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# Copyright 2021-2023 H2020 TeraFlow (https://www.teraflow-h2020.eu/)
#
# 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.

# external imports
from flask_wtf import FlaskForm
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from wtforms import StringField, SelectField, TextAreaField, SubmitField, BooleanField, Form
from wtforms.validators import DataRequired, Length, NumberRange, Regexp, ValidationError
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from common.proto.context_pb2 import DeviceOperationalStatusEnum
from webui.utils.form_validators import key_value_validator

class AddDeviceForm(FlaskForm):
    device_id = StringField('ID', 
                           validators=[DataRequired(), Length(min=5)])
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    device_type = SelectField('Type', choices = [])                                                     
    operational_status = SelectField('Operational Status',
                        #    choices=[(-1, 'Select...'), (0, 'Undefined'), (1, 'Disabled'), (2, 'Enabled')],
                           coerce=int,
                           validators=[NumberRange(min=0)])
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    device_drivers_undefined = BooleanField('UNDEFINED')
    device_drivers_openconfig = BooleanField('OPENCONFIG')
    device_drivers_transport_api = BooleanField('TRANSPORT_API')
    device_drivers_p4 = BooleanField('P4')
    device_drivers_ietf_network_topology = BooleanField('IETF_NETWORK_TOPOLOGY')
    device_drivers_onf_tr_352 = BooleanField('ONF_TR_352')
    device_drivers_xr = BooleanField('XR')
    device_config_address = StringField('connect/address',default='127.0.0.1',validators=[DataRequired(), Length(min=5)])
    device_config_port = StringField('connect/port',default='0',validators=[DataRequired(), Length(min=1)])
    device_config_settings = TextAreaField('connect/settings',default='{}',validators=[DataRequired(), Length(min=2)])
    submit = SubmitField('Add')

    def validate_operational_status(form, field):
        if field.data not in DeviceOperationalStatusEnum.DESCRIPTOR.values_by_number:
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            raise ValidationError('The operational status value selected is incorrect!')

class ConfigForm(FlaskForm):
    device_key_config = StringField('Key configuration')
    device_value_config = StringField('Value configuration')    
    submit = SubmitField('Add')


class UpdateDeviceForm(FlaskForm):
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    update_operational_status = SelectField('Operational Status',
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                           choices=[(-1, 'Select...'), (0, 'Undefined'), (1, 'Disabled'), (2, 'Enabled')],
                           coerce=int,
                           validators=[NumberRange(min=0)])
                        
    submit = SubmitField('Update')