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


class Order(Base):
    __tablename__ = "orders"

    id = Column(Integer, primary_key=True, index=True)
    table_id = Column(Integer, ForeignKey("tables.id"), nullable=False)
    opened_by = Column(Integer, ForeignKey("users.id"), nullable=False)
    opened_at = Column(DateTime, default=datetime.utcnow)
    status = Column(String, default="open", nullable=False)  # open|partially_paid|paid|closed|cancelled
    closed_at = Column(DateTime, nullable=True)
    closed_by = Column(Integer, ForeignKey("users.id"), nullable=True)
    notes = Column(Text, nullable=True)

    table = relationship("Table", back_populates="orders")
    opener = relationship("User", foreign_keys=[opened_by], back_populates="orders_opened")
    closer = relationship("User", foreign_keys=[closed_by], back_populates="orders_closed")
    items = relationship("OrderItem", back_populates="order", cascade="all, delete-orphan")
    waiters = relationship("OrderWaiter", back_populates="order", cascade="all, delete-orphan")
    print_logs = relationship("PrintLog", back_populates="order")


class OrderWaiter(Base):
    __tablename__ = "order_waiters"

    id = Column(Integer, primary_key=True, index=True)
    order_id = Column(Integer, ForeignKey("orders.id"), nullable=False)
    waiter_id = Column(Integer, ForeignKey("users.id"), nullable=False)
    assigned_at = Column(DateTime, default=datetime.utcnow)

    order = relationship("Order", back_populates="waiters")
    waiter = relationship("User", back_populates="order_assignments")


class OrderItem(Base):
    __tablename__ = "order_items"

    id = Column(Integer, primary_key=True, index=True)
    order_id = Column(Integer, ForeignKey("orders.id"), nullable=False)
    product_id = Column(Integer, ForeignKey("products.id"), nullable=False)
    added_by = Column(Integer, ForeignKey("users.id"), nullable=False)
    quantity = Column(Integer, nullable=False)
    unit_price = Column(Float, nullable=False)  # price snapshot at time of order
    selected_options = Column(Text, nullable=True)    # JSON array of option ids
    removed_ingredients = Column(Text, nullable=True) # JSON array of ingredient ids
    notes = Column(Text, nullable=True)
    status = Column(String, default="active", nullable=False)  # active|paid|cancelled
    added_at = Column(DateTime, default=datetime.utcnow)
    printed = Column(Boolean, default=False, nullable=False)

    order = relationship("Order", back_populates="items")
    product = relationship("Product", back_populates="order_items")
    added_by_user = relationship("User", back_populates="order_items")


class PrintLog(Base):
    __tablename__ = "print_log"

    id = Column(Integer, primary_key=True, index=True)
    order_id = Column(Integer, ForeignKey("orders.id"), nullable=False)
    printer_id = Column(Integer, ForeignKey("printers.id"), nullable=False)
    printed_at = Column(DateTime, default=datetime.utcnow)
    item_ids = Column(Text, nullable=False)  # JSON array of order_item ids
    success = Column(Boolean, nullable=False)
    error_message = Column(Text, nullable=True)

    order = relationship("Order", back_populates="print_logs")
    printer = relationship("Printer", back_populates="print_logs")