
# Copyright 2017-present Open Networking Foundation
#
# 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.contrib import admin

from services.volt.models import *
from django import forms
from django.utils.safestring import mark_safe
from django.contrib.auth.admin import UserAdmin
from django.contrib.admin.widgets import FilteredSelectMultiple
from django.contrib.auth.forms import ReadOnlyPasswordHashField
from django.contrib.auth.signals import user_logged_in
from django.utils import timezone
from django.contrib.contenttypes import generic
from suit.widgets import LinkedSelect
from core.admin import ServiceAppAdmin,SliceInline,ServiceAttrAsTabInline, ReadOnlyAwareAdmin, XOSTabularInline, ServicePrivilegeInline, SubscriberLinkInline, ProviderLinkInline, ProviderDependencyInline,SubscriberDependencyInline
from core.middleware import get_request

from functools import update_wrapper
from django.contrib.admin.views.main import ChangeList
from django.core.urlresolvers import reverse
from django.contrib.admin.utils import quote

#-----------------------------------------------------------------------------
# vOLT
#-----------------------------------------------------------------------------

class VOLTServiceAdmin(ReadOnlyAwareAdmin):
    model = VOLTService
    verbose_name = "vOLT Service"
    verbose_name_plural = "vOLT Service"
    list_display = ("backend_status_icon", "name", "enabled")
    list_display_links = ('backend_status_icon', 'name', )
    fieldsets = [(None, {'fields': ['backend_status_text', 'name','enabled','versionNumber', 'description',"view_url","icon_url" ], 'classes':['suit-tab suit-tab-general']})]
    readonly_fields = ('backend_status_text', )
    inlines = [SliceInline,ServiceAttrAsTabInline,ServicePrivilegeInline,ProviderDependencyInline,SubscriberDependencyInline]

    extracontext_registered_admins = True

    user_readonly_fields = ["name", "enabled", "versionNumber", "description"]

    suit_form_tabs =(('general', 'vOLT Service Details'),
        ('administration', 'Administration'),
        #('tools', 'Tools'),
        ('slices','Slices'),
        ('serviceattrs','Additional Attributes'),
        ('servicetenants', 'Dependencies'),
        ('serviceprivileges','Privileges'),
    )

    suit_form_includes = (('voltadmin.html', 'top', 'administration'),
                           ) #('hpctools.html', 'top', 'tools') )

class VOLTTenantForm(forms.ModelForm):
    s_tag = forms.CharField()
    c_tag = forms.CharField()
    creator = forms.ModelChoiceField(queryset=User.objects.all())

    def __init__(self,*args,**kwargs):
        super (VOLTTenantForm,self ).__init__(*args,**kwargs)
        self.fields['owner'].queryset = VOLTService.objects.all()
        if self.instance:
            # fields for the attributes
            self.fields['c_tag'].initial = self.instance.c_tag
            self.fields['s_tag'].initial = self.instance.s_tag
            self.fields['creator'].initial = self.instance.creator
        if (not self.instance) or (not self.instance.pk):
            # default fields for an 'add' form
            self.fields['creator'].initial = get_request().user
            if VOLTService.objects.exists():
               self.fields["owner"].initial = VOLTService.objects.all()[0]

    def save(self, commit=True):
        self.instance.s_tag = self.cleaned_data.get("s_tag")
        self.instance.c_tag = self.cleaned_data.get("c_tag")
        self.instance.creator = self.cleaned_data.get("creator")
        return super(VOLTTenantForm, self).save(commit=commit)

    class Meta:
        model = VOLTTenant
        fields = '__all__'


class VOLTTenantAdmin(ReadOnlyAwareAdmin):
    list_display = ('backend_status_icon', 'id', 'service_specific_id', 's_tag', 'c_tag', )
    list_display_links = ('backend_status_icon', 'id')
    fieldsets = [ (None, {'fields': ['backend_status_text', 'owner', 'service_specific_id', # 'service_specific_attribute',
                                     's_tag', 'c_tag', 'creator'],
                          'classes':['suit-tab suit-tab-general']})]
    readonly_fields = ('backend_status_text', 'service_specific_attribute')
    inlines = (ProviderLinkInline, SubscriberLinkInline)
    form = VOLTTenantForm

    suit_form_tabs = (('general','Details'), ('servicelinks','Links'),)

    def get_queryset(self, request):
        return VOLTTenant.select_by_user(request.user)

class AccessDeviceInline(XOSTabularInline):
    model = AccessDevice
    fields = ['volt_device','uplink','vlan']
    readonly_fields = []
    extra = 0
#    max_num = 0
    suit_classes = 'suit-tab suit-tab-accessdevices'

#    @property
#    def selflink_reverse_path(self):
#        return "admin:cord_volttenant_change"

class VOLTDeviceAdmin(ReadOnlyAwareAdmin):
    list_display = ('backend_status_icon', 'name', 'openflow_id', 'driver' )
    list_display_links = ('backend_status_icon', 'name', 'openflow_id')
    fieldsets = [ (None, {'fields': ['backend_status_text','name','volt_service','openflow_id','driver','access_agent'],
                          'classes':['suit-tab suit-tab-general']})]
    readonly_fields = ('backend_status_text',)
    inlines = [AccessDeviceInline]

    suit_form_tabs = (('general','Details'), ('accessdevices','Access Devices'))

class AccessDeviceAdmin(ReadOnlyAwareAdmin):
    list_display = ('backend_status_icon', 'id', 'volt_device', 'uplink', 'vlan' )
    list_display_links = ('backend_status_icon', 'id')
    fieldsets = [ (None, {'fields': ['backend_status_text','volt_device','uplink','vlan'],
                          'classes':['suit-tab suit-tab-general']})]
    readonly_fields = ('backend_status_text',)

    suit_form_tabs = (('general','Details'),)

class AgentPortMappingInline(XOSTabularInline):
    model = AgentPortMapping
    fields = ['access_agent', 'mac', 'port']
    readonly_fields = []
    extra = 0
#    max_num = 0
    suit_classes = 'suit-tab suit-tab-accessportmaps'

#    @property
#    def selflink_reverse_path(self):
#        return "admin:cord_volttenant_change"

class AccessAgentAdmin(ReadOnlyAwareAdmin):
    list_display = ('backend_status_icon', 'name', 'mac' )
    list_display_links = ('backend_status_icon', 'name')
    fieldsets = [ (None, {'fields': ['backend_status_text','name','volt_service','mac'],
                          'classes':['suit-tab suit-tab-general']})]
    readonly_fields = ('backend_status_text',)
    inlines= [AgentPortMappingInline]

    suit_form_tabs = (('general','Details'), ('accessportmaps', 'Port Mappings'))

admin.site.register(VOLTService, VOLTServiceAdmin)
admin.site.register(VOLTTenant, VOLTTenantAdmin)
admin.site.register(VOLTDevice, VOLTDeviceAdmin)
admin.site.register(AccessDevice, AccessDeviceAdmin)
admin.site.register(AccessAgent, AccessAgentAdmin)