move blueprints in dedicated folder

app/blueprints/auth/forms.py

@@ -0,0 +1,108 @@
+from flask_wtf import FlaskForm
+from wtforms import (
+    BooleanField,
+    PasswordField,
+    StringField,
+    SubmitField,
+    ValidationError
+)
+from wtforms.validators import InputRequired, Email, EqualTo, Length, Regexp
+from app.models import User
+
+
+class RegistrationForm(FlaskForm):
+    email = StringField(
+        'Email',
+        validators=[InputRequired(), Email(), Length(max=254)]
+    )
+    username = StringField(
+        'Username',
+        validators=[
+            InputRequired(),
+            Length(max=64),
+            Regexp(
+                User.username_pattern,
+                message=(
+                    'Usernames must have only letters, numbers, dots or '
+                    'underscores'
+                )
+            )
+       ]
+    )
+    password = PasswordField(
+        'Password',
+        validators=[
+            InputRequired(),
+            EqualTo('password_2', message='Passwords must match')
+        ]
+    )
+    password_2 = PasswordField(
+        'Password confirmation',
+        validators=[
+            InputRequired(),
+            EqualTo('password', message='Passwords must match')
+        ]
+    )
+    terms_of_use_accepted = BooleanField(
+        'I have read and accept the terms of use',
+        validators=[InputRequired()]
+    )
+    submit = SubmitField()
+
+    def __init__(self, *args, **kwargs):
+        if 'prefix' not in kwargs:
+            kwargs['prefix'] = 'registration-form'
+        super().__init__(*args, **kwargs)
+
+    def validate_email(self, field):
+        if User.query.filter_by(email=field.data.lower()).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')
+
+
+class LoginForm(FlaskForm):
+    user = StringField('Email or username', validators=[InputRequired()])
+    password = PasswordField('Password', validators=[InputRequired()])
+    remember_me = BooleanField('Keep me logged in')
+    submit = SubmitField()
+
+    def __init__(self, *args, **kwargs):
+        if 'prefix' not in kwargs:
+            kwargs['prefix'] = 'login-form'
+        super().__init__(*args, **kwargs)
+
+
+class ResetPasswordRequestForm(FlaskForm):
+    email = StringField('Email', validators=[InputRequired(), Email()])
+    submit = SubmitField()
+
+    def __init__(self, *args, **kwargs):
+        if 'prefix' not in kwargs:
+            kwargs['prefix'] = 'reset-password-request-form'
+        super().__init__(*args, **kwargs)
+
+
+class ResetPasswordForm(FlaskForm):
+    password = PasswordField(
+        'New password',
+        validators=[
+            InputRequired(),
+            EqualTo('password_2', message='Passwords must match')
+        ]
+    )
+    password_2 = PasswordField(
+        'New password confirmation',
+        validators=[
+            InputRequired(),
+            EqualTo('password', message='Passwords must match')
+        ]
+    )
+    submit = SubmitField()
+
+    def __init__(self, *args, **kwargs):
+        if 'prefix' not in kwargs:
+            kwargs['prefix'] = 'reset-password-form'
+        super().__init__(*args, **kwargs)