100 lines
2.2 KiB
Perl
100 lines
2.2 KiB
Perl
package BurguillosInfo::Ads;
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use v5.36.0;
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use strict;
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use warnings;
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use feature 'signatures';
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use List::AllUtils qw/none/;
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use Moo;
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use Module::Pluggable
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search_path => ['BurguillosInfo::Ads'],
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instantiate => 'instance',
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on_require_error => sub ( $plugin, $error ) {
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die $error;
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};
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{
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my @array_ads;
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sub _array ($self) {
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if ( !scalar @array_ads ) {
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$self->_populate_array;
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}
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return [@array_ads];
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}
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sub _populate_array ($self) {
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@array_ads = $self->plugins();
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for my $ad (@array_ads) {
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$self->_check_ad_valid($ad);
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}
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}
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}
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sub get_next ( $self, $current_ad_number = undef ) {
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my $array = $self->_array;
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use Data::Dumper;
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if ( !scalar @$array
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|| none { $_->is_active } @$array )
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{
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return { continue => 0, current_ad_number => undef };
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}
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if ( !defined $current_ad_number ) {
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$current_ad_number = 0;
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}
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my $ad = $self->get_rand_ad($array)->clone;
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return {
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ad => $ad->serialize,
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continue => 1,
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current_ad_number => $self->_get_next_number($current_ad_number),
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};
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}
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sub get_rand_ad($self, $array) {
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my $valid_ads = [ grep { $_->is_active } @$array ];
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my $max_weight = $self->sum_weights($array);
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my $rand = int(rand() * $max_weight);
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my $sum_weight = 0;
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for my $ad (@$valid_ads) {
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$sum_weight += $ad->weight;
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if ($rand < $sum_weight) {
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return $ad;
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}
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}
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die "This should not happen, there should be always a corresponding ad.";
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}
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sub sum_weights($self, $array) {
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my $sum = 0;
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for my $ad (@$array) {
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$sum += $ad->weight;
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}
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return $sum;
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}
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sub _get_next_number ( $self, $current_ad_number = undef ) {
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my $array = $self->_array;
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if ( !scalar @$array ) {
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return undef;
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}
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if ( !defined $current_ad_number ) {
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return 0;
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}
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if ( ++$current_ad_number > ( scalar @$array ) - 1 ) {
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return 0;
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}
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return $current_ad_number;
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}
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sub _check_ad_valid ( $self, $ad ) {
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if ( !$ad->does('BurguillosInfo::Ad') ) {
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die "$ad does not implement BurguillosInfo::Ad.";
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}
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}
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1;
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