# vim: tabstop=4 shiftwidth=4 softtabstop=4

# Copyright 2011 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
#
# Copyright 2011 Fourth Paradigm Development, 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 import shortcuts
from django import template
from django import http
from django.conf import settings
from django.contrib.auth.decorators import login_required
from django.shortcuts import render_to_response
from django.shortcuts import redirect
from django.utils.translation import ugettext as _

import datetime
import json
import logging

from django.contrib import messages

from django_openstack import api
from django_openstack import forms
from django_openstack.dash.views import instances as dash_instances
from openstackx.api import exceptions as api_exceptions


LOG = logging.getLogger('django_openstack.syspanel.views.users')


class UserForm(forms.Form):
    def __init__(self, *args, **kwargs):
        tenant_list = kwargs.pop('tenant_list', None)
        super(UserForm, self).__init__(*args, **kwargs)
        self.fields['tenant_id'].choices = [[tenant.id,tenant.id] for tenant in tenant_list]

    id = forms.CharField(label="ID (username)")
    email = forms.CharField(label="Email")
    password = forms.CharField(label="Password", widget=forms.PasswordInput(render_value=False), required=False)
    tenant_id = forms.ChoiceField(label="Primary Tenant")


class UserDeleteForm(forms.SelfHandlingForm):
    user = forms.CharField(required=True)

    def handle(self, request, data):
        user_id = data['user']
        LOG.info('Deleting user with id "%s"' % user_id)
        api.user_delete(request, user_id)
        messages.info(request, '%s was successfully deleted.'
                                % user_id)
            
        return redirect(request.build_absolute_uri())


class UserEnableDisableForm(forms.SelfHandlingForm):
    id = forms.CharField(label="ID (username)", widget=forms.HiddenInput())
    enabled = forms.ChoiceField(label="enabled", widget=forms.HiddenInput(),
                                choices=[[c, c]
                                         for c in ("disable", "enable")])

    def handle(self, request, data):
        user_id = data['id']
        enabled = data['enabled'] == "enable"

        try:
            api.user_update_enabled(request, user_id, enabled)
            messages.info(request, "User %s %s" %
                                   (user_id,
                                    "enabled" if enabled else "disabled"))
        except api_exceptions.ApiException:
            messages.error(request, "Unable to %s user %s" %
                                    ("enable" if enabled else "disable",
                                     user_id))

        return redirect(request.build_absolute_uri())


@login_required
def index(request):
    for f in (UserDeleteForm, UserEnableDisableForm):
        _, handled = f.maybe_handle(request)
        if handled:
            return handled

    users = []
    try:
        users = api.user_list(request)
    except api_exceptions.ApiException, e:
        messages.error(request, 'Unable to list users: %s' %
                                 e.message)