/**
 * @package ACF
 * @author  WP Engine
 *
 * © 2025 Advanced Custom Fields (ACF®). All rights reserved.
 * "ACF" is a trademark of WP Engine.
 * Licensed under the GNU General Public License v2 or later.
 * https://www.gnu.org/licenses/gpl-2.0.html
 */

/**
 * Process updating bidirectional fields.
 *
 * @since 6.2
 *
 * @param array          $target_item_ids The post, user or term IDs which should be updated with the origin item ID.
 * @param integer|string $post_id         The ACF encoded origin post, user or term ID.
 * @param array          $field           The field being updated on the origin post, user or term ID.
 * @param string|false   $target_prefix   The ACF prefix for a post, user or term ID required for the update_field call for this field type.
 */
function acf_update_bidirectional_values( $target_item_ids, $post_id, $field, $target_prefix = false ) {

	// Bail early if we're already updating a bidirectional relationship to prevent recursion.
	if ( acf_get_data( 'acf_doing_bidirectional_update' ) ) {
		return;
	}

	// Support disabling bidirectionality globally.
	if ( ! acf_get_setting( 'enable_bidirection' ) ) {
		return;
	}

	if ( empty( $field['bidirectional'] ) || empty( $field['bidirectional_target'] ) ) {
		return;
	}

	$decoded            = acf_decode_post_id( $post_id );
	$item_id            = $decoded['id'];
	$valid_target_types = acf_get_valid_bidirectional_target_types( $decoded['type'] );
	$valid_targets      = array();

	foreach ( $field['bidirectional_target'] as $target_field ) {
		$target_field_object = get_field_object( $target_field );
		if ( empty( $target_field_object ) || ! is_array( $target_field_object ) ) {
			continue;
		}
		if ( in_array( $target_field_object['type'], $valid_target_types, true ) ) {
			$valid_targets[] = $target_field;
		}
	}

	if ( ! empty( $valid_targets ) ) {

		// Get current values for this field.
		$current_values = array_filter( acf_get_array( get_field( $field['key'], $post_id, false ) ) );
		$new_values     = array_filter( acf_get_array( $target_item_ids ) );

		$additions    = array_diff( $new_values, $current_values );
		$subtractions = array_diff( $current_values, $new_values );

		// Prefix additions and subtractions for destinations which aren't posts.
		if ( ! empty( $target_prefix ) ) {
			$mapper       = function ( $v ) use ( $target_prefix ) {
				return $target_prefix . '_' . $v;
			};
			$additions    = array_map( $mapper, $additions );
			$subtractions = array_map( $mapper, $subtractions );
		}

		acf_set_data( 'acf_doing_bidirectional_update', true );

		// Loop over each target, processing additions and removals.
		foreach ( $valid_targets as $target_field ) {
			foreach ( $additions as $addition ) {
				$current_value = acf_get_array( get_field( $target_field, $addition, false ) );
				update_field( $target_field, array_unique( array_merge( $current_value, array( $item_id ) ) ), $addition );
			}

			foreach ( $subtractions as $subtraction ) {
				$current_value = acf_get_array( get_field( $target_field, $subtraction, false ) );
				update_field( $target_field, array_unique( array_diff( $current_value, array( $item_id ) ) ), $subtraction );
			}
		}

		acf_set_data( 'acf_doing_bidirectional_update', false );
	}
}

/**
 * Allows third party fields to enable support as a target field type for a particular object type
 *
 * @since 6.2
 *
 * @param string $object_type The object type that will be updated on the target field, such as 'term', 'user' or 'post'.
 *
 * @return array An array of valid field type names (slugs) for the target of the bidirectional field.
 */
function acf_get_valid_bidirectional_target_types( $object_type ) {
	$valid_target_types = array();
	switch ( $object_type ) {
		case 'term':
			$valid_target_types = array( 'taxonomy' );
			break;
		case 'user':
			$valid_target_types = array( 'user' );
			break;
		case 'post':
			$valid_target_types = array( 'relationship', 'post_object' );
			break;
	}
	return apply_filters( 'acf/bidirectional/supported_field_types_for_post', $valid_target_types, $object_type );
}

/**
 * Build the complete choices argument for rendering the select2 field for bidirectional target based on the currently selected choices
 *
 * @since 6.2
 *
 * @param array $choices The currently selected choices (as an array of field keys).
 *
 * @return array
 */
function acf_build_bidirectional_target_current_choices( $choices ) {
	if ( empty( $choices ) ) {
		return array();
	}

