<?php

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly
}

if ( ! class_exists( 'acf_fields' ) ) :
	#[AllowDynamicProperties]
	class acf_fields {

		/** @var array Contains an array of field type instances */
		var $types = array();


		/*
		*  __construct
		*
		*  This function will setup the class functionality
		*
		*  @type    function
		*  @date    5/03/2014
		*  @since   5.4.0
		*
		*  @param   n/a
		*  @return  n/a
		*/

		function __construct() {
			/* do nothing */
		}


		/*
		*  register_field_type
		*
		*  This function will register a field type instance
		*
		*  @type    function
		*  @date    6/07/2016
		*  @since   5.4.0
		*
		*  @param   $class (string)
		*  @return  n/a
		*/

		function register_field_type( $class ) {

			// allow instance
			if ( $class instanceof acf_field ) {
				$this->types[ $class->name ] = $class;

				// allow class name
			} else {
				$instance                       = new $class();
				$this->types[ $instance->name ] = $instance;
			}
		}


		/*
		*  get_field_type
		*
		*  This function will return a field type instance
		*
		*  @type    function
		*  @date    6/07/2016
		*  @since   5.4.0
		*
		*  @param   $name (string)
		*  @return  (mixed)
		*/

		function get_field_type( $name ) {
			return isset( $this->types[ $name ] ) ? $this->types[ $name ] : null;
		}


		/*
		*  is_field_type
		*
		*  This function will return true if a field type exists
		*
		*  @type    function
		*  @date    6/07/2016
		*  @since   5.4.0
		*
		*  @param   $name (string)
		*  @return  (mixed)
		*/

		function is_field_type( $name ) {
			return isset( $this->types[ $name ] );
		}


		/*
		*  register_field_type_info
		*
		*  This function will store a basic array of info about the field type
		*  to later be overriden by the above register_field_type function
		*
		*  @type    function
		*  @date    29/5/17
		*  @since   5.6.0
		*
		*  @param   $info (array)
		*  @return  n/a
		*/

		function register_field_type_info( $info ) {

			// convert to object
			$instance                       = (object) $info;
			$this->types[ $instance->name ] = $instance;
		}


		/*
		*  get_field_types
		*
		*  This function will return an array of all field types
		*
		*  @type    function
		*  @date    6/07/2016
		*  @since   5.4.0
		*
		*  @param   $name (string)
		*  @return  (mixed)
		*/

		function get_field_types() {
			return $this->types;
		}
	}


	// initialize
	acf()->fields = new acf_fields();

endif; // class_exists check


/*
*  acf_register_field_type
*
*  alias of acf()->fields->register_field_type()
*
*  @type    function
*  @date    31/5/17
*  @since   5.6.0
*
*  @param   n/a
*  @return  n/a
*/

function acf_register_field_type( $class ) {
	return acf()->fields->register_field_type( $class );
}


/*
*  acf_register_field_type_info
*
*  alias of acf()->fields->register_field_type_info()
*
*  @type    function
*  @date    31/5/17
*  @since   5.6.0
*
*  @param   n/a
*  @return  n/a
*/

function acf_register_field_type_info( $info ) {
	return acf()->fields->register_field_type_info( $info );
}


/*
*  acf_get_field_type
*
*  alias of acf()->fields->get_field_type()
*
*  @type    function
*  @date    31/5/17
*  @since   5.6.0
*
*  @param   n/a
*  @return  n/a
*/

function acf_get_field_type( $name ) {
	return acf()->fields->get_field_type( $name );
}


/*
*  acf_get_field_types
*
*  alias of acf()->fields->get_field_types()
*
*  @type    function
*  @date    31/5/17
*  @since   5.6.0
*
*  @param   n/a
*  @return  n/a
*/

function acf_get_field_types( $args = array() ) {

	// default
	$args = wp_parse_args(
		$args,
		array(
			'public' => true,    // true, false
		)
	);

	// get field types
	$field_types = acf()->fields->get_field_types();

	// filter
	return wp_filter_object_list( $field_types, $args );
}


/**
 *  acf_get_field_types_info
 *
 *  Returns an array containing information about each field type
 *
 *  @date    18/6/18
 *  @since   5.6.9
 *
 *  @param   type $var Description. Default.
 *  @return  type Description.
 */

function acf_get_field_types_info( $args = array() ) {

	// vars
	$data        = array();
	$field_types = acf_get_field_types();

