1 package SL::DB::Helper::PriceTaxCalculator;
5 use parent qw(Exporter);
6 our @EXPORT = qw(calculate_prices_and_taxes);
9 use List::Util qw(sum min);
11 sub calculate_prices_and_taxes {
12 my ($self, %params) = @_;
14 require SL::DB::PriceFactor;
17 my %units_by_name = map { ( $_->name => $_ ) } @{ SL::DB::Manager::Unit->get_all };
18 my %price_factors_by_id = map { ( $_->id => $_ ) } @{ SL::DB::Manager::PriceFactor->get_all };
20 my %data = ( lastcost_total => 0,
22 last_incex_chart_id => undef,
23 units_by_name => \%units_by_name,
24 price_factors_by_id => \%price_factors_by_id,
29 assembly_items => [ ],
30 exchangerate => undef,
31 is_sales => $self->can('customer') && $self->customer,
32 is_invoice => (ref($self) =~ /Invoice/) || $params{invoice},
35 _get_exchangerate($self, \%data, %params);
38 $self->marge_total(0);
41 foreach my $item ($self->items) {
43 _calculate_item($self, $item, $idx, \%data, %params);
46 _calculate_amounts($self, \%data, %params);
48 return $self unless wantarray;
50 return map { ($_ => $data{$_}) } qw(taxes amounts amounts_cogs allocated exchangerate assembly_items);
53 sub _get_exchangerate {
54 my ($self, $data, %params) = @_;
55 require SL::DB::Default;
57 my $currency = $self->currency_id ? $self->currency->name || '' : '';
58 if ($currency ne SL::DB::Default->get_default_currency) {
59 $data->{exchangerate} = $::form->check_exchangerate(\%::myconfig, $currency, $self->transdate, $data->{is_sales} ? 'buy' : 'sell');
60 $data->{exchangerate} ||= $params{exchangerate};
62 $data->{exchangerate} ||= 1;
66 my ($self, $item, $idx, $data, %params) = @_;
68 my $part_unit = $data->{units_by_name}->{ $item->part->unit };
69 my $item_unit = $data->{units_by_name}->{ $item->unit };
71 croak("Undefined unit " . $item->part->unit) if !$part_unit;
72 croak("Undefined unit " . $item->unit) if !$item_unit;
74 $item->base_qty($item_unit->convert_to($item->qty, $part_unit));
75 $item->fxsellprice($item->sellprice) if $data->{is_invoice};
77 my $num_dec = _num_decimal_places($item->sellprice);
78 my $discount = _round($item->sellprice * ($item->discount || 0), $num_dec);
79 my $sellprice = _round($item->sellprice - $discount, $num_dec);
81 $item->price_factor( ! $item->price_factor_obj ? 1 : ($item->price_factor_obj->factor || 1));
82 $item->marge_price_factor(! $item->part->price_factor ? 1 : ($item->part->price_factor->factor || 1));
83 my $linetotal = _round($sellprice * $item->qty / $item->price_factor, 2) * $data->{exchangerate};
84 $linetotal = _round($linetotal, 2);
86 $data->{invoicediff} += $sellprice * $item->qty * $data->{exchangerate} / $item->price_factor - $linetotal if $self->taxincluded;
89 $item->marge_total( 0);
90 $item->marge_percent(0);
93 my $lastcost = ! ($item->lastcost * 1) ? ($item->part->lastcost || 0) : $item->lastcost;
95 $item->marge_total( $linetotal - $lastcost / $item->marge_price_factor);
96 $item->marge_percent($item->marge_total * 100 / $linetotal);
98 $self->marge_total( $self->marge_total + $item->marge_total);
99 $data->{lastcost_total} += $lastcost;
102 my $taxkey = $item->part->get_taxkey(date => $self->transdate, is_sales => $data->{is_sales}, taxzone => $self->taxzone_id);
103 my $tax_rate = $taxkey->tax->rate;
104 my $tax_amount = undef;
106 if ($self->taxincluded) {
107 $tax_amount = $linetotal * $tax_rate / ($tax_rate + 1);
108 $sellprice = $sellprice / ($tax_rate + 1);
111 $tax_amount = $linetotal * $tax_rate;
