from flask_wtf import FlaskForm
from wtforms import StringField, PasswordField, BooleanField, SubmitField
from wtforms.validators import DataRequired, ValidationError, Email, EqualTo
from database.models import User, Device
import email_validator

'''
LoginForm defines the flask form used for the 
email-based login procedure
This Form is based on 'The Flask Mega-Tutorial'
'''
class LoginForm(FlaskForm):
    username = StringField('Username', validators=[DataRequired()])
    password = PasswordField('Password', validators=[DataRequired()])
    remember_me = BooleanField('Remember Me')
    submit = SubmitField('Sign In')

'''
RegiatrationForm validates username, email and pw
This Form is based on 'The Flask mega-Tutorial'
'''

class RegistrationForm(FlaskForm):
    username = StringField('Username', validators=[DataRequired()])
    email = StringField('Email', validators=[DataRequired(), Email()])
    password = PasswordField('Password', validators=[DataRequired()])
    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.')

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

class DeviceForm(FlaskForm):
    deviceName=StringField('New Device ID', validators=[DataRequired()])
    submit = SubmitField('Add New Device')
# 
    def validate_deviceName (self, deviceName):
        device = Device.query.filter_by(deviceName=deviceName.data).first()
        if device is None:
            raise ValidationError('Device not Found')