"""Attachment model."""
from datetime import datetime

from sqlalchemy import BigInteger, Column, DateTime, ForeignKey, Integer, String
from sqlalchemy.orm import relationship

from app.db.session import Base


class Attachment(Base):
    """Attachment model for booking files."""

    __tablename__ = "attachments"

    id = Column(Integer, primary_key=True, index=True)
    booking_id = Column(Integer, ForeignKey("bookings.id"), nullable=False, index=True)
    filename = Column(String(255), nullable=False)  # Original filename
    stored_filename = Column(String(255), nullable=False)  # UUID-based filename
    filepath = Column(String(500), nullable=False)  # Full path
    size = Column(BigInteger, nullable=False)  # File size in bytes
    content_type = Column(String(100), nullable=False)
    uploaded_by = Column(Integer, ForeignKey("users.id"), nullable=False, index=True)
    created_at = Column(DateTime, nullable=False, default=datetime.utcnow)

    # Relationships
    booking = relationship("Booking", back_populates="attachments")
    uploader = relationship("User")