<& elements/search.html,
                 'title'       => emt('Line items'),
                 'name'        => emt('line items'),
                 'query'       => $query,
                 'count_query' => $count_query,
                 'count_addl'  => \@total_desc,
                 'header'      => [
                   @pkgnum_header,
                   emt('Pkg Def'),
                   emt('Description'),
                   @post_desc_header,
                   @peritem_desc,
                   @currency_desc,
                   emt('Invoice'),
                   emt('Date'),
                   emt('Paid'),
                   emt('Credited'),
                   FS::UI::Web::cust_header(),
                 ],
                 'fields'      => [
                   @pkgnum,
                   sub { $_[0]->pkgnum > 0
                           ? $_[0]->get('pkgpart')
                           : ''
                       },
                   'itemdesc', # is part_pkg.pkg if applicable
                   @post_desc,
                   #strikethrough or "N/A ($amount)" or something these when
                   # they're not applicable to pkg_tax search
                   @peritem_sub,
                   @currency_sub,
                   'invnum',
                   sub { time2str('%b %d %Y', shift->_date ) },
                   sub { sprintf($money_char.'%.2f', shift->get('pay_amount')) },
                   sub { sprintf($money_char.'%.2f', shift->get('credit_amount')) },
                   \&FS::UI::Web::cust_fields,
                 ],
                 'sort_fields' => [
                   @pkgnum_null,
                   '',
                   '',
                   @post_desc_null,
                   @peritem,
                   @currency,
                   'invnum',
                   '_date',
                   'pay_amount',
                   'credit_amount',
                   FS::UI::Web::cust_sort_fields(),
                 ],
                 'links'       => [
                   @pkgnum_null,
                   '',
                   '',
                   @post_desc_null,
                   @peritem_null,
                   @currency_null,
                   $ilink,
                   $ilink,
                   $pay_link,
                   $credit_link,
                   ( map { $_ ne 'Cust. Status' ? $clink : '' }
                         FS::UI::Web::cust_header()
                   ),
                 ],
                 #'align' => 'rlrrrc'.FS::UI::Web::cust_aligns(),
                 'align' => $pkgnum_align.
                            'rl'.
                            $post_desc_align.
                            $peritem_align.
                            $currency_align.
                            'rcrr'.
                            FS::UI::Web::cust_aligns(),
                 'color' => [ 
                              @pkgnum_null,
                              '',
                              '',
                              @post_desc_null,
                              @peritem_null,
                              @currency_null,
                              '',
                              '',
                              '',
                              '',
                              FS::UI::Web::cust_colors(),
                            ],
                 'style' => [ 
                              @pkgnum_null,
                              '',
                              '',
                              @post_desc_null,
                              @peritem_null,
                              @currency_null,
                              '',
                              '',
                              '',
                              '',
                              FS::UI::Web::cust_styles(),
                            ],
&>
<%doc>

Output control parameters:
- distribute: Boolean.  If true, recurring fees will be "prorated" for the 
  portion of the package date range (sdate-edate) that falls within the date
  range of the report.  Line items will be limited to those for which this 
  portion is > 0.  This disables filtering on invoice date.

- charges: 'S'etup, 'R'ecur, 'U'sage, or any string combination of those.

Filtering parameters:
- begin, end: Date range.  Applies to invoice date, not necessarily package
  date range.  But see "distribute".

- status: Customer status (active, suspended, etc.).  This will filter on 
  _current_ customer status, not status at the time the invoice was generated.

- agentnum: Filter on customer agent.

- refnum: Filter on customer reference source.

- cust_classnum: Filter on customer class.

- classnum: Filter on package class.

- report_optionnum: Filter on package report class.  Can be a single report
  class number or a comma-separated list (where 0 is "no report class"), or the
  word "multiple".

- use_override: Apply "classnum" and "taxclass" filtering based on the 
  override (bundle) pkgpart, rather than always using the true pkgpart.

