Merge pull request 'Fix XMPP API POST request' (#17) from bugfix/faraday_post into master

Reviewed-on: #17

.drone.yml

@@ -0,0 +1,43 @@
+kind: pipeline
+type: docker
+name: CI build
+
+steps:
+  - name: restore-cache
+    image: drillster/drone-volume-cache
+    volumes:
+    - name: cache
+      path: /cache
+    settings:
+      restore: true
+      mount:
+      - vendor
+    when:
+      branch:
+        - master
+  - name: rspec
+    image: guildeducation/rails:2.7.1-12.19.0
+    commands:
+      - bundle install --jobs=3 --retry=3 --deployment
+      - yarn install
+      - bundle exec rspec
+    when:
+      branch:
+        - master
+  - name: rebuild-cache
+    image: drillster/drone-volume-cache
+    volumes:
+    - name: cache
+      path: /cache
+    settings:
+      rebuild: true
+      mount:
+      - vendor
+    when:
+      branch:
+        - master
+
+volumes:
+  - name: cache
+    host:
+      path: /var/lib/drone/tmp

.env.example

@@ -1,8 +1 @@
-LDAP_HOST=192.168.33.10
+EJABBERD_API_URL='https://xmpp.kosmos.org/api'
-LDAP_PORT=389
-#
-# Production LDAP server:
-#
-# LDAP_HOST=ldap.kosmos.org
-# LDAP_PORT=636
-# LDAP_USE_TLS=true

.env.production

@@ -0,0 +1 @@
+EJABBERD_API_URL='https://xmpp.kosmos.org:5443/api'

.env.test

@@ -0,0 +1 @@
+EJABBERD_API_URL='http://xmpp.example.com/api'

Gemfile

@@ -1,12 +1,8 @@
 source 'https://rubygems.org'
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
-ruby '2.6.1'
-
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '~> 6.0.3', '>= 6.0.3.4'
-# Use sqlite3 as the database for Active Record
-gem 'sqlite3', '~> 1.4'
 # Use Puma as the app server
 gem 'puma', '~> 4.1'
 # Use SCSS for stylesheets
@@ -25,14 +21,18 @@ gem 'jbuilder', '~> 2.7'
 # Reduces boot times through caching; required in config/boot.rb
 gem 'bootsnap', '>= 1.4.2', require: false
 
-gem 'dotenv-rails', groups: [:development, :test]
+gem 'dotenv-rails'
 
 gem 'warden'
 gem 'devise'
 gem 'devise_ldap_authenticatable'
 gem 'net-ldap'
 
+gem 'faraday'
+
 group :development, :test do
+  # Use sqlite3 as the database for Active Record
+  gem 'sqlite3', '~> 1.4'
   # Call 'byebug' anywhere in the code to stop execution and get a debugger console
   gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
 end
@@ -53,7 +53,12 @@ group :test do
   gem 'factory_bot_rails'
   gem 'capybara'
   gem 'database_cleaner'
+  gem 'webmock'
 end
 
+group :production do
+  # Use postgresql as the database for Active Record
+  gem 'pg', '~> 1.2.3'
+end
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem
 gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]

Gemfile.lock

@@ -73,6 +73,8 @@ GEM
       regexp_parser (~> 1.5)
       xpath (~> 3.2)
     concurrent-ruby (1.1.7)
+    crack (0.4.3)
+      safe_yaml (~> 1.0.0)
     crass (1.0.6)
     database_cleaner (1.8.5)
     devise (4.7.3)
@@ -95,9 +97,12 @@ GEM
     factory_bot_rails (6.1.0)
       factory_bot (~> 6.1.0)
       railties (>= 5.0.0)
+    faraday (0.17.0)
+      multipart-post (>= 1.2, < 3)
     ffi (1.13.1)
     globalid (0.4.2)
       activesupport (>= 4.2.0)
+    hashdiff (0.4.0)
     i18n (1.8.5)
       concurrent-ruby (~> 1.0)
     jbuilder (2.10.1)
@@ -126,11 +131,13 @@ GEM
     mini_portile2 (2.4.0)
     minitest (5.14.2)
     msgpack (1.3.3)
+    multipart-post (2.1.1)
     net-ldap (0.16.3)
     nio4r (2.5.4)
     nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
     orm_adapter (0.5.0)
+    pg (1.2.3)
     public_suffix (4.0.6)
     puma (4.3.6)
       nio4r (~> 2.0)
@@ -190,6 +197,7 @@ GEM
       rspec-mocks (~> 3.9)
       rspec-support (~> 3.9)
     rspec-support (3.10.0)
+    safe_yaml (1.0.5)
     sass-rails (6.0.0)
       sassc-rails (~> 2.1, >= 2.1.1)
     sassc (2.4.0)
@@ -227,6 +235,10 @@ GEM
       activemodel (>= 6.0.0)
       bindex (>= 0.4.0)
       railties (>= 6.0.0)
+    webmock (3.6.0)
+      addressable (>= 2.3.6)
+      crack (>= 0.3.2)
+      hashdiff (>= 0.4.0, < 2.0.0)
     webpacker (4.3.0)
       activesupport (>= 4.2)
       rack-proxy (>= 0.6.1)
@@ -250,11 +262,13 @@ DEPENDENCIES
   devise_ldap_authenticatable
   dotenv-rails
   factory_bot_rails
+  faraday
   jbuilder (~> 2.7)
   letter_opener
   letter_opener_web
   listen (~> 3.2)
   net-ldap
+  pg (~> 1.2.3)
   puma (~> 4.1)
   rails (~> 6.0.3, >= 6.0.3.4)
   rspec-rails
@@ -266,10 +280,8 @@ DEPENDENCIES
   tzinfo-data
   warden
   web-console (>= 3.3.0)
+  webmock
   webpacker (~> 4.0)
 
-RUBY VERSION
-   ruby 2.6.1p33
-
 BUNDLED WITH
    2.0.2

LICENSE

@@ -0,0 +1,661 @@
+                    GNU AFFERO GENERAL PUBLIC LICENSE
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+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
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+
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+
+  In the following three paragraphs, a "patent license" is any express
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+(such as an express permission to practice a patent or covenant not to
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+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
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+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
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+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
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+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
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+receiving the covered work authorizing them to use, propagate, modify
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+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
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+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Remote Network Interaction; Use with the GNU General Public License.
+
+  Notwithstanding any other provision of this License, if you modify the
+Program, your modified version must prominently offer all users
+interacting with it remotely through a computer network (if your version
+supports such interaction) an opportunity to receive the Corresponding
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+shall include the Corresponding Source for any work covered by version 3
+of the GNU General Public License that is incorporated pursuant to the
+following paragraph.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU General Public License into a single
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+License will continue to apply to the part which is the covered work,
+but the work with which it is combined will remain governed by version
+3 of the GNU General Public License.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU Affero General Public License from time to time.  Such new versions
+will be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU Affero General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU Affero General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU Affero General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
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+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<https://www.gnu.org/licenses/>.

