"""Order models."""

import uuid
from datetime import datetime
from enum import Enum

from sqlalchemy import String, Integer, Numeric, DateTime, ForeignKey, Text
from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.database import Base


class OrderStatus(str, Enum):
    """Order status enum."""

    PENDING = "pending"
    PAID = "paid"
    PROCESSING = "processing"
    PRINTING = "printing"
    SHIPPED = "shipped"
    DELIVERED = "delivered"
    CANCELLED = "cancelled"
    REFUNDED = "refunded"


class Order(Base):
    """Order model."""

    __tablename__ = "orders"

    id: Mapped[uuid.UUID] = mapped_column(
        UUID(as_uuid=True), primary_key=True, default=uuid.uuid4
    )
    customer_id: Mapped[uuid.UUID | None] = mapped_column(
        UUID(as_uuid=True), ForeignKey("customers.id"), nullable=True
    )

    # Payment provider info (provider-agnostic)
    payment_provider: Mapped[str | None] = mapped_column(String(50), nullable=True)
    payment_id: Mapped[str | None] = mapped_column(String(255), nullable=True)
    payment_method: Mapped[str | None] = mapped_column(String(100), nullable=True)

    status: Mapped[str] = mapped_column(String(50), default=OrderStatus.PENDING.value)

    # Shipping info
    shipping_name: Mapped[str | None] = mapped_column(String(255), nullable=True)
    shipping_email: Mapped[str | None] = mapped_column(String(255), nullable=True)
    shipping_address_line1: Mapped[str | None] = mapped_column(String(255), nullable=True)
    shipping_address_line2: Mapped[str | None] = mapped_column(String(255), nullable=True)
    shipping_city: Mapped[str | None] = mapped_column(String(100), nullable=True)
    shipping_state: Mapped[str | None] = mapped_column(String(100), nullable=True)
    shipping_postal_code: Mapped[str | None] = mapped_column(String(20), nullable=True)
    shipping_country: Mapped[str | None] = mapped_column(String(2), nullable=True)

    # Financials
    subtotal: Mapped[float | None] = mapped_column(Numeric(10, 2), nullable=True)
    shipping_cost: Mapped[float | None] = mapped_column(Numeric(10, 2), nullable=True)
    tax: Mapped[float | None] = mapped_column(Numeric(10, 2), nullable=True)
    total: Mapped[float | None] = mapped_column(Numeric(10, 2), nullable=True)
    currency: Mapped[str] = mapped_column(String(3), default="USD")

    # Timestamps
    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow)
    updated_at: Mapped[datetime] = mapped_column(
        DateTime, default=datetime.utcnow, onupdate=datetime.utcnow
    )
    paid_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)
    shipped_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)
    delivered_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)

    # Relationships
    customer: Mapped["Customer | None"] = relationship("Customer", back_populates="orders")
    items: Mapped[list["OrderItem"]] = relationship(
        "OrderItem", back_populates="order", cascade="all, delete-orphan"
    )


class OrderItem(Base):
    """Order item model."""

    __tablename__ = "order_items"

    id: Mapped[uuid.UUID] = mapped_column(
        UUID(as_uuid=True), primary_key=True, default=uuid.uuid4
    )
    order_id: Mapped[uuid.UUID] = mapped_column(
        UUID(as_uuid=True), ForeignKey("orders.id", ondelete="CASCADE"), nullable=False
    )
    product_slug: Mapped[str] = mapped_column(String(100), nullable=False)
    product_name: Mapped[str] = mapped_column(String(255), nullable=False)
    variant: Mapped[str | None] = mapped_column(String(50), nullable=True)
    quantity: Mapped[int] = mapped_column(Integer, nullable=False)
    unit_price: Mapped[float] = mapped_column(Numeric(10, 2), nullable=False)

    # POD fulfillment
    pod_provider: Mapped[str | None] = mapped_column(String(50), nullable=True)
    pod_order_id: Mapped[str | None] = mapped_column(String(255), nullable=True)
    pod_status: Mapped[str | None] = mapped_column(String(50), nullable=True)
    pod_tracking_number: Mapped[str | None] = mapped_column(String(100), nullable=True)
    pod_tracking_url: Mapped[str | None] = mapped_column(Text, nullable=True)

    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow)

    # Relationships
    order: Mapped["Order"] = relationship("Order", back_populates="items")