114 if ($taxkey->tax->chart_id) {
115 $data->{taxes}->{ $taxkey->tax->chart_id } ||= 0;
116 $data->{taxes}->{ $taxkey->tax->chart_id } += $tax_amount;
117 } elsif ($tax_amount) {
118 die "tax_amount != 0 but no chart_id for taxkey " . $taxkey->id . " tax " . $taxkey->tax->id;
121 $self->netamount($self->netamount + $sellprice * $item->qty / $item->price_factor);
123 my $chart = $item->part->get_chart(type => $data->{is_sales} ? 'income' : 'expense', taxzone => $self->taxzone_id);
124 $data->{amounts}->{ $chart->id } ||= { taxkey => $taxkey->taxkey_id, tax_id => $taxkey->tax_id, amount => 0 };
125 $data->{amounts}->{ $chart->id }->{amount} += $linetotal;
127 push @{ $data->{assembly_items} }, [];
128 if ($item->part->is_assembly) {
129 _calculate_assembly_item($self, $data, $item->part, $item->base_qty, $item->unit_obj->convert_to(1, $item->part->unit_obj));
130 } elsif ($item->part->is_part) {
131 if ($data->{is_invoice}) {
132 $item->allocated(_calculate_part_item($self, $data, $item->part, $item->base_qty, $item->unit_obj->convert_to(1, $item->part->unit_obj)));
136 $data->{last_incex_chart_id} = $chart->id if $data->{is_sales};
138 _dbg("CALCULATE! ${idx} i.qty " . $item->qty . " i.sellprice " . $item->sellprice . " sellprice $sellprice num_dec $num_dec taxamount $tax_amount " .
139 "i.linetotal $linetotal netamount " . $self->netamount . " marge_total " . $item->marge_total . " marge_percent " . $item->marge_percent);
142 sub _calculate_amounts {
143 my ($self, $data, %params) = @_;
146 foreach my $chart_id (keys %{ $data->{taxes} }) {
147 my $rounded = _round($data->{taxes}->{$chart_id} * $data->{exchangerate}, 2);
148 $tax_diff += $data->{taxes}->{$chart_id} * $data->{exchangerate} - $rounded if $self->taxincluded;
149 $data->{taxes}->{$chart_id} = $rounded;
152 my $amount = _round(($self->netamount + $tax_diff) * $data->{exchangerate}, 2);
153 my $diff = $amount - ($self->netamount + $tax_diff) * $data->{exchangerate};
154 my $netamount = $amount;
156 if ($self->taxincluded) {
157 $data->{invoicediff} += $diff;
158 $data->{amounts}->{ $data->{last_incex_chart_id} }->{amount} += $data->{invoicediff} if $data->{last_incex_chart_id};
161 _dbg("Sna " . $self->netamount . " idiff " . $data->{invoicediff} . " tdiff ${tax_diff}");
163 my $tax = sum values %{ $data->{taxes} };
164 $data->{arap_amount} = $netamount + $tax;
166 $self->netamount( $netamount);
167 $self->amount( $netamount + $tax);
168 $self->marge_percent($self->netamount ? ($self->netamount - $data->{lastcost_total}) * 100 / $self->netamount : 0);
171 sub _calculate_assembly_item {
172 my ($self, $data, $part, $total_qty, $base_factor) = @_;
174 return 0 if $::instance_conf->get_inventory_system eq 'periodic' || !$data->{is_invoice};
176 foreach my $assembly_entry (@{ $part->assemblies }) {
177 push @{ $data->{assembly_items}->[-1] }, { part => $assembly_entry->part,
178 qty => $total_qty * $assembly_entry->qty,
181 if ($assembly_entry->part->is_assembly) {
182 _calculate_assembly_item($self, $data, $assembly_entry->part, $total_qty * $assembly_entry->qty);
183 } elsif ($assembly_entry->part->is_part) {
184 my $allocated = _calculate_part_item($self, $data, $assembly_entry->part, $total_qty * $assembly_entry->qty);
185 $data->{assembly_items}->[-1]->[-1]->{allocated} = $allocated;
190 sub _calculate_part_item {
191 my ($self, $data, $part, $total_qty, $base_factor) = @_;