README.md

@@ -1,28 +1,67 @@
-# README
+# Akkounts
 
-This README would normally document whatever steps are necessary to get the
+This app allows Kosmos/LDAP users to manage their accounts, including
-application up and running.
+credentials, invites, donations, etc..
 
-Things you may want to cover:
+## Features
 
-* Ruby version
+* [x] Log in with existing LDAP account
+* [x] Reset account password by providing both username and email address
+* [x] Reset account password when logged in, via reset email
+* [x] Log in with admin permissions
+* [x] View LDAP users as admin
+* [x] Sign up for a new account via invitation
+* [ ] List my donations
+* [ ] Invite new users from your account
+* [ ] Sign up for a new account by donating upfront
+* [ ] Sign up for a new account via proving contributions (via cryptographic signature)
+* [ ] ...
 
-* System dependencies
+_Planned features are not at all a complete or static list, of course.
+Suggestions and pull requests welcome!_
 
-* Configuration
+## Development
 
-* Database creation
+### Rails app
 
-* Database initialization
+Installing dependencies:
 
-* How to run the test suite
+    bundle install
+    yarn install
 
-* Services (job queues, cache servers, search engines, etc.)
+Setting up local database (SQLite):
 
-* Deployment instructions
+    bundle exec rails db:create
+    bundle exec rails db:migrate
 
-* ...
+Running the dev server:
+
+    bundle exec rails server
+
+Running all specs:
+
+    bundle exec rspec
+
+### LDAP server
+
+TODO make it easy to run a local Kosmos LDAP server for development, without
+manual LDIF imports etc. (or provide a staging instance)
 
 ## Documentation
 
+* [Ruby on Rails](https://guides.rubyonrails.org/)
+* [Sass](https://sass-lang.com/documentation)
+
+### Testing
+
+* [RSpec](https://rspec.info/documentation/)
+* [Capybara](https://rubydoc.info/github/teamcapybara/capybara/master)
+
+### LDAP / Auth
+
+* [devise_ldap_authenticatable](https://github.com/cschiewek/devise_ldap_authenticatable)
 * [net/ldap](https://www.rubydoc.info/gems/net-ldap/Net/LDAP)
+
+## License
+
+[GNU Affero General Public License v3.0](https://choosealicense.com/licenses/agpl-3.0/)

app/assets/stylesheets/_mediaqueries.scss

@@ -0,0 +1,33 @@
+$breakpoints-max: (
+  small: 600px,
+  medium: 960px,
+  large: 1280px
+);
+
+$breakpoints-min: (
+  small: 601px,
+  medium: 961px,
+  large: 1281px
+);
+
+@mixin media-max($screen-size) {
+  @if map-has-key($breakpoints-max, $screen-size) {
+    @media (max-width: map-get($breakpoints-max, $screen-size)) {
+      @content;
+    }
+  } @else {
+    // Debugging
+    @warn "'#{$screen-size}' has not been declared as a breakpoint."
+  }
+}
+
+@mixin media-min($screen-size) {
+  @if map-has-key($breakpoints-min, $screen-size) {
+    @media (min-width: map-get($breakpoints-min, $screen-size)) {
+      @content;
+    }
+  } @else {
+    // Debugging
+    @warn "'#{$screen-size}' has not been declared as a breakpoint."
+  }
+}

app/assets/stylesheets/forms.scss

@@ -0,0 +1,35 @@
+form {
+  .field_with_errors {
+    display: inline-block;
+  }
+}
+
+.layout-signup {
+  label {
+    display: none;
+  }
+
+  input[type=text], input[type=email], input[type=password] {
+    font-size: 1.25rem;
+    padding: 0.5rem 1rem;
+  }
+
+  span.at-sign, span.domain {
+    font-size: 1.25rem;
+  }
+
+  .error-msg {
+    color: #bc0101;
+  }
+
+  .actions {
+    margin-top: 2rem;
+  }
+
+  .accept-terms {
+    margin-top: 2rem;
+    font-size: 0.85rem;
+    line-height: 1.5em;
+    color: #888;
+  }
+}

app/assets/stylesheets/layout.scss

@@ -1,3 +1,5 @@
+@import "mediaqueries";
+
 $content-width: 800px;
 $content-max-width: 100%;
 
@@ -15,6 +17,10 @@ body {
     background: #0d4f99;
     background: linear-gradient(35deg, #8955a0 0, #0d4f99 100%);
 
+    @include media-max(small) {
+      padding: 3rem 0;
+    }
+
     h1 {
       font-size: 1.8rem;
       color: #fff;
@@ -42,6 +48,10 @@ body {
       margin-top: 2rem;
       color: rgba(255,255,255,0.6);
 
+      @include media-max(small) {
+        font-size: 0.85rem;
+      }
+
       strong {
         font-weight: 400;
         color: #fff;
@@ -81,6 +91,14 @@ main {
   margin: 4rem auto;
   text-align: left;
 
+  @include media-max(medium) {
+    max-width: 90%;
+  }
+
+  @include media-max(small) {
+    margin: 3rem auto;
+  }
+
   h2, h3 {
     margin-bottom: 1.5em;
   }
@@ -119,6 +137,11 @@ main {
     border-bottom: 1px dotted #ccc;
     padding-bottom: 4rem;
     margin-bottom: 4rem;
+
+    @include media-max(small) {
+      padding-bottom: 3rem;
+      margin-bottom: 3rem;
+    }
   }
 }
 