- nottax: Limit to items that are not taxes (pkgnum > 0 or feepart > 0).

- istax: Limit to items that are taxes (pkgnum == 0 and feepart = null).

- taxnum: Limit to items whose tax definition matches this taxnum.
  With "nottax" that means items that are subject to that tax;
  with "istax" it's the tax charges themselves.  Can be a comma-separated
  list to include multiple taxes.

- country, state, county, city: Limit to items whose tax location 
  matches these fields.  If "nottax" it's the tax location of the package;
  if "istax" the location of the tax.

- taxname, taxnameNULL: With "nottax", limit to items whose tax location
  matches a tax with this name.  With "istax", limit to items that have
  this tax name.  taxnameNULL is equivalent to "taxname = '' OR taxname 
  = 'Tax'".

- out: With "nottax", limit to items that don't match any tax definition.
  With "istax", find tax items that are unlinked to their tax definitions.
  Current Freeside (> July 2012) always creates tax links, but unlinked
  items may result from an incomplete upgrade of legacy data.

- locationtaxid: With "nottax", limit to packages matching this 
  tax_rate_location ID; with "tax", limit to taxes generated from that 
  location.

- taxclass: Filter on package taxclass.

- taxclassNULL: With "nottax", limit to items that would be subject to the
  tax with taxclass = NULL.  This doesn't necessarily mean part_pkg.taxclass
  is NULL; it also includes taxclasses that don't have a tax in this region.

- itemdesc: Limit to line items with this description.  Note that non-tax
  packages usually have a description of NULL.  (Deprecated.)

- report_group: Can contain '=' or '!=' followed by a string to limit to 
  line items where itemdesc starts with, or doesn't start with, the string.

- cust_tax: Limit to customers who are tax-exempt.  If "taxname" is also
  specified, limit to customers who are also specifically exempt from that 
  tax.

- pkg_tax: Limit to packages that are tax-exempt, and only include the 
  exempt portion (setup, recurring, or both) when calculating totals.

- taxable: Limit to packages that are subject to tax, i.e. where a
  cust_bill_pkg_tax_location record exists.

- credit: Limit to line items that received a credit application.  The
  amount of the credit will also be shown.

</%doc>
<%init>

my $curuser = $FS::CurrentUser::CurrentUser;

die "access denied" unless $curuser->access_right('Financial reports');

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

my @select = ( 'cust_bill_pkg.*', 'cust_bill._date' );
my @total = ( 'COUNT(*)' );
my @total_desc = ();

my @peritem = ( 'setup', 'recur' );
my @peritem_desc = ( 'Setup charges', 'Recurring charges' );

my @currency_desc = ();
my @currency_sub = ();
my @currency = ();
if ( $conf->config('currencies') ) {
  @currency_desc = ( 'Setup billed', 'Recurring billed' );
  @currency_sub = (
    map {
      my $what = $_;
      sub { my $currency = $_[0]->get($what.'_billed_currency') or return '';
            $currency. ' '. currency_symbol($currency, SYM_HTML).
              $_[0]->get($what.'_billed_amount');
          };
    } qw( setup recur )
  );
  @currency = ( 'setup_billed_amount', 'recur_billed_amount' ); #for sorting
}

my @pkgnum_header = ();
my @pkgnum = ();
my @pkgnum_null;
my $pkgnum_align = '';
if ( $curuser->option('show_pkgnum') ) {
  push @select, 'cust_bill_pkg.pkgnum';
  push @pkgnum_header, 'Pkg Num';
  push @pkgnum, sub { $_[0]->pkgnum > 0 ? $_[0]->pkgnum : '' };
  push @pkgnum_null, '';
  $pkgnum_align .= 'r';
}

my @post_desc_header = ();
my @post_desc = ();
my @post_desc_null = ();
my $post_desc_align = '';
if ( $conf->exists('enable_taxclasses') ) {
  push @post_desc_header, 'Tax class';
  push @post_desc, 'taxclass';
  push @post_desc_null, '';
  $post_desc_align .= 'l';
}

