from flask_wtf import FlaskForm
from flask_wtf.file import FileField, FileAllowed
from wtforms import StringField, SubmitField, BooleanField, URLField, IntegerField, DateField, SelectField
from wtforms.validators import DataRequired, Length, ValidationError
from minibase.blueprints.sensor.models import nbiotDevice
import minibase.blueprints.company.utils as companyUtils
import minibase.blueprints.user.utils as userUtils
import minibase.blueprints.sensor.utils as sensorUtils
from datetime import date

class nbiotDeviceForm(FlaskForm):  # Defines the self class to be used for the user update
    name = StringField('Device Name', validators=[DataRequired(), Length(min=3, max=50)])
    model = StringField('Device Model', validators=[DataRequired(), Length(min=3, max=50)])
    serial_no = StringField('Serial Number', validators=[DataRequired(), Length(min=3, max=50)])
    device_id = StringField('Device Id', validators=[DataRequired(), Length(min=3, max=50)])
    imsi = StringField('Imsi No', validators=[DataRequired(), Length(min=10, max=50)])
    iccid = StringField('Iccid No', validators=[DataRequired(), Length(min=10, max=100)])
    ip = StringField('Ip (ipv4)', validators=[DataRequired(), Length(min=7, max=15)])
    port = StringField('Port', validators=[DataRequired(), Length(min=3, max=10)])
    registration_date = DateField('Registration Date', format='%Y-%m-%d', default=date.today, validators=[DataRequired()])
    activation_date = DateField('Activation Date', format='%Y-%m-%d', default=date.today, validators=[DataRequired()])
    deactivation_date = DateField('Deactivation Date', format='%Y-%m-%d', default=date.today, validators=[DataRequired()])
    device_owner_id = SelectField('Owner', validators=[DataRequired()])
    device_user_id = SelectField('User')
    status_id = SelectField('Status', validators=[DataRequired()])
    type_id = SelectField('Type', validators=[DataRequired()])
    area_id = SelectField('Area', validators=[DataRequired()])
    company_manufacturer_id = SelectField(  'Manufacturer', validators=[DataRequired()], 
                                    render_kw={"custom_option": "search_field",
                                               "query_table": "Companies",
                                               "query_key": "name",
                                               "query_return": "name"
                                                })
    company_owner_id = SelectField('Managed By', validators=[DataRequired()],
                                    render_kw={"custom_option": "search_field",
                                               "query_table": "Companies",
                                               "query_key": "name",
                                               "query_return": "name"
                                                })
    image_file = FileField('Update Sensor Picture', validators=[FileAllowed(['jpg', 'png'])])

    submit = SubmitField()

    def populate_for_updating(self, device):
        self.originalModel = device
        self.submit.label.text = "Update"
        self.device_user_id.choices = [(row.id, row.username) for row in userUtils.queryUserNamesWithDefault(device.device_user_id)]
        self.device_owner_id.choices = [(row.id, row.username) for row in userUtils.queryUserNamesWithDefault(device.device_owner_id)]
        self.company_manufacturer_id.choices = [(row.id, row.name) for row in companyUtils.queryNamesWithDefault(device.company_manufacturer_id)]
        self.company_owner_id.choices = [(row.id, row.name) for row in companyUtils.queryNamesWithDefault(device.company_owner_id)]
        self.status_id.choices = [(row.id, row.name) for row in sensorUtils.queryStatusNamesWithDefault(device.status_id)]
        self.type_id.choices = [(row.id, row.name) for row in sensorUtils.queryTypeNamesWithDefault(device.type_id)]
        self.area_id.choices = [(row.id, row.name) for row in sensorUtils.queryAreaNamesWithDefault(device.area_id)]

    def populate_for_adding(self, device):
        self.originalModel = device
        self.submit.label.text = "Add"

        if self.company_manufacturer_id.data:
            self.company_manufacturer_id.choices = [(row.id, row.name) for row in companyUtils.queryNamesWithDefault(self.company_manufacturer_id.data)]

        self.device_user_id.choices = [(row.id, row.username) for row in userUtils.queryUserNamesWithDefault(device.device_user_id)]
        self.device_owner_id.choices = [(row.id, row.username) for row in userUtils.queryUserNamesWithDefault(device.device_owner_id)]
        self.company_manufacturer_id.choices = [(row.id, row.name) for row in companyUtils.queryNamesWithDefault(device.company_manufacturer_id)]
        self.company_owner_id.choices = [(row.id, row.name) for row in companyUtils.queryNamesWithDefault(device.company_owner_id)]
        self.status_id.choices = [(row.id, row.name) for row in sensorUtils.queryStatusNamesWithDefault(device.status_id)]
        self.type_id.choices = [(row.id, row.name) for row in sensorUtils.queryTypeNamesWithDefault(device.type_id)]
        self.area_id.choices = [(row.id, row.name) for row in sensorUtils.queryAreaNamesWithDefault(device.area_id)]

    #custom validators specific naming convention: validate_<fieldname>. This is how Flask-WTF knows which field the validator is associated with.
    def validate_name(self, input):
        if input.data != self.originalModel.name:
            if (nbiotDevice.query.filter(nbiotDevice.name.ilike(f'%{input.data}%')).first()):
                raise ValidationError('This Name already exists. Please choose a different one.')

    def validate_serial_no(self, input):
        if input.data != self.originalModel.serial_no:
            if (nbiotDevice.query.filter(nbiotDevice.serial_no.ilike(f'%{input.data}%')).first()):
                raise ValidationError('This Serial Number is already registered.')

    def validate_imsi(self, input):
        if input.data != self.originalModel.imsi:
            if (nbiotDevice.query.filter(nbiotDevice.imsi.ilike(f'%{input.data}%')).first()):
                raise ValidationError('This IMSI no is already registered.')

    def validate_iccid(self, input):
        if input.data != self.originalModel.iccid:
            if (nbiotDevice.query.filter(nbiotDevice.iccid.ilike(f'%{input.data}%')).first()):
                raise ValidationError('This ICCID no is already registered.')

    def validate_ip(self, input):
        if input.data != self.originalModel.ip:
            if (nbiotDevice.query.filter(nbiotDevice.ip.ilike(f'%{input.data}%')).first()):
                raise ValidationError('A devie already has this IP')