55 lines
1.4 KiB
Perl
55 lines
1.4 KiB
Perl
#!perl
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HELP "pfand" => "Pfand zurueck";
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# This is a demo plugin. It's called "pfand" because "deposit" would be
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# confusing and only the Germans are crazy enough to have deposits on small
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# bottles anyway ;)
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# The file format for 'revbank.pfand' is simply two whitespace separated
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# columns: product id and pfand amount.
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sub _read_pfand() {
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open my $fh, 'revbank.pfand' or die $!;
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return {
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map { split " " } grep /\S/, grep !/^\s*#/, readline $fh
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};
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}
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sub command :Tab(pfand) ($self, $cart, $command, @) {
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return NEXT if $command ne 'pfand';
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return "Pfand zurueck fuer", \&product;
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}
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sub product :Tab(&tab) ($self, $cart, $product, @) {
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my $pfand = parse_amount(_read_pfand->{ $product })
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or return REJECT, "Invalid pfand amount for $product";
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if ($pfand) {
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$cart
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->add(+$pfand, "Pfand zurueck", { is_return => 1 })
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->add_contra("-pfand", -$pfand, "Pfand fuer \$you");
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} else {
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say "$product: Kein Pfand";
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}
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return ACCEPT;
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}
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sub tab {
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return keys %{ _read_pfand() };
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}
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sub hook_add_entry ($class, $cart, $entry, @) {
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return if $entry->has_attribute('is_return');
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return if not $entry->has_attribute('product_id');
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my $pfand = _read_pfand->{ $entry->attribute('product_id') } or return;
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$cart
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->add(-$pfand, "Pfand", { is_pfand => 1 })
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->add_contra("-pfand", +$pfand, "Pfand von \$you");
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return;
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}
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