# used in several places
my $itemdesc = 'COALESCE(cust_bill_pkg.itemdesc, part_fee.itemdesc, part_pkg.pkg, cust_bill_pkg.itemdesc)';

# valid in both the tax and non-tax cases
my $join_cust = 
  " LEFT JOIN cust_bill ON (cust_bill_pkg.invnum = cust_bill.invnum)".
  # use cust_pkg.locationnum if it exists
  FS::UI::Web::join_cust_main('cust_bill', 'cust_pkg');

#agent virtualization
my $agentnums_sql =
  $FS::CurrentUser::CurrentUser->agentnums_sql( 'table' => 'cust_main' );

my @where = ( $agentnums_sql );

# date range
my($beginning, $ending) = FS::UI::Web::parse_beginning_ending($cgi);

if ( $cgi->param('distribute') == 1 ) {
  push @where, "sdate <= $ending",
               "edate >  $beginning",
  ;
} else {
  push @where, "cust_bill._date >= $beginning",
               "cust_bill._date <= $ending";
}

# status
if ( $cgi->param('status') =~ /^([a-z]+)$/ ) {
  push @where, FS::cust_main->cust_status_sql . " = '$1'";
}

# agentnum
if ( $cgi->param('agentnum') =~ /^(\d+)$/ ) {
  push @where, "cust_main.agentnum = $1";
}

# salesnum--see below
# refnum
if ( $cgi->param('refnum') =~ /^(\d+)$/ ) {
  push @where, "cust_main.refnum = $1";
}

# cust_classnum (false laziness w/ elements/cust_main_dayranges.html, elements/cust_pay_or_refund.html, prepaid_income.html, cust_bill_pay.html, cust_bill_pkg_referral.html, unearned_detail.html, cust_credit.html, cust_credit_refund.html, cust_main::Search::search_sql)
if ( grep { $_ eq 'cust_classnum' } $cgi->param ) {
  my @classnums = grep /^\d*$/, $cgi->param('cust_classnum');
  push @where, 'COALESCE( cust_main.classnum, 0) IN ( '.
                   join(',', map { $_ || '0' } @classnums ).
               ' )'
    if @classnums;
}


# custnum
if ( $cgi->param('custnum') =~ /^(\d+)$/ ) {
  push @where, "cust_main.custnum = $1";
}

# we want the package and its definition if available
my $join_pkg = 
' LEFT JOIN cust_pkg      USING (pkgnum) 
  LEFT JOIN part_pkg      USING (pkgpart)
  LEFT JOIN part_fee      USING (feepart)';

my $part_pkg = 'part_pkg';
# "Separate sub-packages from parents"
my $use_override = $cgi->param('use_override') ? 1 : 0;
if ( $use_override ) {
  # still need the real part_pkg for tax applicability, 
  # so alias this one
  $join_pkg .= " LEFT JOIN part_pkg AS override ON (
  COALESCE(cust_bill_pkg.pkgpart_override, cust_pkg.pkgpart, 0) = override.pkgpart
  )";
  $part_pkg = 'override';
}
push @select, "$part_pkg.pkgpart", "$part_pkg.pkg";
push @select, "($itemdesc) AS itemdesc"; # available in all report modes

push @select, "COALESCE($part_pkg.taxclass, part_fee.taxclass) AS taxclass"
  if $conf->exists('enable_taxclasses');

# the non-tax case
if ( $cgi->param('nottax') ) {

  push @where,
    '(cust_bill_pkg.pkgnum > 0 OR cust_bill_pkg.feepart IS NOT NULL)';

  my @tax_where; # will go into a subquery
  my @exempt_where; # will also go into a subquery

