wip: paid subscriptions system and articles

.overcommit.yml

@@ -51,8 +51,8 @@ CommitMsg:
     enabled: true
     description: 'Ensure commit message follows commit style'
     on_fail: warn
-    pattern: '^(build|ci|docs|feat|fix|perf|refactor|style|test)(\(.+\))?: .{1,50}'
-    expected_pattern_message: '<build|ci|docs|feat|fix|perf|refactor|style|test>(<scope>): <message>'
+    pattern: '^(build|chore|ci|docs|feat|fix|perf|refactor|style|test)(\(.+\))?: .{1,50}'
+    expected_pattern_message: '<build|chore|ci|docs|feat|fix|perf|refactor|style|test>(<scope>): <message>'
     sample_message: 'ci(rubocop): increase class length limit'
 
   TextWidth:

.rubocop.yml

@@ -35,7 +35,7 @@ Metrics/MethodLength:
   Max: 20
 
 Metrics/AbcSize:
-  Max: 20
+  Max: 30
 
 Rails/HelperInstanceVariable:
   Enabled: false
@@ -61,3 +61,6 @@ Style/SymbolArray:
 
 Style/HashSyntax:
   EnforcedShorthandSyntax: either_consistent
+
+Style/NumericPredicate:
+  Enabled: false

Gemfile

@@ -55,6 +55,9 @@ gem 'cancancan', '~> 3.6'
 # Use Active Storage variants [https://guides.rubyonrails.org/active_storage_overview.html#transforming-images]
 # gem "image_processing", "~> 1.2"
 
+# Generate pdf files [https://github.com/gettalong/hexapdf]
+gem 'hexapdf', '~> 0.40.0'
+
 group :development, :test do
   # See https://guides.rubyonrails.org/debugging_rails_applications.html#debugging-with-the-debug-gem
   gem 'debug', platforms: [:mri, :mswin, :mswin64, :mingw, :x64_mingw]

Gemfile.lock

@@ -101,6 +101,7 @@ GEM
       regexp_parser (>= 1.5, < 3.0)
       xpath (~> 3.2)
     childprocess (5.0.0)
+    cmdparse (3.0.7)
     coderay (1.1.3)
     concurrent-ruby (1.3.3)
     connection_pool (2.4.1)
@@ -126,6 +127,7 @@ GEM
       net-http
     ffi (1.16.3)
     formatador (1.1.0)
+    geom2d (0.4.1)
     globalid (1.2.1)
       activesupport (>= 6.1)
     guard (2.18.1)
@@ -143,6 +145,10 @@ GEM
       minitest (>= 3.0)
     hashdiff (1.1.0)
     hashie (5.0.0)
+    hexapdf (0.40.0)
+      cmdparse (~> 3.0, >= 3.0.3)
+      geom2d (~> 0.4, >= 0.4.1)
+      openssl (>= 2.2.1)
     i18n (1.14.5)
       concurrent-ruby (~> 1.0)
     importmap-rails (1.2.3)
@@ -232,6 +238,7 @@ GEM
       tzinfo
       validate_url
       webfinger (~> 2.0)
+    openssl (3.2.0)
     overcommit (0.63.0)
       childprocess (>= 0.6.3, < 6)
       iniparse (~> 1.4)
@@ -423,6 +430,7 @@ DEPENDENCIES
   error_highlight (>= 0.4.0)
   guard (~> 2.18)
   guard-minitest (~> 2.4)
+  hexapdf (~> 0.40.0)
   importmap-rails (~> 1.2)
   ipaddress (~> 0.8.3)
   jbuilder (~> 2.12)

