revbank/plugins/statiegeld
Juerd Waalboer e17c092efe Allow statiegeld return via deposit command
May come in handy if there the bottle return revbank machine is dead.
2023-01-16 04:38:10 +01:00

135 lines
3.8 KiB
Perl

#!perl
use List::Util;
# This plugin is intended for use on a separate terminal.
# Run revbank with REVBANK_STATIEGELD=1 on the bottle deposit terminal.
#
# In revbank.products, add the bottle/can deposit to products:
#
# clubmate 1.40 Club-Mate bottle +sb
# cola 0.90 Cola can +sc
# +sb 0.15@+statiegeld Bottle deposit
# +sc 0.25@+statiegeld Can deposit
#
# This plugin is called "statiegeld" to prevent confusion with the existing
# plugin "deposit":
# geld storten = deposit
# statiegeld = deposit
# (Note that the Dutch term "statiegeld" should only be displayed if you
# choose to use it in the product descriptions.)
our @addon_accounts = ("+statiegeld");
my $nope = "Sorry, no deposit on that product.\n";
our $S = ($ENV{REVBANK_STATIEGELD} // 0) == 1;
sub statiegeld_product($product_id) {
my $products = RevBank::Plugin::products::_read_products();
my $product = $products->{$product_id} or return;
my @addons = @{ $product->{addons} };
my @relevant_addons;
while (my $product_id = shift @addons) {
my $addon = $products->{"+$product_id"} // $products->{$product_id};
push @relevant_addons, $addon
if !$addon->{percent}
and (List::Util::any { $addon->{contra} eq $_ } @addon_accounts)
and $addon->{price} > 0;
push @addons, @{ $addon->{addons} };
};
return 0 if not @relevant_addons;
return { product => $product, statiegeld_addons => \@relevant_addons };
}
sub hook_deposit_command($class, $prompt, $array, @) {
$$prompt =~ s/$/, or scan empty container/;
push @$array, sub($, $cart, $input, @) {
my $p = statiegeld_product($input) // return NEXT;
if (not $p) {
print $nope;
return NEXT;
}
local $S = 1;
return command($class, $cart, $input);
};
}
sub command ($invocant, $cart, $command, @) {
$S or return NEXT;
defined &RevBank::Plugin::products::_read_products
or die "statiegeld plugin requires products plugin";
my $sg = statiegeld_product($command) // return NEXT;
if (not $sg) {
print $nope;
return ACCEPT;
}
my $product = $sg->{product};
my $addons = $sg->{statiegeld_addons};
for my $addon (@$addons) {
my $d = "$addon->{description} ($product->{description})";
$cart
->add(+$addon->{price}, $d, { plugin => $invocant->id, addon_id => $addon->{id} })
->add_contra($addon->{contra}, -$addon->{price}, "$d for \$you");
}
return ACCEPT;
}
sub hook_added_entry ($class, $cart, $entry, @) {
$S or return;
$entry->has_attribute('plugin') or return;
if ($entry->attribute('plugin') eq 'market') {
print $nope;
$cart->delete($entry);
}
if ($entry->attribute('plugin') eq 'products') {
my $id = $class->id;
die "Configuration error: the '$id' plugin must be *before* the 'products' plugin in revbank.plugins.\n";
}
}
sub hook_prompt($class, $cart, $prompt, @) {
$S or return;
# Assumption: only the main prompt will have fewer than 3 \w characters
print "++ Scan product for deposit return ++\n" if $prompt !~ /\w{3,}/;
}
sub hook_input($class, $cart, $input, $split_input, @) {
$S or return;
# Hijack 'help' command so it never reaches the 'help' plugin.
if ($split_input and $input eq "help") {
print <<"END";
This is a beverage container (e.g. bottle) deposit return terminal to get your
money back; please use the other RevBank terminal for buying things and to read
the regular RevBank help text. (Normal RevBank commands are available.)
\e[1mJust scan the products and type your account name.\e[0m; deposits are only refunded
for container deposits on products that we have sold to you.
END
no warnings qw(exiting);
# "Exiting subroutine via %s"
# "(W exiting) You are exiting a subroutine by unconventional means,
# such as a goto, or a loop control statement."
redo OUTER; # this is phenominally vile :)
}
}