projekt kivitendo

our @EXPORT_OK = qw(skonto_date skonto_charts amount_less_skonto within_skonto_period percent_skonto reference_account reference_amount open_amount open_percent remaining_skonto_days skonto_amount check_skonto_configuration valid_skonto_amount get_payment_suggestions validate_payment_type open_sepa_transfer_amount get_payment_select_options_for_bank_transaction exchangerate forex _skonto_charts_and_tax_correction);

sub skonto_charts {

  my $self = shift;

  # TODO: use param for amount, may also want to calculate skonto_amounts by

  # passing percentage in the future

  my $amount = shift || $self->skonto_amount;

  croak "no amount passed to skonto_charts" unless abs(_round($amount)) >= 0.01;

  # TODO: check whether there are negative values in invoice / acc_trans ... credited items

  # don't check whether skonto applies, because user may want to override this

  # return undef unless $self->percent_skonto;

  my $is_sales = ref($self) eq 'SL::DB::Invoice';

  my $mult = $is_sales ? 1 : -1;  # multiplier for getting the right sign

  my @skonto_charts;  # resulting array with all income/expense accounts that have to be corrected

  # calculate effective skonto (percentage) in difference_as_skonto mode

  # only works if there are no negative acc_trans values

  my $effective_skonto_rate = $amount ? $amount / $self->amount : 0;

  # checks:

  my $total_skonto_amount  = 0;

  my $total_rounding_error = 0;

  my $reference_ARAP_amount = 0;

  # my $transactions = $self->transactions;

  foreach my $transaction (@{ $self->transactions }) {

    # find all transactions with an AR_amount or AP_amount link

    $transaction->{chartlinks} = { map { $_ => 1 } split(m/:/, $transaction->{chart_link}) };

    # second condition is that we can determine an automatic Skonto account for each AR_amount entry

    if ( ( $is_sales && $transaction->{chartlinks}->{AR_amount} ) or ( !$is_sales && $transaction->{chartlinks}->{AP_amount}) ) {

        # $reference_ARAP_amount += $transaction->{amount} * $mult;

        # quick hack that works around problem of non-unique tax keys in SKR04

        # ? use tax_id in acc_trans

        my $tax = SL::DB::Manager::Tax->get_first( where => [id => $transaction->{tax_id}]);

        croak "no tax for taxkey " . $transaction->{taxkey} unless ref $tax;

        if ( $is_sales ) {

          die t8('no skonto_chart configured for taxkey #1 : #2 : #3', $transaction->{taxkey} , $tax->taxdescription , $tax->rate*100) unless ref $tax->skonto_sales_chart;

        } else {

          die t8('no skonto_chart configured for taxkey #1 : #2 : #3', $transaction->{taxkey} , $tax->taxdescription , $tax->rate*100) unless ref $tax->skonto_purchase_chart;

        };

        my $skonto_amount_unrounded;

        my $skonto_percent_abs = $self->amount ? abs($transaction->amount * (1 + $tax->rate) * 100 / $self->amount) : 0;

        my $transaction_amount = abs($transaction->{amount} * (1 + $tax->rate));

        my $transaction_skonto_percent = abs($transaction_amount/$self->amount); # abs($transaction->{amount} * (1 + $tax->rate));

        $skonto_amount_unrounded   = abs($amount * $transaction_skonto_percent);

        my $skonto_amount_rounded  = _round($skonto_amount_unrounded);

        my $rounding_error         = $skonto_amount_unrounded - $skonto_amount_rounded;

        my $rounded_rounding_error = _round($rounding_error);

        $total_rounding_error += $rounding_error;

        $total_skonto_amount  += $skonto_amount_rounded;

        my $rec = {

          # skonto_percent_abs: relative part of amount + tax to the total invoice amount

          'skonto_percent_abs'     => $skonto_percent_abs,

          'chart_id'               => $is_sales ? $tax->skonto_sales_chart->id : $tax->skonto_purchase_chart->id,

          'skonto_amount'          => $skonto_amount_rounded,

          # 'rounding_error'         => $rounding_error,

          # 'rounded_rounding_error' => $rounded_rounding_error,

        };

        push @skonto_charts, $rec;

      }

  }

  # if the rounded sum of all rounding_errors reaches 0.01 this sum is

  # subtracted from the largest skonto_amount

  my $rounded_total_rounding_error = abs(_round($total_rounding_error));

  if ( $rounded_total_rounding_error > 0 ) {

    my $highest_amount_pos = 0;

    my $highest_amount = 0;

    my $i = -1;

    foreach my $ref ( @skonto_charts ) {

      $i++;

      if ( $ref->{skonto_amount} > $highest_amount ) {

        $highest_amount     = $ref->{skonto_amount};

        $highest_amount_pos = $i;

      };

    };

    $skonto_charts[$i]->{skonto_amount} -= $rounded_total_rounding_error;

  };

  return @skonto_charts;

};