<?php

/**

 * Playlist displayer

 *

 * Greyhound - real web management for Amarok

 * Copyright (C) 2008 Dan Fuhry

 *

 * This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied

 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.

 */

function amarok_playlist($httpd, $socket)

{

  global $theme, $playlist, $allowcontrol;

  global $use_auth, $auth_data;

  if ( $use_auth )

  {

    if ( !isset($_SERVER['PHP_AUTH_USER']) )

    {

      $httpd->header('WWW-Authenticate: basic');

      $httpd->send_http_error($socket, 401, "A username and password are required to access this resource. Either you did not specify a username and password, or the supplied credentials were incorrect.");

      return true;

    }

    if ( !isset($auth_data[$_SERVER['PHP_AUTH_USER']]) )

    {

      $httpd->header('WWW-Authenticate: basic');

      $httpd->send_http_error($socket, 401, "A username and password are required to access this resource. Either you did not specify a username and password, or the supplied credentials were incorrect.");

      return true;

    }

    else if ( $auth_data[$_SERVER['PHP_AUTH_USER']] !== $_SERVER['PHP_AUTH_PW'] )

    {

      $httpd->header('WWW-Authenticate: basic');

      $httpd->send_http_error($socket, 401, "A username and password are required to access this resource. Either you did not specify a username and password, or the supplied credentials were incorrect.");

      return true;

    }

  }

  $iphone = ( ( strpos($_SERVER['HTTP_USER_AGENT'], 'iPhone') ||

       strpos($_SERVER['HTTP_USER_AGENT'], 'iPod') ||

       strpos($_SERVER['HTTP_USER_AGENT'], 'BlackBerry') ||

       isset($_GET['m']) )

       && !isset($_GET['f'])

       );

  $theme_id = ( $iphone ) ? 'iphone' : $theme;

  $smarty = load_theme($theme_id);

  $active = dcop_action('playlist', 'getActiveIndex');

  $smarty->assign('theme', $theme_id);

  $smarty->assign('playlist', $playlist);

  $smarty->assign('active', $active);

  $smarty->assign('scripts', array(

      'ajax.js',

      'domutils.js',

      'volume.js',

      'dom-drag.js',

      'position.js'

    ));

  $smarty->assign('allow_control', $allowcontrol);

  $smarty->display('playlist.tpl');

}

function artwork_request_handler($httpd, $socket)

{

  global $homedir;

  if ( !isset($_GET['artist']) || !isset($_GET['album']) )

  {

    echo 'Please specify artist and album.';

    return;

  }

  // get hash

  $artwork_hash = md5( strtolower(trim($_GET['artist'])) . strtolower(trim($_GET['album'])) );

  $artwork_dir = "$homedir/.kde/share/apps/amarok/albumcovers";

  if ( file_exists("$artwork_dir/large/$artwork_hash") )

  {

    // artwork file found - scale and convert to PNG

    if ( !is_dir("$artwork_dir/greyhoundthumbnails") )

    {

      if ( !@mkdir("$artwork_dir/greyhoundthumbnails") )

      {

        return false;

      }

    }

    // check for the scaled cover image

    $target_file = "$artwork_dir/greyhoundthumbnails/$artwork_hash.png";

    if ( !file_exists($target_file) )

    {

      // not scaled yet, scale to uniform 50x50 image

      $artwork_filetype = get_image_filetype("$artwork_dir/large/$artwork_hash");

      if ( !$artwork_filetype )

      {

        return false;

      }

      // we'll need to copy the existing artwork file to our thumbnail dir to let scale_image() detect the type properly (it doesn't use magic bytes)

      if ( !copy("$artwork_dir/large/$artwork_hash", "$artwork_dir/greyhoundthumbnails/tmp{$artwork_hash}.$artwork_filetype") )

      {

        return false;

      }

      // finally, scale the image

      if ( !scale_image("$artwork_dir/greyhoundthumbnails/tmp{$artwork_hash}.$artwork_filetype", $target_file, 50, 50) )

      {

        return false;

      }

      // delete our temp file

      if ( !unlink("$artwork_dir/greyhoundthumbnails/tmp{$artwork_hash}.$artwork_filetype") )

      {

        echo 'Couldn\'t delete the temp file';

        return false;

      }

    }

    // we have it now, send the image through

    $fh = @fopen($target_file, 'r');

    if ( !$fh )

      return false;

    $httpd->header('Content-type: image/png');

    $httpd->header('Content-length: ' . filesize($target_file));

    $httpd->header('Expires: Wed, 1 Jan 2020 01:00:00 GMT');

    while ( !feof($fh) )

    {

      socket_write($socket, fread($fh, 51200));

    }

    fclose($fh);

  }

  else

  {

    // artwork file doesn't exist

    $ar = htmlspecialchars($_GET['artist']);

    $al = htmlspecialchars($_GET['album']);

    $httpd->send_http_error($socket, 404, "The requested artwork file for $ar:$al could not be found on this server.");

  }

}