from rest_framework.exceptions import APIException
from django.utils.timezone import now

from apps.pos_device.models import DeviceVersion, ProviderCompany, Sessions


class POSDeviceMiddleware:
    REQUIRED_HEADERS = [
        'device-id', 'device-mac', 'device-serial', 'device-name',
        'device-sdk', 'device-provider', 'device-version',
        'device-vname', 'device-lng', 'device-lot'  # noqa
    ]

    def __init__(self, get_response):
        self.get_response = get_response

    def __call__(self, request, *args, **kwargs):
        pass

    def is_post_request(self, request):  # noqa
        """ check if is pos request """

        has_device_headers = request.headers.get('device-id') and request.headers.get('device-mac')
        is_pos_api_path = request.path.startswith('/api/pos/')
        return has_device_headers or is_pos_api_path

    def validate_pos_request(self, request):
        """ validate request headers from pos device """

        data = {key: request.headers.get(key) for key in self.REQUIRED_HEADERS}