<?php
/**
 * Extend WP_Customize_Control to add the sortable control.
 *
 * Class Zakra_Sortable_Control
 *
 * @package    ThemeGrill
 * @subpackage Zakra
 * @since      Zakra 3.0.0
 */

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

/**
 * Class to extend WP_Customize_Control to add the sortable customize control.
 *
 * Class Zakra_Sortable_Control
 */
class Zakra_Sortable_Control extends Zakra_Customize_Base_Additional_Control {

	/**
	 * Control's Type.
	 *
	 * @var string
	 */
	public $type       = 'zakra-sortable';
	public $unsortable = array();

	/**
	 * Refresh the parameters passed to the JavaScript via JSON.
	 *
	 * @see WP_Customize_Control::to_json()
	 */
	public function to_json() {
		parent::to_json();
		$this->json['default'] = $this->setting->default;
		if ( isset( $this->default ) ) {
			$this->json['default'] = $this->default;
		}
		$this->json['value']       = $this->value();
		$this->json['link']        = $this->get_link();
		$this->json['id']          = $this->id;
		$this->json['label']       = esc_html( $this->label );
		$this->json['description'] = $this->description;
		$this->json['choices']     = array();
		$this->json['unsortable']  = array();
		$this->json['inputAttrs']  = '';

		foreach ( $this->choices as $key => $value ) {
			if ( in_array( $key, $this->unsortable, true ) ) {
				continue;
			}

			$this->json['choices'][ $key ] = $value;
		}

		foreach ( $this->unsortable as $item ) {
			if ( in_array( $item, array_keys( $this->choices ), true ) ) {
				$this->json['unsortable'][ $item ] = $this->choices[ $item ];
			}
		}

		foreach ( $this->input_attrs as $attr => $value ) {
			$this->json['inputAttrs'] .= $attr . '="' . esc_attr( $value ) . '" ';
		}
	}

	/**
	 * An Underscore (JS) template for this control's content (but not its container).
	 *
	 * Class variables for this control class are available in the `data` JS object;
	 * export custom variables by overriding {@see WP_Customize_Control::to_json()}.
	 *
	 * @see    WP_Customize_Control::print_template()
	 */
	protected function content_template() {
		?>

		<div class="customizer-text">
			<# if ( data.label ) { #>
			<span class="customize-control-title">{{{ data.label }}}</span>
			<# } #>

			<# if ( data.description ) { #>
			<span class="description customize-control-description">{{{ data.description }}}</span>
			<# } #>
		</div>

		<ul class="unsortable">
			<# _.each( data.unsortable, function( choiceLabel, choiceID ) { #>
			<# if( _.contains( data.value, choiceID ) ){ #>
			<li {{{ data.inputAttrs }}} class='zakra-sortable-item' data-value='{{ choiceID }}'>
				<i class="dashicons dashicons-visibility visibility"></i>
				{{{ choiceLabel }}}
			</li>
			<# }else { #>
			<li {{{ data.inputAttrs }}} class='zakra-sortable-item invisible' data-value='{{ choiceID }}'>
				<i class="dashicons dashicons-visibility visibility"></i>
				{{{ choiceLabel }}}
			</li>
			<# } #>

			<# } ); #>
		</ul>

		<ul class="sortable">
			<# _.each( data.value, function( choiceID ) { #>
			<# if ( data.choices[ choiceID ] ) { #>
			<li {{{ data.inputAttrs }}} class='zakra-sortable-item' data-value='{{ choiceID }}'>
				<i class='dashicons dashicons-menu'></i>
				<i class="dashicons dashicons-visibility visibility"></i>
				{{{ data.choices[ choiceID ] }}}
			</li>
			<# } #>
			<# } ); #>

			<# _.each( data.choices, function( choiceLabel, choiceID ) { #>
			<# if ( Array.isArray(data.value) && -1 === data.value.indexOf( choiceID ) ) { #>
			<li {{{ data.inputAttrs }}} class='zakra-sortable-item invisible' data-value='{{ choiceID }}'>
				<i class='dashicons dashicons-menu'></i>
				<i class="dashicons dashicons-visibility visibility"></i>
				{{{ choiceLabel }}}
			</li>
			<# } #>
			<# } ); #>
		</ul>

		<?php
	}

	/**
	 * Don't render the control content from PHP, as it's rendered via JS on load.
	 */
	public function render_content() {
	}

}
