from django import forms
from django.utils.translation import gettext_lazy as _

from dcim.choices import CableTypeChoices, DeviceFaceChoices, LinkStatusChoices, RackAirflowChoices, \
    RackFormFactorChoices, RackWidthChoices
from dcim.models import DeviceRole, DeviceType, Location, Platform, Rack, RackRole, RackType, Site
from netbox.forms import NetBoxModelBulkEditForm, NetBoxModelFilterSetForm, NetBoxModelForm, NetBoxModelImportForm
from tenancy.models import Tenant, TenantGroup
from utilities.forms.fields import (
    CommentField, CSVChoiceField, CSVModelChoiceField, DynamicModelChoiceField, DynamicModelMultipleChoiceField,
    TagFilterField,
)
from utilities.forms.rendering import FieldSet
from utilities.forms.widgets import BulkEditNullBooleanSelect

from .choices import ConceptComponentTypeChoices, ConceptDeviceStatusChoices, ConceptStatusChoices, \
    WidthFractionChoices
from .models import ConceptCable, ConceptComponent, ConceptDevice, RackConcept

__all__ = (
    'ConceptCableForm',
    'ConceptCableFilterForm',
    'ConceptComponentForm',
    'ConceptComponentFilterForm',
    'ConceptDeployForm',
    'ConceptDeviceBulkEditForm',
    'ConceptDeviceFilterForm',
    'ConceptDeviceForm',
    'ConceptDeviceImportForm',
    'MergeConceptsForm',
    'MergeRacksForm',
    'RackConceptBulkEditForm',
    'RackConceptCloneForm',
    'RackConceptFilterForm',
    'RackConceptForm',
    'RackConceptImportForm',
    'RackCopyForm',
)


class RackConceptForm(NetBoxModelForm):
    tenant_group = DynamicModelChoiceField(
        queryset=TenantGroup.objects.all(),
        required=False,
        initial_params={'tenants': '$tenant'},
        label=_('Tenant group')
    )
    tenant = DynamicModelChoiceField(
        queryset=Tenant.objects.all(),
        required=False,
        query_params={'group_id': '$tenant_group'},
        label=_('Tenant')
    )
    rack_type = DynamicModelChoiceField(
        queryset=RackType.objects.all(),
        required=False,
        label=_('Rack type')
    )
    rack_role = DynamicModelChoiceField(
        queryset=RackRole.objects.all(),
        required=False,
        label=_('Rack role')
    )
    default_site = DynamicModelChoiceField(
        queryset=Site.objects.all(),
        required=False,
        label=_('Default site')
    )
    default_location = DynamicModelChoiceField(
        queryset=Location.objects.all(),
        required=False,
        query_params={'site_id': '$default_site'},
        label=_('Default location')
    )
    comments = CommentField()

    fieldsets = (
        FieldSet('name', 'status', 'description', 'tags', name=_('Concept')),
        FieldSet('tenant_group', 'tenant', name=_('Tenancy')),
        FieldSet(
            'rack_type', 'form_factor', 'width', 'u_height', 'starting_unit', 'desc_units', 'airflow',
            name=_('Geometry')
        ),
        FieldSet(
            'outer_width', 'outer_height', 'outer_depth', 'outer_unit', 'mounting_depth', 'max_weight',
            name=_('Dimensions')
        ),
        FieldSet('default_site', 'default_location', 'rack_role', name=_('Deployment defaults')),
    )

    class Meta:
        model = RackConcept
        fields = (
            'name', 'status', 'description', 'tenant_group', 'tenant', 'rack_type', 'form_factor', 'width',
            'u_height', 'starting_unit', 'desc_units', 'airflow', 'outer_width', 'outer_height', 'outer_depth',
            'outer_unit', 'mounting_depth', 'max_weight', 'default_site', 'default_location', 'rack_role',
            'comments', 'tags',
        )


class RackConceptFilterForm(NetBoxModelFilterSetForm):
    model = RackConcept

    status = forms.MultipleChoiceField(
        choices=ConceptStatusChoices,
        required=False
    )
    tenant_group_id = DynamicModelMultipleChoiceField(
        queryset=TenantGroup.objects.all(),
        required=False,
        label=_('Tenant group')
    )
    tenant_id = DynamicModelMultipleChoiceField(
        queryset=Tenant.objects.all(),
        required=False,
        label=_('Tenant')
    )
    width = forms.MultipleChoiceField(
        choices=RackWidthChoices,
        required=False
    )
    form_factor = forms.MultipleChoiceField(
        choices=RackFormFactorChoices,
        required=False
    )
    tag = TagFilterField(model)

