# app/api/v1/shop/orders.py
"""
Shop Orders API (Public)

Public endpoints for managing customer orders in shop frontend.
Uses vendor from request.state (injected by VendorContextMiddleware).
Requires customer authentication for most operations.
"""

import logging

from fastapi import APIRouter, Depends, HTTPException, Path, Query, Request
from sqlalchemy.orm import Session

from app.api.deps import get_current_customer_api
from app.core.database import get_db
from app.services.customer_service import customer_service
from app.services.order_service import order_service
from models.database.customer import Customer
from models.database.user import User
from models.schema.order import (
    OrderCreate,
    OrderDetailResponse,
    OrderListResponse,
    OrderResponse,
)

router = APIRouter()
logger = logging.getLogger(__name__)


def get_customer_from_user(request: Request, user: User, db: Session) -> Customer:
    """
    Helper to get Customer record from authenticated User.

    Args:
        request: FastAPI request (to get vendor)
        user: Authenticated user
        db: Database session

    Returns:
        Customer record

    Raises:
        HTTPException: If customer not found or vendor mismatch
    """
    vendor = getattr(request.state, "vendor", None)

    if not vendor:
        raise HTTPException(
            status_code=404,
            detail="Vendor not found. Please access via vendor domain/subdomain/path.",
        )

    # Find customer record for this user and vendor
    customer = customer_service.get_customer_by_user_id(
        db=db, vendor_id=vendor.id, user_id=user.id
    )

    if not customer:
        raise HTTPException(
            status_code=404, detail="Customer account not found for current vendor"
        )

    return customer


@router.post("/orders", response_model=OrderResponse)
def place_order(
    request: Request,
    order_data: OrderCreate,
    current_user: User = Depends(get_current_customer_api),
    db: Session = Depends(get_db),
):
    """
    Place a new order for current vendor.

    Vendor is automatically determined from request context.
    Customer must be authenticated to place an order.
    Creates an order from the customer's cart.

    Request Body:
    - Order data including shipping address, payment method, etc.
    """
    # Get vendor from middleware
    vendor = getattr(request.state, "vendor", None)

    if not vendor:
        raise HTTPException(
            status_code=404,
            detail="Vendor not found. Please access via vendor domain/subdomain/path.",
        )

    # Get customer record
    customer = get_customer_from_user(request, current_user, db)

    logger.debug(
        f"[SHOP_API] place_order for customer {customer.id}",
        extra={
            "vendor_id": vendor.id,
            "vendor_code": vendor.subdomain,
            "customer_id": customer.id,
            "user_id": current_user.id,
        },
    )

    # Create order
    order = order_service.create_order(
        db=db, vendor_id=vendor.id, order_data=order_data
    )

    logger.info(
        f"Order {order.order_number} placed for vendor {vendor.subdomain}, "
        f"total: €{order.total_amount:.2f}",
        extra={
            "order_id": order.id,
            "order_number": order.order_number,
            "customer_id": customer.id,
            "total_amount": float(order.total_amount),
        },
    )

    # TODO: Update customer stats
    # TODO: Clear cart
    # TODO: Send order confirmation email

    return OrderResponse.model_validate(order)


@router.get("/orders", response_model=OrderListResponse)
def get_my_orders(
    request: Request,
    skip: int = Query(0, ge=0),
    limit: int = Query(50, ge=1, le=100),
    current_user: User = Depends(get_current_customer_api),
    db: Session = Depends(get_db),
):
    """
    Get order history for authenticated customer.

    Vendor is automatically determined from request context.
    Returns all orders placed by the authenticated customer.

    Query Parameters:
    - skip: Number of orders to skip (pagination)
    - limit: Maximum number of orders to return
    """
    # Get vendor from middleware
    vendor = getattr(request.state, "vendor", None)

    if not vendor:
        raise HTTPException(
            status_code=404,
            detail="Vendor not found. Please access via vendor domain/subdomain/path.",
        )

    # Get customer record
    customer = get_customer_from_user(request, current_user, db)

    logger.debug(
        f"[SHOP_API] get_my_orders for customer {customer.id}",
        extra={
            "vendor_id": vendor.id,
            "vendor_code": vendor.subdomain,
            "customer_id": customer.id,
            "skip": skip,
            "limit": limit,
        },
    )

    # Get orders
    orders, total = order_service.get_customer_orders(
        db=db, vendor_id=vendor.id, customer_id=customer.id, skip=skip, limit=limit
    )

    return OrderListResponse(
        orders=[OrderResponse.model_validate(o) for o in orders],
        total=total,
        skip=skip,
        limit=limit,
    )


@router.get("/orders/{order_id}", response_model=OrderDetailResponse)
def get_order_details(
    request: Request,
    order_id: int = Path(..., description="Order ID", gt=0),
    current_user: User = Depends(get_current_customer_api),
    db: Session = Depends(get_db),
):
    """
    Get detailed order information for authenticated customer.

    Vendor is automatically determined from request context.
    Customer can only view their own orders.

    Path Parameters:
    - order_id: ID of the order to retrieve
    """
    # Get vendor from middleware
    vendor = getattr(request.state, "vendor", None)

    if not vendor:
        raise HTTPException(
            status_code=404,
            detail="Vendor not found. Please access via vendor domain/subdomain/path.",
        )

    # Get customer record
    customer = get_customer_from_user(request, current_user, db)

    logger.debug(
        f"[SHOP_API] get_order_details: order {order_id}",
        extra={
            "vendor_id": vendor.id,
            "vendor_code": vendor.subdomain,
            "customer_id": customer.id,
            "order_id": order_id,
        },
    )

    # Get order
    order = order_service.get_order(db=db, vendor_id=vendor.id, order_id=order_id)

    # Verify order belongs to customer
    if order.customer_id != customer.id:
        from app.exceptions import OrderNotFoundException

        raise OrderNotFoundException(str(order_id))

    return OrderDetailResponse.model_validate(order)