% if ( $row ) {
%# pretty minimal report
<& /elements/header.html, 'E911 Fee Report' &>
<& /elements/table-grid.html &>
<STYLE TYPE="text/css">
table.grid TD:first-child { font-weight: normal }
table.grid TD { font-weight: bold;
                text-align: right;
                padding: 1px 2px }
</STYLE>
  <TR><TH COLSPAN=2><% $legend %></TH></TR>
  <TR>
    <TD>E911 access lines:</TD>
    <TD><% $row->{quantity} || 0 %></TD>
  </TR>
  <TR>
    <TD>Total fees charged: </TD>
    <TD><% $money_char.sprintf('%.2f', $row->{charged_amount}) %></TD>
  </TD>
  <TR>
    <TD>Fee payments collected: </TD>
    <TD><% $money_char.sprintf('%.2f', $row->{paid_amount}) %></TD>
  </TR>
  <TR>
    <TD>Administrative fee (1%): </TD>
    <TD><% $money_char.sprintf('%.2f', $row->{paid_amount} * $admin_fee) %></TD>
  </TR>
  <TR>
    <TD>Amount due: </TD>
    <TD><% $money_char.sprintf('%.2f', $row->{paid_amount} * (1-$admin_fee) ) %>
    </TD>
  </TR>
</TABLE>
<& /elements/footer.html &>
% } else { # no data
%   $cgi->param('error' => 'No paid E911 fees found.');
<& /elements/errorpage.html &>
% }
<%init>

die "access denied"
  unless $FS::CurrentUser::CurrentUser->access_right('Financial reports');

my $money_char = FS::Conf->new->config('money_char') || '$';

my($begin, $end) = FS::UI::Web::parse_beginning_ending($cgi);

$cgi->param('e911pkgpart') =~ /^(\d+)$/;
my $pkgpart = $1 or die 'bad e911pkgpart';

$cgi->param('agentnum') =~ /^(\d*)$/;
my $agentnum = $1;

# This has the potential to become as nightmarish as the old tax report.
# If we end up doing multiple rows for some reason (date intervals, 
# package classes, etc.), do NOT simply loop through this and do a 
# bazillion scalar_sql queries.  Use a properly grouped aggregate query.

my $select = 'SELECT cust_bill_pkg.billpkgnum, cust_bill_pkg.quantity, '.
'cust_bill_pkg.setup, SUM(cust_bill_pay_pkg.amount) AS paid_amount';

my $from = 'FROM cust_pkg
  JOIN cust_bill_pkg      USING (pkgnum)
  JOIN cust_bill          USING (invnum)
  LEFT JOIN cust_bill_pay_pkg  USING (billpkgnum)
  LEFT JOIN cust_bill_pay      USING (billpaynum)
';
# going by payment application date here, which should be
# max(invoice date, payment date)
my $where = "WHERE cust_pkg.pkgpart = $pkgpart
AND ( (cust_bill_pay._date >= $begin AND cust_bill_pay._date < $end)
      OR cust_bill_pay.paynum IS NULL )";

if ( $agentnum ) {
  $from .= '  JOIN cust_main ON (cust_pkg.custnum = cust_main.custnum)';
  $where .= "\n AND cust_main.agentnum = $agentnum";
}

my $subquery = "$select $from $where
GROUP BY cust_bill_pkg.billpkgnum, cust_bill_pkg.quantity";
# This has one row for each E911 line item that has any payments applied.
# Fields are the billpkgnum of the item (currently unused), the number of
# E911 charges, and the total amount paid (always > 0).

# now sum those rows.
my $sql = "SELECT SUM(quantity) AS quantity, SUM(setup) AS charged_amount,
SUM(paid_amount) AS paid_amount FROM ($subquery) AS paid_fees"; # no grouping

my $sth = dbh->prepare($sql);
$sth->execute;
my $row = $sth->fetchrow_hashref;

my $admin_fee = 0.01; # 1% admin fee, allowed in Texas

$end = '' if $end == 4294967295;
my $legend = '';
if ( $agentnum ) {
  $legend = FS::agent->by_key($agentnum)->agent . ', ';
}
if ( $begin and $end ) {
  $legend .= time2str('%h %o %Y', $begin) . '&mdash;' .
             time2str('%h %o %Y', $end);
} elsif ( $begin ) {
  $legend .= time2str('after %h %o %Y', $begin);
} elsif ( $end ) {
  $legend .= time2str('before %h %o %Y', $end);
} else {
  $legend .= 'any time';
}
$legend = ucfirst($legend);
</%init>