<?php

namespace App\Providers;

use Illuminate\Support\Facades\Blade;
use Illuminate\Support\ServiceProvider;

class GlobalViewDataProvider extends ServiceProvider
{
    /**
     * Bootstrap the application services.
     *
     * @return void
     */
    public function boot()
    {
        view()->share('vendorName', 'ja s.r.o.');

        // extend Blade "@extends" macro - with this macro allows to use "hierarchy" in templates
        Blade::extend(function ($view) {
            $pattern = $this->createPattern('extendVisitor');
            $code = '@extends(\App\Helpers\Template::name($2))';

            return preg_replace($pattern, $code, $view);
        });

        // register extension for rendering widget areas
        Blade::extend(function ($view) {
            $pattern = $this->createPattern('widgetArea');

            return preg_replace($pattern, '<?php \App\Helpers\WidgetAreas::render($2); ?>', $view);
        });

        // register extension for preview of widget
        Blade::extend(function ($view) {
            $pattern = $this->createPattern('widgetPreview');
            $code = '
            <?php
            if ($2 instanceof \App\Models\Widget) {
                $handler = $2->widget_type_handler;
                $presenter = call_user_func([$handler, "getPresenter"]);

                echo call_user_func([$presenter, "render"], json_decode($2->settings));
            }
            ?>
        ';

            return preg_replace($pattern, $code, $view);
        });
    }

    /**
     * Creates pattern for matching Blade directives
     *
     * @param $function
     *
     * @return string
     */
    private function createPattern($function)
    {
        return '/(?<!\w)(\s*)@' . $function . '\(\s*(.*)\)/';
    }

    /**
     * Register the application services.
     *
     * @return void
     */
    public function register()
    {
        //
    }
}