from sqlalchemy import Column, Integer, String, DateTime, Numeric, Boolean, Text, Enum, ForeignKey
from sqlalchemy.orm import relationship
from datetime import datetime
import enum
from ..config.database import Base


class BookingStatus(str, enum.Enum):
    pending = "pending"
    confirmed = "confirmed"
    checked_in = "checked_in"
    checked_out = "checked_out"
    cancelled = "cancelled"


class Booking(Base):
    __tablename__ = "bookings"

    id = Column(Integer, primary_key=True, index=True, autoincrement=True)
    booking_number = Column(String(50), unique=True, nullable=False, index=True)
    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
    room_id = Column(Integer, ForeignKey("rooms.id"), nullable=False)
    check_in_date = Column(DateTime, nullable=False)
    check_out_date = Column(DateTime, nullable=False)
    num_guests = Column(Integer, nullable=False, default=1)
    total_price = Column(Numeric(10, 2), nullable=False)
    status = Column(Enum(BookingStatus), nullable=False, default=BookingStatus.pending)
    deposit_paid = Column(Boolean, nullable=False, default=False)
    requires_deposit = Column(Boolean, nullable=False, default=False)
    special_requests = 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)

    # Relationships
    user = relationship("User", back_populates="bookings")
    room = relationship("Room", back_populates="bookings")
    payments = relationship("Payment", back_populates="booking", cascade="all, delete-orphan")
    service_usages = relationship("ServiceUsage", back_populates="booking", cascade="all, delete-orphan")
    checkin_checkout = relationship("CheckInCheckOut", back_populates="booking", uselist=False)