@@ -130,6 +153,10 @@ main {
     grid-row-gap: 1rem;
     grid-column-gap: 2rem;
 
+    @include media-max(small) {
+      grid-template-columns: 1fr;
+    }
+
     margin-top: 3rem;
 
     h3 {

app/controllers/admin/ldap_users_controller.rb

@@ -25,7 +25,7 @@ class Admin::LdapUsersController < Admin::BaseController
   private
 
   def ldap_client
-    ldap_client ||= Net::LDAP.new host: ENV['LDAP_HOST'],
+    ldap_client ||= Net::LDAP.new host: ldap_config['host'],
       port: ldap_config['port'],
       encryption: ldap_config['ssl'],
       auth: {

app/controllers/application_controller.rb

@@ -9,6 +9,12 @@ class ApplicationController < ActionController::Base
     end
   end
 
+  def require_user_signed_out
+    if user_signed_in?
+      redirect_to root_path and return
+    end
+  end
+
   def authorize_admin
     http_status :forbidden unless current_user.is_admin?
   end

app/controllers/invitations_controller.rb

@@ -0,0 +1,49 @@
+class InvitationsController < ApplicationController
+  before_action :require_user_signed_in, except: ["show"]
+  before_action :require_user_signed_out, only: ["show"]
+
+  layout "signup", only: ["show"]
+
+  # GET /invitations
+  def index
+    @invitations_unused = current_user.invitations.unused
+    @invitations_used   = current_user.invitations.used
+  end
+
+  # GET /invitations/a-random-invitation-token
+  def show
+    token = session[:invitation_token] = params[:id]
+
+    if Invitation.where(token: token, used_at: nil).exists?
+      redirect_to signup_path and return
+    else
+      flash.now[:alert] = "This invitation either doesn't exist or has already been used."
+      http_status :unauthorized
+    end
+  end
+
+  # POST /invitations
+  def create
+    @invitation = Invitation.new(user: current_user)
+
+    respond_to do |format|
+      if @invitation.save
+        format.html { redirect_to @invitation, notice: 'Invitation was successfully created.' }
+        format.json { render :show, status: :created, location: @invitation }
+      else
+        format.html { render :new }
+        format.json { render json: @invitation.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # DELETE /invitations/1
+  def destroy
+    @invitation = current_user.invitations.find(params[:id])
+    @invitation.destroy
+    respond_to do |format|
+      format.html { redirect_to invitations_url }
+      format.json { head :no_content }
+    end
+  end
+end

app/controllers/signup_controller.rb

@@ -0,0 +1,108 @@
+class SignupController < ApplicationController
+  before_action :require_user_signed_out
+  before_action :require_invitation
+  before_action :set_invitation
+  before_action :set_new_user, only: ["steps", "validate"]
+
+  layout "signup"
+
+  def index
+    @invited_by_name = @invitation.user.address
+  end
+
+  def steps
+    @step = params[:step].to_i
+    http_status :not_found unless [1,2,3].include?(@step)
+    @validation_error = session[:validation_error]
+  end
+
+  def validate
+    session[:validation_error] = nil
+
+    case user_params.keys.first
+    when "cn"
+      @user.cn = user_params[:cn]
+      @user.valid?
+      session[:new_user] = @user
+
+      if @user.errors[:cn].present?
+        session[:validation_error] = @user.errors[:cn].first # Store user including validation errors
+        redirect_to signup_steps_path(1) and return
+      else
+        redirect_to signup_steps_path(2) and return
+      end
+    when "email"
+      @user.email = user_params[:email]
+      @user.valid?
+      session[:new_user] = @user
+
+      if @user.errors[:email].present?
+        session[:validation_error] = @user.errors[:email].first # Store user including validation errors
+        redirect_to signup_steps_path(2) and return
+      else
+        redirect_to signup_steps_path(3) and return
+      end
+    when "password"
+      @user.password = user_params[:password]
+      @user.password_confirmation = user_params[:password]
+      @user.valid?
+      session[:new_user] = @user
+
+      if @user.errors[:password].present?
+        session[:validation_error] = @user.errors[:password].first # Store user including validation errors
+        redirect_to signup_steps_path(3) and return
+      else
+        complete_signup
+        msg = "Almost done! We have sent you an email to confirm your address."
+        redirect_to(check_your_email_path, notice: msg) and return
+      end
+    end
+  end
+
+  private
+
+  def user_params
+    params.require(:user).permit(:cn, :email, :password)
+  end
+
+  def require_invitation
+    if session[:invitation_token].blank?
+      flash.now[:alert] = "You need an invitation to sign up for an account."
+      http_status :unauthorized
+    elsif !valid_invitation?(session[:invitation_token])
+      flash.now[:alert] = "This invitation either doesn't exist or has already been used."
+      http_status :unauthorized
+    end
+
+    @invitation = Invitation.find_by(token: session[:invitation_token])
+  end
+
+  def valid_invitation?(token)
+    Invitation.where(token: session[:invitation_token], used_at: nil).exists?
+  end
+
+  def set_invitation
+    @invitation = Invitation.find_by(token: session[:invitation_token])
+  end
+
+  def set_new_user
+    if session[:new_user].present?
+      @user = User.new(session[:new_user])
+    else
+      @user = User.new(ou: "kosmos.org")
+    end
+  end
+
+  def complete_signup
+    session[:new_user] = nil
+    session[:validation_error] = nil
+
+    CreateAccount.call(
+      username: @user.cn,
+      domain: "kosmos.org",
+      email: @user.email,
+      password: @user.password,
+      invitation: @invitation
+    )
+  end
+end

app/helpers/invitations_helper.rb

@@ -0,0 +1,2 @@
+module InvitationsHelper
+end

app/helpers/signup_helper.rb

@@ -0,0 +1,2 @@
+module SignupHelper
+end

app/models/concerns/email_validatable.rb

@@ -0,0 +1,15 @@
+require 'mail'
+
+module EmailValidatable
+  extend ActiveSupport::Concern
+
+  class EmailValidator < ActiveModel::EachValidator
+    def validate_each(record, attribute, value)
+      begin
+        a = Mail::Address.new(value)
+      rescue Mail::Field::ParseError
+        record.errors[attribute] << (options[:message] || "is not a valid address")
+      end
+    end
+  end
+end

