text: # -*- coding: utf-8 -*-
  """
      :author: Grey Li (李辉)
      :url: http://greyli.com
      :copyright: © 2018 Grey Li <withlihui@gmail.com>
      :license: MIT, see LICENSE for more details.
  """
  from flask_login import current_user
  from flask_wtf import FlaskForm
  from flask_wtf.file import FileField, FileAllowed, FileRequired
  from wtforms import StringField, PasswordField, SubmitField, BooleanField, TextAreaField, HiddenField, ValidationError
  from wtforms.validators import DataRequired, Length, Email, EqualTo, Optional, Regexp
  
  from albumy.models import User
  
  
  class EditProfileForm(FlaskForm):
      name = StringField('Name', validators=[DataRequired(), Length(1, 30)])
      username = StringField('Username', validators=[DataRequired(), Length(1, 20),
                                                     Regexp('^[a-zA-Z0-9]*$',
                                                            message='The username should contain only a-z, A-Z and 0-9.')])
      website = StringField('Website', validators=[Optional(), Length(0, 255)])
      location = StringField('City', validators=[Optional(), Length(0, 50)])
      bio = TextAreaField('Bio', validators=[Optional(), Length(0, 120)])
      submit = SubmitField()
  
      def validate_username(self, field):
          if field.data != current_user.username and User.query.filter_by(username=field.data).first():
              raise ValidationError('The username is already in use.')
  
  
  class UploadAvatarForm(FlaskForm):
      image = FileField('Upload', validators=[
          FileRequired(),
          FileAllowed(['jpg', 'png'], 'The file format should be .jpg or .png.')
      ])
      submit = SubmitField()
  
  
  class CropAvatarForm(FlaskForm):
      x = HiddenField()
      y = HiddenField()
      w = HiddenField()
      h = HiddenField()
      submit = SubmitField('Crop and Update')
  
  
  class ChangeEmailForm(FlaskForm):
      email = StringField('New Email', validators=[DataRequired(), Length(1, 254), Email()])
      submit = SubmitField()
  
      def validate_email(self, field):
          if User.query.filter_by(email=field.data.lower()).first():
              raise ValidationError('The email is already in use.')
  
  
  class ChangePasswordForm(FlaskForm):
      old_password = PasswordField('Old Password', validators=[DataRequired()])
      password = PasswordField('New Password', validators=[
          DataRequired(), Length(8, 128), EqualTo('password2')])
      password2 = PasswordField('Confirm Password', validators=[DataRequired()])
      submit = SubmitField()
  
  
  class NotificationSettingForm(FlaskForm):
      receive_comment_notification = BooleanField('New comment')
      receive_follow_notification = BooleanField('New follower')
      receive_collect_notification = BooleanField('New collector')
      submit = SubmitField()
  
  
  class PrivacySettingForm(FlaskForm):
      public_collections = BooleanField('Public my collection')
      submit = SubmitField()
  
  
  class DeleteAccountForm(FlaskForm):
      username = StringField('Username', validators=[DataRequired(), Length(1, 20)])
      submit = SubmitField()
  
      def validate_username(self, field):
          if field.data != current_user.username:
              raise ValidationError('Wrong username.')
  