add a useful debugging tool

diff --git a/httemplate/view/cust_bill-tex.cgi b/httemplate/view/cust_bill-tex.cgi
new file mode 100755 (executable)
index 0000000..8133769
--- /dev/null
+++ b/httemplate/view/cust_bill-tex.cgi
@@ -0,0 +1,51 @@
+<% $tex %>
+<%init>
+
+use File::Slurp 'slurp';
+
+die "access denied"
+  unless $FS::CurrentUser::CurrentUser->access_right('View invoices');
+
+my( $invnum, $mode, $template, $notice_name );
+my($query) = $cgi->keywords;
+if ( $query =~ /^((.+)-)?(\d+)(.pdf)?$/ ) { #probably not necessary anymore?
+  $template = $2;
+  $invnum = $3;
+  $notice_name = 'Invoice';
+} else {
+  $invnum = $cgi->param('invnum');
+  $invnum =~ s/\.pdf//i; #probably not necessary anymore
+  $template = $cgi->param('template');
+  $notice_name = ( $cgi->param('notice_name') || 'Invoice' );
+  $mode = $cgi->param('mode');
+}
+
+my $conf = new FS::Conf;
+
+my %opt = (
+  'unsquelch_cdr' => $conf->exists('voip-cdr_email'),
+  'template'      => $template,
+  'notice_name'   => $notice_name,
+  'no_coupon'     => ($cgi->param('no_coupon') || 0)
+);
+
+my $cust_bill = qsearchs({
+  'select'    => 'cust_bill.*',
+  'table'     => 'cust_bill',
+  'addl_from' => 'LEFT JOIN cust_main USING ( custnum )',
+  'hashref'   => { 'invnum' => $invnum },
+  'extra_sql' => ' AND '. $FS::CurrentUser::CurrentUser->agentnums_sql,
+});
+die "Invoice #$invnum not found!" unless $cust_bill;
+
+$cust_bill->set(mode => $mode);
+
+my ($file) = $cust_bill->print_latex(\%opt);
+my $tex = slurp("$file.tex");
+
+http_header('Content-Type' => 'text/plain' );
+http_header('Content-Disposition' => "filename=$invnum.tex" );
+http_header('Content-Length' => length($tex) );
+http_header('Cache-control' => 'max-age=60' );
+
+</%init>