app/models/invitation.rb

@@ -0,0 +1,20 @@
+class Invitation < ApplicationRecord
+  # Relations
+  belongs_to :user
+
+  # Validations
+  validates_presence_of :user
+
+  # Hooks
+  before_create :generate_token
+
+  # Scopes
+  scope :unused, -> { where(used_at: nil) }
+  scope :used, -> { where.not(used_at: nil) }
+
+  private
+
+  def generate_token
+    self.token = SecureRandom.hex(8)
+  end
+end

app/models/user.rb

@@ -1,4 +1,14 @@
 class User < ApplicationRecord
+  include EmailValidatable
+
+  # Relations
+  has_many :invitations, dependent: :destroy
+
+  validates_uniqueness_of :cn
+  validates_length_of :cn, :minimum => 3
+  validates_uniqueness_of :email
+  validates :email, email: true
+
   # Include default devise modules. Others available are:
   # :confirmable, :lockable, :timeoutable, :trackable and :omniauthable
   devise :ldap_authenticatable,
@@ -33,4 +43,13 @@ class User < ApplicationRecord
                 false
               end
   end
+
+  def address
+    "#{self.cn}@#{self.ou}"
+  end
+
+  def valid_attribute?(attribute_name)
+    self.valid?
+    self.errors[attribute_name].blank?
+  end
 end

app/services/application_service.rb

@@ -0,0 +1,7 @@
+class ApplicationService
+  # This enables executing a service's `#call` method directly via
+  # `MyService.call(args)`, without creating a class instance it first.
+  def self.call(*args, &block)
+    new(*args, &block).call
+  end
+end

app/services/create_account.rb

@@ -0,0 +1,83 @@
+class CreateAccount < ApplicationService
+  def initialize(args)
+    @username   = args[:username]
+    @domain     = args[:ou] || "kosmos.org"
+    @email      = args[:email]
+    @password   = args[:password]
+    @invitation = args[:invitation]
+  end
+
+  def call
+    user = create_user_in_database
+    add_ldap_document
+
+    if @invitation.present?
+      update_invitation(user.id)
+      exchange_xmpp_contacts
+    end
+  end
+
+  private
+
+  def create_user_in_database
+    User.create!(
+      cn: @username,
+      ou: @domain,
+      email: @email,
+      password: @password,
+      password_confirmation: @password
+    )
+  end
+
+  def update_invitation(user_id)
+    @invitation.update! invited_user_id: user_id, used_at: DateTime.now
+  end
+
+  def add_ldap_document
+    dn = "cn=#{@username},ou=kosmos.org,cn=users,dc=kosmos,dc=org"
+    attr = {
+      objectclass: ["top", "account", "person", "extensibleObject"],
+      cn: @username,
+      sn: @username,
+      uid: @username,
+      mail: @email,
+      userPassword: Devise.ldap_auth_password_builder.call(@password)
+    }
+
+    ldap_client.add(dn: dn, attributes: attr)
+  end
+
+  def ldap_client
+    ldap_client ||= Net::LDAP.new host: ldap_config['host'],
+      port: ldap_config['port'],
+      encryption: ldap_config['ssl'],
+      auth: {
+        method: :simple,
+        username: ldap_config['admin_user'],
+        password: ldap_config['admin_password']
+      }
+  end
+
+  def ldap_config
+    ldap_config ||= YAML.load(ERB.new(File.read("#{Rails.root}/config/ldap.yml")).result)[Rails.env]
+  end
+
+  def exchange_xmpp_contacts
+    #TODO enable in development when we have easy setup of ejabberd etc.
+    return if Rails.env.development?
+
+    ejabberd = EjabberdApiClient.new
+    inviter = @invitation.user
+
+    ejabberd.add_rosteritem({
+      "localuser": @username, "localhost": @domain,
+      "user": inviter.cn, "host": inviter.ou,
+      "nick": inviter.cn, "group": "Friends", "subs": "both"
+    })
+    ejabberd.add_rosteritem({
+      "localuser": inviter.cn, "localhost": inviter.ou,
+      "user": @username, "host": @domain,
+      "nick": @username, "group": "Friends", "subs": "both"
+    })
+  end
+end

app/services/ejabberd_api_client.rb

@@ -0,0 +1,20 @@
+class EjabberdApiClient
+  def initialize
+    @base_url = ENV["EJABBERD_API_URL"]
+  end
+
+  def post(endpoint, payload)
+    res = Faraday.post("#{@base_url}/#{endpoint}", payload.to_json,
+                       "Content-Type" => "application/json")
+
+    if res.status != 200
+      Rails.logger.error "[ejabberd] API request failed:"
+      Rails.logger.error res.body
+      #TODO add some kind of exception tracking/notifications
+    end
+  end
+
+  def add_rosteritem(payload)
+    post "add_rosteritem", payload
+  end
+end

app/views/dashboard/index.html.erb

@@ -6,17 +6,11 @@
   </p>
   <div class="grid services">
     <div class="grid-item chat">
-      <h3><%= link_to "Chat", "https://wiki.kosmos.org/Services:XMPP" %></h3>
+      <h3><%= link_to "Chat", "https://wiki.kosmos.org/Services:Chat" %></h3>
       <p>
         Chat rooms and instant messaging (XMPP/Jabber)
       </p>
     </div>
-    <div class="grid-item gitea">
-      <h3><%= link_to "Gitea", "https://gitea.kosmos.org" %></h3>
-      <p>
-        Code hosting and collaboration for software projects
-      </p>
-    </div>
     <div class="grid-item wiki">
       <h3><%= link_to "Wiki", "https://wiki.kosmos.org" %></h3>
       <p>
@@ -29,6 +23,18 @@
         Kosmos community forums and user support/help site
       </p>
     </div>
+    <div class="grid-item gitea">
+      <h3><%= link_to "Gitea", "https://gitea.kosmos.org" %></h3>
+      <p>
+        Code hosting and collaboration for software projects
+      </p>
+    </div>
+    <div class="grid-item gitea">
+      <h3><%= link_to "Drone CI", "https://drone.kosmos.org" %></h3>
+      <p>
+        Continuous integration for software projects, tied to our Gitea
+      </p>
+    </div>
   </div>
 </section>
 