    fieldsets = (
        FieldSet('q', 'filter_id', 'tag'),
        FieldSet('status', 'width', 'form_factor', name=_('Attributes')),
        FieldSet('tenant_group_id', 'tenant_id', name=_('Tenancy')),
    )


class RackConceptBulkEditForm(NetBoxModelBulkEditForm):
    model = RackConcept

    status = forms.ChoiceField(choices=ConceptStatusChoices, required=False)
    tenant_group = DynamicModelChoiceField(queryset=TenantGroup.objects.all(), required=False)
    tenant = DynamicModelChoiceField(
        queryset=Tenant.objects.all(),
        required=False,
        query_params={'group_id': '$tenant_group'}
    )
    description = forms.CharField(max_length=200, required=False)
    comments = CommentField()

    nullable_fields = ('tenant_group', 'tenant', 'description', 'comments')

    fieldsets = (
        FieldSet('status', 'description', name=_('Concept')),
        FieldSet('tenant_group', 'tenant', name=_('Tenancy')),
    )


class RackConceptImportForm(NetBoxModelImportForm):
    status = CSVChoiceField(choices=ConceptStatusChoices, required=False)
    tenant = CSVModelChoiceField(
        queryset=Tenant.objects.all(),
        to_field_name='name',
        required=False
    )

    class Meta:
        model = RackConcept
        fields = (
            'name', 'status', 'description', 'tenant', 'form_factor', 'width', 'u_height', 'starting_unit',
            'desc_units', 'comments', 'tags',
        )


class ConceptDeviceForm(NetBoxModelForm):
    concept = DynamicModelChoiceField(
        queryset=RackConcept.objects.all(),
        label=_('Rack concept')
    )
    device_type = DynamicModelChoiceField(
        queryset=DeviceType.objects.all(),
        required=False,
        label=_('Device type')
    )
    role = DynamicModelChoiceField(
        queryset=DeviceRole.objects.all(),
        required=False,
        label=_('Role')
    )
    platform = DynamicModelChoiceField(
        queryset=Platform.objects.all(),
        required=False,
        label=_('Platform')
    )
    tenant = DynamicModelChoiceField(
        queryset=Tenant.objects.all(),
        required=False,
        label=_('Tenant')
    )
    comments = CommentField()

    fieldsets = (
        FieldSet('concept', 'name', 'label', 'status', 'description', 'tags', name=_('Planned device')),
        FieldSet('device_type', 'role', 'platform', 'serial', name=_('Hardware')),
        FieldSet('position', 'face', 'width_fraction', 'horizontal_position', name=_('Placement')),
        FieldSet('u_height', 'is_full_depth', name=_('Overrides')),
        FieldSet('tenant', name=_('Tenancy')),
    )

    class Meta:
        model = ConceptDevice
        fields = (
            'concept', 'name', 'label', 'status', 'description', 'device_type', 'role', 'platform', 'serial',
            'position', 'face', 'width_fraction', 'horizontal_position', 'u_height', 'is_full_depth', 'tenant',
            'comments', 'tags',
        )


class ConceptDeviceFilterForm(NetBoxModelFilterSetForm):
    model = ConceptDevice

    concept_id = DynamicModelMultipleChoiceField(
        queryset=RackConcept.objects.all(),
        required=False,
        label=_('Rack concept')
    )
    status = forms.MultipleChoiceField(choices=ConceptDeviceStatusChoices, required=False)
    device_type_id = DynamicModelMultipleChoiceField(
        queryset=DeviceType.objects.all(),
        required=False,
        label=_('Device type')
    )
    role_id = DynamicModelMultipleChoiceField(
        queryset=DeviceRole.objects.all(),
        required=False,
        label=_('Role')
    )
    face = forms.MultipleChoiceField(choices=DeviceFaceChoices, required=False)
    tag = TagFilterField(model)

    fieldsets = (
        FieldSet('q', 'filter_id', 'tag'),
        FieldSet('concept_id', 'status', 'face', name=_('Placement')),
        FieldSet('device_type_id', 'role_id', name=_('Hardware')),
    )


class ConceptDeviceBulkEditForm(NetBoxModelBulkEditForm):
    model = ConceptDevice

