async def post(self) -> Union[web.json_response, web.HTTPException]:
"""
Take user credentials and check if user exist.
If exist - return his profile in JSON. Else -> HTTPException
Returns: User profile or Exception
"""
request_data = await self.request.json()
result = await self.find_user(request_data)
if not result:
raise web.HTTPNotFound(text="User not found")
profile = Profile(**clean_data(result))
if profile.check_password(request_data['password']):
await profile.fetch_contacts(self.request.app['db'])
return web.json_response(profile.to_dict(), status=200)
raise web.HTTPNotAcceptable(text="Wrong password")
