from flask_wtf import FlaskForm
from wtforms import StringField, SelectField, IntegerField, TextAreaField, SubmitField, DateTimeLocalField
from wtforms.validators import DataRequired, NumberRange, Length, Optional

class ReservationForm(FlaskForm):
    classroom_id = SelectField('Classroom', coerce=int, validators=[DataRequired()])
    commission_id = SelectField('Commission', coerce=int, validators=[DataRequired()])
    start_time = DateTimeLocalField('Start Time', format='%Y-%m-%dT%H:%M', validators=[DataRequired()])
    end_time = DateTimeLocalField('End Time', format='%Y-%m-%dT%H:%M', validators=[DataRequired()])
    purpose = StringField('Purpose', validators=[
        DataRequired(),
        Length(max=500, message='Purpose must be less than 500 characters')
    ])
    expected_attendees = IntegerField('Expected Attendees', validators=[
        DataRequired(),
        NumberRange(min=1, max=200, message='Number of attendees must be between 1 and 200')
    ])
    notes = TextAreaField('Notes', validators=[Optional(), Length(max=1000)])
    submit = SubmitField('Save Reservation')