Account deletion (#3728)

* Add form for account deletion

* If avatar or header are gone from source, remove them

* Add option to have SuspendAccountService remove user record, add tests

* Exclude suspended accounts from search

app/controllers/settings/deletes_controller.rb

+# frozen_string_literal: true
+
+class Settings::DeletesController < ApplicationController
+  layout 'admin'
+
+  before_action :authenticate_user!
+
+  def show
+    @confirmation = Form::DeleteConfirmation.new
+  end
+
+  def destroy
+    if current_user.valid_password?(delete_params[:password])
+      Admin::SuspensionWorker.perform_async(current_user.account_id, true)
+      sign_out
+      redirect_to new_user_session_path, notice: I18n.t('deletes.success_msg')
+    else
+      redirect_to settings_delete_path, alert: I18n.t('deletes.bad_password_msg')
+    end
+  end
+
+  private
+
+  def delete_params
+    params.permit(:password)
+  end
+end

app/javascript/styles/admin.scss

@@ -96,6 +96,13 @@
       margin-bottom: 40px;
     }
 
+    h6 {
+      font-size: 16px;
+      color: $ui-primary-color;
+      line-height: 28px;
+      font-weight: 400;
+    }
+
     & > p {
       font-size: 14px;
       line-height: 18px;
@@ -114,6 +121,14 @@
       background: transparent;
       border-bottom: 1px solid $ui-base-color;
     }
+
+    .muted-hint {
+      color: lighten($ui-base-color, 27%);
+
+      a {
+        color: $ui-primary-color;
+      }
+    }
   }
 
   .simple_form {

app/javascript/styles/forms.scss

@@ -303,7 +303,10 @@ code {
       font-weight: 500;
     }
   }
+}
 
+.simple_form,
+.table-form {
   .warning {
     max-width: 400px;
     box-sizing: border-box;

app/models/account.rb

@@ -177,6 +177,7 @@ class Account < ApplicationRecord
           account_id IN (SELECT * FROM first_degree)
           AND target_account_id NOT IN (SELECT * FROM first_degree)
           AND target_account_id NOT IN (:excluded_account_ids)
+          AND accounts.suspended = false
         GROUP BY target_account_id, accounts.id
         ORDER BY count(account_id) DESC
         OFFSET :offset
@@ -199,6 +200,7 @@ class Account < ApplicationRecord
           ts_rank_cd(#{textsearch}, #{query}, 32) AS rank
         FROM accounts
         WHERE #{query} @@ #{textsearch}
+          AND accounts.suspended = false
         ORDER BY rank DESC
         LIMIT ?
       SQL
@@ -216,6 +218,7 @@ class Account < ApplicationRecord
         FROM accounts
         LEFT OUTER JOIN follows AS f ON (accounts.id = f.account_id AND f.target_account_id = ?) OR (accounts.id = f.target_account_id AND f.account_id = ?)
         WHERE #{query} @@ #{textsearch}
+          AND accounts.suspended = false
         GROUP BY accounts.id
         ORDER BY rank DESC
         LIMIT ?

app/models/form/delete_confirmation.rb

+# frozen_string_literal: true
+
+class Form::DeleteConfirmation
+  include ActiveModel::Model
+
+  attr_accessor :password
+end

app/services/suspend_account_service.rb

 # frozen_string_literal: true
 
 class SuspendAccountService < BaseService
-  def call(account)
+  def call(account, remove_user = false)
     @account = account
 
+    purge_user if remove_user
     purge_content
     purge_profile
     unsubscribe_push_subscribers
@@ -11,6 +12,10 @@ class SuspendAccountService < BaseService
 
   private
 
+  def purge_user
+    @account.user.destroy
+  end
+
   def purge_content
     @account.statuses.reorder(nil).find_each do |status|
       # This federates out deletes to previous followers

app/services/update_remote_profile_service.rb

@@ -27,8 +27,19 @@ class UpdateRemoteProfileService < BaseService
     account.locked       = remote_profile.locked?
 
     if !account.suspended? && !DomainBlock.find_by(domain: account.domain)&.reject_media?
-      account.avatar_remote_url = remote_profile.avatar if remote_profile.avatar.present?
-      account.header_remote_url = remote_profile.header if remote_profile.header.present?
+      if remote_profile.avatar.present?
+        account.avatar_remote_url = remote_profile.avatar
+      else
+        account.avatar_remote_url = ''
+        account.avatar.destroy
+      end
+
+      if remote_profile.header.present?
+        account.header_remote_url = remote_profile.header
+      else
+        account.header_remote_url = ''
+        account.header.destroy
+      end
     end
   end
 end

app/views/auth/registrations/edit.html.haml

@@ -11,3 +11,8 @@
 
   .actions
     = f.button :button, t('generic.save_changes'), type: :submit
+
+%hr/
+
+%h6= t('auth.delete_account')
+%p.muted-hint= t('auth.delete_account_html', path: settings_delete_path)

app/views/settings/deletes/show.html.haml

+- content_for :page_title do
+  = t('settings.delete')
+
+= simple_form_for @confirmation, url: settings_delete_path, method: :delete do |f|
+  .warning
+    %strong
+      = fa_icon('warning')
+      = t('deletes.warning_title')
+    = t('deletes.warning_html')
+
+  %p.hint= t('deletes.description_html')
+
+  = f.input :password, autocomplete: 'off', placeholder: t('simple_form.labels.defaults.current_password'), input_html: { 'aria-label' => t('simple_form.labels.defaults.current_password') }, hint: t('deletes.confirm_password')
+
+  .actions
+    = f.button :button, t('deletes.proceed'), type: :submit, class: 'negative'

app/workers/admin/suspension_worker.rb

@@ -5,7 +5,7 @@ class Admin::SuspensionWorker
 
   sidekiq_options queue: 'pull'
 
