from __future__ import annotations

from datetime import datetime, timezone

from app.extensions import db
from app.models import AttendanceEvent, AttendanceType, Person


def record_attendance(
    person: Person,
    event_type: AttendanceType,
    *,
    created_by_id: int | None = None,
    confidence: float | None = None,
    source: str = "web",
) -> AttendanceEvent:
    event = AttendanceEvent(
        person=person,
        event_type=event_type.value,
        occurred_at=datetime.now(timezone.utc),
        created_by_id=created_by_id,
        confidence=confidence,
        source=source,
    )
    db.session.add(event)
    db.session.commit()
    return event


def last_presence_summary(person: Person) -> str:
    check_in = (
        AttendanceEvent.query.filter_by(person_id=person.id, event_type=AttendanceType.CHECK_IN.value)
        .order_by(AttendanceEvent.occurred_at.desc())
        .first()
    )
    check_out = (
        AttendanceEvent.query.filter_by(person_id=person.id, event_type=AttendanceType.CHECK_OUT.value)
        .order_by(AttendanceEvent.occurred_at.desc())
        .first()
    )

    if not check_in and not check_out:
        return "No attendance recorded"

    check_in_text = _format_event_time(check_in) if check_in else "no check-in"
    check_out_text = _format_event_time(check_out) if check_out else "no check-out"
    return f"From {check_in_text} to {check_out_text}"


def _format_event_time(event: AttendanceEvent) -> str:
    return event.occurred_at.strftime("%Y-%m-%d %H:%M")