\documentclass[a4paper,12pt,oneside,dutch]{isodoc}

% rubber: clean <%= number %>.out

\usepackage{array}
\usepackage[utf8]{inputenc}
\setupdocument{
  %% Language and style,
  dutch,
  fill,
  fontpackage=pxfonts,
  %% Company info.
  company=<%= @company.name %>,
  who=<%= @company.contact_name %>,
  street=<%= @company.address_street %>,
  zip=<%= @company.address_postal_code %>,
  city=<%= @company.address_city %>,
  country=<%= @company.country %>,
  countrycode=<%= @company.country_code %>,
  logoaddress={\hspace{-4.4em}
               \begin{tabular}{l@{\ }l}
<% if @company.name.blank? %>                \addresstext:    & \who\\
<% else %>                \addresstext:    & \company \\
<% unless @company.contact_name.blank? %>                \addresswhotext: & \who \\
<% end %><% end %>                                 & \street\\
                                 & \zip\ \city\\[.2em]
<% unless @company.phone.blank? %>          \phonetext:      & \lead\phone\\
<% end %><% unless @company.cell.blank? %>                \cellphonetext:  & \lead\cellphone\\
<% end %><% unless @company.email.blank? %>                \emailtext:      & \email\\[.2em]
<% end %><% unless @company.chamber.blank? %>                \chambertext:    & \chamber\\
<% end %><% unless @company.vatno.blank? %>                \vatnotext:      & \vatno
<% end %>               \end{tabular}},
  %% Footer.
<% unless @company.website.blank? %>  footer,<% end %>
  areacode=31,
  phone=<%= @company.phone %>,
  cellphone=<%= @company.cell %>,
  email=<%= @company.email %>,
  website=<%= @company.website %>,
  %% 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=<%= number %>,
  subject=Factuur <%= @month.to_formatted_s(:month_and_year) %>,
  yourref=,
  %% Payment data.
  term=30,
  accountno=<%= @company.accountno %>,
  accountname=<%= @company.accountname %>,
<% unless @company.vatno.blank? %>  vatno=<%= @company.vatno %>,
<% end %><% unless @company.chamber.blank? %>  chamber=<%= @company.chamber %>
<% end %>}

\newcommand{\addresstext}{adres}
\newcommand{\addresswhotext}{t.n.v.}
\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|@{\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 <%= VATRate %>\%}&&&\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}
  <% subtotal = 0.0 %>
  <% tasks.each do |task, line| %>
  \ihitem{<%= task.name %>}{<%= "%.2f" % line[0] %>}%
         {<%= "%.2f" % line[1] %>}{<%= "%.2f" % line[2] %>}
  <% subtotal += line[2] %>
  <% end %>
  \ihsubtotal{<%= "%.2f" % subtotal %>}
  %\inosubtotal
  <% vat = subtotal * VATRate/100 %>
  \ihvat{<%= "%.2f" % vat %>}
  \ihtotal{<%= "%.2f" % (subtotal + vat) %>}
 \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}