    status = forms.ChoiceField(choices=ConceptDeviceStatusChoices, required=False)
    role = DynamicModelChoiceField(queryset=DeviceRole.objects.all(), required=False)
    platform = DynamicModelChoiceField(queryset=Platform.objects.all(), required=False)
    tenant = DynamicModelChoiceField(queryset=Tenant.objects.all(), required=False)
    face = forms.ChoiceField(choices=DeviceFaceChoices, required=False)
    width_fraction = forms.ChoiceField(choices=WidthFractionChoices, required=False)
    is_full_depth = forms.NullBooleanField(required=False, widget=BulkEditNullBooleanSelect())
    description = forms.CharField(max_length=200, required=False)

    nullable_fields = ('role', 'platform', 'tenant', 'description', 'is_full_depth')

    fieldsets = (
        FieldSet('status', 'role', 'platform', 'description', name=_('Planned device')),
        FieldSet('face', 'width_fraction', 'is_full_depth', name=_('Placement')),
        FieldSet('tenant', name=_('Tenancy')),
    )


class ConceptDeviceImportForm(NetBoxModelImportForm):
    concept = CSVModelChoiceField(
        queryset=RackConcept.objects.all(),
        to_field_name='name'
    )
    device_type = CSVModelChoiceField(
        queryset=DeviceType.objects.all(),
        to_field_name='model',
        required=False
    )
    role = CSVModelChoiceField(
        queryset=DeviceRole.objects.all(),
        to_field_name='name',
        required=False
    )
    status = CSVChoiceField(choices=ConceptDeviceStatusChoices, required=False)
    face = CSVChoiceField(choices=DeviceFaceChoices, required=False)

    class Meta:
        model = ConceptDevice
        fields = (
            'concept', 'name', 'label', 'status', 'device_type', 'role', 'position', 'face', 'width_fraction',
            'horizontal_position', 'u_height', 'is_full_depth', 'description', 'tags',
        )


#
# Action forms
#

class RackCopyForm(forms.Form):
    """Copy an existing dcim.Rack into a new blueprint."""
    name = forms.CharField(
        label=_('Concept name'),
        max_length=100
    )
    status = forms.ChoiceField(
        choices=ConceptStatusChoices,
        initial=ConceptStatusChoices.STATUS_DRAFT
    )
    tenant_group = DynamicModelChoiceField(
        queryset=TenantGroup.objects.all(),
        required=False,
        label=_('Tenant group')
    )
    tenant = DynamicModelChoiceField(
        queryset=Tenant.objects.all(),
        required=False,
        query_params={'group_id': '$tenant_group'},
        label=_('Tenant')
    )
    include_devices = forms.BooleanField(
        required=False,
        initial=True,
        label=_('Copy installed devices'),
        help_text=_('Snapshot every device currently mounted in the rack')
    )
    include_device_names = forms.BooleanField(
        required=False,
        initial=True,
        label=_('Keep device names'),
        help_text=_('Unchecked, only the device type and position are copied')
    )
    override_width = forms.ChoiceField(
        choices=(('', _('Same as rack')),) + tuple(RackWidthChoices),
        required=False,
        label=_('Width')
    )
    override_u_height = forms.IntegerField(
        required=False,
        min_value=1,
        max_value=100,
        label=_('Height (U)'),
        help_text=_('Leave empty to keep the rack\'s own height. Devices that no longer fit are left out.')
    )
    override_starting_unit = forms.IntegerField(
        required=False,
        min_value=1,
        label=_('Starting unit'),
        help_text=_('Leave empty to keep the rack\'s own starting unit')
    )
    description = forms.CharField(max_length=200, required=False)

    fieldsets = (
        FieldSet('name', 'status', 'description', name=_('Concept')),
        FieldSet('tenant_group', 'tenant', name=_('Tenancy')),
        FieldSet('include_devices', 'include_device_names', name=_('Content')),
        FieldSet(
            'override_width', 'override_u_height', 'override_starting_unit',
            name=_('Concept size (optional)')
        ),
    )

    def clean_override_width(self):
        value = self.cleaned_data['override_width']
        return int(value) if value else None


