davide-casiraghi/ci-global-calendar

<?php

/*
    This plugin shows in a specified number of cards from the articles from a specic category.
    Example of strings that evoke the plugin:
    {# cardsCarousel category_id=[6] posts_shown=[3] posts_max_number=[6] show_images=[1] round_images=[1] show_category_title=[1] limit_chars=[100] #}
*/

namespace App\Classes;

use App\Category;
use App\Post;
use Illuminate\Support\Str;

class CardsCarouselClass
{
    /**
     *  Returns the plugin parameters.
     *
     * @param  array  $matches  result from the regular expression on the string from the article
     * @return array $ret          the array containing the parameters
     **/
    public function getParameters($matches)
    {
        $ret = [];

        // Get activation string parameters (from article)
        $ret['token'] = $matches[0];

        $ret['cat_id'] = $matches[2];
        $ret['posts_shown'] = $matches[4];
        $ret['posts_max_number'] = $matches[6];
        $ret['show_images'] = $matches[8];
        $ret['round_images'] = $matches[10];
        $ret['show_category_title'] = $matches[12];
        $ret['limit_chars'] = $matches[14];

        return $ret;
    }

    // **********************************************************************

    /**
     *  Turn array of the metches after preg_match_all function (taken from - https://secure.php.net/manual/en/function.preg-match-all.php).
     *
     * @param  array  $file_name  the file name
     * @return array $ret             the extension
     **/
    public function turn_array($m)
    {
        for ($z = 0; $z < count($m); $z++) {
            for ($x = 0; $x < count($m[$z]); $x++) {
                $ret[$x][$z] = $m[$z][$x];
            }
        }

        return $ret;
    }

    /***************************************************************************/

    /**
     *  Prepare the columns HTML.
     *
     * @param  array  $parameters  parameters array [post_id, img_alignment, img_col_size_class, text_col_size_class]
     * @param  array  $columnsData  the posts array
     * @return string $ret             the HTML to print on screen
     **/
    public function prepareColumns($parameters, $postsData, $categoryData)
    {
        $ret = "<div class='container columns pt-5'>";
        if ($parameters['show_category_title']) {
            $ret .= "<h2 class='column-title mb-4' style='text-align: center;'>".$categoryData->name.'</h3>';
        }

        $ret .= "<div class='row card-carousel-wrapper'>";
        //dump($postsData);
        for ($i = 1; $i <= $parameters['posts_max_number']; $i++) {
            $ret .= "<div class='col'>";
            if ($parameters['show_images']) {
                $ret .= "<img class='rounded-circle mb-4' style='width:100%;' src='".$postsData[$i]->introimage."' alt='".$postData->introimage_alt."'>";
            }

            $ret .= "<h3 class='mb-4'>".$postsData[$i]->title.'</h3>';
            $ret .= '<div>'.Str::limit(strip_tags($postsData[$i]->body, '<br><p><b>'), $parameters['limit_chars']).'</div>';
            $ret .= "<p><a class='btn btn-secondary' href='/post/".$postsData[$i]->slug."' role='button'>View details »</a></p>";
            $ret .= '</div>';
        }
        $ret .= '</div>';
        $ret .= '</div>';

        return $ret;
    }

    /***************************************************************************/

    /**
     *  Substitute the activation string with the HTML.
     *
     * @param  array  $postBody  the post html
     * @return string $ret             the HTML to print on screen
     **/
    public function getColumns($postBody)
    {
        // Find plugin occurrences
        $ptn = '/{# +cardsCarousel +(category_id|posts_shown|posts_max_number|show_images|round_images|show_category_title|limit_chars)=\[(.*)\] +(category_id|posts_shown|posts_max_number|show_images|round_images|show_category_title|limit_chars)=\[(.*)\] +(category_id|posts_shown|posts_max_number|show_images|round_images|show_category_title|limit_chars)=\[(.*)\] +(category_id|posts_shown|posts_max_number|show_images|round_images|show_category_title|limit_chars)=\[(.*)\] +(category_id|posts_shown|posts_max_number|show_images|round_images|show_category_title|limit_chars)=\[(.*)\] +(category_id|posts_shown|posts_max_number|show_images|round_images|show_category_title|limit_chars)=\[(.*)\] +(category_id|posts_shown|posts_max_number|show_images|round_images|show_category_title|limit_chars)=\[(.*)\] +#}/';

        if (preg_match_all($ptn, $postBody, $matches)) {
            // Trasform the matches array in a way that can be used
            $matches = $this->turn_array($matches);

            foreach ($matches as $key => $single_category_column_matches) {
                // Get plugin parameters array
                $parameters = $this->getParameters($single_category_column_matches);

                // Get the post and category data
                $postsData = Post::postsByCategory($parameters['cat_id']);
                $categoryData = Category::categorydata($parameters['cat_id']);

                //dump($postsData);

                // Prepare Columns HTML
                $columnsHtml = $this->prepareColumns($parameters, $postsData, $categoryData);

                //$columnsHtml= "this is the gallery!!";

                // RENDER
                $postBody = str_replace($parameters['token'], $columnsHtml, $postBody);
            }
        }

        return $postBody;
    }
}