app/assets/fonts/DejaVu-license.txt

@@ -0,0 +1,187 @@
+Fonts are (c) Bitstream (see below). DejaVu changes are in public domain.
+Glyphs imported from Arev fonts are (c) Tavmjong Bah (see below)
+
+
+Bitstream Vera Fonts Copyright
+------------------------------
+
+Copyright (c) 2003 by Bitstream, Inc. All Rights Reserved. Bitstream Vera is
+a trademark of Bitstream, Inc.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of the fonts accompanying this license ("Fonts") and associated
+documentation files (the "Font Software"), to reproduce and distribute the
+Font Software, including without limitation the rights to use, copy, merge,
+publish, distribute, and/or sell copies of the Font Software, and to permit
+persons to whom the Font Software is furnished to do so, subject to the
+following conditions:
+
+The above copyright and trademark notices and this permission notice shall
+be included in all copies of one or more of the Font Software typefaces.
+
+The Font Software may be modified, altered, or added to, and in particular
+the designs of glyphs or characters in the Fonts may be modified and
+additional glyphs or characters may be added to the Fonts, only if the fonts
+are renamed to names not containing either the words "Bitstream" or the word
+"Vera".
+
+This License becomes null and void to the extent applicable to Fonts or Font
+Software that has been modified and is distributed under the "Bitstream
+Vera" names.
+
+The Font Software may be sold as part of a larger software package but no
+copy of one or more of the Font Software typefaces may be sold by itself.
+
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT,
+TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL BITSTREAM OR THE GNOME
+FOUNDATION BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING
+ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
+THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM OTHER DEALINGS IN THE
+FONT SOFTWARE.
+
+Except as contained in this notice, the names of Gnome, the Gnome
+Foundation, and Bitstream Inc., shall not be used in advertising or
+otherwise to promote the sale, use or other dealings in this Font Software
+without prior written authorization from the Gnome Foundation or Bitstream
+Inc., respectively. For further information, contact: fonts at gnome dot
+org.
+
+Arev Fonts Copyright
+------------------------------
+
+Copyright (c) 2006 by Tavmjong Bah. All Rights Reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of the fonts accompanying this license ("Fonts") and
+associated documentation files (the "Font Software"), to reproduce
+and distribute the modifications to the Bitstream Vera Font Software,
+including without limitation the rights to use, copy, merge, publish,
+distribute, and/or sell copies of the Font Software, and to permit
+persons to whom the Font Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright and trademark notices and this permission notice
+shall be included in all copies of one or more of the Font Software
+typefaces.
+
+The Font Software may be modified, altered, or added to, and in
+particular the designs of glyphs or characters in the Fonts may be
+modified and additional glyphs or characters may be added to the
+Fonts, only if the fonts are renamed to names not containing either
+the words "Tavmjong Bah" or the word "Arev".
+
+This License becomes null and void to the extent applicable to Fonts
+or Font Software that has been modified and is distributed under the 
+"Tavmjong Bah Arev" names.
+
+The Font Software may be sold as part of a larger software package but
+no copy of one or more of the Font Software typefaces may be sold by
+itself.
+
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
+OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL
+TAVMJONG BAH BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
+OTHER DEALINGS IN THE FONT SOFTWARE.
+
+Except as contained in this notice, the name of Tavmjong Bah shall not
+be used in advertising or otherwise to promote the sale, use or other
+dealings in this Font Software without prior written authorization
+from Tavmjong Bah. For further information, contact: tavmjong @ free
+. fr.
+
+TeX Gyre DJV Math
+-----------------
+Fonts are (c) Bitstream (see below). DejaVu changes are in public domain.
+
+Math extensions done by B. Jackowski, P. Strzelczyk and P. Pianowski
+(on behalf of TeX users groups) are in public domain.
+
+Letters imported from Euler Fraktur from AMSfonts are (c) American
+Mathematical Society (see below).
+Bitstream Vera Fonts Copyright
+Copyright (c) 2003 by Bitstream, Inc. All Rights Reserved. Bitstream Vera
+is a trademark of Bitstream, Inc.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of the fonts accompanying this license (“Fonts”) and associated
+documentation
+files (the “Font Software”), to reproduce and distribute the Font Software,
+including without limitation the rights to use, copy, merge, publish,
+distribute,
+and/or sell copies of the Font Software, and to permit persons  to whom
+the Font Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright and trademark notices and this permission notice
+shall be
+included in all copies of one or more of the Font Software typefaces.
+
+The Font Software may be modified, altered, or added to, and in particular
+the designs of glyphs or characters in the Fonts may be modified and
+additional
+glyphs or characters may be added to the Fonts, only if the fonts are
+renamed
+to names not containing either the words “Bitstream” or the word “Vera”.
+
+This License becomes null and void to the extent applicable to Fonts or
+Font Software
+that has been modified and is distributed under the “Bitstream Vera”
+names.
+
+The Font Software may be sold as part of a larger software package but
+no copy
+of one or more of the Font Software typefaces may be sold by itself.
+
+THE FONT SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT,
+TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL BITSTREAM OR THE GNOME
+FOUNDATION
+BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY GENERAL,
+SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN AN
+ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR
+INABILITY TO USE
+THE FONT SOFTWARE OR FROM OTHER DEALINGS IN THE FONT SOFTWARE.
+Except as contained in this notice, the names of GNOME, the GNOME
+Foundation,
+and Bitstream Inc., shall not be used in advertising or otherwise to promote
+the sale, use or other dealings in this Font Software without prior written
+authorization from the GNOME Foundation or Bitstream Inc., respectively.
+For further information, contact: fonts at gnome dot org.
+
+AMSFonts (v. 2.2) copyright
+
+The PostScript Type 1 implementation of the AMSFonts produced by and
+previously distributed by Blue Sky Research and Y&Y, Inc. are now freely
+available for general use. This has been accomplished through the
+cooperation
+of a consortium of scientific publishers with Blue Sky Research and Y&Y.
+Members of this consortium include:
+
+Elsevier Science IBM Corporation Society for Industrial and Applied
+Mathematics (SIAM) Springer-Verlag American Mathematical Society (AMS)
+
+In order to assure the authenticity of these fonts, copyright will be
+held by
+the American Mathematical Society. This is not meant to restrict in any way
+the legitimate use of the fonts, such as (but not limited to) electronic
+distribution of documents containing these fonts, inclusion of these fonts
+into other public domain or commercial font collections or computer
+applications, use of the outline data to create derivative fonts and/or
+faces, etc. However, the AMS does require that the AMS copyright notice be
+removed from any derivative versions of the fonts which have been altered in
+any way. In addition, to ensure the fidelity of TeX documents using Computer
+Modern fonts, Professor Donald Knuth, creator of the Computer Modern faces,
+has requested that any alterations which yield different font metrics be
+given a different name.
+
+$Id$

