wip: paid subscriptions system and articles

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/controllers/admin/articles_controller.rb

@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+module Admin
+  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
+      @article.soft_delete unless @article.destroy
+      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
+      @articles = Article.where(deleted_at: nil).order(created_at: :desc)
+      @subscription_offers = SubscriptionOffer.where(deleted_at: nil).order(created_at: :desc)
+      @payment_methods = PaymentMethod.where(deleted_at: nil).order(created_at: :desc)
+    end
+  end
+end

app/controllers/admin/payment_methods_controller.rb

@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+module Admin
+  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
+      @payment_method.soft_delete unless @payment_method.destroy
+      redirect_to admin_path
+    end
+
+    def payment_method_params
+      params.require(:payment_method).permit(:name, :auto_verify)
+    end
+  end
+end

app/controllers/admin/subscription_offers_controller.rb

@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+module Admin
+  class SubscriptionOffersController < ApplicationController
+    def new
+      @subscription_offer = SubscriptionOffer.new
+      authorize! :new, @subscription_offer
+    end
+
+    def create
+      @subscription_offer = SubscriptionOffer.new(subscription_offer_params)
+      authorize! :create, @subscription_offer
+      if @subscription_offer.save
+        flash[:success] = "Subscription offer for #{subscription_offer_params[:duration]} months created!"
+        redirect_to admin_path
+      else
+        render 'new', status: :unprocessable_entity
+      end
+    end
+
+    def destroy
+      @subscription_offer = SubscriptionOffer.find(params[:id])
+      authorize! :destroy, @subscription_offer
+      @subscription_offer.soft_delete unless @subscription_offer.destroy
+      redirect_to admin_path
+    end
+
+    def subscription_offer_params
+      params.require(:subscription_offer).permit(:price, :duration)
+    end
+  end
+end

app/controllers/refunds_controller.rb

@@ -0,0 +1,4 @@
+# frozen_string_literal: true
+
+class RefundsController < ApplicationController
+end

app/controllers/sales_controller.rb

@@ -0,0 +1,81 @@
+# frozen_string_literal: true
+
+class SalesController < ApplicationController
+  before_action :owner, only: [:new, :create]
+
+  def new
+    @sale = @owner.sales_as_client.new
+    @sale.articles_sales.new
+    @articles = Article.where(deleted_at: nil)
+    @subscription_offers = SubscriptionOffer.where(deleted_at: nil).order(duration: :desc)
+    @payment_methods = PaymentMethod.where(deleted_at: nil)
+    authorize! :new, @sale
+  end
+
+  # rubocop:disable Metrics/AbcSize
+  def create
+    @sale = @owner.sales_as_client.new(reformated_params)
+    @sale.update_total_price
+    @sale.seller = current_user
+    if @sale.total_price.zero?
+      flash.now[:error] = "You can't process an empty sale!"
+      return render :new, status: :unprocessable_entity
+    end
+    @sale.verify if @sale.payment_method.auto_verify
+    @sale.gen_temp_invoice
+    authorize! :create, @sale
+    if @sale.save
+      name = @sale.generate_invoice_id
+      @sale.invoice.pdf.attach(io: @sale.invoice.generate, filename: name, content_type: 'application/pdf')
+      @sale.save!
+      flash[:success] = 'Sale was successfully created.'
+      redirect_to @owner
+    else
+      render :new, status: :unprocessable_entity
+    end
+  end
+  # rubocop:enable Metrics/AbcSize
+
+  private
+
+  def owner
+    @owner = User.find(params[:user_id])
+  end
+
+  def sales_params
+    params.require(:sale).permit(:duration, :payment_method_id, articles_sales_attributes: [:article_id, :quantity])
+  end
+
+  def reformated_params
+    par = sales_params
+    par[:sales_subscription_offers_attributes] = duration_to_subscription_offers sales_params[:duration].to_i
+    par.delete(:duration)
+    par[:articles_sales_attributes]&.each do |rec|
+      par[:articles_sales_attributes].delete(rec[0]) if rec[1][:quantity].to_i.zero?
+    end
+    par
+  end
+
+  def duration_to_subscription_offers(duration)
+    tab = []
+    subscription_offers = SubscriptionOffer.where(deleted_at: nil).order(duration: :desc)
+    if subscription_offers.empty?
+      flash[:error] = 'There are no subscription offers registered!'
+      return false
+    end
+    subscription_offers.each do |offer|
+      break if duration.zero?
+
+      quantity = duration / offer.duration
+      if quantity.positive?
+        tab << { subscription_offer_id: offer.id, quantity: quantity }
+        duration -= quantity * offer.duration
+      end
+    end
+    unless duration.zero?
+      flash[:error] = 'Subscription offers are not exhaustive!'
+      return false
+    end
+    tab
+  end
+end

app/helpers/admin/articles_helper.rb

@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+module Admin
+  module ArticlesHelper
+  end
+end

app/helpers/admin/dashboard_helper.rb

@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+module Admin
+  module DashboardHelper
+  end
+end

app/helpers/admin/payment_methods_helper.rb

@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+module Admin
+  module PaymentMethodsHelper
+  end
+end

app/helpers/admin/subscription_offers_helper.rb

@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+module Admin
+  module SubscriptionOffersHelper
+  end
+end

app/helpers/subscriptions_helper.rb → app/helpers/refunds_helper.rb

@@ -1,4 +1,4 @@
 # frozen_string_literal: true
 
-module SubscriptionsHelper
+module RefundsHelper
 end

app/helpers/sales_helper.rb

@@ -0,0 +1,4 @@
+# frozen_string_literal: true
+
+module SalesHelper
+end