app/views/invitations/index.html.erb

@@ -0,0 +1,46 @@
+<section>
+  <h2>Invitations</h2>
+  <% if @invitations_unused.any? %>
+    <table>
+      <thead>
+        <tr>
+          <th>URL</th>
+        </tr>
+      </thead>
+      <tbody>
+        <% @invitations_unused.each do |invitation| %>
+          <tr>
+            <td><%= invitation_url(invitation.token) %></td>
+          </tr>
+        <% end %>
+      </tbody>
+    </table>
+  <% else %>
+    <p>
+      You do not have any invitations to give away yet. All good
+      things come in time.
+    </p>
+  <% end %>
+</section>
+
+<% if @invitations_used.any? %>
+  <h3>Accepted Invitations</h3>
+  <table>
+    <thead>
+      <tr>
+        <th>URL</th>
+        <th>Used at</th>
+        <th>Invited user</th>
+      </tr>
+    </thead>
+    <tbody>
+      <% @invitations_used.each do |invitation| %>
+        <tr>
+          <td><%= invitation_url(invitation.token) %></td>
+          <td><%= invitation.used_at %></td>
+          <td><%= User.find(invitation.invited_user_id).address %></td>
+        </tr>
+      <% end %>
+    </tbody>
+  </table>
+<% end %>

app/views/layouts/signup.html.erb

@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Sign up | Kosmos Accounts</title>
+    <%= csrf_meta_tags %>
+    <%= csp_meta_tag %>
+
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+
+    <%= stylesheet_link_tag 'application', media: 'all', 'data-turbolinks-track': 'reload' %>
+    <%= javascript_pack_tag 'application', 'data-turbolinks-track': 'reload' %>
+  </head>
+
+  <body class="layout-signup">
+    <div id="wrapper">
+      <header>
+        <h1>
+          <span class ="project-name">Kosmos</span>
+          <span class ="site-name">Sign Up</span>
+          <!-- <span class="beta"><span class="bolt">⚡</span> beta</span> -->
+        </h1>
+        <% if user_signed_in? %>
+          <p class="current-user">
+            Signed in as <strong><%= current_user.cn %>@kosmos.org</strong>.
+            <%= link_to "Log out", destroy_user_session_path, method: :delete %>
+          </p>
+        <% end %>
+      </header>
+
+      <% flash.each do |type, msg| %>
+        <div class="flash-msg <%= type %>">
+          <p><%= msg %></p>
+        </div>
+      <% end %>
+
+      <main>
+        <%= yield %>
+      </main>
+    </div>
+  </body>
+</html>

app/views/shared/status_forbidden.html.erb

@@ -1,2 +1,2 @@
 <h2>Access forbidden</h2>
-<p>Not with those shoes, buddy.</p>
+<p>Sorry, you're not allowed to access this page.</p>

app/views/shared/status_not_found.html.erb

@@ -0,0 +1,2 @@
+<h2>Not found</h2>
+<p>Sorry, this page does not exist.</p>

app/views/signup/index.html.erb

@@ -0,0 +1,12 @@
+<h2>Welcome</h2>
+<p>
+  Hey there! You were invited to sign up for a Kosmos account by
+  <strong><%= @invited_by_name %></strong>.
+</p>
+<p>
+  This invitation can only be used once, and sign-up is currently only possible
+  by invitation. Seems like you have good friends!
+</p>
+<p>
+  <%= link_to "Get started", signup_steps_path(1), class: "next-step" %>
+</p>

app/views/signup/steps.html.erb

@@ -0,0 +1,61 @@
+<% case @step %>
+<% when 1 %>
+  <h2>Choose a username</h2>
+  <%= form_for @user, :url => signup_validate_url do |f| %>
+    <div class="field">
+      <p>
+        <%= f.label :cn, 'Username' %><br />
+        <%= f.text_field :cn, autofocus: true, autocomplete: "username" %>
+        <span class="at-sign">@</span>
+        <span class="domain">kosmos.org</span>
+      </p>
+      <% if @validation_error.present? %>
+        <p class="error-msg">Username <%= @validation_error %></p>
+      <% end %>
+    </div>
+    <div class="actions">
+      <p><%= f.submit "Continue" %></p>
+    </div>
+  <% end %>
+
+<% when 2 %>
+  <h2>What's your email?</h2>
+  <%= form_for @user, :url => signup_validate_url do |f| %>
+    <div class="field">
+      <p>
+        <%= f.label :email, 'Email address' %><br />
+        <%= f.email_field :email, autofocus: true, autocomplete: "email" %>
+      </p>
+      <% if @validation_error.present? %>
+        <p class="error-msg">Email <%= @validation_error %></p>
+      <% end %>
+    </div>
+    <div class="actions">
+      <p><%= f.submit "Continue" %></p>
+    </div>
+  <% end %>
+
+<% when 3 %>
+  <h2>Choose a password</h2>
+
+  <%= form_for @user, :url => signup_validate_url do |f| %>
+    <div class="field">
+      <p>
+        <%= f.label :password, 'Password' %><br />
+        <%= f.password_field :password, autofocus: true %>
+      </p>
+      <% if @validation_error.present? %>
+        <p class="error-msg">Password <%= @validation_error %></p>
+      <% end %>
+    </div>
+    <p class="accept-terms">
+      <small>
+        By clicking the button below, you accept our future Terms of Service
+        and Privacy Policy. Don't worry, they will be excellent!
+      </small>
+    </p>
+    <div class="actions">
+      <p><%= f.submit "Create account" %></p>
+    </div>
+  <% end %>
+<% end %>

