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


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

class RegistrationForm(FlaskForm):
    username = StringField('Username', validators=[DataRequired(), Length(min=0, max=64)])
    password = PasswordField('Password', validators=[DataRequired(), Length(min=0, max=128)])
    password2 = PasswordField(
        'Repeat Password', validators=[DataRequired(), EqualTo('password', 'Field must be equal to Password')])
    submit = SubmitField('Register')

    def validate_username(self, username):
        user = User.query.filter_by(name=username.data).first()
        if user is not None:
            raise ValidationError('Please use a different username.')

class ChangePasswordForm(FlaskForm):
    old_password = PasswordField('Old Password',
                                 validators=[DataRequired(), Length(min=0, max=128)])
    new_password = PasswordField('New Password',
                                 validators=[DataRequired(), Length(min=0, max=128),
                                 NotEqualTo('old_password', 'Please choose a new password')])
    new_password2 = PasswordField(
        'Repeat New Password', validators=[DataRequired(), EqualTo('new_password', 'Field must be equal to New Password')])
    submit = SubmitField('Apply')

class SetPasswordForm(FlaskForm):
    new_password = PasswordField('New Password', validators=[DataRequired(),
                                                             Length(min=0, max=128)])
    new_password2 = PasswordField(
        'Repeat New Password', validators=[DataRequired(), EqualTo('new_password', 'Field must be equal to New Password')])
    submit = SubmitField('Set Password')