  # classnum (of override pkgpart if applicable)
  # not specified: all classes
  # 0: empty class
  # N: classnum
  if ( grep { $_ eq 'classnum' } $cgi->param ) {
    my @classnums = grep /^\d+$/, $cgi->param('classnum');
    push @where, "COALESCE(part_fee.classnum, $part_pkg.classnum, 0) IN ( ".
                     join(',', @classnums ).
                 ' )'
      if @classnums;
  }

  if ( grep { $_ eq 'report_optionnum' } $cgi->param ) {
    my $num = join(',', grep /^[\d,]+$/, $cgi->param('report_optionnum'));
    my $not_num = join(',', grep /^[\d,]+$/, $cgi->param('not_report_optionnum'));
    my $all = $cgi->param('all_report_options') ? 1 : 0;
    push @where, # code reuse FTW
      FS::Report::Table->with_report_option(
        report_optionnum      => $num,
        not_report_optionnum  => $not_num,
        use_override          => $use_override,
        all_report_options    => $all,
      );
  }

  # taxclass
  if ( $cgi->param('taxclassNULL') ) {
    # a little different from 'taxclass' in that it applies to the
    # effective taxclass, not the real one
    push @tax_where, 'cust_main_county.taxclass IS NULL'
  } elsif ( $cgi->param('taxclass') ) {
    push @tax_where, "COALESCE(part_fee.taxclass, $part_pkg.taxclass) IN (" .
                 join(', ', map {dbh->quote($_)} $cgi->param('taxclass') ).
                 ')';
  }

  if ( $cgi->param('exempt_cust') eq 'Y' ) {
    # tax-exempt customers
    push @exempt_where, "(exempt_cust = 'Y' OR exempt_cust_taxname = 'Y')";

  } elsif ( $cgi->param('exempt_pkg') eq 'Y' ) { # non-taxable package
    # non-taxable package charges
    push @exempt_where, "(exempt_setup = 'Y' OR exempt_recur = 'Y')";
  }
  # we don't handle exempt_monthly here
  
  if ( $cgi->param('taxname') ) { # specific taxname
      push @tax_where, "COALESCE(cust_main_county.taxname, 'Tax') = ".
                        dbh->quote($cgi->param('taxname'));
  }

  # country:state:county:city:district (may be repeated)
  # You can also pass a big list of taxnums but that leads to huge URLs.
  # Note that this means "packages whose tax is in this region", not 
  # "packages in this region".  It's meant for links from the tax report.
  if ( $cgi->param('region') ) {
    my @orwhere;
    foreach ( $cgi->param('region') ) {
      my %loc;
      @loc{qw(country state county city district)} = 
        split(':', $cgi->param('region'));
      my $string = join(' AND ',
            map { 
              if ( $loc{$_} ) {
                "$_ = ".dbh->quote($loc{$_});
              } else {
                "$_ IS NULL";
              }
            } keys(%loc)
      );
      push @orwhere, "($string)";
    }
    push @tax_where, '(' . join(' OR ', @orwhere) . ')' if @orwhere;
  }

  # specific taxnums
  if ( $cgi->param('taxnum') =~ /^([\d,]+)$/) {
    push @tax_where, "cust_main_county.taxnum IN ($1)";
  }

  # If we're showing exempt items, we need to find those with 
  # cust_tax_exempt_pkg records matching the selected taxes.
  # If we're showing taxable items, we need to find those with 
  # cust_bill_pkg_tax_location records.  We also need to find the 
  # exemption records so that we can show the taxable amount.
  # If we're showing all items, we need the union of those.
  # If we're showing 'out' (items that aren't region/class taxable),
  # then we need the set of all items minus the union of those.