config/application.rb

@@ -33,10 +33,11 @@ module Akkounts
     config.generators.system_tests = nil
 
     config.generators do |g|
-      g.orm             :active_record
+      g.orm                 :active_record
-      g.template_engine :erb
+      g.template_engine     :erb
-      g.test_framework  :rspec, fixture: true
+      g.test_framework      :rspec, fixture: true
-      g.stylesheets     false
+      g.fixture_replacement :factory_bot, suffix_factory: 'factory', dir: 'spec/factories'
+      g.stylesheets         false
     end
   end
 end

config/credentials.yml.enc

@@ -1 +1 @@
-2Xf7uhBU+61XZL2HMF8Xs9fhVkpOhNfV5PKkHPu4uASpP1zwEJZcRyTJrhBVvJ29Y3m+3hhNAI2OeiYFDPepMDWcocrVjS+am/Gt9DW2tbhYZo0nN9lMU6EymQ5tl9ROgnvcPukwf823/Mrb6zPBysHruOlhdRc7JmW6EXuxL6tUhGsSJmaRfGiMWwiioJsyHCB2VsesKZlSDxItnhuX5d8gBABJyNdzi+Pyepz7MWkWp6ux80jOANq5uljn8bP5CLgUZKoGgveKzZdIs2uNb0wSIohSn+Ckfm+QhMm6mlEocAkHPt+nToiNAmSnx7p/l1sqKNFXslXHJKdkFFr8tx/R45aGPA/nL6R16DOnjtsJ84JXeh13VwR/0ZkyzsM2dQIwCvwo3xjdgBi46HWMwXwm6Y3A+ni6sK5BEvmAT4qu--AoOw35tpM//TeoWI--Uz4fvyRgmc2ewK6d7OFo6A==
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--bRcsE4K/29XzyZat--+G3iQCLBqgSwLaQ+7+4YvA==

config/database.yml

@@ -22,4 +22,9 @@ test:
 
 production:
   <<: *default
-  database: db/production.sqlite3
+  adapter: postgresql
+  database: akkounts
+  port: 5432
+  host: <%= Rails.application.credentials.postgres[:host] rescue nil %>
+  username: <%= Rails.application.credentials.postgres[:username] rescue nil %>
+  password: <%= Rails.application.credentials.postgres[:password] rescue nil %>

config/environments/production.rb

@@ -59,6 +59,23 @@ Rails.application.configure do
 
   config.action_mailer.perform_caching = false
 
+  config.action_mailer.delivery_method = :smtp
+
+  config.action_mailer.smtp_settings = {
+    address: "mail.gandi.net",
+    port: "587",
+    authentication: "plain",
+    enable_starttls_auto: true,
+    user_name: Rails.application.credentials.smtp[:username],
+    password: Rails.application.credentials.smtp[:password]
+  }
+
+  config.action_mailer.default_url_options = {
+    host: "accounts.kosmos.org",
+    protocol: "https",
+    from: "accounts@kosmos.org"
+  }
+
   # Ignore bad email addresses and do not raise email delivery errors.
   # Set this to true and configure the email server for immediate delivery to raise delivery errors.
   # config.action_mailer.raise_delivery_errors = false

config/environments/test.rb

@@ -43,4 +43,10 @@ Rails.application.configure do
 
   # Raises error for missing translations.
   # config.action_view.raise_on_missing_translations = true
+
+  config.action_mailer.default_url_options = {
+    host: "accounts.kosmos.org",
+    protocol: "https",
+    from: "accounts@kosmos.org"
+  }
 end

config/initializers/devise.rb

@@ -49,7 +49,7 @@ Devise.setup do |config|
   # Configure the e-mail address which will be shown in Devise::Mailer,
   # note that it will be overwritten if you use your own mailer class
   # with default "from" parameter.
-  config.mailer_sender = 'please-change-me-at-config-initializers-devise@example.com'
+  config.mailer_sender = 'accounts@kosmos.org'
 
   # Configure the class responsible to send e-mails.
   # config.mailer = 'Devise::Mailer'

config/ldap.yml

@@ -50,7 +50,7 @@ production:
   port: 636
   attribute: cn
   base: ou=kosmos.org,cn=users,dc=kosmos,dc=org
-  admin_user: "cn=Directory Manager"
+  admin_user: <%= Rails.application.credentials.ldap[:username] rescue nil %>
-  admin_password: writtenbychef
+  admin_password: <%= Rails.application.credentials.ldap[:password] rescue nil %>
   ssl: simple_tls
   # <<: *AUTHORIZATIONS

config/locales/devise.en.yml

@@ -3,7 +3,7 @@
 en:
   devise:
     confirmations:
-      confirmed: "Your email address has been confirmed. You can now log in below."
+      confirmed: "Thanks for confirming your email address! Your account has been activated."
       send_instructions: "You will receive an email with instructions for how to confirm your email address in a moment."
       send_paranoid_instructions: "If your email address exists in our database, you will receive an email with instructions for how to confirm your email address in a few minutes."
     failure:
@@ -15,7 +15,7 @@ en:
       not_found_in_database: "Invalid %{authentication_keys} or password."
       timeout: "Your session expired. Please sign in again to continue."
       unauthenticated: "You need to sign in or sign up before continuing."
-      unconfirmed: "You have to confirm your email address before continuing."
+      unconfirmed: "Please confirm your email address before continuing."
     mailer:
       confirmation_instructions:
         subject: "Confirmation instructions"

config/routes.rb

@@ -1,11 +1,17 @@
 Rails.application.routes.draw do
   devise_for :users
 
+  get 'welcome', to: 'welcome#index'
+  get 'check_your_email', to: 'welcome#check_your_email'
+
+  get 'signup', to: 'signup#index'
+  match 'signup/:step', to: 'signup#steps', as: :signup_steps, via: [:get, :post]
+  post 'signup_validate', to: 'signup#validate'
+
   get 'settings', to: 'settings#index'
   post 'settings_reset_password', to: 'settings#reset_password'
 