	// loop
	foreach ( $field_types as $type ) {
		$data[ $type->name ] = array_filter(
			array(
				'label'         => $type->label,
				'name'          => $type->name,
				'description'   => $type->description,
				'category'      => $type->category,
				'public'        => $type->public,
				'doc_url'       => $type->doc_url,
				'tutorial_url'  => $type->tutorial_url,
				'preview_image' => $type->preview_image,
				'pro'           => $type->pro,
			)
		);
	}

	// return
	return $data;
}


/*
*  acf_is_field_type
*
*  alias of acf()->fields->is_field_type()
*
*  @type    function
*  @date    31/5/17
*  @since   5.6.0
*
*  @param   n/a
*  @return  n/a
*/

function acf_is_field_type( $name = '' ) {
	return acf()->fields->is_field_type( $name );
}


/*
*  acf_get_field_type_prop
*
*  This function will return a field type's property
*
*  @type    function
*  @date    1/10/13
*  @since   5.0.0
*
*  @param   n/a
*  @return  (array)
*/

function acf_get_field_type_prop( $name = '', $prop = '' ) {
	$type = acf_get_field_type( $name );
	return ( $type && isset( $type->$prop ) ) ? $type->$prop : null;
}


/*
*  acf_get_field_type_label
*
*  This function will return the label of a field type
*
*  @type    function
*  @date    1/10/13
*  @since   5.0.0
*
*  @param   n/a
*  @return  (array)
*/

function acf_get_field_type_label( $name = '' ) {
	$label = acf_get_field_type_prop( $name, 'label' );
	return $label ? $label : '<span class="acf-tooltip-js" title="' . __( 'Field type does not exist', 'acf' ) . '">' . __( 'Unknown', 'acf' ) . '</span>';
}


/*
*  acf_field_type_exists (deprecated)
*
*  deprecated in favour of acf_is_field_type()
*
*  @type    function
*  @date    1/10/13
*  @since   5.0.0
*
*  @param   $type (string)
*  @return  (boolean)
*/

function acf_field_type_exists( $type = '' ) {
	return acf_is_field_type( $type );
}

/**
 * Returns an array of localised field categories.
 *
 * @since 6.1
 *
 * @return array
 */
function acf_get_field_categories_i18n() {

	$categories_i18n = array(
		'basic'      => __( 'Basic', 'acf' ),
		'content'    => __( 'Content', 'acf' ),
		'choice'     => __( 'Choice', 'acf' ),
		'relational' => __( 'Relational', 'acf' ),
		'advanced'   => __( 'Advanced', 'acf' ),
		'layout'     => __( 'Layout', 'acf' ),
		'pro'        => __( 'PRO', 'acf' ),
	);

	return apply_filters( 'acf/localized_field_categories', $categories_i18n );
}


/**
 *  Returns an multi-dimentional array of field types "name => label" grouped by category
 *
 *  @since   5.0.0
 *
 *  @return  array
 */
function acf_get_grouped_field_types() {

	// vars
	$types  = acf_get_field_types();
	$groups = array();
	$l10n   = acf_get_field_categories_i18n();

	// loop
	foreach ( $types as $type ) {

		// translate
		$cat = $type->category;
		$cat = isset( $l10n[ $cat ] ) ? $l10n[ $cat ] : $cat;

		// append
		$groups[ $cat ][ $type->name ] = $type->label;
	}

	// filter
	$groups = apply_filters( 'acf/get_field_types', $groups );

	// return
	return $groups;
}

/**
 *  Returns an array of tabs for a field type.
 *  We combine a list of default tabs with filtered tabs.
 *  I.E. Default tabs should be static and should not be changed by the
 *  filtered tabs.
 *
 *  @since   6.1
 *
 *  @return array Key/value array of the default settings tabs for field type settings.
 */
function acf_get_combined_field_type_settings_tabs() {
	$default_field_type_settings_tabs = array(
		'general'           => __( 'General', 'acf' ),
		'validation'        => __( 'Validation', 'acf' ),
		'presentation'      => __( 'Presentation', 'acf' ),
		'conditional_logic' => __( 'Conditional Logic', 'acf' ),
		'advanced'          => __( 'Advanced', 'acf' ),
	);

