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<?php

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use AdvancedAds\Entities;

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use AdvancedAds\Utilities\WordPress;

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/**

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* An ad group object

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* @package Advanced_Ads_Group

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* @author Thomas Maier <support@wpadvancedads.com>

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* @license GPL-2.0+

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* @link https://wpadvancedads.com

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class Advanced_Ads_Group {

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/**

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* Default ad group weight

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* previously called MAX_AD_GROUP_WEIGHT

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const MAX_AD_GROUP_DEFAULT_WEIGHT = 10;

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/**

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* Term id of this ad group

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public $id = 0;

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/**

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* Group type

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* @since 1.4.8

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public $type = 'default';

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/**

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* Name of the taxonomy

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public $taxonomy = '';

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/**

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* Post type of the ads

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protected $post_type = '';

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/**

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* The current loaded ad

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protected $current_ad = '';

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/**

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* The name of the term

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public $name = '';

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/**

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* The slug of the term

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public $slug = '';

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/**

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* The description of the term

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public $description = '';

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/**

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* Number of ads to display in the group block

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public $ad_count = 1;

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/**$slug

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* contains other options

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* @since 1.5.5

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public $options = [];

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/**

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* Optional arguments passed to ads.

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* @var array

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public $ad_args = [];

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/**

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* Containing ad weights

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private $ad_weights;

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/**

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* Array with post type objects (ads)

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private $ads = false;

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/**

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* Multidimensional array contains information about the wrapper

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* each possible html attribute is an array with possible multiple elements.

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* @since untagged

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public $wrapper = [];

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/**

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* Displayed above the ad.

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public $label = '';

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/**

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* Whether this group is in a head placement.

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* @var bool

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private $is_head_placement;

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/**

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* True, if this is an Advanced Ads Ad Group

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* @var bool

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public $is_group = false;

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/**

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* The decorated WP_Term object.

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* @var \WP_Term

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private $group;

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/**

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* Init ad group object

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* @param int|WP_Term $group Either id of the ad group or term object.

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* @param iterable $ad_args Optional arguments passed to ads.

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* @since 1.0.0

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public function __construct( $group, iterable $ad_args = [] ) {

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$this->taxonomy = Entities::TAXONOMY_AD_GROUP;

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$this->group = get_term( $group, $this->taxonomy );

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if ( $this->group === null || is_wp_error( $this->group ) ) {

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return;

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}

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$this->is_group = true;

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$this->id = $this->group->term_id;

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$this->name = $this->group->name;

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$this->slug = $this->group->slug;

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$this->description = $this->group->description;

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$this->post_type = Entities::POST_TYPE_AD;

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$this->ad_args = $ad_args;

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$this->is_head_placement = isset( $this->ad_args['placement_type'] ) && $this->ad_args['placement_type'] === 'header';

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$this->ad_args['is_top_level'] = ! isset( $this->ad_args['is_top_level'] );

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$this->load_additional_attributes();

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if ( ! $this->is_head_placement ) {

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$this->create_wrapper();

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}

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}

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/**

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* If a property on the original WP_Term is requested, return it, otherwise null.

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* @param string $name The requested property name.

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* @return mixed|null

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* @noinspection MagicMethodsValidityInspection -- We don't want to allow setting of properties.

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public function __get( string $name ) {

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return $this->group->$name ?? null;

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}

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/**

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* Whether a property is set.

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* @param string $name The requested property name.

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* @return bool

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* @noinspection MagicMethodsValidityInspection -- We don't want to allow setting of properties.

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public function __isset( string $name ): bool {

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return isset( $this->group->$name );

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}

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/**

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* Load additional attributes for groups that are not part of the WP terms

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* @since 1.4.8

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protected function load_additional_attributes() {

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// -TODO should abstract (i.e. only call once per request)

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$all_groups = get_option( 'advads-ad-groups', [] );

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if ( ! isset( $all_groups[ $this->id ] ) || ! is_array( $all_groups[ $this->id ] ) ) { return; }

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if ( isset( $this->ad_args['change-group'] ) ) {

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// some options was provided by the user

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$group_data = Advanced_Ads_Utils::merge_deep_array( [ $all_groups[ $this->id ], $this->ad_args['change-group'] ] ) ;

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} else {

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$group_data = $all_groups[ $this->id ];

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}

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if ( isset( $group_data['type'] ) ) {

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$this->type = $group_data['type'];

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}

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// get ad count; default is 1

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if ( isset( $group_data['ad_count'] ) ) {

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$this->ad_count = $group_data['ad_count'] === 'all' ? 'all' : (int) $group_data['ad_count'];

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}

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if ( isset( $group_data['options'] ) ) {

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$this->options = isset( $group_data['options'] ) ? $group_data['options'] : [];

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}

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}

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/**

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* Control the output of the group by type and amount of ads

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* @param array $ordered_ad_ids Ordered ids of the ads that belong to the group.

