# models/changeemail_validator.rb:
# Validates email change form submissions.
#
# Copyright (c) 2010 UK Citizens Online Democracy. All rights reserved.
# Email: hello@mysociety.org; WWW: http://www.mysociety.org/

class ChangeEmailValidator
    include ActiveModel::Validations

    attr_accessor :old_email, :new_email, :password, :user_circumstance, :logged_in_user

    validates_presence_of :old_email, :message => N_("Please enter your old email address")
    validates_presence_of :new_email, :message => N_("Please enter your new email address")
    validates_presence_of :password, :message => N_("Please enter your password"), :unless => :changing_email
    validate :password_and_format_of_email

    def initialize(attributes = {})
        attributes.each do |name, value|
            send("#{name}=", value)
        end
    end


    def changing_email
      self.user_circumstance == 'change_email'
    end

    private

    def password_and_format_of_email
        if !self.old_email.blank? && !MySociety::Validate.is_valid_email(self.old_email)
            errors.add(:old_email, _("Old email doesn't look like a valid address"))
        end

        if errors[:old_email].blank?
            if self.old_email.downcase != self.logged_in_user.email.downcase
                errors.add(:old_email, _("Old email address isn't the same as the address of the account you are logged in with"))
            elsif (!self.changing_email) && (!self.logged_in_user.has_this_password?(self.password))
                if errors[:password].blank?
                    errors.add(:password, _("Password is not correct"))
                end
            end
        end

        if !self.new_email.blank? && !MySociety::Validate.is_valid_email(self.new_email)
            errors.add(:new_email, _("New email doesn't look like a valid address"))
        end
    end
end