from flask_wtf import FlaskForm
from wtforms import DateField, IntegerField, DecimalField, SubmitField, TextAreaField
from wtforms.validators import Length

from .checks import *


class CreateServiceForm(FlaskForm):
    date = DateField('Date of Pitstop')
    odometer = IntegerField('Odometer (km)', validators=[odometer_date_check])
    costs = DecimalField('Costs (€, overall)', places=2, validators=[costs_check])
    description = TextAreaField('Description', validators=[Length(1, 4096)])
    submit = SubmitField(label='Do it!')
    pitstops = []

    def set_pitstops(self, pitstops):
        self.pitstops = pitstops

    def preinit_with_data(self):
        if self.date.data:
            self.date.default = self.date.data
        else:
            self.date.default = date.today()

        if self.odometer.data:
            self.odometer.default = self.odometer.data
        elif len(self.pitstops) > 0:
            self.odometer.default = self.pitstops[-1].odometer
        else:
            self.odometer.default = 0

        if self.costs.data:
            self.costs.default = self.costs.data
        else:
            self.costs.default = 0

        if self.description.data:
            self.description.default = self.description.data


class DeleteServiceForm(FlaskForm):
    submit = SubmitField(label='Really delete this service!')


class EditServiceForm(FlaskForm):
    date = DateField('Date of Service')
    odometer = IntegerField('Odometer (km)', validators=[edit_odometer_date_check])
    costs = DecimalField('Costs (€, overall)', places=2, validators=[costs_check])
    description = TextAreaField('Description', validators=[Length(1, 4096)])
    submit = SubmitField(label='Do it!')
    same_odometer_allowed = True
    pitstops = []

    def set_pitstops(self, pitstops):
        self.pitstops = pitstops

    def preinit_with_data(self):
        if self.date.data:
            self.date.default = self.date.data

        if self.odometer.data:
            self.odometer.default = self.odometer.data

        if self.costs.data:
            self.costs.default = self.costs.data

        if self.description.data:
            self.description.default = self.description.data

    def get_hint_messages(self):
        messages = {
            'litres': 'Litres must be higher than 0.01 L.',
            'costs': 'Costs must be higher than 0.01 €.'
        }
        return messages