-  get 'welcome', to: 'welcome#index'
+  resources :invitations, only: ['index', 'show', 'create', 'destroy']
-  get 'check_your_email', to: 'welcome#check_your_email'
 
   namespace :admin do
     root to: 'dashboard#index'

db/migrate/20201130132533_create_invitations.rb

@@ -0,0 +1,14 @@
+class CreateInvitations < ActiveRecord::Migration[6.0]
+  def change
+    create_table :invitations do |t|
+      t.string :token
+      t.integer :user_id
+      t.integer :invited_user_id
+      t.datetime :used_at
+
+      t.timestamps
+    end
+    add_index :invitations, :user_id
+    add_index :invitations, :invited_user_id
+  end
+end

db/schema.rb

@@ -10,7 +10,16 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2020_11_09_090739) do
+ActiveRecord::Schema.define(version: 2020_11_30_132533) do
+
+  create_table "invitations", force: :cascade do |t|
+    t.string "token"
+    t.integer "user_id"
+    t.integer "invited_user_id"
+    t.datetime "used_at"
+    t.datetime "created_at", precision: 6, null: false
+    t.datetime "updated_at", precision: 6, null: false
+  end
 
   create_table "users", force: :cascade do |t|
     t.string "cn"

lib/tasks/invitations.rake

@@ -0,0 +1,13 @@
+namespace :invitations do
+  desc "Generate invitations for all users"
+  task :generate_for_all_users, [:amount_per_user] => :environment do |t, args|
+    count = 0
+    User.all.each do |user|
+      args[:amount_per_user].to_i.times do
+        user.invitations << Invitation.create(user: user)
+        count += 1
+      end
+    end
+    puts "Created #{count} new invitations"
+  end
+end

spec/factories/invitations.rb

@@ -0,0 +1,6 @@
+FactoryBot.define do
+  factory :invitation do
+    token { "abcdef123456" }
+    user
+  end
+end

spec/features/signup_spec.rb

@@ -0,0 +1,107 @@
+require "rails_helper"
+
+RSpec.describe "Signup", type: :feature do
+  let(:user) { create :user }
+
+  describe "Invitation handling" do
+    before do
+      @unused_invitation = Invitation.create(user: user)
+      @used_invitation   = Invitation.create(user: user)
+      @used_invitation.update_attribute :used_at, DateTime.now - 1.day
+    end
+
+    scenario "Follow link for non-existing invitation" do
+      visit invitation_url(id: "123")
+
+      within ".flash-msg.alert" do
+        expect(page).to have_content("doesn't exist")
+      end
+    end
+
+    scenario "Follow link for used invitation" do
+      visit invitation_url(id: @used_invitation.token)
+
+      within ".flash-msg.alert" do
+        expect(page).to have_content("has already been used")
+      end
+    end
+
+    scenario "Follow link for unused invitation" do
+      visit invitation_url(id: @unused_invitation.token)
+
+      expect(current_url).to eq(signup_url)
+      expect(page).to have_content("Welcome")
+    end
+  end
+
+  describe "Signup steps" do
+    before do
+      @invitation = Invitation.create(user: user)
+      visit invitation_url(id: @invitation.token)
+      click_link "Get started"
+    end
+
+    scenario "Successful signup (happy path galore)" do
+      expect(page).to have_content("Choose a username")
+
+      fill_in "user_cn", with: "tony"
+      click_button "Continue"
+      expect(page).to have_content("What's your email?")
+
+      fill_in "user_email", with: "tony@example.com"
+      click_button "Continue"
+      expect(page).to have_content("Choose a password")
+
+      expect(CreateAccount).to receive(:call)
+        .with(
+          username: "tony", domain: "kosmos.org",
+          email: "tony@example.com", password: "a-valid-password",
+          invitation: Invitation.last
+        ).and_return(true)
+
+      fill_in "user_password", with: "a-valid-password"
+      click_button "Create account"
+      within ".flash-msg.notice" do
+        expect(page).to have_content("confirm your address")
+      end
+      expect(page).to have_content("close this window or tab now")
+    end
+
+    scenario "Validation errors" do
+      fill_in "user_cn", with: "t"
+      click_button "Continue"
+      expect(page).to have_content("Username is too short")
+      fill_in "user_cn", with: "jimmy"
+      click_button "Continue"
+      expect(page).to have_content("Username has already been taken")
+      fill_in "user_cn", with: "tony"
+      click_button "Continue"
+
+      fill_in "user_email", with: "tony@"
+      click_button "Continue"
+      expect(page).to have_content("Email is not a valid address")
+      fill_in "user_email", with: ""
+      click_button "Continue"
+      expect(page).to have_content("Email can't be blank")
+      fill_in "user_email", with: "tony@example.com"
+      click_button "Continue"
+
+      fill_in "user_password", with: "123456"
+      click_button "Create account"
+      expect(page).to have_content("Password is too short")
+
+      expect(CreateAccount).to receive(:call)
+        .with(
+          username: "tony", domain: "kosmos.org",
+          email: "tony@example.com", password: "a-valid-password",
+          invitation: Invitation.last
+        ).and_return(true)
+
+      fill_in "user_password", with: "a-valid-password"
+      click_button "Create account"
+      within ".flash-msg.notice" do
+        expect(page).to have_content("confirm your address")
+      end
+    end
+  end
+end

spec/fixtures/users.yml

@@ -1,7 +0,0 @@
-# Read about fixtures at https://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
-
-one:
-  uid: MyString
-
-two:
-  uid: MyString

spec/helpers/invitations_helper_spec.rb

@@ -0,0 +1,15 @@
+require 'rails_helper'
+
+# Specs in this file have access to a helper object that includes
+# the InvitationsHelper. For example:
+#
+# describe InvitationsHelper do
+#   describe "string concat" do
+#     it "concats two strings with spaces" do
+#       expect(helper.concat_strings("this","that")).to eq("this that")
+#     end
+#   end
+# end
+RSpec.describe InvitationsHelper, type: :helper do
+  pending "add some examples to (or delete) #{__FILE__}"
+end

spec/helpers/signup_helper_spec.rb

@@ -0,0 +1,15 @@
+require 'rails_helper'
+
+# Specs in this file have access to a helper object that includes
+# the SignupHelper. For example:
+#
+# describe SignupHelper do
+#   describe "string concat" do
+#     it "concats two strings with spaces" do
+#       expect(helper.concat_strings("this","that")).to eq("this that")
+#     end
+#   end
+# end
+RSpec.describe SignupHelper, type: :helper do
+  pending "add some examples to (or delete) #{__FILE__}"
+end

