import requests
from django.conf import settings
from django.contrib.auth.mixins import LoginRequiredMixin
from django.http import HttpResponse
from django.http.request import HttpRequest
from django.http.response import HttpResponseRedirect
from django.shortcuts import render
from django.views.decorators.csrf import ensure_csrf_cookie
from graphene_django.views import GraphQLView
from graphql import get_operation_ast, parse
from sentry_sdk.api import start_transaction
from wagtail.admin.views.pages import listing

from core.logger import get_logger

logger = get_logger(__name__)


# For sentry perfomance monitoring
# taken from https://jerrynsh.com/how-to-monitor-python-graphql-api-with-sentry/
class SentryGraphQLView(GraphQLView):
    def execute_graphql_request(
        self,
        request: HttpRequest,
        data,
        query,
        variables,
        operation_name,
        show_graphiql,
    ):
        """
        adapted to use the new GraphQL 3.0 syntax, still need to get the operation type,
        but the code to do this changed significantly, so the above link only explains
        the 'what' and 'why', but no longer the 'how'
        """
        document = parse(query)
        operation_type = get_operation_ast(document, operation_name).operation
        with start_transaction(op=str(operation_type), name=operation_name):
            return super().execute_graphql_request(
                request, data, query, variables, operation_name, show_graphiql
            )


class PrivateGraphQLView(LoginRequiredMixin, SentryGraphQLView):
    pass


@ensure_csrf_cookie
def home(request):
    if settings.SERVE_VIA_WEBPACK:
        try:
            res = requests.get(
                "http://localhost:8080{}".format(request.get_full_path())
            )
            headers = res.headers
            content_type = headers.get("content-type", "text/html")
            return HttpResponse(res.text, content_type=content_type)
        except Exception as e:
            print("Can not connect to dev server at http://localhost:8080:", e)

    return render(request, "index.html", {})


def override_wagtailadmin_explore_default_ordering(request, parent_page_id):
    """
    Wrap Wagtail's explore view to change the default ordering
    """
    if request.method == "GET" and "ordering" not in request.GET:
        # Display reordering handles by default for children of all Page types.
        return HttpResponseRedirect(request.path_info + "?ordering=ord")

    return listing.IndexView.as_view()(request, parent_page_id)