<?php

namespace Webfan\App\Frdlweb;

use League\CommonMark\CommonMarkConverter;
use League\CommonMark\ConverterInterface;
use Spyc;

class CMS
{
    protected $allowPhp = false;
    protected $options;
    protected $converter;

    public function __construct(array $options = null, $allowPhp = false, ConverterInterface $converter = null)
    {
        $this->allowPhp=$allowPhp;
        $this->options = $this->getDefaultOptions($options);
        $this->converter =(null !== $converter)
                     ? $converter
                     : new CommonMarkConverter( $this->options['parser'] );
    }

    public function __invoke($type, $slug, $content_variable = '')
    {
        $includePhp = false;
          $filename_without_extension = trim( $this->options['content-dir'], '//\\') . '/' . $type . '/' . $slug;
          if (is_file($filename_without_extension . '.md')) {
        $filename = $filename_without_extension . '.md';
          }
          else if (is_file($filename_without_extension . \DIRECTORY_SEPARATOR.'index.md')) {
         $filename = $filename_without_extension . \DIRECTORY_SEPARATOR.'index.md';
          }
          else if (is_file($filename_without_extension . '.html')) {
        $filename = $filename_without_extension . '.html';
          }
          else if (is_file($filename_without_extension . '.htm')) {
        $filename = $filename_without_extension . '.htm';
          }
          else if (true===$this->allowPhp && is_file($filename_without_extension . '.php')) {
        $filename = $filename_without_extension . '.php';
        $includePhp = true;
          }
          else {
        //echo 'not found: ' . $filename_without_extension . '<br><br>';
        return false;
          }

          if(true===$this->allowPhp && true === $includePhp){
                ob_start();
         require $filename;
        $content = ob_get_clean();
          }else{
          $content = file_get_contents($filename);
          }


          $this->parseFrontmatter($content);

          $content = $this->mustache_substitute($content, $content_variable);

          if ($type != 'themes') {
          $content = $this->converter->convert($content);

        // Wrap it in template, if there is one
        //global $theme;
        $wrapped_content = $this('themes', $this->options['frontmatter']['theme'] . '/' . $type . '-' . $slug, $content);
        if ($wrapped_content !== FALSE) {
          $content = $wrapped_content;
        }
        else {
          $wrapped_content = $this('themes', $this->options['frontmatter']['theme'] . '/' . $type, $content);
          if ($wrapped_content !== FALSE) {
        $content = $wrapped_content;
          }
        }
          }

          return $content;
    }

    protected function mustache_substitute($text, $content_variable)
    {
        $self = &$this;
          return preg_replace_callback('/{{((?:[^}]|}[^}])+)}}/', function($matches) use ($content_variable, &$self) {
        $tag = trim($matches[1]);

        switch ($tag) {
          /*
          case 'title':
        // If first line in md-file is a heading, use that as the title
        preg_match('/#\s*(.*)/', $page_md, $matches);
        if (count($matches) == 2) {
          return $matches[1];
        }
        return 'default title';*/
          case 'main':
          case 'content':
        return $content_variable;
        //        return $Parsedown->text($c);

          case 'theme-name':
        return $self->options['frontmatter']['theme'];

          case 'root-url':
           // return 'https://'.$_SERVER['HTTP_HOST'].$self->options['content-dir'];
            return $self->options['content-dir'];
          case 'theme-url':
        //return 'https://'.$_SERVER['HTTP_HOST'].$self->options['themes-dir'] .$self->options['frontmatter']['theme'];
            return $self->options['themes-dir'] .$self->options['frontmatter']['theme'];
        }
        if (isset( $self->options['frontmatter'][$tag])) {
          return  $self->options['frontmatter'][$tag];
        }

        /*
        global $shortcodes_path;
        if (is_file($shortcodes_path . '/' . $tag . '.php')) {
          ob_start();
          include $shortcodes_path . '/' . $tag . '.php';
          return ob_get_clean();
        }*/

        $block_html = $self('blocks', $tag, $content_variable);
        if ($block_html !== false) {
          return $block_html;
        }

        return '';
        //    return 'unknown tag: "' . $tag . '"';
          }, $text);
    }

    protected function parseFrontmatter(&$text_md)
    {
        //    $text_md = str_replace('+++', '---', $text_md);

          if (strncmp($text_md, "+++", 3) === 0) {
        // TOML format, but only partly supported
        $endpos = strpos($text_md, '+++', 3);
        $frontmatter = trim(substr($text_md, 3, $endpos - 3));
        $text_md = substr($text_md, $endpos + 3);

        $lines = preg_split("/\\r\\n|\\r|\\n/", $frontmatter);

        $group_prefix = '';
        foreach ($lines as $line) {
          // Grouping
          if (preg_match('/\[(.*)\]/', $line, $matches)) {
        $group_prefix = $matches[1] . '.';
          }
          // String assignments
          if (preg_match('/([\w-]+)\\s*=\\s*([\'"])(.*)\\2/', $line, $matches)) {
         $this->options['frontmatter'][$group_prefix . $matches[1]] = $matches[3];
          }
        }
          }
          if (strncmp($text_md, "---", 3) === 0) {
        $endpos = strpos($text_md, '---', 3);
        $frontmatter = trim(substr($text_md, 3, $endpos - 3));
        $text_md = substr($text_md, $endpos + 3);

        $array = Spyc::YAMLLoadString($frontmatter);

        foreach ($array as $index => $item) {
           $this->options['frontmatter'][$index] = $item;
        }
          }
    }

    protected function getDefaultOptions(array $options = null)
    {
        if(null===$options){
          $options = [];
        }

        if(!isset($options['dir'])){
            $options['dir'] = getcwd();
        }
        if(!isset($options['configfile'])){
            $options['configfile'] = '_config.yaml';
        }
        if(!isset($options['content-dir'])){
            $options['content-dir'] = is_dir($options['dir'] . \DIRECTORY_SEPARATOR.'content')
                          ? \DIRECTORY_SEPARATOR.'content'.\DIRECTORY_SEPARATOR
                          : \DIRECTORY_SEPARATOR;
        }
        if(!isset($options['themes-dir'])){
            $options['themes-dir'] =$options['content-dir'].\DIRECTORY_SEPARATOR.'themes'.\DIRECTORY_SEPARATOR;
        }

        $frontmatter = file_exists($options['dir'] . \DIRECTORY_SEPARATOR.$options['configfile'])
                    ? Spyc::YAMLLoad($options['dir'] . \DIRECTORY_SEPARATOR.$options['configfile'])
                    : [
                        'theme' =>'basic-with-responsive-menu'
                    ];

        $o = [
            'parser' => [
                'html_input' => 'strip',
                'allow_unsafe_links' => false,
            ],

            'frontmatter' => array_merge([
                        'theme' =>'basic-with-responsive-menu'
                    ], $frontmatter),
        ];
        $res = array_merge($o, $options);
        $res['frontmatter']['theme'] = str_replace('//\\', '__INVLID__', $res['frontmatter']['theme'] );
        //$res['content-dir'] = str_replace('.', '__INVLID__', $res['content-dir']);
        return $res;
    }
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NzI0NTM1OTA4NDU1NjMyNSAyNzE5OTgyNzgyNTQ3NTQyIDI4NzI0MjU1MjMwOTc3OTU=