app/controllers/admin/articles_controller.rb

@@ -0,0 +1,39 @@
+# frozen_string_literal: true
+
+module Admin
+  # Do NOT implement edit/update methods, we want to keep
+  # articles immutable.
+  # If you want to edit an article, create a new one and
+  # soft-delete the other.
+  class ArticlesController < ApplicationController
+    def new
+      @article = Article.new
+      authorize! :new, @article
+    end
+
+    def create
+      @article = Article.new(article_params)
+      authorize! :create, @article
+      if @article.save
+        flash[:success] = "Article #{article_params[:name]} created!"
+        redirect_to admin_path
+      else
+        render 'new', status: :unprocessable_entity
+      end
+    end
+
+    def destroy
+      @article = Article.find(params[:id])
+      authorize! :destroy, @article
+      # Try to destroy (if there is no associated sale/refund),
+      # else soft-delete to keep current sales immutable (not
+      # change article price on past sales)
+      @article.destroy or @article.soft_delete
+      redirect_to admin_path
+    end
+
+    def article_params
+      params.require(:article).permit(:price, :name)
+    end
+  end
+end

app/controllers/admin/dashboard_controller.rb

@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+module Admin
+  class DashboardController < ApplicationController
+    def index
+      authorize! :manage, :all # TODO: use finer grained permissions
+      @articles = Article.accessible_by(current_ability).order(created_at: :desc)
+      @subscription_offers = SubscriptionOffer.accessible_by(current_ability).order(created_at: :desc)
+      @payment_methods = PaymentMethod.accessible_by(current_ability).order(created_at: :desc)
+    end
+  end
+end

app/controllers/admin/payment_methods_controller.rb

@@ -0,0 +1,39 @@
+# frozen_string_literal: true
+
+module Admin
+  # Do NOT implement edit/update methods, we want to keep
+  # payment methods immutable.
+  # If you want to edit a payment method, create a new one and
+  # soft-delete the other.
+  class PaymentMethodsController < ApplicationController
+    def new
+      @payment_method = PaymentMethod.new
+      authorize! :new, @payment_method
+    end
+
+    def create
+      @payment_method = PaymentMethod.new(payment_method_params)
+      authorize! :create, @payment_method
+      if @payment_method.save
+        flash[:success] = "Payment method #{payment_method_params[:name]} created!"
+        redirect_to admin_path
+      else
+        render 'new', status: :unprocessable_entity
+      end
+    end
+
+    def destroy
+      @payment_method = PaymentMethod.find(params[:id])
+      authorize! :destroy, @payment_method
+      # Try to destroy (if there is no associated sale/refund),
+      # else soft-delete to keep current sales immutable (not
+      # change payment method on past sales)
+      @payment_method.destroy or @payment_method.soft_delete
+      redirect_to admin_path
+    end
+
+    def payment_method_params
+      params.require(:payment_method).permit(:name, :auto_verify)
+    end
+  end
+end