193 _dbg("cpsi tq " . $total_qty);
195 return 0 if $::instance_conf->get_inventory_system eq 'periodic' || !$data->{is_invoice} || !$total_qty;
199 my $remaining_qty = $total_qty;
200 my $expense_income_chart = $part->get_chart(type => $data->{is_sales} ? 'expense' : 'income', taxzone => $self->taxzone_id);
201 my $inventory_chart = $part->get_chart(type => 'inventory', taxzone => $self->taxzone_id);
203 my $iterator = SL::DB::Manager::InvoiceItem->get_all_iterator(query => [ and => [ parts_id => $part->id,
204 \'(base_qty + allocated) < 0' ] ]);
206 while (($remaining_qty > 0) && ($entry = $iterator->next)) {
207 my $qty = min($remaining_qty, $entry->base_qty * -1 - $entry->allocated - $data->{allocated}->{ $entry->id });
212 my $linetotal = _round(($entry->sellprice * $qty) / $base_factor, 2);
214 $data->{amounts_cogs}->{ $expense_income_chart->id } -= $linetotal;
215 $data->{amounts_cogs}->{ $inventory_chart->id } += $linetotal;
217 $data->{allocated}->{ $entry->id } ||= 0;
218 $data->{allocated}->{ $entry->id } += $qty;
219 $remaining_qty -= $qty;
224 return $remaining_qty - $total_qty;
228 return $::form->round_amount(@_);
231 sub _num_decimal_places {
232 return length( (split(/\./, '' . ($_[0] * 1), 2))[1] || '' );
236 # $::lxdebug->message(0, join(' ', @_));
248 SL::DB::Helper::PriceTaxCalculator - Mixin for calculating the prices,
249 amounts and taxes of orders, quotations, invoices
255 =item C<calculate_prices_and_taxes %params>
257 Calculates the prices, amounts and taxes for an order, a quotation or
260 The function assumes that the mixing package has a certain layout and
261 provides certain functions:
269 =item C<customer> or C<vendor>
271 Determines if the record is a sales or purchase record.
275 Accessor returning all line items for this record. The line items
276 themselves must again have a certain layout. Instances of
277 L<SL::DB::OrderItem> and L<SL::DB::InvoiceItem> are supported.
281 The following values are calculated and set for C<$self>: C<amount>,
282 C<netamount>, C<marge_percent>, C<marge_total>.
284 The following values are calculated and set for each line item:
285 C<base_qty>, C<price_factor>, C<marge_price_factor>, C<marge_total>,
288 The objects are not saved.
290 Returns C<$self> in scalar context.
292 In array context a hash with the following keys is returned:
298 A hash reference with the calculated taxes. The keys are chart IDs,
299 the values the calculated taxes.
303 A hash reference with the calculated amounts. The keys are chart IDs,
304 the values are hash references containing the two keys C<amount> and
307 =item C<amounts_cogs>
309 A hash reference with the calculated amounts for costs of goods
310 sold. The keys are chart IDs, the values the calculated amounts.
312 =item C<assembly_items>
314 An array reference with as many entries as there are items in the
315 record. Each entry is again an array reference of hash references with
316 the keys C<part> (an instance of L<SL::DB::Part>), C<qty> and
317 C<allocated>. Is only valid for invoices and can be used to populate
318 the C<invoice> table with entries for assemblies.
322 A hash reference. The keys are IDs of entries in the C<invoice>
323 table. The values are the new values for the entry's C<allocated>
324 column. Only valid for invoices.
326 =item C<exchangerate>
328 The exchangerate used for the calculation.
340 Moritz Bunkus E<lt>m.bunkus@linet-services.deE<gt>