lead))
    assert r.days_until == lead
    assert r.status == "due-soon"
    conn.close()


def test_just_outside_lead_time_is_ok():
    conn = _conn()
    b = _bike(conn)
    lead = get_settings().renewal_due_soon_days
    due = date(2026, 4, 1)
    _log(conn, b.id, "mot", date(2025, 4, 1))  # due 2026-04-01
    r = compute_renewal_due(conn, b, "mot", today=due - timedelta(days=lead + 1))
    assert r.days_until == lead + 1
    assert r.status == "ok"
    conn.close()


def test_overdue_when_renewal_is_thirteen_months_old():
    conn = _conn()
    b = _bike(conn)
    _log(conn, b.id, "mot", date.today() - timedelta(days=365 + 31))
    r = compute_renewal_due(conn, b, "mot")
    assert r.status == "overdue"
    assert r.days_until < 0
    conn.close()


def test_renewal_badge_shown_on_bike_page(client):
    client.login()
    bike_id = client.create_bike("Roadie")
    result = client.create_event(bike_id, type="mot", event_date=date.today().isoformat())
    assert result["status"] == 200
    page = client.get(f"/bikes/{bike_id}").text
    assert "MOT" in page
    assert "Insurance" in page