from urllib.request import Request

import httpx
from fastapi import HTTPException, Depends, Security
from fastapi.security import SecurityScopes
from httpx import ConnectError

from .config import AUTH_SERVER_URL
from .model import UserModel, ValidateTokenInput
from .schema import oauth2


async def validate_token(_input: ValidateTokenInput):
    try:
        client = httpx.AsyncClient()
        headers = {'Content-Type': 'application/json', }
        result = await client.request('POST', AUTH_SERVER_URL, json=_input.dict(), headers=headers)
        export = result.text
        if 'application/json' in result.headers['content-type']:
            export = result.json()
        if result.status_code > 299:
            raise HTTPException(status_code=result.status_code, detail=export)
        return export
    except ConnectError as e:
        raise HTTPException(status_code=400, detail=str(e))
    except HTTPException as e:
        raise e
    except Exception as e:
        raise HTTPException(status_code=400, detail=str(e))


async def get_current_user(security_scopes: SecurityScopes, token: str = Depends(oauth2)):
    if security_scopes.scopes:
        authenticate_value = f'Bearer scope="{security_scopes.scope_str}"'
    else:
        authenticate_value = f"Bearer"
    credentials_exception = HTTPException(
        status_code=401,
        detail="Could not validate credentials a",
        headers={"WWW-Authenticate": authenticate_value},
    )
    user = await validate_token(ValidateTokenInput(token=token, scopes=security_scopes.scopes))
    if user is None:
        raise credentials_exception
    user.scopes = security_scopes.scopes if isinstance(
        security_scopes.scopes, list) else security_scopes.scopes
    return user


async def get_current_active_user(request: Request, current_user: UserModel = Security(get_current_user, scopes=["account"]),):
    if current_user.disabled:
        raise HTTPException(status_code=400, detail="Inactive user")
    request.state.user = UserModel(**current_user.dict())
    return current_user