  # Always exclude cust_tax_exempt_pkg records with non-NULL creditbillpkgnum.

  if ( $cgi->param('out') ) {
    # separate from the rest, in that we're not going to join cust_main_county
    # in the outer query

    my @exclude = ( 'cust_tax_exempt_pkg.billpkgnum',
                    'cust_bill_pkg_tax_location.taxable_billpkgnum'
                  );
    foreach my $col (@exclude) {
      my ($table) = split(/\./, $col);
      my $this_where = 'WHERE ' .  join(' AND ',
        "$col = cust_bill_pkg.billpkgnum",
        @tax_where
      );

      push @where,
      "NOT EXISTS(SELECT 1 FROM $table
        JOIN cust_main_county USING (taxnum)
        $this_where
      )";
    }
  
  } else {
    # everything that returns things joined to a tax definition

    if ( @exempt_where or @tax_where or $cgi->param('taxable') ) {

      push @exempt_where, "cust_tax_exempt_pkg.creditbillpkgnum IS NULL";

      # process exemption restrictions, including @tax_where
      my $exempt_sub = 'SELECT SUM(amount) as exempt_amount, billpkgnum 
      FROM cust_tax_exempt_pkg JOIN cust_main_county USING (taxnum)';

      $exempt_sub .= ' WHERE '.join(' AND ', @tax_where, @exempt_where);

      $exempt_sub .= ' GROUP BY billpkgnum';

      $join_pkg .= " LEFT JOIN ($exempt_sub) AS item_exempt
      ON (cust_bill_pkg.billpkgnum = item_exempt.billpkgnum)";

    }

    if ( @tax_where or $cgi->param('taxable') ) {
      # process tax restrictions
      unshift @tax_where,
        'cust_main_county.tax > 0';

      my $tax_sub = "SELECT taxable_billpkgnum
      FROM cust_bill_pkg_tax_location
      JOIN cust_main_county USING (taxnum)
      WHERE ". join(' AND ', @tax_where).
      " GROUP BY taxable_billpkgnum";

      $join_pkg .= " LEFT JOIN ($tax_sub) AS item_tax
      ON (cust_bill_pkg.billpkgnum = item_tax.taxable_billpkgnum)"
    }

    # now do something with that
    if ( $cgi->param('taxable') ) {
      # taxable query: needs sale amount - exempt amount
      my $taxable = 'cust_bill_pkg.setup + cust_bill_pkg.recur '.
                    '- COALESCE(item_exempt.exempt_amount, 0)';

      push @where, "item_tax.taxable_billpkgnum IS NOT NULL";
      push @select,   "($taxable) AS taxable_amount";
      push @peritem,  'taxable_amount';
      push @peritem_desc, 'Taxable';
      push @total,    "SUM($taxable)";
      push @total_desc, "$money_char%.2f taxable";

    } elsif ( $cgi->param('exempt_cust') or $cgi->param('exempt_pkg') ) {

      push @where,    'item_exempt.billpkgnum IS NOT NULL';
      push @select,   'item_exempt.exempt_amount';
      push @peritem,  'exempt_amount';
      push @peritem_desc, 'Exempt';
      push @total,    'SUM(exempt_amount)';
      push @total_desc, "$money_char%.2f tax-exempt";

    } elsif ( @tax_where ) {
      # union of taxable + all exempt_ cases
      push @where,
        '(item_tax.taxable_billpkgnum IS NOT NULL OR item_exempt.billpkgnum IS NOT NULL)';

    }

  } # handle all joins to cust_main_county

  # setup/recur/usage separation
  my %charges = map { $_ => 1 } split('', $cgi->param('charges') || 'SRU');

  if ( $charges{S} and $charges{R} and $charges{U} ) {
    # in this case, show discounts

