# dependency.py
from fastapi import Request, Depends
from motor.motor_asyncio import AsyncIOMotorClient

from adapters.google_adapter import GoogleAdapter
from api.service.generation_service import GenerationService
from repos.dao import DAO


# ... ваши импорты ...

from aiogram import Bot

from adapters.s3_adapter import S3Adapter
from typing import Optional

# Провайдеры "сырых" клиентов из состояния приложения
def get_mongo_client(request: Request) -> AsyncIOMotorClient:
    return request.app.state.mongo_client

def get_gemini_client(request: Request) -> GoogleAdapter:
    return request.app.state.gemini_client

def get_bot_client(request: Request) -> Bot:
    return request.app.state.bot

def get_s3_adapter(request: Request) -> Optional[S3Adapter]:
    return request.app.state.s3_adapter

# Провайдер DAO (собирается из mongo_client)
def get_dao(
    mongo_client: AsyncIOMotorClient = Depends(get_mongo_client),
    s3_adapter: Optional[S3Adapter] = Depends(get_s3_adapter)
) -> DAO:
    # FastAPI кэширует результат Depends в рамках одного запроса,
    # так что DAO создастся один раз за запрос.
    return DAO(mongo_client, s3_adapter)

# Провайдер сервиса (собирается из DAO и Gemini)
def get_generation_service(
    dao: DAO = Depends(get_dao),
    gemini: GoogleAdapter = Depends(get_gemini_client),
    s3_adapter: S3Adapter = Depends(get_s3_adapter),
    bot: Bot = Depends(get_bot_client),
) -> GenerationService:
    return GenerationService(dao, gemini, s3_adapter, bot)

from fastapi import Header

async def get_project_id(x_project_id: Optional[str] = Header(None, alias="X-Project-ID")) -> Optional[str]:
    return x_project_id