+ my $charts = $::request->cache('get_chart_id/by_part_id_and_taxzone')->{$self->id} //= {};
+ my $all_charts = $::request->cache('get_chart_id/by_id');
+
+ $charts->{$taxzone} ||= { };
+
+ if (!exists $charts->{$taxzone}->{$type}) {
+ require SL::DB::Buchungsgruppe;
+ my $bugru = SL::DB::Buchungsgruppe->load_cached($self->buchungsgruppen_id);
+ my $chart_id = ($type eq 'inventory') ? ($self->is_part ? $bugru->inventory_accno_id : undef)
+ : $bugru->call_sub("${type}_accno_id", $taxzone);
+
+ if ($chart_id) {
+ my $chart = $all_charts->{$chart_id} // SL::DB::Chart->load_cached($chart_id)->load;
+ $all_charts->{$chart_id} = $chart;
+ $charts->{$taxzone}->{$type} = $chart;
+ }
+ }
+
+ return $charts->{$taxzone}->{$type};
+}
+
+sub get_stock {
+ my ($self, %params) = @_;
+
+ return undef unless $self->id;
+
+ my $query = 'SELECT SUM(qty) FROM inventory WHERE parts_id = ?';
+ my @values = ($self->id);
+
+ if ( $params{bin_id} ) {
+ $query .= ' AND bin_id = ?';
+ push(@values, $params{bin_id});
+ }
+
+ if ( $params{warehouse_id} ) {
+ $query .= ' AND warehouse_id = ?';
+ push(@values, $params{warehouse_id});
+ }
+
+ if ( $params{shippingdate} ) {
+ die unless ref($params{shippingdate}) eq 'DateTime';
+ $query .= ' AND shippingdate <= ?';
+ push(@values, $params{shippingdate});
+ }
+
+ my ($stock) = selectrow_query($::form, $self->db->dbh, $query, @values);
+
+ return $stock || 0; # never return undef
+};
+
+
+# this is designed to ignore chargenumbers, expiration dates and just give a list of how much <-> where
+sub get_simple_stock {
+ my ($self, %params) = @_;
+
+ return [] unless $self->id;
+
+ my $query = <<'';
+ SELECT sum(qty), warehouse_id, bin_id FROM inventory WHERE parts_id = ?
+ GROUP BY warehouse_id, bin_id
+
+ my $stock_info = selectall_hashref_query($::form, $::form->get_standard_dbh, $query, $self->id);
+ [ map { bless $_, 'SL::DB::Part::SimpleStock'} @$stock_info ];
+}
+# helper class to have bin/warehouse accessors in stock result
+{ package SL::DB::Part::SimpleStock;
+ sub warehouse { require SL::DB::Warehouse; SL::DB::Manager::Warehouse->find_by_or_create(id => $_[0]->{warehouse_id}) }
+ sub bin { require SL::DB::Bin; SL::DB::Manager::Bin ->find_by_or_create(id => $_[0]->{bin_id}) }
+}
+
+sub get_simple_stock_sql {
+ my ($self, %params) = @_;
+
+ return [] unless $self->id;
+
+ my $query = <<SQL;
+ SELECT w.description AS warehouse_description,
+ b.description AS bin_description,
+ SUM(i.qty) AS qty,
+ SUM(i.qty * p.lastcost) AS stock_value,
+ p.unit AS unit,
+ LEAD(w.description) OVER pt AS wh_lead, -- to detect warehouse changes for subtotals in template
+ SUM( SUM(i.qty) ) OVER pt AS run_qty, -- running total of total qty
+ SUM( SUM(i.qty) ) OVER wh AS wh_run_qty, -- running total of warehouse qty
+ SUM( SUM(i.qty * p.lastcost)) OVER pt AS run_stock_value, -- running total of total stock_value
+ SUM( SUM(i.qty * p.lastcost)) OVER wh AS wh_run_stock_value -- running total of warehouse stock_value
+ FROM inventory i
+ LEFT JOIN parts p ON (p.id = i.parts_id)
+ LEFT JOIN warehouse w ON (i.warehouse_id = w.id)
+ LEFT JOIN bin b ON (i.bin_id = b.id)
+ WHERE parts_id = ?
+ GROUP BY w.description, w.sortkey, b.description, p.unit, i.parts_id
+ HAVING SUM(qty) != 0
+ WINDOW pt AS (PARTITION BY i.parts_id ORDER BY w.sortkey, b.description, p.unit),
+ wh AS (PARTITION by w.description ORDER BY w.sortkey, b.description, p.unit)
+ ORDER BY w.sortkey, b.description, p.unit
+SQL
+
+ my $stock_info = selectall_hashref_query($::form, $self->db->dbh, $query, $self->id);
+ return $stock_info;
+}
+
+sub get_mini_journal {
+ my ($self) = @_;
+
+ # inventory ids of the most recent 10 inventory trans_ids
+
+ # duplicate code copied from SL::Controller::Inventory mini_journal, except
+ # for the added filter on parts_id
+
+ my $parts_id = $self->id;
+ my $query = <<"SQL";
+with last_inventories as (
+ select id,
+ trans_id,
+ itime
+ from inventory
+ where parts_id = $parts_id
+ order by itime desc
+ limit 20
+),
+grouped_ids as (
+ select trans_id,
+ array_agg(id) as ids
+ from last_inventories
+ group by trans_id
+ order by max(itime)
+ desc limit 10
+)
+select unnest(ids)
+ from grouped_ids
+ limit 20 -- so the planner knows how many ids to expect, the cte is an optimisation fence
+SQL
+
+ my $objs = SL::DB::Manager::Inventory->get_all(
+ query => [ id => [ \"$query" ] ], # make emacs happy "
+ with_objects => [ 'parts', 'trans_type', 'bin', 'bin.warehouse' ], # prevent lazy loading in template
+ sort_by => 'itime DESC',
+ );
+ # remember order of trans_ids from query, for ordering hash later
+ my @sorted_trans_ids = uniq map { $_->trans_id } @$objs;
+
+ # at most 2 of them belong to a transaction and the qty determines in or out.
+ my %transactions;
+ for (@$objs) {
+ $transactions{ $_->trans_id }{ $_->qty > 0 ? 'in' : 'out' } = $_;
+ $transactions{ $_->trans_id }{base} = $_;