    $join_pkg .= ' JOIN (
    SELECT billpkgnum, COALESCE(SUM(amount), 0) AS discounted
      FROM cust_bill_pkg_discount RIGHT JOIN cust_bill_pkg USING (billpkgnum)
      GROUP BY billpkgnum
    ) AS _discount ON (cust_bill_pkg.billpkgnum = _discount.billpkgnum)
    ';
    push @select, '_discount.discounted';

    push @peritem, 'discounted';
    push @peritem_desc, 'Discount';
    push @total, 'SUM(cust_bill_pkg.setup + cust_bill_pkg.recur + discounted)',
                 'SUM(discounted)',
                 'SUM(cust_bill_pkg.setup + cust_bill_pkg.recur)';
    push @total_desc, "$money_char%.2f gross sales",
                      "&minus; $money_char%.2f discounted",
                      "= $money_char%.2f invoiced";

  } elsif ( $charges{R} and $charges{U} ) {

    # hide rows with no recurring fee, and show the sum of recurring fees only
    push @where, 'cust_bill_pkg.recur > 0';
    push @total, "SUM(cust_bill_pkg.recur)";
    push @total_desc, "$money_char%.2f recurring";

  } elsif ( $charges{R} and !$charges{U} ) {

    my $recur_no_usage = FS::cust_bill_pkg->charged_sql('', '', 
      setuprecur => 'recur', no_usage => 1);
    push @select, "($recur_no_usage) AS recur_no_usage";
    $peritem[1] = 'recur_no_usage';
    $peritem_desc[1] = 'Recurring charges (excluding usage)';
    push @total, "SUM($recur_no_usage)";
    push @total_desc, "$money_char%.2f recurring";
    if ( !$charges{S} ) {
      push @where, "($recur_no_usage) > 0";
    }

  } elsif ( !$charges{R} and $charges{U} ) {

    my $usage = FS::cust_bill_pkg->usage_sql();
    push @select, "($usage) AS _usage";
    # there's already a method named 'usage'
    $peritem[1] = '_usage';
    $peritem_desc[1] = 'Usage charge';
    push @total, "SUM($usage)";
    push @total_desc, "$money_char%.2f usage charges";
    if ( !$charges{S} ) {
      push @where, "($usage) > 0";
    }

  } elsif ( $charges{S} ) {

    push @where, "cust_bill_pkg.setup > 0";
    push @total, "SUM(cust_bill_pkg.setup)";
    push @total_desc, "$money_char%.2f setup";

  } # else huh? you have to have SOME charges

} elsif ( $cgi->param('istax') ) {

  # ensure that it is a tax:
  push @where, 'cust_bill_pkg.pkgnum = 0',
               'cust_bill_pkg.feepart IS NULL';

  # We MUST NOT join cust_bill_pkg to any table that it's 1:many to.
  # Otherwise we get duplication of the cust_bill_pkg records, 
  # inaccurate totals, nonsensical paging behavior, etc.
  # We CAN safely join it to a subquery that has unique billpkgnums, and 
  # that's what we'll do.

  my $tax_subquery;
  my @tax_where;

  # tax location when using tax_rate_location
  if ( $cgi->param('vendortax') ) {

    $tax_subquery = '
      SELECT billpkgnum, SUM(amount) as tax_total
      FROM cust_bill_pkg_tax_rate_location AS tax
        JOIN tax_rate_location USING (taxratelocationnum)
    ';
    foreach (qw( state county city locationtaxid)) {
      if ( scalar($cgi->param($_)) ) {
        my $place = dbh->quote( $cgi->param($_) );
        push @tax_where, "tax_rate_location.$_ = $place";
      }
    }

    # itemdesc, for breakdown from the vendor tax report
    # (this is definitely used)
    if ( $cgi->param('itemdesc') ) {
      if ( $cgi->param('itemdesc') eq 'Tax' ) {
        push @where, "($itemdesc = 'Tax' OR $itemdesc is null)";
      } else {
        push @where, "$itemdesc = ". dbh->quote($cgi->param('itemdesc'));
      }
    }

  } else { # the internal-tax case

    my $tax_select = 'SELECT tax.billpkgnum, SUM(tax.amount) as tax_total';
    my $tax_from = ' FROM cust_bill_pkg_tax_location AS tax JOIN cust_main_county USING (taxnum)';

