from flask_wtf import FlaskForm
from wtforms import StringField, PasswordField, BooleanField, SubmitField, ValidationError
from wtforms.validators import DataRequired, Length, Email, EqualTo, Regexp

from app.models import User


class LoginForm(FlaskForm):
    email = StringField('Email', validators=[DataRequired(), Length(1, 64), Email()])
    password = PasswordField('Password', validators=[DataRequired()])
    remember_me = BooleanField('Keep me logged in')
    submit = SubmitField('Log In')


class RegistrationForm(FlaskForm):
    email = StringField('Email', validators=[DataRequired(), Length(1, 64), Email()])
    username = StringField('Username', validators=[DataRequired(), Regexp('^[A-Za-z][A-Za-z0-9_.]*$', 0, 'Usernames must have only letters, numbers, dots or underscors')])
    password = PasswordField('Password', validators=[DataRequired(), EqualTo('password2', message='Passwords must match.')])
    password2 = PasswordField('Confirm Password', validators=[DataRequired()])
    submit = SubmitField('Register')


    def validate_email(self, field):
        if User.query.filter_by(email=field.data).first():
            raise ValidationError('Email already registered')

    def validate_username(self, field):
        if User.query.filter_by(username=field.data).first():
            raise ValidationError('Username already in use')