	$field_type_settings_tabs = (array) apply_filters( 'acf/field_group/additional_field_settings_tabs', array() );

	// remove any default tab values from filter tabs.
	foreach ( $field_type_settings_tabs as $key => $tab ) {
		if ( isset( $default_field_type_settings_tabs[ $key ] ) ) {
			unset( $field_type_settings_tabs[ $key ] );
		}
	}

	$combined_field_type_settings_tabs = array_merge( $default_field_type_settings_tabs, $field_type_settings_tabs );

	return $combined_field_type_settings_tabs;
}



/**
 * Get the PRO only fields and their core metadata.
 *
 * @since 6.1
 *
 * @return array An array of all the pro field types and their field type selection required meta data.
 */
function acf_get_pro_field_types() {
	return array(
		'clone'            => array(
			'name'          => 'clone',
			'label'         => _x( 'Clone', 'noun', 'acf' ),
			'doc_url'       => acf_add_url_utm_tags( 'https://www.advancedcustomfields.com/resources/clone/', 'docs', 'field-type-selection' ),
			'preview_image' => acf_get_url() . '/assets/images/field-type-previews/field-preview-clone.png',
			'description'   => __( 'This allows you to select and display existing fields. It does not duplicate any fields in the database, but loads and displays the selected fields at run-time. The Clone field can either replace itself with the selected fields or display the selected fields as a group of subfields.', 'acf' ),
			'tutorial_url'  => acf_add_url_utm_tags( 'https://www.advancedcustomfields.com/resources/how-to-use-the-clone-field/', 'docs', 'field-type-selection' ),
			'category'      => 'layout',
			'pro'           => true,
		),
		'flexible_content' => array(
			'name'          => 'flexible_content',
			'label'         => __( 'Flexible Content', 'acf' ),
			'doc_url'       => acf_add_url_utm_tags( 'https://www.advancedcustomfields.com/resources/flexible-content/', 'docs', 'field-type-selection' ),
			'preview_image' => acf_get_url() . '/assets/images/field-type-previews/field-preview-flexible-content.png',
			'description'   => __( 'This provides a simple, structured, layout-based editor. The Flexible Content field allows you to define, create and manage content with total control by using layouts and subfields to design the available blocks.', 'acf' ),
			'tutorial_url'  => acf_add_url_utm_tags( 'https://www.advancedcustomfields.com/resources/building-layouts-with-the-flexible-content-field-in-a-theme/', 'docs', 'field-type-selection' ),
			'category'      => 'layout',
			'pro'           => true,
		),
		'gallery'          => array(
			'name'          => 'gallery',
			'label'         => __( 'Gallery', 'acf' ),
			'doc_url'       => acf_add_url_utm_tags( 'https://www.advancedcustomfields.com/resources/gallery/', 'docs', 'field-type-selection' ),
			'preview_image' => acf_get_url() . '/assets/images/field-type-previews/field-preview-gallery.png',
			'description'   => __( 'This provides an interactive interface for managing a collection of attachments. Most settings are similar to the Image field type. Additional settings allow you to specify where new attachments are added in the gallery and the minimum/maximum number of attachments allowed.', 'acf' ),
			'tutorial_url'  => acf_add_url_utm_tags( 'https://www.advancedcustomfields.com/resources/how-to-use-the-gallery-field/', 'docs', 'field-type-selection' ),
			'category'      => 'content',
			'pro'           => true,
		),
		'repeater'         => array(
			'name'          => 'repeater',
			'label'         => __( 'Repeater', 'acf' ),
			'doc_url'       => acf_add_url_utm_tags( 'https://www.advancedcustomfields.com/resources/repeater/', 'docs', 'field-type-selection' ),
			'preview_image' => acf_get_url() . '/assets/images/field-type-previews/field-preview-repeater.png',
			'description'   => __( 'This provides a solution for repeating content such as slides, team members, and call-to-action tiles, by acting as a parent to a set of subfields which can be repeated again and again.', 'acf' ),
			'tutorial_url'  => acf_add_url_utm_tags( 'https://www.advancedcustomfields.com/resources/repeater/how-to-use-the-repeater-field/', 'docs', 'field-type-selection' ),
			'category'      => 'layout',
			'pro'           => true,
		),
	);
}
