from contextlib import suppress

from django.core.exceptions import SuspiciousOperation
from django.db import connection, transaction
from django.http import HttpResponse, StreamingHttpResponse
from django.views.decorators.csrf import csrf_exempt

with suppress(ImportError):  # Python < 3.5
    from http import HTTPStatus


def regular(request):
    return HttpResponse(b"regular content")


def streaming(request):
    return StreamingHttpResponse([b"streaming", b" ", b"content"])


def in_transaction(request):
    return HttpResponse(str(connection.in_atomic_block))


@transaction.non_atomic_requests
def not_in_transaction(request):
    return HttpResponse(str(connection.in_atomic_block))


def suspicious(request):
    raise SuspiciousOperation('dubious')


@csrf_exempt
def malformed_post(request):
    request.POST
    return HttpResponse()


def httpstatus_enum(request):
    return HttpResponse(status=HTTPStatus.OK)