class MergeConceptsForm(forms.Form):
    """Stack two blueprints (e.g. two half-height racks) into one taller concept."""
    name = forms.CharField(
        label=_('New concept name'),
        max_length=100
    )
    status = forms.ChoiceField(
        choices=ConceptStatusChoices,
        initial=ConceptStatusChoices.STATUS_DRAFT
    )
    tenant_group = DynamicModelChoiceField(
        queryset=TenantGroup.objects.all(),
        required=False,
        label=_('Tenant group')
    )
    tenant = DynamicModelChoiceField(
        queryset=Tenant.objects.all(),
        required=False,
        query_params={'group_id': '$tenant_group'},
        label=_('Tenant')
    )
    concept_bottom = DynamicModelChoiceField(
        queryset=RackConcept.objects.all(),
        label=_('Bottom concept'),
        help_text=_('Keeps its planned positions unchanged')
    )
    concept_top = DynamicModelChoiceField(
        queryset=RackConcept.objects.all(),
        label=_('Top concept'),
        help_text=_("Its devices are shifted up by the bottom concept's height")
    )
    width = forms.ChoiceField(
        choices=RackWidthChoices,
        initial=RackWidthChoices.WIDTH_19IN,
        label=_('Width of the combined rack')
    )
    u_height = forms.IntegerField(
        required=False,
        min_value=1,
        max_value=100,
        label=_('Height (U)'),
        help_text=_('Leave empty to use the sum of both heights')
    )
    starting_unit = forms.IntegerField(
        initial=1,
        min_value=1,
        label=_('Starting unit')
    )
    description = forms.CharField(max_length=200, required=False)

    fieldsets = (
        FieldSet('name', 'status', 'description', name=_('Concept')),
        FieldSet('tenant_group', 'tenant', name=_('Tenancy')),
        FieldSet('concept_bottom', 'concept_top', name=_('Sources')),
        FieldSet('width', 'u_height', 'starting_unit', name=_('Combined size')),
    )

    def clean_width(self):
        return int(self.cleaned_data['width'])

    def clean(self):
        cleaned = super().clean()
        bottom, top = cleaned.get('concept_bottom'), cleaned.get('concept_top')
        if bottom and top and bottom.pk == top.pk:
            raise forms.ValidationError(_('Choose two different concepts to merge.'))
        return cleaned


class MergeRacksForm(forms.Form):
    """Combine two existing racks directly into one new, stacked blueprint."""
    name = forms.CharField(
        label=_('Concept name'),
        max_length=100
    )
    status = forms.ChoiceField(
        choices=ConceptStatusChoices,
        initial=ConceptStatusChoices.STATUS_DRAFT
    )
    tenant_group = DynamicModelChoiceField(
        queryset=TenantGroup.objects.all(),
        required=False,
        label=_('Tenant group')
    )
    tenant = DynamicModelChoiceField(
        queryset=Tenant.objects.all(),
        required=False,
        query_params={'group_id': '$tenant_group'},
        label=_('Tenant')
    )
    rack_bottom = DynamicModelChoiceField(
        queryset=Rack.objects.all(),
        label=_('Bottom rack'),
        help_text=_('Keeps its planned positions unchanged')
    )
    rack_top = DynamicModelChoiceField(
        queryset=Rack.objects.all(),
        label=_('Top rack'),
        help_text=_("Its devices are shifted up by the bottom rack's height")
    )
    include_devices = forms.BooleanField(
        required=False,
        initial=True,
        label=_('Copy installed devices')
    )
    include_device_names = forms.BooleanField(
        required=False,
        initial=True,
        label=_('Keep device names')
    )
    width = forms.ChoiceField(
        choices=RackWidthChoices,
        initial=RackWidthChoices.WIDTH_19IN,
        label=_('Width of the combined rack')
    )
    u_height = forms.IntegerField(
        required=False,
        min_value=1,
        max_value=100,
        label=_('Height (U)'),
        help_text=_('Leave empty to use the sum of both heights')
    )
    starting_unit = forms.IntegerField(
        initial=1,
        min_value=1,
        label=_('Starting unit')
    )
    description = forms.CharField(max_length=200, required=False)

    fieldsets = (
        FieldSet('name', 'status', 'description', name=_('Concept')),
        FieldSet('tenant_group', 'tenant', name=_('Tenancy')),
        FieldSet('rack_bottom', 'rack_top', name=_('Sources')),
        FieldSet('include_devices', 'include_device_names', name=_('Content')),
        FieldSet('width', 'u_height', 'starting_unit', name=_('Combined size')),
    )

    def clean_width(self):
        return int(self.cleaned_data['width'])