spec/models/invitation_spec.rb

@@ -0,0 +1,44 @@
+require 'rails_helper'
+
+RSpec.describe Invitation, type: :model do
+  let(:user) { build :user }
+
+  describe "tokens" do
+    it "requires a user" do
+      expect { Invitation.create! }.to raise_error(ActiveRecord::RecordInvalid)
+    end
+
+    it "generates a random token when created" do
+      invitation = Invitation.new(user: user)
+      invitation.save!
+      token = invitation.token
+      expect(token).to be_a(String)
+      expect(token.length).to eq(16)
+
+      invitation_2 = Invitation.create(user: user)
+      expect(token).not_to eq(invitation_2.token)
+    end
+  end
+
+  describe "scopes" do
+    before do
+      @unused_invitation = create :invitation, user: user
+      @used_invitation   = create :invitation, user: user, used_at: DateTime.now
+      @used_invitation_2 = create :invitation, user: user, used_at: DateTime.now
+    end
+
+    describe "#unused" do
+      it "returns unused invitations" do
+        expect(Invitation.unused.count).to eq(1)
+        expect(Invitation.unused.first).to eq(@unused_invitation)
+      end
+    end
+
+    describe "#used" do
+      it "returns used invitations" do
+        expect(Invitation.used.count).to eq(2)
+        expect(Invitation.used.first).to eq(@used_invitation)
+      end
+    end
+  end
+end

spec/models/user_spec.rb

@@ -20,4 +20,12 @@ RSpec.describe User, type: :model do
       expect(user.is_admin?).to be false
     end
   end
+
+  describe "#address" do
+    let(:user) { build :user, cn: "jimmy", ou: "kosmos.org" }
+
+    it "returns the user address" do
+      expect(user.address).to eq("jimmy@kosmos.org")
+    end
+  end
 end

spec/requests/signup_request_spec.rb

@@ -0,0 +1,14 @@
+require 'rails_helper'
+
+RSpec.describe "Signups", type: :request do
+
+  describe "GET /index" do
+    context "without invitation" do
+      it "returns http unauthorized" do
+        get "/signup"
+        expect(response).to have_http_status(:unauthorized)
+      end
+    end
+  end
+
+end

spec/services/create_account_spec.rb

@@ -0,0 +1,98 @@
+require 'rails_helper'
+require 'webmock/rspec'
+require 'json'
+
+RSpec.describe CreateAccount, type: :model do
+  let(:ldap_client_mock) { instance_double(Net::LDAP) }
+
+  before do
+    allow(service).to receive(:ldap_client).and_return(ldap_client_mock)
+  end
+
+  describe "#create_user_in_database" do
+    let(:service) { CreateAccount.new(
+      username: 'isaacnewton',
+      email: 'isaacnewton@example.com',
+      password: 'bright-ideas-in-autumn'
+    )}
+
+    it "creates a new user record in the akkounts database" do
+      expect(User.count).to eq(0)
+      service.send(:create_user_in_database)
+      expect(User.count).to eq(1)
+      expect(User.last.cn).to eq("isaacnewton")
+      expect(User.last.email).to eq("isaacnewton@example.com")
+    end
+  end
+
+  describe "#update_invitation" do
+    let(:invitation) { create :invitation }
+    let(:service) { CreateAccount.new(
+      username: 'isaacnewton',
+      email: 'isaacnewton@example.com',
+      password: 'bright-ideas-in-autumn',
+      invitation: invitation
+    )}
+
+    before(:each) do
+      service.send(:update_invitation, 23)
+    end
+
+    it "marks the invitation as used" do
+      expect(invitation.used_at).not_to be_nil
+    end
+
+    it "saves the invited user's ID" do
+      expect(invitation.invited_user_id).to eq(23)
+    end
+  end
+
+  describe "#add_ldap_document" do
+    let(:service) { CreateAccount.new(
+      username: 'halfinney',
+      email: 'halfinney@example.com',
+      password: 'remember-remember-the-5th-of-november'
+    )}
+
+    it "creates a new document with the correct attributes" do
+      expect(ldap_client_mock).to receive(:add).with(
+        dn: "cn=halfinney,ou=kosmos.org,cn=users,dc=kosmos,dc=org",
+        attributes: {
+          objectclass: ["top", "account", "person", "extensibleObject"],
+          cn: "halfinney",
+          sn: "halfinney",
+          uid: "halfinney",
+          mail: "halfinney@example.com",
+          userPassword: /^{SSHA512}.{171}=/
+        }
+      )
+
+      service.send(:add_ldap_document)
+    end
+  end
+
+  describe "#exchange_xmpp_contacts" do
+    let(:inviter) { create :user, cn: "willherschel", ou: "kosmos.org" }
+    let(:invitation) { create :invitation, user: inviter }
+    let(:service) { CreateAccount.new(
+      username: 'isaacnewton',
+      email: 'isaacnewton@example.com',
+      password: 'bright-ideas-in-autumn',
+      invitation: invitation
+    )}
+
+    before do
+      stub_request(:post, "http://xmpp.example.com/api/add_rosteritem")
+        .to_return(status: 200, body: "", headers: {})
+    end
+
+    it "posts add_rosteritem commands to the ejabberd API" do
+      service.send(:exchange_xmpp_contacts)
+
+      expect(WebMock).to have_requested(:post, "http://xmpp.example.com/api/add_rosteritem")
+        .with { |req| req.body == '{"localuser":"isaacnewton","localhost":"kosmos.org","user":"willherschel","host":"kosmos.org","nick":"willherschel","group":"Friends","subs":"both"}' }
+      expect(WebMock).to have_requested(:post, "http://xmpp.example.com/api/add_rosteritem")
+        .with { |req| req.body == '{"localuser":"willherschel","localhost":"kosmos.org","user":"isaacnewton","host":"kosmos.org","nick":"isaacnewton","group":"Friends","subs":"both"}' }
+    end
+  end
+end