from sqlalchemy import Column, Integer, String, Boolean, DateTime, Text, ForeignKey
from sqlalchemy.orm import relationship
from datetime import datetime, timezone
from database import Base


def _utcnow():
    return datetime.now(timezone.utc)


class Customer(Base):
    __tablename__ = "customers"

    id = Column(Integer, primary_key=True, index=True)
    name = Column(String, nullable=False)
    nickname = Column(String, nullable=True)
    phone = Column(String, nullable=True)
    email = Column(String, nullable=True)
    notes = Column(Text, nullable=True)
    is_active = Column(Boolean, default=True, nullable=False)
    created_at = Column(DateTime(timezone=True), default=_utcnow)
    created_by_id = Column(Integer, ForeignKey("users.id"), nullable=False)

    created_by = relationship("User", foreign_keys=[created_by_id])
    orders = relationship("Order", back_populates="customer")