from uuid import UUID

from fastapi import APIRouter, Depends, File, Query, UploadFile

from common.models.gmodel import UserInfo
from router.v1.validator.dependencies import IsValidAccessToken, RemoveNoneResponse
from services.item_service import ItemService
from .protocol import (
    Req_CreateItem,
    Req_UpdateItem,
    Res_DeleteItem,
    Res_ExcelUpload,
    Res_Item,
    Res_ItemList,
    Res_LowestPriceResult,
    Res_LowestPriceTrigger,
)

# 라우터(컨트롤러). 인증(Depends(IsValidAccessToken))으로 UserInfo 를 받아 company_id 로 스코프.
router = APIRouter(prefix="/v1/item", tags=["Item"], responses={404: {"description": "Not found"}})


@router.get(path="/list", response_model=Res_ItemList, summary="상품 목록")
async def list_items(
    service: ItemService = Depends(),
    user_info: UserInfo = Depends(IsValidAccessToken),
    search: str | None = Query(None, description="상품명/상품코드 검색"),
    category: str | None = Query(None, description="카테고리 필터"),
    page: int = Query(1, ge=1),
    size: int = Query(20, ge=1, le=100),
):
    return RemoveNoneResponse(await service.list_items(user_info.company_id, search, category, page, size))


@router.post(path="/create", response_model=Res_Item, summary="상품 등록")
async def create_item(req: Req_CreateItem, service: ItemService = Depends(), user_info: UserInfo = Depends(IsValidAccessToken)):
    return RemoveNoneResponse(
        await service.create_item(user_info.company_id, user_info.user_id, req.model_dump(exclude_unset=True))
    )


@router.post(path="/upload-excel", response_model=Res_ExcelUpload, summary="엑셀 일괄 등록(스텁)")
async def upload_items_excel(
    service: ItemService = Depends(),
    user_info: UserInfo = Depends(IsValidAccessToken),
    file: UploadFile = File(...),
):
    return RemoveNoneResponse(
        Res_ExcelUpload(received_filename=file.filename, status="not_implemented", message="엑셀 일괄 등록은 추후 구현")
    )


@router.get(path="/{item_id}", response_model=Res_Item, summary="상품 조회")
async def get_item(item_id: UUID, service: ItemService = Depends(), user_info: UserInfo = Depends(IsValidAccessToken)):
    return RemoveNoneResponse(await service.get_item(user_info.company_id, str(item_id)))


@router.patch(path="/update/{item_id}", response_model=Res_Item, summary="상품 수정")
async def update_item(
    item_id: UUID, req: Req_UpdateItem, service: ItemService = Depends(), user_info: UserInfo = Depends(IsValidAccessToken)
):
    return RemoveNoneResponse(await service.update_item(user_info.company_id, str(item_id), req.model_dump(exclude_unset=True)))


@router.delete(path="/delete/{item_id}", response_model=Res_DeleteItem, summary="상품 삭제")
async def delete_item(item_id: UUID, service: ItemService = Depends(), user_info: UserInfo = Depends(IsValidAccessToken)):
    return RemoveNoneResponse(await service.delete_item(user_info.company_id, str(item_id)))


@router.post(path="/{item_id}/lowest-price", response_model=Res_LowestPriceTrigger, summary="최저가 수집 요청(스텁)")
async def trigger_lowest_price(item_id: UUID, service: ItemService = Depends(), user_info: UserInfo = Depends(IsValidAccessToken)):
    # 존재/소유 확인만 (없으면 result 에 ITEM_NOT_FOUND)
    got = await service.get_item(user_info.company_id, str(item_id))
    if got.item is None:
        return RemoveNoneResponse(got)
    return RemoveNoneResponse(Res_LowestPriceTrigger(item_id=str(item_id), status="queued", message="최저가 수집 요청됨(스텁)"))


@router.get(path="/{item_id}/lowest-price", response_model=Res_LowestPriceResult, summary="최저가 수집 결과(스텁)")
async def get_lowest_price(item_id: UUID, service: ItemService = Depends(), user_info: UserInfo = Depends(IsValidAccessToken)):
    got = await service.get_item(user_info.company_id, str(item_id))
    if got.item is None:
        return RemoveNoneResponse(got)
    return RemoveNoneResponse(Res_LowestPriceResult(item_id=str(item_id), results=[], message="최저가 수집 결과 없음(스텁)"))