Features/pdf receipt

Gemfile

@@ -41,6 +41,10 @@ gem 'mustache'
 
 gem 'dotenv-rails'
 
+gem "prawn", :github => "prawnpdf/prawn"
+gem "prawn-table", "= 0.1.0"
+gem "prawn-receipt"
+
 group :development do
   gem 'dotenv-deployment'
   gem 'capistrano'

Gemfile.lock

@@ -1,3 +1,11 @@
+GIT
+  remote: git://github.com/prawnpdf/prawn.git
+  revision: 6d175ab27663119513eedbfdd3413c13d2566854
+  specs:
+    prawn (1.3.0)
+      pdf-core (~> 0.4.0)
+      ttfunk (~> 1.3.0)
+
 GEM
   remote: https://rubygems.org/
   specs:
@@ -204,6 +212,7 @@ GEM
       slop (~> 3.4, >= 3.4.5)
     parsley-rails (1.2.2.0)
       railties (>= 3.0.0)
+    pdf-core (0.4.0)
     pg (0.16.0)
     poltergeist (1.1.2)
       capybara (~> 2.0.1)
@@ -212,6 +221,8 @@ GEM
     polyglot (0.3.5)
     posix-spawn (0.3.6)
     powerpack (0.0.9)
+    prawn-receipt (0.0.1)
+    prawn-table (0.1.0)
     rack (1.4.5)
     rack-cache (1.2)
       rack (>= 0.4)
@@ -307,6 +318,7 @@ GEM
     treetop (1.4.15)
       polyglot
       polyglot (>= 0.3.1)
+    ttfunk (1.3.0)
     turbo-sprockets-rails3 (0.3.9)
       railties (> 3.2.8, < 4.0.0)
       sprockets (>= 2.0.0)
@@ -375,6 +387,9 @@ DEPENDENCIES
   parsley-rails
   pg (= 0.16.0)
   poltergeist
+  prawn!
+  prawn-receipt
+  prawn-table (= 0.1.0)
   rack-google_analytics
   rack-pjax (~> 0.6.0)
   rails (= 3.2.17)

app/mailers/account_mailer.rb

@@ -23,9 +23,30 @@ def failed_payment(user, charge)
 
   def payment_created(user, payment)
     @payment = payment
+    file = Tempfile.new('receipt.pdf')
+    begin
+      logo_image_path = File.expand_path("../assets/images/pr-logo.png",
+                                   File.dirname(__FILE__))
 
-    mail(:to      => user.contact_email,
-         :subject => "Receipt for your payment to practicingruby.com").deliver
+      receipt = Prawn::Receipt.new :logo_image_path => logo_image_path,
+                                   :company_name    => "Practicing Ruby",
+                                   :company_email   => "gregory@practicingruby.com",
+                                   :customer_email  => user.contact_email,
+                                   :customer_name   => user.name,
+                                   :amount_billed   => @payment.amount,
+                                   :credit_card     => "xxxx-xxxx-xxxx-#{@payment.credit_card_last_four}",
+                                   :transaction_id  => @payment.id
+
+      receipt.render_file file.path
+
+      attachments["receipt.pdf"] = File.read file.path
+      mail(:to      => user.contact_email,
+           :subject => "Receipt for your payment to practicingruby.com"
+          ).deliver
+    ensure
+      file.close
+      file.unlink
+    end
 
     @payment.update_attributes(:email_sent => true)
   end

test/unit/stripe/payment_gateway_test.rb

@@ -5,8 +5,10 @@ class StripePaymentGatewayTest < ActiveSupport::TestCase
   setup do
     ActionMailer::Base.deliveries.clear
 
-    @user            = FactoryGirl.create(:user, :payment_provider => 'stripe')
-    @payment_gateway = @user.payment_gateway
+    @user             = FactoryGirl.create(:user, :payment_provider => 'stripe')
+    @credit_card      = FactoryGirl.create(:credit_card)
+    @user.credit_card = @credit_card
+    @payment_gateway  = @user.payment_gateway
   end
 
   test 'for_customer' do
@@ -94,7 +96,16 @@ class StripePaymentGatewayTest < ActiveSupport::TestCase
 
     message = ActionMailer::Base.deliveries.first
 
-    assert message.body.to_s[/#{payment.invoice_date}/], "Invoice date missing"
+    if message.has_attachments?
+      assert message.text_part.body.to_s[/#{payment.invoice_date}/], "Invoice date missing"
+    else
+      assert message.body.to_s[/#{payment.invoice_date}/], "Invoice date missing"
+    end
+
+    assert message.attachments.length >= 1, "No attachment"
+    File.open("/tmp/receipt_test.pdf", "wb") do |f|
+      f.write message.attachments['receipt.pdf'].body.raw_source
+    end
   end
 
   test 'update_credit_card' do