authorization routes and logic

app/auth/forms.py

@@ -0,0 +1,29 @@
+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')