"""Product routes: search/list, detail, price history."""

from uuid import UUID

from fastapi import APIRouter, Depends, HTTPException, Query, status
from sqlalchemy.ext.asyncio import AsyncSession

from cartsnitch_api.auth.dependencies import get_current_user
from cartsnitch_api.database import get_db
from cartsnitch_api.schemas import PriceTrendResponse, ProductDetailResponse, ProductResponse
from cartsnitch_api.services.products import ProductService

router = APIRouter(prefix="/products", tags=["products"])


@router.get("", response_model=list[ProductResponse])
async def list_products(
    user_id: str = Depends(get_current_user),
    q: str | None = Query(None),
    category: str | None = Query(None),
    page: int = Query(1, ge=1),
    page_size: int = Query(20, ge=1, le=100),
    db: AsyncSession = Depends(get_db),
):
    svc = ProductService(db)
    return await svc.list_products(q, category, page, page_size)


@router.get("/{product_id}", response_model=ProductDetailResponse)
async def get_product(
    product_id: UUID,
    user_id: str = Depends(get_current_user),
    db: AsyncSession = Depends(get_db),
):
    svc = ProductService(db)
    try:
        return await svc.get_product(product_id)
    except LookupError:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND, detail="Product not found"
        ) from None


@router.get("/{product_id}/prices", response_model=PriceTrendResponse)
async def get_product_prices(
    product_id: UUID,
    user_id: str = Depends(get_current_user),
    db: AsyncSession = Depends(get_db),
):
    svc = ProductService(db)
    try:
        return await svc.get_price_history(product_id)
    except LookupError:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND, detail="Product not found"
        ) from None