# -*- mode: python; coding: utf-8 -*-
# Re2o est un logiciel d'administration développé initiallement au rezometz. Il
# se veut agnostique au réseau considéré, de manière à être installable en
# quelques clics.
#
# Copyright © 2017  Gabriel Détraz
# Copyright © 2017  Goulven Kermarec
# Copyright © 2017  Augustin Lemesle
# Copyright © 2017  Maël Kervella
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

from __future__ import unicode_literals

import re

from django.forms import ModelForm, Form, ValidationError
from django import forms
from .models import Domain, Machine, Interface, IpList, MachineType, Extension, Mx, Text, Ns, Service, Vlan, Nas, IpType, OuverturePortList, OuverturePort
from django.db.models import Q
from django.core.validators import validate_email

from users.models import User

class EditMachineForm(ModelForm):
    class Meta:
        model = Machine
        fields = '__all__'

    def __init__(self, *args, **kwargs):
        prefix = kwargs.pop('prefix', self.Meta.model.__name__)
        super(EditMachineForm, self).__init__(*args, prefix=prefix, **kwargs)
        self.fields['name'].label = 'Nom de la machine'

class NewMachineForm(EditMachineForm):
    class Meta(EditMachineForm.Meta):
        fields = ['name']

class BaseEditMachineForm(EditMachineForm):
    class Meta(EditMachineForm.Meta):
        fields = ['name','active']

class EditInterfaceForm(ModelForm):
    class Meta:
        model = Interface
        fields = ['machine', 'type', 'ipv4', 'mac_address', 'details']

    def __init__(self, *args, **kwargs):
        prefix = kwargs.pop('prefix', self.Meta.model.__name__)
        super(EditInterfaceForm, self).__init__(*args, prefix=prefix, **kwargs)
        self.fields['mac_address'].label = 'Adresse mac'
        self.fields['type'].label = 'Type de machine'
        self.fields['type'].empty_label = "Séléctionner un type de machine"
        if "ipv4" in self.fields:
            self.fields['ipv4'].empty_label = "Assignation automatique de l'ipv4"
            self.fields['ipv4'].queryset = IpList.objects.filter(interface__isnull=True)
            # Add it's own address
            self.fields['ipv4'].queryset |=  IpList.objects.filter(interface=self.instance)
        if "machine" in self.fields:
            self.fields['machine'].queryset = Machine.objects.all().select_related('user')

class AddInterfaceForm(EditInterfaceForm):
    class Meta(EditInterfaceForm.Meta):
        fields = ['type','ipv4','mac_address','details']

    def __init__(self, *args, **kwargs):
        infra = kwargs.pop('infra')
        super(AddInterfaceForm, self).__init__(*args, **kwargs)
        self.fields['ipv4'].empty_label = "Assignation automatique de l'ipv4"
        if not infra:
            self.fields['type'].queryset = MachineType.objects.filter(ip_type__in=IpType.objects.filter(need_infra=False))
            self.fields['ipv4'].queryset = IpList.objects.filter(interface__isnull=True).filter(ip_type__in=IpType.objects.filter(need_infra=False))
        else:
            self.fields['ipv4'].queryset = IpList.objects.filter(interface__isnull=True)

class NewInterfaceForm(EditInterfaceForm):
    class Meta(EditInterfaceForm.Meta):
        fields = ['type','mac_address','details']

class BaseEditInterfaceForm(EditInterfaceForm):
    class Meta(EditInterfaceForm.Meta):
        fields = ['type','ipv4','mac_address','details']

    def __init__(self, *args, **kwargs):
        infra = kwargs.pop('infra')
        super(BaseEditInterfaceForm, self).__init__(*args, **kwargs)
        self.fields['ipv4'].empty_label = "Assignation automatique de l'ipv4"
        if not infra:
            self.fields['type'].queryset = MachineType.objects.filter(ip_type__in=IpType.objects.filter(need_infra=False))
            self.fields['ipv4'].queryset = IpList.objects.filter(interface__isnull=True).filter(ip_type__in=IpType.objects.filter(need_infra=False))
            # Add it's own address
            self.fields['ipv4'].queryset |=  IpList.objects.filter(interface=self.instance)
        else:
            self.fields['ipv4'].queryset = IpList.objects.filter(interface__isnull=True)
            self.fields['ipv4'].queryset |=  IpList.objects.filter(interface=self.instance)

