from flask_wtf import FlaskForm

from wtforms import StringField
from wtforms import PasswordField
from wtforms import SubmitField

from wtforms.validators import DataRequired
from wtforms.validators import Length
from wtforms.validators import Email
from wtforms.validators import EqualTo
from wtforms.validators import ValidationError

from core import User



class RegisterForm(FlaskForm):
    username = StringField('Username', validators=[DataRequired(), Length(min=4, max=24)])
    email    = StringField('Email', validators=[DataRequired(), Email()])
    password = PasswordField('Password', validators=[DataRequired(), Length(min=8)])
    confirm_password = PasswordField('Confirm Password',
                                        validators=[DataRequired(), EqualTo('password', message="Passwords must match!")])
    submit   = SubmitField("Sign Up")

    def validate_username(self, username):
        user = User.query.filter_by(username=username.data).first()
        if user:
            raise ValidationError("User exists already! Please use a different name!")


class LoginForm(FlaskForm):
    username = StringField('Username', validators=[DataRequired(), Length(min=4, max=24)])
    password = PasswordField('Password', validators=[DataRequired(), Length(min=8, max=32)])
    submit   = SubmitField("Login")