from sqlalchemy import Column, String, Numeric, Text, DateTime, Boolean, ForeignKey, Enum as SqlEnum
from sqlalchemy.orm import relationship
from utils.utils import Base
from datetime import datetime
import uuid

class Offer(Base):
    __tablename__ = "offers"

    id = Column(String(36), primary_key=True, default=lambda: str(uuid.uuid4()))
    listing_id = Column(String(36), ForeignKey("listings.id", ondelete="CASCADE"), nullable=False, index=True)
    buyer_id = Column(String(36), ForeignKey("users.id", ondelete="CASCADE"), nullable=False, index=True)
    offer_amount = Column(Numeric(12, 2), nullable=False)
    message = Column(Text, nullable=True)
    status = Column(String(50), nullable=False)
    expires_at = Column(DateTime, nullable=False)
    responded_at = Column(DateTime, nullable=True)
    response_message = Column(Text, nullable=True)
    created_at = Column(DateTime, default=datetime.utcnow, nullable=False)
    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow, nullable=False)

    listing = relationship("Listing", back_populates="offers")
    buyer = relationship("User", foreign_keys=[buyer_id], back_populates="offers")