class AliasForm(ModelForm):
    class Meta:
        model = Domain
        fields = ['name','extension']

    def __init__(self, *args, **kwargs):
        prefix = kwargs.pop('prefix', self.Meta.model.__name__)
        if 'infra' in kwargs:
            infra = kwargs.pop('infra')
        super(AliasForm, self).__init__(*args, prefix=prefix, **kwargs)

class DomainForm(AliasForm):
    class Meta(AliasForm.Meta):
        fields = ['name']

    def __init__(self, *args, **kwargs):
        if 'user' in kwargs:
            user = kwargs.pop('user')
            nb_machine = kwargs.pop('nb_machine')
            initial = kwargs.get('initial', {})
            initial['name'] = user.get_next_domain_name()
            kwargs['initial'] = initial 
        prefix = kwargs.pop('prefix', self.Meta.model.__name__)
        super(DomainForm, self).__init__(*args, prefix=prefix, **kwargs)
 
class DelAliasForm(Form):
    alias = forms.ModelMultipleChoiceField(queryset=Domain.objects.all(), label="Alias actuels",  widget=forms.CheckboxSelectMultiple)

    def __init__(self, *args, **kwargs):
        interface = kwargs.pop('interface')
        super(DelAliasForm, self).__init__(*args, **kwargs)
        self.fields['alias'].queryset = Domain.objects.filter(cname__in=Domain.objects.filter(interface_parent=interface))

class MachineTypeForm(ModelForm):
    class Meta:
        model = MachineType
        fields = ['type','ip_type']

    def __init__(self, *args, **kwargs):
        prefix = kwargs.pop('prefix', self.Meta.model.__name__)
        super(MachineTypeForm, self).__init__(*args, prefix=prefix, **kwargs)
        self.fields['type'].label = 'Type de machine à ajouter'
        self.fields['ip_type'].label = "Type d'ip relié"

class DelMachineTypeForm(Form):
    machinetypes = forms.ModelMultipleChoiceField(queryset=MachineType.objects.all(), label="Types de machines actuelles",  widget=forms.CheckboxSelectMultiple)

class IpTypeForm(ModelForm):
    class Meta:
        model = IpType
        fields = ['type','extension','need_infra','domaine_ip_start','domaine_ip_stop', 'prefix_v6', 'vlan']
        
    def __init__(self, *args, **kwargs):
        prefix = kwargs.pop('prefix', self.Meta.model.__name__)
        super(IpTypeForm, self).__init__(*args, prefix=prefix, **kwargs)
        self.fields['type'].label = 'Type ip à ajouter'

class EditIpTypeForm(IpTypeForm):
    class Meta(IpTypeForm.Meta):
        fields = ['extension','type','need_infra', 'prefix_v6', 'vlan']

class DelIpTypeForm(Form):
    iptypes = forms.ModelMultipleChoiceField(queryset=IpType.objects.all(), label="Types d'ip actuelles",  widget=forms.CheckboxSelectMultiple)

class ExtensionForm(ModelForm):
    class Meta:
        model = Extension
        fields = ['name', 'need_infra', 'origin']

    def __init__(self, *args, **kwargs):
        prefix = kwargs.pop('prefix', self.Meta.model.__name__)
        super(ExtensionForm, self).__init__(*args, prefix=prefix, **kwargs)
        self.fields['name'].label = 'Extension à ajouter'
        self.fields['origin'].label = 'Enregistrement A origin'

class DelExtensionForm(Form):
    extensions = forms.ModelMultipleChoiceField(queryset=Extension.objects.all(), label="Extensions actuelles",  widget=forms.CheckboxSelectMultiple)