	$results = array();
	foreach ( $choices as $choice ) {
		if ( empty( $choice ) || ! is_string( $choice ) ) {
			continue;
		}

		$field_object = get_field_object( $choice );
		if ( is_array( $field_object ) && ! empty( $field_object['label'] ) ) {
			$results[ $choice ] = $field_object['label'];
		} else {
			$results[ $choice ] = $choice;
		}
	}

	return $results;
}

/**
 * Build valid fields for a bidirectional relationship for select2 display
 *
 * @since 6.2
 *
 * @param array $results The original results array.
 * @param array $options The options provided to the select2 AJAX search.
 *
 * @return array
 */
function acf_build_bidirectional_relationship_field_target_args( $results, $options ) {
	$valid_field_types = apply_filters( 'acf/bidirectional/supported_target_field_types', array( 'relationship', 'post_object', 'user', 'taxonomy' ) );

	$field_groups = array_filter(
		acf_get_field_groups(),
		function ( $field_group ) {
			return $field_group['active'];
		}
	);

	$valid_fields = array();
	foreach ( $field_groups as $field_group ) {
		$fields = acf_get_fields( $field_group );
		foreach ( $fields as $field ) {
			if ( in_array( $field['type'], $valid_field_types, true ) ) {
				if ( empty( $valid_fields[ $field_group['title'] ] ) ) {
					$valid_fields[ $field_group['title'] ] = array();
				}
				$valid_fields[ $field_group['title'] ][ $field['key'] ] = array(
					'type'  => $field['type'],
					'label' => $field['label'],
				);

				if ( isset( $options['parent_key'] ) && $options['parent_key'] === $field['key'] ) {
					$valid_fields[ $field_group['title'] ][ $field['key'] ]['this_field'] = true;
				}
			}
		}
	}

	foreach ( $valid_fields as $field_group_name => $fields ) {
		$field_group = array(
			'text'     => $field_group_name,
			'children' => array(),
		);
		foreach ( $fields as $key => $data ) {
			$field_group['children'][] = array(
				'id'               => $key,
				'text'             => $data['label'],
				'field_type'       => $data['type'],
				/* translators: %s A field type name, such as "Relationship" */
				'human_field_type' => sprintf( __( '%s Field', 'acf' ), acf_get_field_type_prop( $data['type'], 'label' ) ),
				'this_field'       => ! empty( $data['this_field'] ),
			);
		}
		$results['results'][] = $field_group;
	}

	return $results;
}

add_action( 'acf/fields/select/query/key=_acf_bidirectional_target', 'acf_build_bidirectional_relationship_field_target_args', 10, 2 );

/**
 * Renders the field settings required for bidirectional fields
 *
 * @since 6.2
 *
 * @param array $field The field object passed into field setting functions.
 */
function acf_render_bidirectional_field_settings( $field ) {
	if ( ! acf_get_setting( 'enable_bidirection' ) ) {
		return;
	}

	acf_render_field_setting(
		$field,
		array(
			'label'        => __( 'Bidirectional', 'acf' ),
			'instructions' => __( 'Update a field on the selected values, referencing back to this ID', 'acf' ),
			'type'         => 'true_false',
			'name'         => 'bidirectional',
			'ui'           => 1,
		)
	);

	acf_render_field_setting(
		$field,
		array(
			'name'       => 'bidirectional_notes',
			'type'       => 'message',
			'message'    => acf_get_bidirectional_field_settings_instruction_text(),
			'conditions' => array(
				'field'    => 'bidirectional',
				'operator' => '==',
				'value'    => 1,
			),
		)
	);

	acf_render_field_setting(
		$field,
		array(
			'type'         => 'select',
			'name'         => 'bidirectional_target',
			'label'        => __( 'Target Field', 'acf' ),
			'instructions' => __( 'Select field(s) to store the reference back to the item being updated. You may select this field. Target fields must be compatible with where this field is being displayed. For example, if this field is displayed on a Taxonomy, your target field should be of type Taxonomy', 'acf' ),
			'class'        => 'bidrectional_target',
			'choices'      => acf_build_bidirectional_target_current_choices( $field['bidirectional_target'] ),
			'conditions'   => array(
				'field'    => 'bidirectional',
				'operator' => '==',
				'value'    => 1,
			),
			'ui'           => 1,
			'multiple'     => 1,
			'ajax'         => 1,
		)
	);
}

