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

# 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.

"""
Views for managing instances.
"""
import logging
import re

from django import http
from django import shortcuts
from django.views import generic
from django.core.urlresolvers import reverse, reverse_lazy
from django.utils.datastructures import SortedDict
from django.utils.translation import ugettext_lazy as _
from django.contrib.formtools.wizard.views import SessionWizardView

from horizon import exceptions
from horizon import forms
from horizon import tabs
from horizon import tables
from horizon import workflows
from horizon.forms.views import ModalFormMixin

from openstack_dashboard import api
from .tables import WinDCTable, WinServicesTable
from .workflows import CreateWinDC
from .forms import (WizardFormServiceType, WizardFormConfiguration,
                    WizardFormADConfiguration, WizardFormIISConfiguration)

from horizon import messages

from django.http import HttpResponseRedirect
LOG = logging.getLogger(__name__)


class Wizard(ModalFormMixin, SessionWizardView, generic.FormView):
    template_name = 'project/windc/services_tabs.html'

    def done(self, form_list, **kwargs):
        link = self.request.__dict__['META']['HTTP_REFERER']
        datacenter_id = re.search('windc/(\S+)', link).group(0)[6:-1]
        url = "/project/windc/%s/" % datacenter_id

        service_type = form_list[0].data.get('0-service', '')
        parameters = {'service_type': service_type}

        if service_type == 'Active Directory':
            parameters['configuration'] = 'standalone'
            parameters['name'] = str(form_list[1].data.get('1-dc_name',
                                                           'noname'))
            parameters['domain'] = parameters['name'] # Fix Me in orchestrator
            parameters['adminPassword'] = \
                       str(form_list[1].data.get('1-adm_password', ''))
            dc_count = int(form_list[1].data.get('1-dc_count', 1))
            recovery_password = \
                  str(form_list[1].data.get('1-recovery_password', ''))
            parameters['units'] = []
            parameters['units'].append({'isMaster': True,
                                        'recoveryPassword': recovery_password,
                                        'location': 'west-dc'})
            for dc in range(dc_count - 1):
                parameters['units'].append({'isMaster': False,
                                        'recoveryPassword': recovery_password,
                                        'location': 'west-dc'})

        elif service_type == 'IIS':
            password = form_list[1].data.get('1-adm_password', '')
            domain = form_list[1].data.get('1-iis_domain', '')
            dc_user = form_list[1].data.get('1-domain_user_name', '')
            dc_pass = form_list[1].data.get('1-domain_user_password', '')
            parameters['name'] = str(form_list[1].data.get('1-iis_name',
                                                           'noname'))
            parameters['domain'] = parameters['name']
            parameters['credentials'] = {'username': 'Administrator',
                                         'password': password}
            parameters['domain'] = str(domain)
                                   # 'username': str(dc_user),
                                   # 'password': str(dc_pass)}
            parameters['location'] = 'west-dc'

            parameters['units'] = []
            parameters['units'].append({'id': '1',
                                        'endpoint': [{'host': '10.0.0.1'}],
                                        'location': 'west-dc'})

        service = api.windc.services_create(self.request,
                                            datacenter_id,
                                            parameters)

        message = "The %s service successfully created." % service_type
        messages.success(self.request, message)
        return HttpResponseRedirect(url)

    def get_form(self, step=None, data=None, files=None):
        form = super(Wizard, self).get_form(step, data, files)
        if data:
            service_type = data.get('0-service', '')
            self.service_type = service_type
            if service_type == 'Active Directory':
                self.form_list['1'] = WizardFormADConfiguration
            elif service_type == 'IIS':
                self.form_list['1'] = WizardFormIISConfiguration

        return form

    def get_form_step_data(self, form):
        LOG.debug(form.data)
        return form.data

    def get_context_data(self, form, **kwargs):
        context = super(Wizard, self).get_context_data(form=form, **kwargs)
        if self.steps.index > 0:
            context.update({'service_type': self.service_type})
        return context


class IndexView(tables.DataTableView):
    table_class = WinDCTable
    template_name = 'project/windc/index.html'

    def get_data(self):
        try:
            data_centers = api.windc.datacenters_list(self.request)
        except:
            data_centers = []
            exceptions.handle(self.request,
                              _('Unable to retrieve data centers list.'))
        return data_centers


class WinServices(tables.DataTableView):
    table_class = WinServicesTable
    template_name = 'project/windc/services.html'

    def get_context_data(self, **kwargs):
        context = super(WinServices, self).get_context_data(**kwargs)
        context['dc_name'] = self.dc_name
        return context

    def get_data(self):
        try:
            dc_id = self.kwargs['data_center_id']
            self.datacenter_id = dc_id
            datacenter = api.windc.datacenters_get(self.request, dc_id)
            self.dc_name = datacenter.name
            services = api.windc.services_list(self.request, dc_id)
        except:
            services = []
            exceptions.handle(self.request,
                              _('Unable to retrieve list of services for '
                                'data center "%s".') % self.dc_name)
        return services


class CreateWinDCView(workflows.WorkflowView):
    workflow_class = CreateWinDC
    template_name = 'project/windc/create_dc.html'

    def get_initial(self):
        initial = super(CreateWinDCView, self).get_initial()
        initial['project_id'] = self.request.user.tenant_id
        initial['user_id'] = self.request.user.id
        return initial