import tempfile

import django
from django.contrib.auth import login
from django.contrib.auth.models import User
from django.http import FileResponse
from django.http import HttpResponse
from django.urls import include
from django.urls import path
from django.urls import re_path
from django.views.decorators.cache import cache_page
from django.views.generic import TemplateView

from ddtrace.trace import tracer

from .. import views


# django.conf.urls.url was deprecated in django 3 and removed in django 4
if django.VERSION < (4, 0, 0):
    from django.conf.urls import url as handler
else:
    from django.urls import re_path as handler


def repath_view(request):
    return HttpResponse(status=200)


def path_view(request):
    return HttpResponse(status=200)


def send_file(request):
    f = tempfile.NamedTemporaryFile()
    f.write(b"Stream Hello World!" * 100)
    return FileResponse(f, content_type="text/plain")


def authenticated_view(request):
    """
    This view can be used to test requests with an authenticated user. Create a
    user with a default username, save it and then use this user to log in.
    Always returns a 200.
    """

    user = User(username="Jane Doe")
    user.save()
    login(request, user)
    return HttpResponse(status=200)


def shutdown(request):
    # Endpoint used to flush traces to the agent when doing snapshots.
    tracer.shutdown()
    return HttpResponse(status=200)


urlpatterns = [
    handler(r"^$", views.index),
    handler(r"^simple/$", views.BasicView.as_view()),
    handler(r"^users/$", views.UserList.as_view(), name="users-list"),
    handler(r"^cached-template/$", views.TemplateCachedUserList.as_view(), name="cached-template-list"),
    handler(r"^safe-template/$", views.SafeTemplateUserList.as_view(), name="safe-template-list"),
    handler(r"^cached-users/$", cache_page(60)(views.UserList.as_view()), name="cached-users-list"),
    handler(r"^fail-view/$", views.ForbiddenView.as_view(), name="forbidden-view"),
    handler(r"^authenticated/$", authenticated_view, name="authenticated-view"),
    handler(r"^static-method-view/$", views.StaticMethodView.as_view(), name="static-method-view"),
    handler(r"^fn-view/$", views.function_view, name="fn-view"),
    handler(r"^feed-view/$", views.FeedView(), name="feed-view"),
    handler(r"^partial-view/$", views.partial_view, name="partial-view"),
    handler(r"^lambda-view/$", views.lambda_view, name="lambda-view"),
    handler(r"^error-500/$", views.error_500, name="error-500"),
    handler(r"^template-view/$", views.template_view, name="template-view"),
    handler(r"^template-simple-view/$", views.template_simple_view, name="template-simple-view"),
    handler(r"^template-list-view/$", views.template_list_view, name="template-list-view"),
    handler(r"^stream-file/$", send_file, name="stream-file"),
    re_path(r"re-path.*/", repath_view),
    path("path/", path_view),
    path("include/", include("tests.contrib.django.django_app.extra_urls")),
    # This must precede composed-view.
    handler(r"^some-static-view/$", TemplateView.as_view(template_name="my-template.html")),
    handler(r"^composed-template-view/$", views.ComposedTemplateView.as_view(), name="composed-template-view"),
    handler(r"^composed-get-view/$", views.ComposedGetView.as_view(), name="composed-get-view"),
    handler(r"^composed-view/$", views.ComposedView.as_view(), name="composed-view"),
    handler(r"^404-view/$", views.not_found_view, name="404-view"),
    handler(r"^shutdown-tracer/$", shutdown, name="shutdown-tracer"),
    handler(r"^alter-resource/$", views.alter_resource),
    handler(r"^identify/$", views.identify, name="identify"),
]