class MxForm(ModelForm):
    class Meta:
        model = Mx
        fields = ['zone', 'priority', 'name']
      
    def __init__(self, *args, **kwargs):
        prefix = kwargs.pop('prefix', self.Meta.model.__name__)
        super(MxForm, self).__init__(*args, prefix=prefix, **kwargs)
        self.fields['name'].queryset = Domain.objects.exclude(interface_parent=None)
  
class DelMxForm(Form):
    mx = forms.ModelMultipleChoiceField(queryset=Mx.objects.all(), label="MX actuels",  widget=forms.CheckboxSelectMultiple)

class NsForm(ModelForm):
    class Meta:
        model = Ns
        fields = ['zone', 'ns']

    def __init__(self, *args, **kwargs):
        prefix = kwargs.pop('prefix', self.Meta.model.__name__)
        super(NsForm, self).__init__(*args, prefix=prefix, **kwargs)
        self.fields['ns'].queryset = Domain.objects.exclude(interface_parent=None)

class DelNsForm(Form):
    ns = forms.ModelMultipleChoiceField(queryset=Ns.objects.all(), label="Enregistrements NS actuels",  widget=forms.CheckboxSelectMultiple)

class TextForm(ModelForm):
    class Meta:
        model = Text
        fields = '__all__'

    def __init__(self, *args, **kwargs):
        prefix = kwargs.pop('prefix', self.Meta.model.__name__)
        super(TextForm, self).__init__(*args, prefix=prefix, **kwargs)

class DelTextForm(Form):
    text = forms.ModelMultipleChoiceField(queryset=Text.objects.all(), label="Enregistrements Text actuels",  widget=forms.CheckboxSelectMultiple)

class NasForm(ModelForm):
    class Meta:
        model = Nas
        fields = '__all__'

    def __init__(self, *args, **kwargs):
        prefix = kwargs.pop('prefix', self.Meta.model.__name__)
        super(NasForm, self).__init__(*args, prefix=prefix, **kwargs)

class DelNasForm(Form):
    nas = forms.ModelMultipleChoiceField(queryset=Nas.objects.all(), label="Enregistrements Nas actuels",  widget=forms.CheckboxSelectMultiple)

class ServiceForm(ModelForm):
    class Meta:
        model = Service
        fields = '__all__'

    def __init__(self, *args, **kwargs):
        prefix = kwargs.pop('prefix', self.Meta.model.__name__)
        super(ServiceForm, self).__init__(*args, prefix=prefix, **kwargs)

    def save(self, commit=True):
        instance = super(ServiceForm, self).save(commit=False)
        if commit:
            instance.save()
        instance.process_link(self.cleaned_data.get('servers'))
        return instance

class DelServiceForm(Form):
    service = forms.ModelMultipleChoiceField(queryset=Service.objects.all(), label="Services actuels",  widget=forms.CheckboxSelectMultiple)

class VlanForm(ModelForm):
    class Meta:
        model = Vlan
        fields = '__all__'

    def __init__(self, *args, **kwargs):
        prefix = kwargs.pop('prefix', self.Meta.model.__name__)
        super(VlanForm, self).__init__(*args, prefix=prefix, **kwargs)

class DelVlanForm(Form):
    vlan = forms.ModelMultipleChoiceField(queryset=Vlan.objects.all(), label="Vlan actuels",  widget=forms.CheckboxSelectMultiple)

class EditOuverturePortConfigForm(ModelForm):
    class Meta:
        model = Interface
        fields = ['port_lists']

    def __init__(self, *args, **kwargs):
        prefix = kwargs.pop('prefix', self.Meta.model.__name__)
        super(EditOuverturePortConfigForm, self).__init__(*args, prefix=prefix, **kwargs)

class EditOuverturePortListForm(ModelForm):
    class Meta:
        model = OuverturePortList
        fields = '__all__'

    def __init__(self, *args, **kwargs):
        prefix = kwargs.pop('prefix', self.Meta.model.__name__)
        super(EditOuverturePortListForm, self).__init__(*args, prefix=prefix, **kwargs)