from datetime import datetime

from decimal import Decimal

from sqlalchemy import DateTime, DECIMAL, ForeignKey, String
from sqlalchemy.orm import Mapped, mapped_column

from app.db.base import Base
from app.core.money import ZERO_MONEY


class Supplier(Base):
    __tablename__ = "suppliers"

    id: Mapped[str] = mapped_column(String(64), primary_key=True, index=True)
    shop_id: Mapped[str] = mapped_column(ForeignKey("shops.id"), nullable=False, index=True)
    name: Mapped[str] = mapped_column(String(200), nullable=False)
    phone: Mapped[str | None] = mapped_column(String(50), nullable=True)
    address: Mapped[str | None] = mapped_column(String(500), nullable=True)
    opening_balance: Mapped[Decimal] = mapped_column(DECIMAL(18, 2), default=ZERO_MONEY, nullable=False)
    status: Mapped[str] = mapped_column(String(32), default="Active", nullable=False)
    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, nullable=False)
    updated_at: Mapped[datetime] = mapped_column(
        DateTime,
        default=datetime.utcnow,
        onupdate=datetime.utcnow,
        nullable=False,
    )