# Copyright 2012 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
#
# Copyright 2012 Nebula, Inc.
#
#    Licensed under the Apache License, Version 2.0 (the "License"); you may
#    not use this file except in compliance with the License. You may obtain
#    a copy of the License at
#
#         http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
#    License for the specific language governing permissions and limitations
#    under the License.

from django.urls import reverse
from django.utils.translation import ugettext_lazy as _
from novaclient import exceptions as nova_exceptions

from horizon import exceptions
from horizon import forms
from horizon import messages

from openstack_dashboard import api


class CreateSnapshot(forms.SelfHandlingForm):
    instance_id = forms.CharField(label=_("Instance ID"),
                                  widget=forms.HiddenInput(),
                                  required=False)
    name = forms.CharField(max_length=255, label=_("Snapshot Name"))

    def handle(self, request, data):
        try:
            snapshot = api.nova.snapshot_create(request,
                                                data['instance_id'],
                                                data['name'])
            # NOTE(gabriel): This API call is only to display a pretty name.
            instance = api.nova.server_get(request, data['instance_id'])
            vals = {"name": data['name'], "inst": instance.name}
            messages.success(request, _('Snapshot "%(name)s" created for '
                                        'instance "%(inst)s"') % vals)
            return snapshot
        except nova_exceptions.Forbidden as exc:
            if str(exc).startswith('Quota exceeded for resources: snapshots'):
                msg = _('Quota exceeded for creating snapshots')
            else:
                msg = _('Unable to create snapshot.')

            redirect = reverse("horizon:project:instances:index")
            exceptions.handle(request, msg, redirect=redirect)
        except Exception:
            msg = _('Unable to create snapshot.')
            redirect = reverse("horizon:project:instances:index")
            exceptions.handle(request, msg, redirect=redirect)
