from typing import Optional
from datetime import datetime
from decimal import Decimal
from sqlalchemy import DateTime, Integer, String, DECIMAL, ForeignKey, PrimaryKeyConstraint, ForeignKeyConstraint, UniqueConstraint
from sqlalchemy.sql import func
from sqlalchemy.orm import Mapped, mapped_column
from core.database import Base


class Package(Base):
    __tablename__ = "packages"  # GBultos
    __table_args__ = (
        PrimaryKeyConstraint('id', name='packages_pkey'),
        UniqueConstraint('key', name='packages_key_ukey'),
        ForeignKeyConstraint(['tenant_id'], ['a76.tenants.id'], name='fk_packages_tenant'),
        {"schema": "a76"}
    )

    id: Mapped[int] = mapped_column(Integer, primary_key=True)
    tenant_id: Mapped[int] = mapped_column(Integer, nullable=False, index=True)
    key: Mapped[str] = mapped_column(String(5))
    description_es: Mapped[Optional[str]] = mapped_column(String(40))
    description_en: Mapped[Optional[str]] = mapped_column(String(40))
    weight_unit: Mapped[Optional[Decimal]] = mapped_column(DECIMAL(19, 8))
    plurals: Mapped[Optional[str]] = mapped_column(String(4))
    plural_in: Mapped[Optional[str]] = mapped_column(String(4))
    code_ace: Mapped[Optional[str]] = mapped_column(String(4))
    code_aamex: Mapped[Optional[str]] = mapped_column(String(9))
    
    # Timestamps
    created_at: Mapped[datetime] = mapped_column(DateTime, nullable=False, default=func.now())
    updated_at: Mapped[datetime] = mapped_column(DateTime, nullable=False, default=func.now(), onupdate=func.now())
    deleted_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)