""" manage user """
from django.contrib.auth.decorators import login_required, permission_required
from django.core.paginator import Paginator
from django.shortcuts import get_object_or_404
from django.template.response import TemplateResponse
from django.utils.decorators import method_decorator
from django.views import View

from bookwyrm import forms, models
from bookwyrm.settings import PAGE_LENGTH


# pylint: disable= no-self-use
@method_decorator(login_required, name="dispatch")
@method_decorator(
    permission_required("bookwyrm.moderate_users", raise_exception=True),
    name="dispatch",
)
class UserAdminList(View):
    """ admin view of users on this server """

    def get(self, request):
        """ list of users """
        filters = {}
        server = request.GET.get("server")
        if server:
            server = models.FederatedServer.objects.filter(server_name=server).first()
            filters["federated_server"] = server
            filters["federated_server__isnull"] = False
        username = request.GET.get("username")
        if username:
            filters["username__icontains"] = username

        users = models.User.objects.filter(**filters)

        sort = request.GET.get("sort", "-created_date")
        sort_fields = [
            "created_date",
            "last_active_date",
            "username",
            "federated_server__server_name",
            "is_active",
        ]
        if sort in sort_fields + ["-{:s}".format(f) for f in sort_fields]:
            users = users.order_by(sort)

        paginated = Paginator(users, PAGE_LENGTH)
        data = {
            "users": paginated.get_page(request.GET.get("page")),
            "sort": sort,
            "server": server,
        }
        return TemplateResponse(request, "user_admin/user_admin.html", data)


@method_decorator(login_required, name="dispatch")
@method_decorator(
    permission_required("bookwyrm.moderate_users", raise_exception=True),
    name="dispatch",
)
class UserAdmin(View):
    """ moderate an individual user """

    def get(self, request, user):
        """ user view """
        user = get_object_or_404(models.User, id=user)
        data = {"user": user, "group_form": forms.UserGroupForm()}
        return TemplateResponse(request, "user_admin/user.html", data)

    def post(self, request, user):
        """ update user group """
        user = get_object_or_404(models.User, id=user)
        form = forms.UserGroupForm(request.POST, instance=user)
        if form.is_valid():
            form.save()
        data = {"user": user, "group_form": form}
        return TemplateResponse(request, "user_admin/user.html", data)