<?php

  ini_set('display_errors', 1);
  ini_set('display_startup_errors', 1);
  error_reporting(E_ALL);


  {

    $pagesFolder = $_SERVER["DOCUMENT_ROOT"] . '/../pages/';

    class Page {
      public $title;
      public $slug;
      public $author;
      public $cDate;
      public $mDate;
      public $content;

      function __construct($pageSlug = '') {
        if (existPage($pageSlug)) {
          $pageJSON = json_decode(file_get_contents(getPageJSONPath($pageSlug)));
          foreach ($pageJSON as $key => $value) {
            $this->$key = $value;
          }
          $this->slug = $pageSlug;
        }
      }

      function write() {
        $filePath = getPageJSONPath($this->slug);

        // Remove attributes that should be serialized
        $slug = $this->slug;
        unset($this->slug);

        $file = fopen($filePath, 'w');
        fwrite($file, json_encode($this));
        fclose($file);

        // Add them back
        $this->slug = $slug;
      }

      function delete() {
        $filePath = getPageJSONPath($this->slug);
        if (file_exists($filePath)) {
          unlink($filePath);
        }
      }

      function rename($newSlug) {
        rename(getPageJSONPath($this->slug), getPageJSONPath($newSlug));
        $this->slug = $newSlug;
      }

      function parse() {
        require_once($_SERVER["DOCUMENT_ROOT"] . "/../Parsedown.php");
        $parsedown = new Parsedown();
        $parsedown->setSafeMode(true);
        return $parsedown->text($this->content);
      }
    }

    function getListSlugPages() {
      global $pagesFolder;
      $pages = scandir($pagesFolder);
      $pages = array_slice($pages, 2);
      $result = array();
      foreach ($pages as $page) {
        if (substr($page, -5, 5) == '.json') {
          array_push($result, substr($page, 0, -5));
        }
      }
      return $result;
    }

    function existPage($pageSlug) {
      return file_exists(getPageJSONPath($pageSlug));
    }

    function getPageJSONPath($pageSlug) {
      global $pagesFolder;
      return $pagesFolder . $pageSlug . '.json';
    }

    function unixToDate($unixTime) {
      return date('Y-m-d', $unixTime);
    }

    function sluggify($string) {
      $string = strtolower($string);
      $string = str_replace(' ', '-', $string);

      $string = str_split($string);
      $result = "";
      $slugAcceptable = "abcdefghijklmnopqrstuvwxyz0123456789-";
      foreach ($string as $c) {
        if (stripos($slugAcceptable, $c) !== false) $result .= $c;
      }
      $result = trim($result, "-");
      return $result;
    }



  }




 ?>