from flask_wtf import FlaskForm
from wtforms import StringField, PasswordField, BooleanField, SubmitField
from wtforms.validators import DataRequired, Length, EqualTo, ValidationError
from app.models.user import User

class LoginForm(FlaskForm):
    username = StringField('Username', validators=[DataRequired()])
    password = PasswordField('Password', validators=[DataRequired()])
    remember_me = BooleanField('Remember Me')
    submit = SubmitField('Sign In')

class SignupForm(FlaskForm):
    username = StringField('Username', validators=[DataRequired(), Length(min=3, max=64)])
    password = PasswordField('Password', validators=[DataRequired(), Length(min=8)])
    password2 = PasswordField('Repeat Password', validators=[DataRequired(), EqualTo('password')])
    submit = SubmitField('Register')
    
    def validate_username(self, username):
        user = User.query.filter_by(username=username.data).first()
        if user is not None:
            raise ValidationError('Please use a different username.')