<?php
/**
 * Various metaboxes for this plugin
 *
 * In this class I add some metaboxes to use in various place of the plugin
 * It uses CMB2 for that functionality
 *
 * @since 2.0.0
 *
 * @package ItalyStrap
 */

namespace ItalyStrap\Custom\Metaboxes;

if ( ! defined( 'ITALYSTRAP_PLUGIN' ) or ! ITALYSTRAP_PLUGIN ) {
	die();
}

use CMB2;

/**
 * Add some metaboxes in admin area with CMB2
 */
class CMB2_Loader {

	protected $cmb = null;

	/**
	 * The plugin options
	 *
	 * @var array
	 */
	protected $options = array();

	protected $config = array();

	protected $default = array(
		'name'		=> '',
		'desc'		=> '',
		'id'		=> '',
		'type'		=> 'text',
		'default'	=> '',
		'sanitize'	=> 'sanitize_text_field',
		'show_on'	=> true,
	);

	protected $config_default = array(
		'id'			=> '',
		'title'			=> '',
		'object_types'	=> array(),
		'context'		=> 'normal',
		'priority'		=> 'low',
	);

	/**
	 * Init the constructor
	 *
	 * @param array $options The plugin options
	 */
	public function __construct( array $config = array() ) {
		$this->config = $config;
	}

	/**
	 * Load CMB2
	 *
	 * @param  array $config Configuration array for CMB2
	 */
	public function load() {

		/**
		 * This prevents that the CMB2 autoload the fields itself.
		 */
		$fields = $this->config['fields'];
		unset( $this->config['fields'] );

		$this->cmb = new_cmb2_box( array_merge( $this->config_default, $this->config ) );

		$this->generate_fields( $this->cmb, $fields );
	}

	/**
	 * Generate fields
	 *
	 * @param  string $value [description]
	 * @return string        [description]
	 */
	public function generate_fields( CMB2 $cmb, array $fields ) {

		foreach ( $fields as $field ) {
			$field = $this->add_field( $field );

			if ( isset( $field['group'] ) ) {
				foreach ( $field['group'] as $group_field ) {
					$this->add_group_field( $field, $group_field );
				}
			}
		}
	}

	/**
	 * Add fields
	 *
	 * @param  array $fields An array with fields configuration.
	 */
	public function add_field( array $field ) {

		$field = array_merge( $this->default, $field );

		if ( ! $field['show_on'] ) {
			return false;
		}

		$this->cmb->add_field( $field );
	}

	/**
	 * Add group fields
	 *
	 * @param  string $id     The parent field id of the group field to add the field.
	 * @param  array  $fields An array with fields configuration.
	 */
	public function add_group_field( $id, array $field ) {

		$field = array_merge( $this->default, $field );

		if ( ! $field['show_on'] ) {
			return false;
		}

		$this->cmb->add_group_field( $id, $field );
	}
}