from datetime import UTC, datetime

from app import db


class Order(db.Model):
    """Order model"""

    __tablename__ = "orders"

    id = db.Column(db.Integer, primary_key=True)
    user_id = db.Column(db.Integer, db.ForeignKey("users.id"), nullable=False)
    status = db.Column(db.String(20), default="pending", index=True)
    total_amount = db.Column(db.Numeric(10, 2), nullable=False)
    shipping_address = db.Column(db.Text)
    created_at = db.Column(db.DateTime, default=lambda: datetime.now(UTC))
    updated_at = db.Column(
        db.DateTime,
        default=lambda: datetime.now(UTC),
        onupdate=lambda: datetime.now(UTC),
    )

    # Relationships
    user = db.relationship("User", back_populates="orders")
    items = db.relationship(
        "OrderItem",
        back_populates="order",
        lazy="dynamic",
        cascade="all, delete-orphan",
    )

    def to_dict(self):
        """Convert order to dictionary"""
        return {
            "id": self.id,
            "user_id": self.user_id,
            "status": self.status,
            "total_amount": float(self.total_amount) if self.total_amount else None,
            "shipping_address": self.shipping_address,
            "created_at": self.created_at.isoformat() if self.created_at else None,
            "updated_at": self.updated_at.isoformat() if self.updated_at else None,
            "items": [item.to_dict() for item in self.items],
        }

    def __repr__(self):
        return f"<Order {self.id}>"


class OrderItem(db.Model):
    """Order Item model"""

    __tablename__ = "order_items"

    id = db.Column(db.Integer, primary_key=True)
    order_id = db.Column(db.Integer, db.ForeignKey("orders.id"), nullable=False)
    product_id = db.Column(db.Integer, db.ForeignKey("products.id"), nullable=False)
    quantity = db.Column(db.Integer, nullable=False)
    price = db.Column(db.Numeric(10, 2), nullable=False)

    # Relationships
    order = db.relationship("Order", back_populates="items")
    product = db.relationship("Product", back_populates="order_items")

    def to_dict(self):
        """Convert order item to dictionary"""
        return {
            "id": self.id,
            "order_id": self.order_id,
            "product_id": self.product_id,
            "quantity": self.quantity,
            "price": float(self.price) if self.price else None,
        }

    def __repr__(self):
        return f"<OrderItem {self.id}>"