# from fastapi import (
#     APIRouter,
#     UploadFile,
#     File,
#     Response,
#     Header,
#     HTTPException,
#     Depends,
# )

# from fastapi.security import (
#     HTTPBearer,
#     HTTPAuthorizationCredentials,
# )

# from app.utils.jwt import verify_access_token

# from app.modules.bgRemover.service import process_image

# from app.modules.device_limit.device_limit_repository import (
#     DeviceLimitRepository
# )

# from app.dependencies.auth_dependancy import (
#     get_current_user
# )

# from app.helpers.subscription_helper import (
#     is_premium_user
# )

# from app.modules.user_subscription.user_subscription_service import UserSubscriptionService

# subscription_service = UserSubscriptionService()

# security = HTTPBearer(
#     auto_error=False
# )

# router = APIRouter()

# limit_repo = DeviceLimitRepository()
# @router.post("/remove-bg")
# async def remove_bg(

#     file: UploadFile = File(...),

#     device_id: str = Header(
#         ...,
#         alias="X-Device-Id"
#     ),

#     credentials: HTTPAuthorizationCredentials = Depends(
#         security
#     )

# ):

#     premium_user = False

#     if credentials:

#         token = credentials.credentials


#         payload = verify_access_token(
#             token
#         )

#         if payload:

#             premium_user = await subscription_service.has_active_subscription(
#                 payload["_id"]
#             )


#     if not premium_user:

#         allowed = await limit_repo.check_and_increment_limit(
#             device_id
#         )

#         if not allowed:

#             raise HTTPException(
#                 status_code=403,
#                 detail={
#                     "success": False,
#                     "trigger_subscription": True,
#                     "message": "Daily limit reached"
#                 }
#             )

#     image_data = await file.read()

#     processed = process_image(
#         image_data
#     )

#     return Response(
#         content=processed,
#         media_type="image/png"
#     )







from fastapi import (
    APIRouter,
    UploadFile,
    File,
    Response,
    Header,
    HTTPException,
    Depends
)

from fastapi.security import (
    HTTPBearer,
    HTTPAuthorizationCredentials
)

from app.utils.jwt import verify_access_token
from app.modules.bgRemover.service import process_image
from app.modules.device_limit.device_limit_repository import (
    DeviceLimitRepository
)
from app.modules.user_subscription.user_subscription_service import (
    UserSubscriptionService
)

router = APIRouter()

security = HTTPBearer(auto_error=False)

limit_repo = DeviceLimitRepository()
subscription_service = UserSubscriptionService()


@router.post("/remove-bg")
async def remove_bg(

    file: UploadFile = File(...),

    device_id: str = Header(
        ...,
        alias="X-Device-Id"
    ),

    credentials: HTTPAuthorizationCredentials = Depends(
        security
    )
):

    # Premium User Check
    premium_user = False

    if credentials:

        token = credentials.credentials

        payload = verify_access_token(token)

        if payload:

            premium_user = await subscription_service.has_active_subscription(
                payload["_id"]
            )


    # Free User Limit Check
    usage_info = None

    if not premium_user:

        usage_info = await limit_repo.check_and_increment_limit(
            device_id
        )

        if not usage_info["allowed"]:

            raise HTTPException(

                status_code=403,

                detail={

                    "success": False,

                    "show_reward_ad": True,

                    "message": "Daily free limit reached. Watch ad to continue.",

                    "free_count": usage_info["free_count"],

                    "reward": usage_info["reward"],

                    "adCount": usage_info["adCount"],

                    "remaining_free": usage_info["remaining_free"]

                }
            )

    # Process Image
    image_data = await file.read()

    processed = process_image(
        image_data
    )


    # Success Response
    headers = {}

    if usage_info:

        headers["X-Free-Count"] = str(
            usage_info["free_count"]
        )

        headers["X-Reward"] = str(
            usage_info["reward"]
        )

        headers["X-Ad-Count"] = str(
            usage_info["adCount"]
        )

        headers["X-Remaining-Free"] = str(
            usage_info["remaining_free"]
        )

        headers["X-Usage-Type"] = usage_info["source"]

    else:

        headers["X-Usage-Type"] = "premium"

    return Response(

        content=processed,

        media_type="image/png",

        headers=headers

    )