<?php
/**
 * Interface Builder module
 *
 * Version: 1.5.0
 */

// If this file is called directly, abort.
if ( ! defined( 'WPINC' ) ) {
	die;
}

if ( ! class_exists( 'CX_Interface_Builder' ) ) {

	/**
	 * Class Cherry Interface Builder.
	 *
	 * @since 1.0.0
	 */
	class CX_Interface_Builder {

		/**
		 * Module directory path.
		 *
		 * @since 1.5.0
		 * @access protected
		 * @var srting.
		 */
		protected $path;

		/**
		 * Module directory URL.
		 *
		 * @since 1.5.0
		 * @access protected
		 * @var srting.
		 */
		protected $url;

		/**
		 * Module version
		 *
		 * @var string
		 */
		protected $version = '1.5.0';

		/**
		 * Conditions
		 *
		 * @var array
		 */
		public static $conditions = array();

		/**
		 * [$conditions description]
		 * @var array
		 */
		public static $fields_value = array();

		/**
		 * Module settings.
		 *
		 * @since  1.0.0
		 * @access private
		 * @var    array
		 */
		private $args = array(
			'path'  => '',
			'url'   => '',
			'views' => array(
				'section'                  => 'views/section.php',
				'component-tab-vertical'   => 'views/component-tab-vertical.php',
				'component-tab-horizontal' => 'views/component-tab-horizontal.php',
				'component-toggle'         => 'views/component-toggle.php',
				'component-accordion'      => 'views/component-accordion.php',
				'component-repeater'       => 'views/component-repeater.php',
				'settings'                 => 'views/settings.php',
				'control'                  => 'views/control.php',
				'settings-children-title'  => 'views/settings-children-title.php',
				'tab-children-title'       => 'views/tab-children-title.php',
				'toggle-children-title'    => 'views/toggle-children-title.php',
				'form'                     => 'views/form.php',
				'html'                     => 'views/html.php',
			),
			'views_args' => array(
				'parent'        => '',
				'type'          => '',
				'view'          => '',
				'view_wrapping' => true,
				'html'          => '',
				'scroll'        => false,
				'title'         => '',
				'description'   => '',
				'condition'     => array(),
			),
		);

		/**
		 * A reference to an instance of this class.
		 *
		 * @since 1.0.0
		 * @access private
		 * @var object
		 */
		private static $instance = null;

		/**
		 * UI element instance.
		 *
		 * @since  1.0.0
		 * @access public
		 * @var    object
		 */
		public $controls = null;

		/**
		 * The structure of the interface elements.
		 *
		 * @since  1.0.0
		 * @access private
		 * @var    array
		 */
		private $structure = array();

		/**
		 * Dependencies array
		 * @var array
		 */
		private static $deps = array(
			'css' => array(),
			'js'  => array( 'jquery' ),
		);

		/**
		 * Cherry_Interface_Builder constructor.
		 *
		 * @since  1.0.0
		 * @access public
		 * @return void
		 */
		public function __construct( array $args = array() ) {

			$this->path = $args['path'];
			$this->url  = $args['url'];

			$this->args = array_merge(
				$this->args,
				$args
			);

			add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_assets' ) );

			require trailingslashit( $this->path ) . 'inc/class-cx-controls-manager.php';

			$this->controls = new CX_Controls_Manager( $this->path, $this->url );

		}

		/**
		 * Register element type section.
		 *
		 * @since  1.0.0
		 * @access public
		 * @param  array $args Options section.
		 * @return void
		 */
		public function register_section( array $args = array() ) {
			$this->add_new_element( $args, 'section' );
		}

		/**
		 * Register element type component.
		 *
		 * @since  1.0.0
		 * @access public
		 * @param  array $args Options component.
		 * @return void
		 */
		public function register_component( array $args = array() ) {
			$this->add_new_element( $args, 'component' );
		}

		/**
		 * Register element type settings.
		 *
		 * @since  1.0.0
		 * @access public
		 * @param  array $args Options settings.
		 * @return void
		 */
		public function register_settings( array $args = array() ) {
			$this->add_new_element( $args, 'settings' );
		}

