"""Stunden-Auszahlung: HR/Admin weist Überstunden-Stunden zur Lohn-Auszahlung an."""
import uuid
from datetime import datetime
from decimal import Decimal
from typing import TYPE_CHECKING

from sqlalchemy import DateTime, ForeignKey, Integer, Numeric, Text, func
from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.core.database import Base

if TYPE_CHECKING:
    from app.models.user import User
    from app.models.company import Company


class HoursPayout(Base):
    """Ein Auszahlungsvorgang für Überstunden-Stunden."""
    __tablename__ = "hours_payouts"

    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    company_id: Mapped[uuid.UUID] = mapped_column(
        UUID(as_uuid=True), ForeignKey("companies.id", ondelete="CASCADE"),
        nullable=False, index=True
    )
    user_id: Mapped[uuid.UUID] = mapped_column(
        UUID(as_uuid=True), ForeignKey("users.id", ondelete="CASCADE"),
        nullable=False, index=True
    )
    hours: Mapped[Decimal] = mapped_column(Numeric(6, 2), nullable=False)  # ausgezahlte Stunden
    period_year: Mapped[int | None] = mapped_column(Integer)               # Abrechnungsmonat Jahr
    period_month: Mapped[int | None] = mapped_column(Integer)              # Abrechnungsmonat Monat
    note: Mapped[str | None] = mapped_column(Text)                         # Notiz für Buchhaltung
    created_by: Mapped[uuid.UUID] = mapped_column(
        UUID(as_uuid=True), ForeignKey("users.id", ondelete="SET NULL"),
        nullable=False
    )
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), server_default=func.now(), index=True
    )

    user: Mapped["User"] = relationship("User", foreign_keys=[user_id], lazy="noload")
    creator: Mapped["User"] = relationship("User", foreign_keys=[created_by], lazy="noload")
    company: Mapped["Company"] = relationship("Company", lazy="noload")