From ea78905fec4d959970907e7abcb80b0f4848ca32 Mon Sep 17 00:00:00 2001
From: Paul van Tilburg <paul@luon.net>
Date: Thu, 3 Nov 2011 11:40:58 +0100
Subject: [PATCH] Added (not so clean) invoice PDF generation.

---
 stoptime.rb               | 38 +++++++++++++---
 templates/invoice.tex.erb | 91 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 124 insertions(+), 5 deletions(-)
 create mode 100644 templates/invoice.tex.erb

diff --git a/stoptime.rb b/stoptime.rb
index 4f7d6c4..3dfdaf3 100644
--- a/stoptime.rb
+++ b/stoptime.rb
@@ -27,7 +27,8 @@ unless defined? PUBLIC_DIR
   ActiveSupport::CoreExtensions::Time::Conversions::DATE_FORMATS.merge!(
     :default => "%Y-%m-%d %H:%M",
     :month_and_year => "%B %Y",
-    :month_code => "%Y%m")
+    :month_code => "%Y%m",
+    :day_code => "%Y%m%d")
   ActiveSupport::CoreExtensions::Date::Conversions::DATE_FORMATS.merge!(
     :default => "%Y-%m-%d",
     :month_and_year => "%B %Y")
@@ -195,14 +196,41 @@ module StopTime::Controllers
   end
 
   class CustomersNInvoicesX
-    def get(customer_id, number)
-      @month = DateTime.new(number[0..3].to_i, number[4..5].to_i, 1)
-      @number = number[5..-1].to_i
+    def get(customer_id, invoice_id)
+      @month = DateTime.new(invoice_id[0..3].to_i, invoice_id[4..5].to_i, 1)
+      @number = invoice_id[6..-1]
+      # FIXME: make this (much) nicer!
+      invoice_id.gsub!(/\.pdf$/, '')
+      if m = @number.match(/(\d+)\.(\w+)$/)
+        @number = m[1].to_i
+        @format = m[2]
+      else
+        @number = @number.to_i
+        @format = "html"
+      end
 
       @customer = Customer.find(customer_id)
       @tasks = @customer.task_summary(@month)
 
-      render :invoice
+      if @format == "html"
+        render :invoice
+      elsif @format == "pdf"
+        pdf_file = PUBLIC_DIR + "#{invoice_id}.pdf"
+        unless pdf_file.exist?
+          _generate_invoice_pdf(@customer, @tasks, @month, invoice_id)
+        end
+        redirect(StaticX, pdf_file.basename)
+      end
+    end
+
+    def _generate_invoice_pdf(customer, tasks, month, invoice_id)
+      template = TEMPLATE_DIR + "invoice.tex.erb"
+      tex_file = PUBLIC_DIR + "#{invoice_id}.tex"
+
+      erb = ERB.new(File.read(template))
+      File.open(tex_file, "w") { |f| f.write(erb.result(binding)) }
+      system("rubber --pdf --inplace #{tex_file}")
+      system("rubber --clean --inplace #{tex_file}")
     end
   end
 
diff --git a/templates/invoice.tex.erb b/templates/invoice.tex.erb
new file mode 100644
index 0000000..e952603
--- /dev/null
+++ b/templates/invoice.tex.erb
@@ -0,0 +1,91 @@
+\documentclass[a4paper,12pt,oneside,dutch]{isodoc}
+
+\usepackage{array}
+\setupdocument{
+  % Language and style,
+  dutch,
+  fill,
+  fontpackage=pxfonts,
+  % Company info.
+  company=,
+  who=Foo Bedrijf,
+  street=Zomaareenstraat 123,
+  city=Ergens,
+  zip=1234~ZZ,
+  country=The Netherlands,
+  countrycode=NL,
+  logoaddress={\hspace{-4.4em}
+               \begin{tabular}{l@{\ }l}
+                \addresstext:   & \who\\
+                                & \street\\
+                                & \zip\ \city\\[.2em]
+                \cellphonetext: & \lead\cellphone\\
+                \emailtext:     & \email\\[.2em]
+               \end{tabular}},
+  % Footer.
+  areacode=31,
+  cellphone=6-12345678,
+  email=info@foobedrijf.nl,
+  % Addressee info.
+  %foreign,
+  to={<%= customer.name %>\\<%= customer.address_street%>\\
+      <%= customer.address_postal_code %> <%= customer.address_city %>},
+  % Headlines.
+  date=<%= DateTime.now.to_formatted_s(:day_code) %>,
+  ourref=<%= invoice_id %>,
+  subject=Factuur <%= month.to_formatted_s(:month_and_year) %>,
+  yourref=,
+  % Payment data.
+  term=30,
+  accountno=12.34.567.890,
+  accountname=Foo Bedrijf,
+}
+\newcommand{\addresstext}{adres}
+\renewcommand{\chambertext}{KvK-nr}
+\renewcommand{\datetext}{Factuurdatum}
+\renewcommand{\emailtext}{e-mail}
+\renewcommand{\invoicetext}{\Large\textbf{Factuur}}
+\renewcommand{\ourreftext}{Factuurnummer}
+\renewcommand{\referencetext}{factuurnummer}
+\renewcommand{\vatnotext}{btw-nr}
+\renewcommand{\websitetext}{website}
+
+\newenvironment{ihtable}%
+ %{\vskip1em\tabularx{\linewidth}{@{}X@{\ \barsep\quad}|r@{\ \barsep\quad}r@{\ \barsep\quad}r@{}}
+ {\vskip1em\tabularx{\linewidth}{@{}X|@{\quad}r|@{\quad}r|@{\quad}r@{}}
+   \descriptiontext&Aantal uur&Uurtarief&\amounttext\ML}%
+ {\endtabularx}
+\newcommand{\ihitem}[4]{#1&#2&\currency~#3&\currency~#4\\}
+\newcommand{\ihsubtotal}[1]{\cmidrule[.0em]{4-4}%
+  \textit{Subtotaal}&&&\currency~#1\\}
+\newcommand{\inosubtotal}{&&&\\}
+\newcommand{\ihvat}[1]{\textit{Btw-heffing 19\%}&&&\currency~#1\\}
+\newcommand{\ihtotal}[1]{\cmidrule[.05em]{4-4}%
+  \textbf{\Totaltext}&&&\textbf{\currency~#1}}
+
+\begin{document}
+
+\invoice{
+ \hypersetup{pdftitle=\invoicetext\ naar\ \toname\ gedateerd \date\ (\ourref)}
+
+ \begin{ihtable}
+  <% total = 0.0 %>
+  <% tasks.each do |task, line| %>
+  \ihitem{<%= task.name %>}{<% "%.2f" % line[0] %>}%
+         {<%= "%.2f" % line[1] %>}{<%= "%.2f" % line[2] %>}
+  <% total += line[2] %>
+  <% end %>
+  %\ihsubtotal{...}
+  \inosubtotal
+  %\ihvat{...}
+  \ihtotal{<%= "%.2f" % total %>}
+ \end{ihtable}
+ \vspace{2em}
+
+ Ik verzoek u vriendelijk het verschuldigde bedrag binnen 30 dagen na
+ factuurdatum over te maken onder vermelding van het factuurnummer. \\
+
+ \accountdata
+}
+
+\end{document}