    def clean(self):
        cleaned = super().clean()
        bottom, top = cleaned.get('rack_bottom'), cleaned.get('rack_top')
        if bottom and top and bottom.pk == top.pk:
            raise forms.ValidationError(_('Choose two different racks to merge.'))
        return cleaned


class RackConceptCloneForm(forms.Form):
    """Duplicate a blueprint, for building variants."""
    name = forms.CharField(
        label=_('New concept name'),
        max_length=100
    )
    status = forms.ChoiceField(
        choices=ConceptStatusChoices,
        initial=ConceptStatusChoices.STATUS_DRAFT
    )
    tenant = DynamicModelChoiceField(
        queryset=Tenant.objects.all(),
        required=False,
        label=_('Tenant')
    )
    include_devices = forms.BooleanField(
        required=False,
        initial=True,
        label=_('Copy planned devices')
    )

    fieldsets = (
        FieldSet('name', 'status', 'tenant', 'include_devices'),
    )


class ConceptDeployForm(forms.Form):
    """Materialise a blueprint as one or more real racks."""
    name_pattern = forms.CharField(
        label=_('Rack name'),
        max_length=100,
        help_text=_('Use {n} for the sequence number, e.g. "DC1-R{n}". Zero-pad with {n:02d}.')
    )
    count = forms.IntegerField(
        label=_('Number of racks'),
        min_value=1,
        max_value=100,
        initial=1
    )
    start_index = forms.IntegerField(
        label=_('First sequence number'),
        initial=1
    )
    site = DynamicModelChoiceField(
        queryset=Site.objects.all(),
        label=_('Site')
    )
    location = DynamicModelChoiceField(
        queryset=Location.objects.all(),
        required=False,
        query_params={'site_id': '$site'},
        label=_('Location')
    )
    tenant = DynamicModelChoiceField(
        queryset=Tenant.objects.all(),
        required=False,
        label=_('Tenant')
    )
    create_devices = forms.BooleanField(
        required=False,
        initial=True,
        label=_('Create devices'),
        help_text=_('Create a real device for every planned device that has a device type and a position')
    )
    device_name_pattern = forms.CharField(
        max_length=100,
        required=False,
        label=_('Device name'),
        help_text=_('Optional. {rack} and {name} are replaced, e.g. "{rack}-{name}". '
                    'Empty keeps the planned name.')
    )
    skip_unnamed_devices = forms.BooleanField(
        required=False,
        initial=True,
        label=_('Skip devices without a name'),
        help_text=_('Unchecked, unnamed planned devices are created as unnamed devices')
    )

    fieldsets = (
        FieldSet('name_pattern', 'count', 'start_index', name=_('Racks')),
        FieldSet('site', 'location', 'tenant', name=_('Placement')),
        FieldSet('create_devices', 'device_name_pattern', 'skip_unnamed_devices', name=_('Devices')),
    )

    def __init__(self, *args, concept=None, **kwargs):
        super().__init__(*args, **kwargs)
        self.concept = concept
        if concept and not self.is_bound:
            self.fields['name_pattern'].initial = concept.name
            if concept.default_site:
                self.fields['site'].initial = concept.default_site.pk
            if concept.default_location:
                self.fields['location'].initial = concept.default_location.pk
            if concept.tenant:
                self.fields['tenant'].initial = concept.tenant.pk

    def clean_name_pattern(self):
        pattern = self.cleaned_data['name_pattern']
        try:
            pattern.format(n=1)
        except (IndexError, KeyError, ValueError) as exc:
            raise forms.ValidationError(
                _('Invalid name pattern: {error}').format(error=exc)
            )
        return pattern

    def clean(self):
        cleaned = super().clean()
        pattern = cleaned.get('name_pattern')
        count = cleaned.get('count')
        start = cleaned.get('start_index')
        site = cleaned.get('site')
        if not (pattern and count and start is not None and site):
            return cleaned

        names = [pattern.format(n=i) for i in range(start, start + count)]
        if len(set(names)) != len(names):
            raise forms.ValidationError({
                'name_pattern': _('The pattern produces duplicate names. Include {n} when creating more than one rack.')
            })
        clashes = Rack.objects.filter(site=site, name__in=names).values_list('name', flat=True)
        if clashes:
            raise forms.ValidationError({
                'name_pattern': _('These racks already exist at {site}: {names}').format(
                    site=site, names=', '.join(sorted(clashes))
                )
            })
        cleaned['rack_names'] = names
        return cleaned