/**
 * Returns the translated instructional text for the message field for the bidirectional field settings.
 *
 * @since 6.2
 *
 * @return string The html containing the instructional message.
 */
function acf_get_bidirectional_field_settings_instruction_text() {
	/* translators: %s the URL to ACF's bidirectional relationship documentation */
	$message = '<p class="acf-feature-notice with-warning-icon">' . sprintf( __( 'Enabling the bidirectional setting allows you to update a value in the target fields for each value selected for this field, adding or removing the Post ID, Taxonomy ID or User ID of the item being updated. For more information, please read the <a href="%s" target="_blank">documentation</a>.', 'acf' ), acf_add_url_utm_tags( 'https://www.advancedcustomfields.com/resources/bidirectional-relationships/', 'docs', 'bidirectional' ) ) . '</p>';
	return $message;
}
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	<title>Doc Docherty LIVE ACT Instant Download &#8211; Penguin Magic &#8211; Erdnase Magic Store</title>
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		<title>Doc Docherty &#8211; Penguin LIVE ACT (October 20th, 2019)</title>
		<link>https://erdnasemagicstore.io/product/doc-docherty-penguin-live-act-october-20th-2019/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=doc-docherty-penguin-live-act-october-20th-2019</link>
		
		<dc:creator><![CDATA[Single]]></dc:creator>
		<pubDate>Mon, 13 Jan 2020 00:00:00 +0000</pubDate>
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					<description><![CDATA[<span style="color: #00ff00;"><b>SUPPORT LIVE MAGIC. START LEARNING THE FULL ACT TODAY.</b></span>]]></description>
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<p>&nbsp;</p>
<h1>What will he teach?</h1>
<p>Close up restaurant style performances that are easy to learn, and most of all makes the spectators feel like they did the magic!</p>
<p><strong>Narlo’s Invisible Palm Aces &#8211;</strong> The spectator is the magician as they palm and transfer invisible Kings from one pile to another. To make it even better the spectator turns them into four Aces!</p>
<p><strong>World Famous Salt(Sugar) Trick &#8211;</strong> a restaurant favorite where sugar vanished and reappears in a napkin. A great TT steal is used to create a stunning effect that can be recalled during the entire walk around set.</p>
<p><strong>Card at Unknown Number &#8211;</strong> A random number is created but unknown until the deck is out of the magicians hands. Then the previously selected card is at that number!</p>
<p><strong>Invisible Biddle &#8211;</strong> The classic Biddle trick where the spectator turns his card invisible as soon as they touch it!</p>
<p><strong>The Vegas Test &#8211;</strong> The spectator is tested on wether or not a Vegas trip would be a good choice. The spectator passes the test with flying colors!</p>
<p><strong>The Eagles Mean They Can Fly &#8211;</strong> Doc’s walk around coins across handling.</p>
<p><strong>Fire Voodoo &#8211;</strong> A 100 percent free choice of ESP symbols is revealed through using fire!!!</p>
<p><strong>Super Easy Double Leaper &#8211;</strong> a new handling of a classic from Expert Card Technique that requires no palming.</p>
<p><strong>In through the Outdoor &#8211;</strong> a classic puzzle , the In &amp; Out boxes updated with a solid ending!!!</p>
<p><strong>Card to Wallet &#8211;</strong> Doc’s favorite way to end a ACR is this. This handling gives a reason to bring the wallet into play and is very easy and can be done without a palm.</p>
<h1>Who is he?</h1>
<p>From North Carolina this is Doc’s second appearance the P3 studios. Doc has been performing and creating magic for over 25 years. From the early days at theme parks to street performing to corporate and private events Doc has had a wide variety of different audiences to hone his skills in the art of magic and sleight of hand.</p>
<p>Doc started performing magic around 9 years old. By 17 was hired to work at a Paramount Theme Park. There he was able to get real world experience by performing 8 shows a day. Learning about presentation and improv.</p>
<p>Years followed with countless restaurant and private gigs. In the early 2000s Doc opened up a magic store and followed by creating The East Coast Super Session which is now called TRICS held in Charlotte, NC every year.</p>
<p>Author of 3 books and creator of the spectacular Zoso Change and deceptive Groove Electric Switch.</p>
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