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* @return string $output output of ad(s) by ad

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* @since 1.4.8

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public function output( $ordered_ad_ids ) {

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if ( empty( $ordered_ad_ids ) ) {

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return '';

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}

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// load the ad output

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$output = [];

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$ads_displayed = 0;

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$ad_count = apply_filters( 'advanced-ads-group-ad-count', $this->ad_count, $this );

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$ad_select = Advanced_Ads_Select::get_instance();

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// the Advanced_Ads_Ad obj can access this info

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$this->ad_args['group_info'] = [

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'id' => $this->id,

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'name' => $this->name,

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'type' => $this->type,

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'refresh_enabled' => ! empty( $this->options['refresh']['enabled'] ),

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];

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$this->ad_args['ad_label'] = 'disabled';

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if( is_array( $ordered_ad_ids ) ){

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foreach ( $ordered_ad_ids as $_ad_id ) {

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$this->ad_args['group_info']['ads_displayed'] = $ads_displayed;

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// load the ad output

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$ad = $ad_select->get_ad_by_method( $_ad_id, Advanced_Ads_Select::AD, $this->ad_args );

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if ( ! empty( $ad ) ) {

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$output[] = $ad;

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$ads_displayed++;

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// break the loop when maximum ads are reached

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if( $ads_displayed === $ad_count ) {

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break;

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}

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}

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}

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}

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$global_output = ! isset( $this->ad_args['global_output'] ) || $this->ad_args['global_output'];

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if ( $global_output ) {

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// add the group to the global output array

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$advads = Advanced_Ads::get_instance();

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$advads->current_ads[] = ['type' => 'group', 'id' => $this->id, 'title' => $this->name];

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}

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if ( $output === [] || ! is_array( $output ) ) {

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return '';

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}

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// filter grouped ads output

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$output_array = apply_filters( 'advanced-ads-group-output-array', $output, $this );

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// make sure the right format comes through the filter

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if ( $output_array === [] || ! is_array( $output_array ) ) {

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return '';

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}

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$output_string = implode( '', $output_array );

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// Adds inline css to the wrapper.

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if ( ! empty( $this->ad_args['inline-css'] ) && $this->ad_args['is_top_level'] ) {

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$inline_css = new Advanced_Ads_Inline_Css();

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$this->wrapper = $inline_css->add_css( $this->wrapper, $this->ad_args['inline-css'], $global_output );

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}

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if ( ! $this->is_head_placement && $this->wrapper !== [] ) {

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$output_string = '<div' . Advanced_Ads_Utils::build_html_attributes( $this->wrapper ) . '>'

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. $this->label

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. apply_filters( 'advanced-ads-output-wrapper-before-content-group', '', $this )

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. $output_string

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. apply_filters( 'advanced-ads-output-wrapper-after-content-group', '', $this )

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. '</div>';

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}

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if ( ! empty( $this->ad_args['is_top_level'] ) && ! empty( $this->ad_args['placement_clearfix'] ) ) {

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$output_string .= '<br style="clear: both; display: block; float: none;"/>';

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}

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// filter final group output

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return apply_filters( 'advanced-ads-group-output', $output_string, $this );

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}

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/**

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* Get ordered ids of the ads that belong to the group

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* @return array

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public function get_ordered_ad_ids() {

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// load ads

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$ads = $this->load_all_ads();

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if ( ! is_array( $ads ) ) {

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return [];

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}

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// get ad weights serving as an order here

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$weights = $this->get_ad_weights( array_keys( $ads ) );

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$ad_ids = wp_list_pluck( $ads, 'ID' );

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// remove ads with 0 ad weight and unavailable ads (e.g. drafts).