#
# Cabling
#

class ConceptComponentForm(NetBoxModelForm):
    device = DynamicModelChoiceField(
        queryset=ConceptDevice.objects.all(),
        label=_('Concept device')
    )

    fieldsets = (
        FieldSet('device', 'component_type', 'name', 'label', 'description', 'tags', name=_('Component')),
        FieldSet('port_type', 'positions', 'color', name=_('Attributes')),
    )

    class Meta:
        model = ConceptComponent
        fields = (
            'device', 'component_type', 'name', 'label', 'port_type', 'positions', 'color', 'description', 'tags',
        )


class ConceptComponentFilterForm(NetBoxModelFilterSetForm):
    model = ConceptComponent

    device_id = DynamicModelMultipleChoiceField(
        queryset=ConceptDevice.objects.all(),
        required=False,
        label=_('Concept device')
    )
    concept_id = DynamicModelMultipleChoiceField(
        queryset=RackConcept.objects.all(),
        required=False,
        label=_('Rack concept')
    )
    component_type = forms.MultipleChoiceField(choices=ConceptComponentTypeChoices, required=False)
    connected = forms.NullBooleanField(required=False, widget=forms.Select(choices=(
        ('', '---------'), ('true', _('Connected')), ('false', _('Not connected')),
    )))
    tag = TagFilterField(model)

    fieldsets = (
        FieldSet('q', 'filter_id', 'tag'),
        FieldSet('device_id', 'concept_id', 'component_type', 'connected', name=_('Attributes')),
    )


class ConceptCableForm(NetBoxModelForm):
    """
    Mirrors the shape of NetBox's own cable-connect form: pick a device, then a
    component on it, for each end.
    """
    concept = DynamicModelChoiceField(
        queryset=RackConcept.objects.all(),
        label=_('Rack concept'),
        help_text=_('Both ends must belong to devices in this concept')
    )
    termination_a_device = DynamicModelChoiceField(
        queryset=ConceptDevice.objects.all(),
        label=_('Device A'),
        query_params={'concept_id': '$concept'}
    )
    termination_a = DynamicModelChoiceField(
        queryset=ConceptComponent.objects.all(),
        label=_('Component A'),
        query_params={'device_id': '$termination_a_device', 'connected': 'false'}
    )
    termination_b_device = DynamicModelChoiceField(
        queryset=ConceptDevice.objects.all(),
        label=_('Device B'),
        query_params={'concept_id': '$concept'}
    )
    termination_b = DynamicModelChoiceField(
        queryset=ConceptComponent.objects.all(),
        label=_('Component B'),
        query_params={'device_id': '$termination_b_device', 'connected': 'false'}
    )
    comments = CommentField()

    fieldsets = (
        FieldSet('concept', name=_('Scope')),
        FieldSet('termination_a_device', 'termination_a', name=_('Side A')),
        FieldSet('termination_b_device', 'termination_b', name=_('Side B')),
        FieldSet('status', 'type', 'color', 'label', 'description', 'tags', name=_('Cable')),
    )

    class Meta:
        model = ConceptCable
        fields = (
            'termination_a', 'termination_b', 'status', 'type', 'color', 'label', 'description', 'comments', 'tags',
        )

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        # concept/termination_*_device are UI-only helpers for the cascading selects
        # above, not model fields - when editing an existing cable, seed them from the
        # components already chosen so the dropdowns show the right device on load.
        instance = self.instance
        if instance and instance.pk:
            self.fields['concept'].initial = instance.termination_a.device.concept_id
            self.fields['termination_a_device'].initial = instance.termination_a.device_id
            self.fields['termination_b_device'].initial = instance.termination_b.device_id


class ConceptCableFilterForm(NetBoxModelFilterSetForm):
    model = ConceptCable

    concept_id = DynamicModelMultipleChoiceField(
        queryset=RackConcept.objects.all(),
        required=False,
        label=_('Rack concept')
    )
    status = forms.MultipleChoiceField(choices=LinkStatusChoices, required=False)
    type = forms.MultipleChoiceField(choices=CableTypeChoices, required=False)
    tag = TagFilterField(model)

    fieldsets = (
        FieldSet('q', 'filter_id', 'tag'),
        FieldSet('concept_id', 'status', 'type', name=_('Attributes')),
    )