    # package classnum
    if ( grep { $_ eq 'classnum' } $cgi->param ) {
      my @classnums = grep /^\d*$/, $cgi->param('classnum');
      $tax_from .= '
        JOIN cust_bill_pkg AS taxed_item
          ON (tax.taxable_billpkgnum = taxed_item.billpkgnum)
        LEFT JOIN cust_pkg AS taxed_pkg ON (taxed_item.pkgnum = taxed_pkg.pkgnum)
        LEFT JOIN part_pkg AS taxed_part_pkg ON (taxed_pkg.pkgpart = taxed_part_pkg.pkgpart)
        LEFT JOIN part_fee AS taxed_part_fee ON (taxed_item.feepart = taxed_part_fee.feepart)
      ';
      push @tax_where,
        "COALESCE(taxed_part_pkg.classnum, taxed_part_fee.classnum,0) IN ( ".
                       join(',', @classnums ).
                   ' )'
        if @classnums;
    }

    # taxclass
    if ( $cgi->param('taxclassNULL') ) {
      push @tax_where, 'cust_main_county.taxclass IS NULL';
    }

    # taxname
    if ( $cgi->param('taxnameNULL') ) {
      push @tax_where, 'cust_main_county.taxname IS NULL OR '.
                   'cust_main_county.taxname = \'Tax\'';
    } elsif ( $cgi->param('taxname') ) {
      push @tax_where, 'cust_main_county.taxname = '.
                    dbh->quote($cgi->param('taxname'));
    }

    # itemdesc, for breakdown from the vendor tax report
    # (is this even used? vendor tax report shouldn't use cust_bill_pkg.cgi)
    if ( $cgi->param('itemdesc') ) {
      if ( $cgi->param('itemdesc') eq 'Tax' ) {
        push @where, "($itemdesc = 'Tax' OR $itemdesc is null)";
      } else {
        push @where, "$itemdesc = ". dbh->quote($cgi->param('itemdesc'));
      }
    }

    # specific taxnums (the usual way)
    if ( $cgi->param('taxnum') =~ /^([\d,]+)$/) {
      push @tax_where, "cust_main_county.taxnum IN ($1)";
    }

    $tax_subquery = "$tax_select $tax_from";

  } # end of internal-tax case

  if (@tax_where) {
    $tax_subquery .= '
      WHERE ' . join(' AND ', map "($_)", @tax_where);
  }
  $tax_subquery .= ' GROUP BY tax.billpkgnum ';

  # now join THAT into the main report
  # (inner join, so that tax line items that don't match the tax_where 
  # conditions don't appear in the output.)

  $join_pkg .= " JOIN ($tax_subquery) AS _istax USING (billpkgnum) ";

  push @select, 'tax_total';

  @peritem = ( 'setup' ); # total tax on the invoice, not just the filtered tax
  @peritem_desc = ( 'Tax charge' );

  @total = ( 'COUNT(cust_bill_pkg.billpkgnum)',
             'SUM(cust_bill_pkg.setup)' );
  @total_desc = ( "$money_char%.2f total tax" );

  if ( @tax_where ) {
    # then also show the filtered tax
    push @peritem, 'tax_total';
    push @peritem_desc, 'Tax in category';
    push @total, 'SUM(tax_total)';
    push @total_desc, "$money_char%.2f tax in this category";
    # would also be nice to include a line explaining what the category is
  }

} # nottax / istax

#total payments
my $pay_sub = "SELECT SUM(cust_bill_pay_pkg.amount)
                 FROM cust_bill_pay_pkg
                   WHERE cust_bill_pkg.billpkgnum = cust_bill_pay_pkg.billpkgnum
              ";
push @select, "($pay_sub) AS pay_amount";

