from sqlalchemy import Column, Integer, String, DateTime, Text, ForeignKey, Numeric
from sqlalchemy.orm import relationship
from sqlalchemy.sql import func
from app.db.base import Base


class Booking(Base):
    __tablename__ = "bookings"

    id = Column(Integer, primary_key=True, index=True)
    booking_type = Column(String, nullable=False)  # flight, hotel, car_rental, activity
    reference_number = Column(String, unique=True, nullable=False)
    provider = Column(String, nullable=False)
    description = Column(Text)
    start_date = Column(DateTime, nullable=False)
    end_date = Column(DateTime)
    total_amount = Column(Numeric(10, 2), nullable=False)
    currency = Column(String, default="USD")
    status = Column(String, default="confirmed")  # confirmed, cancelled, pending
    booking_details = Column(Text)  # JSON string for flexible booking data
    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
    trip_id = Column(Integer, ForeignKey("trips.id"))
    created_at = Column(DateTime(timezone=True), server_default=func.now())
    updated_at = Column(DateTime(timezone=True), onupdate=func.now())

    user = relationship("User", back_populates="bookings")
    trip = relationship("Trip", back_populates="bookings")