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foreach ( $weights as $ad_id => $ad_weight ) {

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if ( $ad_weight === 0 || ! in_array( $ad_id, $ad_ids, true ) ) {

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unset( $weights[ $ad_id ] );

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}

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}

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// order ads based on group type

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if ( $this->type === 'ordered' ) {

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$ordered_ad_ids = $this->shuffle_ordered_ads( $weights );

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} else { // default

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$ordered_ad_ids = $this->shuffle_ads( $ads, $weights );

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}

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return apply_filters( 'advanced-ads-group-output-ad-ids', $ordered_ad_ids, $this->type, $ads, $weights, $this );

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}

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/**

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* Return all ads from this group

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* @since 1.0.0

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public function get_all_ads() {

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return $this->load_all_ads();

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}

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/**

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* Load all public ads for this group

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* @since 1.0.0

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* @update 1.1.0 load only public ads

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* @update allow to cache groups for few minutes

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* @return bool|WP_Post[] $ads array with ad (post) objects

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private function load_all_ads() {

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if ( ! $this->id ) {

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return [];

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}

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if ( false !== $this->ads ) {

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return $this->ads;

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}

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// Much more complex than needed: one of the three queries is not needed and the last query gets slow quiet fast.

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$args = [

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'post_type' => $this->post_type,

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'post_status' => 'publish',

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'posts_per_page' => -1,

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'taxonomy' => $this->taxonomy,

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'term' => $this->slug,

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'orderby' => 'id', // Might want to avoid sorting as not needed for most calls and fast in PHP; slight I/O blocking concern.

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];

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$ads = new WP_Query( $args );

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if ( $ads->have_posts() ) {

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$this->ads = $this->add_post_ids( $ads->posts );

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} else {

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$this->ads = [];

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}

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return $this->ads;

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}

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/**

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* Use post ids as keys for ad array

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* @since 1.0.0

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* @param array $ads array with post objects.

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* @return array $ads array with post objects with post id as their key.

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private function add_post_ids( array $ads ) {

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return array_reduce(

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$ads,

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function( $ads, $ad ) {

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$ads[ $ad->ID ] = $ad;

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return $ads;

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[]

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);

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}

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/**

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* Shuffle ads based on ad weight.

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* @param array $ads ad objects.

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* @param array $weights ad weights, indexed by ad id.

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* @return array

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* @since 1.0.0

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public function shuffle_ads( $ads, $weights ) {

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// get a random ad for every ad there is

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$shuffled_ads = [];

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// while non-zero weights are set select random next

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// phpcs:ignore WordPress.CodeAnalysis.AssignmentInCondition.FoundInWhileCondition -- prevents code duplication.

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while ( null !== ( $random_ad_id = $this->get_random_ad_by_weight( $weights ) ) ) {

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// remove chosen ad from weights array

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unset( $weights[ $random_ad_id ] );

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// put random ad into shuffled array

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if ( ! empty( $ads[ $random_ad_id ] ) ) {

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$shuffled_ads[] = $random_ad_id;

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}

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}

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return $shuffled_ads;

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}

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/**

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* Shuffle ads that have the same width.

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* @since untagged

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* @param array $weights Array of $ad_id => weight pairs.

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* @return array $ordered_ad_ids Ordered ad ids.

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public function shuffle_ordered_ads( array $weights ) {

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// order to highest weight first

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arsort( $weights );

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$ordered_ad_ids = array_keys( $weights );

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$weights = array_values( $weights );

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$count = count( $weights );

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$pos = 0;

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for ( $i = 1; $i <= $count; $i++ ) {

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if ( $i == $count || $weights[ $i ] !== $weights[ $i - 1] ) {

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$slice_len = $i - $pos;

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if ( $slice_len !== 1 ) {

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$shuffled = array_slice( $ordered_ad_ids, $pos, $slice_len );

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shuffle ( $shuffled );

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// Replace the unshuffled chunk with the shuffled one.

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array_splice( $ordered_ad_ids, $pos, $slice_len, $shuffled );

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}

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$pos = $i;

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}

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}

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return $ordered_ad_ids;

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}

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/**

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* Get random ad by ad weight.

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* @since 1.0.0

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* @param array $ad_weights Indexed by ad_id [int $ad_id => int $weight].

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* @source applied with fix for order http://stackoverflow.com/a/11872928/904614

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* @return null|int

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private function get_random_ad_by_weight(array $ad_weights) {

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// use maximum ad weight for ads without this

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// ads might have a weight of zero (0); to avoid mt_rand fail assume that at least 1 is set.

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$max = array_sum( $ad_weights );

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if ( $max < 1 ) {

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return null;

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}

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$rand = mt_rand( 1, $max );

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foreach ( $ad_weights as $ad_id => $weight ) {

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$rand -= $weight;

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if ( $rand <= 0 ) {

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return $ad_id;

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}

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}

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return null;

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}

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/**

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* Get weights of ads in this group

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[495] Fix | Delete

* @param array $ad_ids Ids of ads assigned to this group.

[496] Fix | Delete

[497] Fix | Delete

* @return array

[498] Fix | Delete

[499] Fix | Delete