from flask_wtf import FlaskForm
from wtforms import StringField, DateTimeField, BooleanField, SubmitField
from wtforms.validators import DataRequired, ValidationError
from datetime import datetime

class TodoForm(FlaskForm):
    title = StringField("Tytuł", validators=[DataRequired()])
    due_date = DateTimeField("Termin", format="%Y-%m-%d %H:%M:%S", validators=[DataRequired()])
    completed = BooleanField("Wykonane")
    submit = SubmitField("Zapisz")

    def validate_due_date(form, field):
        if field.data <= datetime.now():
            raise ValidationError("Data i czas muszą być późniejsze niż teraz.")