# showing credited amount, optionally with date filtering
my $credit_where = '';
if ( $cgi->param('credit_begin') or $cgi->param('credit_end') ) {
  my($cr_begin, $cr_end) = FS::UI::Web::parse_beginning_ending($cgi, 'credit');
  $credit_where = "WHERE cust_credit_bill._date >= $cr_begin " .
                  "AND cust_credit_bill._date <= $cr_end";
}

my $credit_sub = "SELECT SUM(cust_credit_bill_pkg.amount) AS credit_amount, billpkgnum
                  FROM cust_credit_bill_pkg
                  JOIN cust_credit_bill USING (creditbillnum)
                  $credit_where
                  GROUP BY billpkgnum";

$join_pkg .= " LEFT JOIN ($credit_sub) AS item_credit
  ON (cust_bill_pkg.billpkgnum = item_credit.billpkgnum)";
push @select, 'credit_amount';

# standard customer fields
push @select, 'cust_main.custnum', FS::UI::Web::cust_sql_fields();

#salesnum
if ( $cgi->param('salesnum') =~ /^(\d+)$/ ) {

  my $salesnum = $1;
  my $sales = FS::sales->by_key($salesnum)
    or die "salesnum $salesnum not found";

  my $subsearch = $sales->cust_bill_pkg_search('', '',
    'cust_main_sales' => ($cgi->param('cust_main_sales') ? 1 : 0),
    'paid'            => ($cgi->param('paid') ? 1 : 0),
    'classnum'        => scalar($cgi->param('classnum'))
  );
  $join_pkg .= " JOIN sales_pkg_class ON ( COALESCE(sales_pkg_class.classnum, 0) = COALESCE( part_fee.classnum, part_pkg.classnum, 0) )";

  my $extra_sql = $subsearch->{extra_sql};
  $extra_sql =~ s/^WHERE//;
  push @where, $extra_sql;

  $cgi->param('classnum', 0) unless $cgi->param('classnum');
}

#credit flag (include only those that have credit(s) applied)
if ( $cgi->param('credit') ) {
  push @where, 'credit_amount > 0';
}

my $where = join(' AND ', @where);
$where &&= "WHERE $where";

my $query = {
  'table'     => 'cust_bill_pkg',
  'addl_from' => "$join_pkg $join_cust",
  'hashref'   => {},
  'select'    => join(",\n", @select ),
  'extra_sql' => $where,
  'order_by'  => 'ORDER BY cust_bill._date, cust_bill_pkg.billpkgnum',
};

my $count_query =
  'SELECT ' . join(',', @total) .
  " FROM cust_bill_pkg $join_pkg $join_cust
  $where";

@peritem_desc = map {emt($_)} @peritem_desc;
my @peritem_sub = map {
  my $field = $_;
  if ($field =~ /_text$/) { # kludge for credit reason/username fields
    sub {$_[0]->get($field)};
  } else {
    sub { sprintf($money_char.'%.2f', $_[0]->get($field)) }
  }
} @peritem;
my @peritem_null = map { '' } @peritem; # placeholders
my $peritem_align = 'r' x scalar(@peritem);

@currency_desc = map {emt($_)} @currency_desc;
my @currency_null = map { '' } @currency; # placeholders
my $currency_align = 'r' x scalar(@currency);

my $ilink = [ "${p}view/cust_bill.cgi?", 'invnum' ];
my $clink = [ "${p}view/cust_main.cgi?", 'custnum' ];

my $pay_link    = ''; #[, 'billpkgnum', ];
my $credit_param = '';
foreach ('credit_begin', 'credit_end') {
  if ( $cgi->param($_) ) {
    $credit_param .= "$_=" . $cgi->param($_) . ';';
  }
}
my $credit_link = [ "${p}search/cust_credit_bill_pkg.html?${credit_param}billpkgnum=", 'billpkgnum', ];

warn "\n\nQUERY:\n".Dumper($query)."\n\nCOUNT_QUERY:\n$count_query\n\n"
  if $cgi->param('debug');

</%init>