ktk_mediaserve/modules/FileBrowser.php

<?php
namespace ktk\MusicServe;

class FileBrowser {
  const ROOT = "media/";

  const T_DIR = 1;
  const T_FILE = 2;

  const F_TYPE = 0;
  const F_NAME = 1;
  const F_EXT = 2;

  static function onInit() {
    // set default options if need be
    if (!MusicServe::getData('sort_by')) {
      MusicServe::storeData('sort_order', SORT_ASC);
      MusicServe::storeData('sort_by', "name");
    }
    if (!MusicServe::getData('cwd')) {
      MusicServe::storeData('cwd', FileBrowser::ROOT);
      self::getFiles();
      self::sortFiles();
    }
  }

  static function onRender() {
    $cwd = MusicServe::getData('cwd');
    echo '    <div id="ktk_MusicServe_FileBrowser">'.PHP_EOL;
    echo '      <h1>',$cwd,'</h1>'.PHP_EOL;
    if (MusicServe::checkModule("Playlist")) {
      echo '      <form action="" method="POST">';
      echo '      <input type="hidden" name="m" value="FileBrowser" />';
      echo '      <input type="hidden" name="c" value="openFiles" />';
      echo '      <input type="submit" name="" value="add all to playlist" />';
      echo '      </form>';
    }
    echo '      <table>'.PHP_EOL;
    echo '      <form action="" method="POST">';
    echo '      <input type="hidden" name="m" value="FileBrowser" />';
    echo '      <input type="hidden" name="c" value="changeSort" />';
    echo '        <tr><th><input type="submit" name="p1" value="name" /></th><th><input type="submit" name="p1" value="ext" /></th></tr>'.PHP_EOL;
    echo '      </form>'.PHP_EOL;
    echo '      <form action="" method="POST">';
    echo '      <input type="hidden" name="m" value="FileBrowser" />';
    echo '      <input type="hidden" name="c" value="changeCwd" />';
    echo '        <tr><td><input type="submit" name="p1" value="../"></td><td></td></tr>'.PHP_EOL;
    foreach(MusicServe::getData('dirs') as $dir) {
      echo '        <tr><td><input type="submit" name="p1" value="'.$dir[FileBrowser::F_NAME].'/"></td><td></td></tr>'.PHP_EOL;
    }
    echo '      </form>'.PHP_EOL;

    echo '      <form action="" method="POST">';
    echo '      <input type="hidden" name="m" value="FileBrowser" />';
    echo '      <input type="hidden" name="c" value="openFile" />';
    foreach(MusicServe::getData('files') as $file) {
      echo '        <tr><td><input type="submit" name="p1" value="'.$file[FileBrowser::F_NAME].'"/></td><td>'.$file[FileBrowser::F_EXT].'</td></tr>'.PHP_EOL;
    }
    echo '      </form>'.PHP_EOL;
    echo '      </table>'.PHP_EOL;
    echo '    </div>'.PHP_EOL;
  }

  /* COMMAND FUNCTIONS */
  static function changeCwd($directory) {
    // NOTE: temporarily resolving any ".." to one dir up, rather than all
    if (substr_count($directory, "..")) {
      if (MusicServe::getData('cwd') == FileBrowser::ROOT) {
        return NULL;
      }
      $directory = dirname(MusicServe::getData('cwd')).'/';
    } else {
      $directory = MusicServe::getData('cwd').$directory;
    }
    if (!file_exists($directory)) {
      MusicServe::reportError(__CLASS__, __FUNCTION__,
        "Cannot change working directory to \"'.$directory.'\", as it does not exist!\n"
      );
      return NULL;
    }
    MusicServe::storeData('cwd', $directory);
    self::getFiles();
    self::sortFiles();
  }

  static function changeSort($type) {
    MusicServe::storeData('sort_by', $type);
    if (($sort_order = MusicServe::getData('sort_order')) != SORT_ASC) {
      MusicServe::storeData('sort_order', SORT_ASC);
    } else {
      MusicServe::storeData('sort_order', SORT_DESC);
    }
    self::sortFiles();
  }

  static function openFile($file) {
    if (MusicServe::checkModule("Playlist")) {
      Playlist::addFile(MusicServe::getData('cwd').$file);
    }
  }

  static function openFiles() {
    if (MusicServe::checkModule("Playlist")) {
      foreach(MusicServe::getData('files') as $file) {
        Playlist::addFile(MusicServe::getData('cwd').$file[FileBrowser::F_NAME]);
      }
    }
  }

  /* GENERAL FUNCTIONS */
  static function getFiles() {
    $directory = MusicServe::getData('cwd');
    if (!file_exists($directory)) {
      MusicServe::reportError(__CLASS__, __FUNCTION__,
        "Directory \"'.$directory.'\"does not exist!\n"
      );
      return NULL;
    }

    $directory_handle = opendir($directory);
    $i = 0;
    while (false !== ($filename = readdir($directory_handle))) {
      if ($filename[0] != '.' && $filename != "..") {
        $files[$i] = array();
        if (is_dir($directory.$filename)) {
          $files[$i][FileBrowser::F_TYPE] = FileBrowser::T_DIR;
        } else {
          $files[$i][FileBrowser::F_TYPE] = FileBrowser::T_FILE;
        }
        $files[$i][FileBrowser::F_NAME] = $filename;
        $files[$i][FileBrowser::F_EXT] = pathinfo($filename, PATHINFO_EXTENSION);
        $i++;
      }
    }
    MusicServe::storeData('dir_list', $files);
  }

  /* INTERNAL FUNCTIONS */
  static function sortFiles() {
    $sort = array();
    $sort_by = MusicServe::getData('sort_by');
    $sort_order = MusicServe::getData('sort_order');
    $i = 0;
    if ($sort_by == "ext") {
      foreach (MusicServe::getData('dir_list') as $file) {
        $sort[$i++] = $file[FileBrowser::F_EXT];
      }
    } else {
      foreach (MusicServe::getData('dir_list') as $file) {
        $sort[$i++] = $file[FileBrowser::F_NAME];
      }
    }
    array_multisort($sort, $sort_order, MusicServe::getData('dir_list'));
   // Wasteful, but we want directories always on top
    $dirs = array();
    $files = array();
    foreach (MusicServe::getData('dir_list') as $file) {
      if ($file[FileBrowser::F_TYPE] == FileBrowser::T_DIR) {
        $dirs[] = $file;
      } else {
        $files[] = $file;
      }
    }
    MusicServe::storeData('files', $files);
    MusicServe::storeData('dirs', $dirs);
  }
}
?>