-  def perform(account_id)
-    SuspendAccountService.new.call(Account.find(account_id))
+  def perform(account_id, remove_user = false)
+    SuspendAccountService.new.call(Account.find(account_id), remove_user)
   end
 end

config/locales/en.yml

@@ -201,6 +201,8 @@ en:
     invalid_url: The provided URL is invalid
   auth:
     change_password: Credentials
+    delete_account: Delete account
+    delete_account_html: If you wish to delete your account, you can <a href="%{path}">proceed here</a>. You will be asked for confirmation.
     didnt_get_confirmation: Didn't receive confirmation instructions?
     forgot_password: Forgot your password?
     login: Log in
@@ -228,6 +230,14 @@ en:
       x_minutes: "%{count}m"
       x_months: "%{count}mo"
       x_seconds: "%{count}s"
+  deletes:
+    bad_password_msg: Nice try, hackers! Incorrect password
+    confirm_password: Enter your current password to verify your identity
+    description_html: This will <strong>permanently, irreversibly</strong> remove content from your account and deactivate it. Your username will remain reserved to prevent future impersonations.
+    proceed: Delete account
+    success_msg: Your account was successfully deleted
+    warning_html: Only deletion of content from this particular instance is guaranteed. Content that has been widely shared is likely to leave traces. Offline servers and servers that have unsubscribed from your updates will not update their databases.
+    warning_title: Disseminated content availability
   errors:
     '403': You don't have permission to view this page.
     '404': The page you were looking for doesn't exist.
@@ -313,6 +323,7 @@ en:
   settings:
     authorized_apps: Authorized apps
     back: Back to Mastodon
+    delete: Account deletion
     edit_profile: Edit profile
     export: Data export
     followers: Authorized followers

config/locales/simple_form.ru.yml

@@ -41,8 +41,8 @@ ru:
         password: Пароль
         setting_auto_play_gif: Автоматически проигрывать анимированные GIF
         setting_boost_modal: Показывать диалог подтверждения перед продвижением
-        setting_delete_modal: Показывать диалог подтверждения перед удалением
         setting_default_privacy: Видимость постов
+        setting_delete_modal: Показывать диалог подтверждения перед удалением
         severity: Строгость
         type: Тип импорта
         username: Имя пользователя

config/navigation.rb

@@ -7,7 +7,7 @@ SimpleNavigation::Configuration.run do |navigation|
     primary.item :settings, safe_join([fa_icon('cog fw'), t('settings.settings')]), settings_profile_url do |settings|
       settings.item :profile, safe_join([fa_icon('user fw'), t('settings.edit_profile')]), settings_profile_url
       settings.item :preferences, safe_join([fa_icon('sliders fw'), t('settings.preferences')]), settings_preferences_url
-      settings.item :password, safe_join([fa_icon('cog fw'), t('auth.change_password')]), edit_user_registration_url
+      settings.item :password, safe_join([fa_icon('cog fw'), t('auth.change_password')]), edit_user_registration_url, highlights_on: %r{/auth/edit|/settings/delete}
       settings.item :two_factor_authentication, safe_join([fa_icon('mobile fw'), t('settings.two_factor_authentication')]), settings_two_factor_authentication_url, highlights_on: %r{/settings/two_factor_authentication}
       settings.item :import, safe_join([fa_icon('cloud-upload fw'), t('settings.import')]), settings_import_url
       settings.item :export, safe_join([fa_icon('cloud-download fw'), t('settings.export')]), settings_export_url

config/routes.rb

@@ -66,6 +66,7 @@ Rails.application.routes.draw do
     end
 
     resource :follower_domains, only: [:show, :update]
+    resource :delete, only: [:show, :destroy]
   end
 
   resources :media, only: [:show]

spec/controllers/settings/deletes_controller_spec.rb

+require 'rails_helper'
+
+describe Settings::DeletesController do
+  render_views
+
+  describe 'GET #show' do
+    context 'when signed in' do
+      let(:user) { Fabricate(:user) }
+
+      before do
+        sign_in user, scope: :user
+      end
+
+      it 'renders confirmation page' do
+        get :show
+        expect(response).to have_http_status(:success)
+      end
+    end
+
+    context 'when not signed in' do
+      it 'redirects' do
+        get :show
+        expect(response).to redirect_to '/auth/sign_in'
+      end
+    end
+  end
+
+  describe 'DELETE #destroy' do
+    context 'when signed in' do
+      let(:user) { Fabricate(:user, password: 'petsmoldoggos') }
+
+      before do
+        sign_in user, scope: :user
+      end
+
+      context 'with correct password' do
+        before do
+          delete :destroy, params: { password: 'petsmoldoggos' }
+        end
+
+        it 'redirects to sign in page' do
+          expect(response).to redirect_to '/auth/sign_in'
+        end
+
+        it 'removes user record' do
+          expect(User.find_by(id: user.id)).to be_nil
+        end
+
+        it 'marks account as suspended' do
+          expect(user.account.reload).to be_suspended
+        end
+      end
+
+      context 'with incorrect password' do
+        before do
+          delete :destroy, params: { password: 'blaze420' }
+        end
+
+        it 'redirects back to confirmation page' do
+          expect(response).to redirect_to settings_delete_path
+        end
+      end
+    end
+
+    context 'when not signed in' do
+      it 'redirects' do
+        delete :destroy
+        expect(response).to redirect_to '/auth/sign_in'
+      end
+    end
+  end
+end