"""Task API schemas and helpers."""
from __future__ import annotations

from datetime import date, datetime, time, timezone

from pydantic import BaseModel

from app.models.task import TaskCreate


class TaskCreatePayload(BaseModel):
    deal_id: int
    title: str
    description: str | None = None
    due_date: date | None = None

    def to_domain(self) -> TaskCreate:
        return TaskCreate(
            deal_id=self.deal_id,
            title=self.title,
            description=self.description,
            due_date=_date_to_datetime(self.due_date) if self.due_date else None,
        )


def to_range_boundary(value: date | None, *, end_of_day: bool) -> datetime | None:
    """Convert a date query param to an inclusive datetime boundary."""

    if value is None:
        return None
    boundary_time = time(23, 59, 59, 999999) if end_of_day else time(0, 0, 0)
    return datetime.combine(value, boundary_time, tzinfo=timezone.utc)


def _date_to_datetime(value: date) -> datetime:
    return datetime.combine(value, time(0, 0, 0), tzinfo=timezone.utc)