from django.contrib import admin
from django.contrib.auth import views
from django.contrib.auth.decorators import login_required, permission_required
from django.contrib.auth.forms import AuthenticationForm
from django.contrib.auth.urls import urlpatterns as auth_urlpatterns
from django.contrib.auth.views import LoginView
from django.contrib.messages.api import info
from django.http import HttpRequest, HttpResponse
from django.shortcuts import render
from django.template import RequestContext, Template
from django.urls import path, re_path, reverse_lazy
from django.views.decorators.cache import never_cache
from django.views.i18n import set_language


class CustomRequestAuthenticationForm(AuthenticationForm):
    def __init__(self, request, *args, **kwargs):
        assert isinstance(request, HttpRequest)
        super().__init__(request, *args, **kwargs)


@never_cache
def remote_user_auth_view(request):
    "Dummy view for remote user tests"
    t = Template("Username is {{ user }}.")
    c = RequestContext(request, {})
    return HttpResponse(t.render(c))


def auth_processor_no_attr_access(request):
    render(request, "context_processors/auth_attrs_no_access.html")
    # *After* rendering, we check whether the session was accessed
    return render(
        request,
        "context_processors/auth_attrs_test_access.html",
        {"session_accessed": request.session.accessed},
    )


def auth_processor_attr_access(request):
    render(request, "context_processors/auth_attrs_access.html")
    return render(
        request,
        "context_processors/auth_attrs_test_access.html",
        {"session_accessed": request.session.accessed},
    )


def auth_processor_user(request):
    return render(request, "context_processors/auth_attrs_user.html")


def auth_processor_perms(request):
    return render(request, "context_processors/auth_attrs_perms.html")


def auth_processor_perm_in_perms(request):
    return render(request, "context_processors/auth_attrs_perm_in_perms.html")


def auth_processor_messages(request):
    info(request, "Message 1")
    return render(request, "context_processors/auth_attrs_messages.html")


def userpage(request):
    pass


@permission_required("unknown.permission")
def permission_required_redirect(request):
    pass


@permission_required("unknown.permission", raise_exception=True)
def permission_required_exception(request):
    pass


@login_required
@permission_required("unknown.permission", raise_exception=True)
def login_and_permission_required_exception(request):
    pass


class CustomDefaultRedirectURLLoginView(LoginView):
    def get_default_redirect_url(self):
        return "/custom/"


# special urls for auth test cases
urlpatterns = auth_urlpatterns + [
    path(
        "logout/custom_query/", views.LogoutView.as_view(redirect_field_name="follow")
    ),
    path("logout/next_page/", views.LogoutView.as_view(next_page="/somewhere/")),
    path(
        "logout/next_page/named/", views.LogoutView.as_view(next_page="password_reset")
    ),
    path(
        "logout/allowed_hosts/",
        views.LogoutView.as_view(success_url_allowed_hosts={"otherserver"}),
    ),
    path("remote_user/", remote_user_auth_view),
    path(
        "password_reset_from_email/",
        views.PasswordResetView.as_view(from_email="staffmember@example.com"),
    ),
    path(
        "password_reset_extra_email_context/",
        views.PasswordResetView.as_view(
            extra_email_context={"greeting": "Hello!", "domain": "custom.example.com"},
        ),
    ),
    path(
        "password_reset/custom_redirect/",
        views.PasswordResetView.as_view(success_url="/custom/"),
    ),
    path(
        "password_reset/custom_redirect/named/",
        views.PasswordResetView.as_view(success_url=reverse_lazy("password_reset")),
    ),
    path(
        "password_reset/html_email_template/",
        views.PasswordResetView.as_view(
            html_email_template_name="registration/html_password_reset_email.html"
        ),
    ),
    path(
        "reset/custom/<uidb64>/<token>/",
        views.PasswordResetConfirmView.as_view(success_url="/custom/"),
    ),
    path(
        "reset/custom/named/<uidb64>/<token>/",
        views.PasswordResetConfirmView.as_view(
            success_url=reverse_lazy("password_reset")
        ),
    ),
    path(
        "reset/custom/token/<uidb64>/<token>/",
        views.PasswordResetConfirmView.as_view(reset_url_token="set-passwordcustom"),
    ),
    path(
        "reset/post_reset_login/<uidb64>/<token>/",
        views.PasswordResetConfirmView.as_view(post_reset_login=True),
    ),
    path(
        "reset/post_reset_login_custom_backend/<uidb64>/<token>/",
        views.PasswordResetConfirmView.as_view(
            post_reset_login=True,
            post_reset_login_backend=(
                "django.contrib.auth.backends.AllowAllUsersModelBackend"
            ),
        ),
    ),
    path("reset/missing_parameters/", views.PasswordResetConfirmView.as_view()),
    path(
        "password_change/custom/",
        views.PasswordChangeView.as_view(success_url="/custom/"),
    ),
    path(
        "password_change/custom/named/",
        views.PasswordChangeView.as_view(success_url=reverse_lazy("password_reset")),
    ),
    path("login_required/", login_required(views.PasswordResetView.as_view())),
    path(
        "login_required_login_url/",
        login_required(views.PasswordResetView.as_view(), login_url="/somewhere/"),
    ),
    path("auth_processor_no_attr_access/", auth_processor_no_attr_access),
    path("auth_processor_attr_access/", auth_processor_attr_access),
    path("auth_processor_user/", auth_processor_user),
    path("auth_processor_perms/", auth_processor_perms),
    path("auth_processor_perm_in_perms/", auth_processor_perm_in_perms),
    path("auth_processor_messages/", auth_processor_messages),
    path(
        "custom_request_auth_login/",
        views.LoginView.as_view(authentication_form=CustomRequestAuthenticationForm),
    ),
    re_path("^userpage/(.+)/$", userpage, name="userpage"),
    path("login/redirect_authenticated_user_default/", views.LoginView.as_view()),
    path(
        "login/redirect_authenticated_user/",
        views.LoginView.as_view(redirect_authenticated_user=True),
    ),
    path(
        "login/allowed_hosts/",
        views.LoginView.as_view(success_url_allowed_hosts={"otherserver"}),
    ),
    path(
        "login/get_default_redirect_url/", CustomDefaultRedirectURLLoginView.as_view()
    ),
    path("login/next_page/", views.LoginView.as_view(next_page="/somewhere/")),
    path("login/next_page/named/", views.LoginView.as_view(next_page="password_reset")),
    path("permission_required_redirect/", permission_required_redirect),
    path("permission_required_exception/", permission_required_exception),
    path(
        "login_and_permission_required_exception/",
        login_and_permission_required_exception,
    ),
    path("setlang/", set_language, name="set_language"),
    # This line is only required to render the password reset with is_admin=True
    path("admin/", admin.site.urls),
]
