<?php
namespace EverCompare\Frontend;
/**
 * Shortcode handler class
 */
class Shortcode {

    /**
     * [$_instance]
     * @var null
     */
    private static $_instance = null;

    /**
     * [instance] Initializes a singleton instance
     * @return [Base]
     */
    public static function instance() {
        if ( is_null( self::$_instance ) ) {
            self::$_instance = new self();
        }
        return self::$_instance;
    }

    /**
     * Initializes the class
     */
    function __construct() {
        add_shortcode( 'evercompare_button', [ $this, 'button_shortcode' ] );
        add_shortcode( 'evercompare_table', [ $this, 'table_shortcode' ] );
    }

    /**
     * [button_shortcode] Compare Button Shortcode callable function
     * @param  [type] $atts 
     * @param  string $content
     * @return [HTML] 
     */
    public function button_shortcode( $atts, $content = '' ){
        wp_enqueue_style( 'evercompare-frontend' );
        wp_enqueue_script( 'evercompare-frontend' );

        global $product;

        // Fetch option data
        $button_text        = ever_compare_get_option( 'button_text','ever_compare_table_settings_tabs', 'Compare' );
        $button_added_text  = ever_compare_get_option( 'added_button_text','ever_compare_table_settings_tabs', 'Added' );

        $button_class = array(
            'htcompare-btn',
            'button',
        );

        // Shortcode atts
        $default_atts = array(
            'product_id'        => $product->get_id(),
            'button_url'        => Manage_Compare::instance()->get_compare_page_url(),
            'button_class'      => implode(' ', $button_class ),
            'button_text'       => $button_text,
            'button_added_text' => $button_added_text,
            'template_name'     => 'add',
        );

        $atts = shortcode_atts( $default_atts, $atts, $content );
        return Manage_Compare::instance()->button_html( $atts );

    }

    /**
     * [table_shortcode] Compare table shortcode callable function
     * @param  [type] $atts
     * @param  string $content
     * @return [HTML] 
     */
    public function table_shortcode( $atts, $content = '' ){
        wp_enqueue_style( 'evercompare-frontend' );
        wp_enqueue_script( 'evercompare-frontend' );

        /* Fetch From option data */
        $empty_compare_text = ever_compare_get_option('empty_table_text','ever_compare_table_settings_tabs');
        $return_shop_button = ever_compare_get_option('shop_button_text','ever_compare_table_settings_tabs','Return to shop');

        /* Product and Field */
        $products   = Manage_Compare::instance()->get_compared_products_data();
        $fields     = Manage_Compare::instance()->get_compare_fields();

        $custom_heading = !empty( ever_compare_get_option( 'table_heading', 'ever_compare_table_settings_tabs' ) ) ? ever_compare_get_option( 'table_heading', 'ever_compare_table_settings_tabs' ) : array();

        $default_atts = array(
            'evercompare'  => Manage_Compare::instance(),
            'products'     => $products,
            'fields'       => $fields,
            'return_shop_button'=> $return_shop_button,
            'heading_txt'       => $custom_heading,
            'empty_compare_text'=> $empty_compare_text,
        );

        $atts = shortcode_atts( $default_atts, $atts, $content );
        return Manage_Compare::instance()->table_html( $atts );

    }


}