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<?php
namespace Elementor\Modules\PerformanceLab;

use Elementor\Core\Base\Module as BaseModule;
use Elementor\Plugin;

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

class Module extends BaseModule {

    const PERFORMANCE_LAB_FUNCTION_NAME = 'webp_uploads_img_tag_update_mime_type';
    const PERFORMANCE_LAB_OPTION_NAME = 'site-health/webp-support';

    public function get_name() {
        return 'performance-lab';
    }

    private function is_performance_lab_is_active() {
        if ( function_exists( self::PERFORMANCE_LAB_FUNCTION_NAME ) ) {
            $perflab_modules_settings = get_option( self::PERFORMANCE_LAB_OPTION_NAME, [] );
            if ( isset( $perflab_modules_settings ) && isset( $perflab_modules_settings[ self::PERFORMANCE_LAB_OPTION_NAME ] ) &&
                            '1' === $perflab_modules_settings[ self::PERFORMANCE_LAB_OPTION_NAME ]['enabled'] ) {
                return true;
            }
        }
        return false;
    }

    private function performance_lab_get_webp_src( $attachment_id, $size, $url ) {
        $image_object = wp_get_attachment_image_src( $attachment_id, $size );
        $image_src = call_user_func( self::PERFORMANCE_LAB_FUNCTION_NAME, $image_object[0], 'webp', $attachment_id );
        if ( ! empty( $image_src ) ) {
            return $image_src;
        }
        return $url;
    }

    private function replace_css_with_webp( $value, $css_property, $matches ) {
        if ( 0 === strpos( $css_property, 'background-image' ) && '{{URL}}' === $matches[0] ) {
            $value['url'] = $this->performance_lab_get_webp_src( $value['id'], 'full', $value['url'] );
        }
        return $value;
    }

    public function __construct() {
        parent::__construct();

        if ( $this->is_performance_lab_is_active() ) {
            add_filter( 'elementor/files/css/property', function( $value, $css_property, $matches ) {
                return $this->replace_css_with_webp( $value, $css_property, $matches );
            }, 10, 3 );
        }
    }
}