		/**
		 * Register element type control.
		 *
		 * @since  1.0.0
		 * @access public
		 * @param  array $args Options control.
		 * @return void
		 */
		public function register_control( array $args = array() ) {
			$this->add_new_element( $args, 'control' );
		}

		/**
		 * Register element type form.
		 *
		 * @since  1.0.0
		 * @access public
		 * @param  array $args Options form.
		 * @return void
		 */
		public function register_form( array $args = array() ) {
			$this->add_new_element( $args, 'form' );
		}

		/**
		 * Register element type html.
		 *
		 * @since  1.0.0
		 * @access public
		 * @param  array $args Options control.
		 * @return void
		 */
		public function register_html( array $args = array() ) {
			$this->add_new_element( $args, 'html' );
		}

		/**
		 * This function adds a new element to the structure.
		 *
		 * @since  1.0.0
		 * @access protected
		 * @param  array  $args Options new element.
		 * @param  string $type Type new element.
		 * @return void
		 */
		protected function add_new_element( array $args = array(), $type = 'section' ) {

			if ( ! isset( $args[0] ) && ! is_array( current( $args ) ) ) {
					if ( 'control' !== $type && 'component' !== $type ) {
						$args['type'] = $type;
					}

					if ( ! isset( $args['name'] ) && isset( $args['id'] ) ) {
						$args['name'] = $args['id'];
					}

					if ( 'control' ===  $type ) {
						$instance         = $this->controls->register_control( $args['type'], $args );
						$args['instance'] = $instance;

						$this->add_dependencies( $instance );

					}

					if ( array_key_exists( 'conditions', $args ) ) {
						self::$conditions[ $args['id'] ] = $args['conditions'];
					}

					if ( array_key_exists( 'value', $args ) ) {
						self::$fields_value[ $args['id'] ] = $args['value'];
					}

					$this->structure[ $args['id'] ] = $args;

			} else {
				foreach ( $args as $key => $value ) {

					if ( 'control' !== $type && 'component' !== $type ) {
						$value['type'] = $type;
					}

					if ( ! isset( $value['id'] ) ) {
						$value['id'] = $key;
					}
					if ( ! isset( $value['name'] ) ) {
						$value['name'] = $key;
					}

					if ( 'control' ===  $type ) {
						$instance          = $this->controls->register_control( $value['type'], $value );
						$value['instance'] = $instance;

						$this->add_dependencies( $instance );
					}

					if ( array_key_exists( 'conditions', $value ) ) {
						self::$conditions[ $key ] = $value['conditions'];
					}

					if ( array_key_exists( 'value', $value ) ) {
						self::$fields_value[ $key ] = $value['value'];
					}

					$this->structure[ $key ] = $value;
				}
			}
		}

		/**
		 * Add control dependencies to global builder deps
		 *
		 * @param [type] $control [description]
		 */
		protected function add_dependencies( $control ) {

			if ( ! $control instanceof CX_Controls_Base ) {
				return;
			}

			self::$deps['js']  = array_merge( self::$deps['js'], $control->get_script_depends() );
			self::$deps['css'] = array_merge( self::$deps['css'], $control->get_style_depends() );

			$constrol_settings = $control->get_settings();

			if ( 'repeater' === $constrol_settings['type'] && ! empty( $constrol_settings['fields'] ) ) {
				foreach ( $constrol_settings['fields'] as $field ) {
					$child_instance = $this->controls->register_control( $field['type'], $field );

					if ( $child_instance ) {

						self::$deps['js']  = array_merge( self::$deps['js'], $child_instance->get_script_depends() );
						self::$deps['css'] = array_merge( self::$deps['css'], $child_instance->get_style_depends() );

					}

				}
			}

		}

		/**
		 * Sorts the elements of the structure, adding child items to the parent.
		 *
		 * @since  1.0.0
		 * @access protected
		 * @param  array  $structure  The original structure of the elements.
		 * @param  string $parent_key The key of the parent element.
		 * @return array
		 */
		protected function sort_structure( array $structure = array(), $parent_key = null ) {