from urllib.request import urlopen

from django.http import HttpResponse, StreamingHttpResponse

from django.views.decorators.csrf import csrf_exempt

from .models import Person

def example_view(request):

    return HttpResponse("example view")

def streaming_example_view(request):

    return StreamingHttpResponse((b"I", b"am", b"a", b"stream"))

def model_view(request):

    people = Person.objects.all()

    return HttpResponse("\n".join(person.name for person in people))

def create_model_instance(request):

    person = Person(name="emily")

    person.save()

    return HttpResponse()

def environ_view(request):

    return HttpResponse(

        "\n".join("%s: %r" % (k, v) for k, v in request.environ.items())

    )

def subview(request):

    return HttpResponse("subview")

def subview_calling_view(request):

    with urlopen(request.GET["url"] + "/subview/") as response:

        return HttpResponse("subview calling view: {}".format(response.read().decode()))

def check_model_instance_from_subview(request):

    with urlopen(request.GET["url"] + "/create_model_instance/"):

        pass

    with urlopen(request.GET["url"] + "/model_view/") as response:

        return HttpResponse("subview calling view: {}".format(response.read().decode()))

@csrf_exempt

def method_view(request):

    return HttpResponse(request.method)