<?php

  # -----------------------------------------------------------------------------------
  #                                                                   fonction generale
  #

  function e_backend($env)
  { if($_GET[$env->param("action")])
    { $function = "a_".$_GET[$env->param("action")];
      if(function_exists($function))
      { $function($env);
      }
    }
  }

  # -----------------------------------------------------------------------------------
  #                                                                             actions
  #

  # ----------------------------------------
  # playlists audio generales

  function a_last_downloads($env)
  { if(($downloads = $env->data->pl_last_downloads(10)) !== false)
    { if($_GET[$env->param("format")] == "m3u")
      { echo get_m3u($downloads);
        exit;
      }
      elseif($_GET[$env->param("format")] == "atom")
      { $env->out["atom"] = get_downloads_atom
        ( "last_downloads",
          $env->config("site_name"),
          "les 10 derniers morceaux",
          "http://".$_SERVER["HTTP_HOST"].$env->url(array("e" => "last_downloads", "format" => "atom"), "backend.php"),
          "http://".$_SERVER["HTTP_HOST"].$env->url(array("e" => "playlist", "action" => "last_downloads"), "index.php"),
          $downloads
        );
      }
    }
    else echo "Erreur lors de l'acc&egrave;s aux downloads";
  }

  function a_rand_downloads($env)
  { header('Content-type: application/atom+xml; charset=UTF-8');
    if(($downloads = $env->data->pl_rand_downloads(10)) !== false)
    { if($_GET[$env->param("format")] == "m3u")
      { echo get_m3u($downloads);
        exit;
      }
      elseif($_GET[$env->param("format")] == "atom")
      { $env->out["atom"] = get_downloads_atom
        ( "rand_downloads",
          $env->config("site_name"),
          "10 morceaux au hasard",
          "http://".$_SERVER["HTTP_HOST"].$env->url(array("e" => "rand_downloads", "format" => "atom"), "backend.php"),
          "http://".$_SERVER["HTTP_HOST"].$env->url(array("e" => "playlist", "action" => "rand_downloads"), "index.php"),
          $downloads
        );
      }
    }
    else echo "Erreur lors de l'acc&egrave;s aux downloads";
  }

  # ----------------------------------------
  # playlists artistes

  function a_artiste_downloads($env)
  { if($_GET[$env->param("format")] == "m3u")
    { if
      ( ( $downloads = $env->data->pl_artiste_downloads
          ( $_GET[$env->param("artiste")],
            isset($_GET[$env->param("album")]) ? $_GET[$env->param("album")] : null
          )
        ) !== false
      )
      { echo get_m3u($downloads);
        exit;
      }
      else echo "Erreur lors de l'acc&egrave;s aux downloads";
    }
  }

  function a_artiste_mp3($env)
  { if($_GET[$env->param("format")] == "playlist_xml")
    { if
      ( ( $env->out["downloads"] = $env->data->artiste_downloads
          ( $_GET[$env->param("artiste")],
            true,
            $_GET[$env->param("album")] ? $_GET[$env->param("album")] : null
          )
        ) !== false
      )
      { header("Content-Type: application/xml");
      }
      else echo "Erreur lors de l'acc&egrave;s aux downloads";
    }
  }

  # ----------------------------------------
  # news generales

  function a_last_news($env)
  { if(($news = $env->data->contenus(array("root", "news"), 0, 10, " AND public=1 AND date_publication <= NOW()")) !== false)
    { $news = $news["list"];
      foreach($news as $id_news => $_news) $news[$id_news]["url"] =
      "http://".$_SERVER["HTTP_HOST"].$env->url(array("e" => "content", "id" => $id_news), "index.php");
      if($_GET[$env->param("format")] == "atom")
      { $env->out["atom"] = get_content_atom
        ( "last_news",
          $env->config("site_name"),
          "les 10 dernieres news",
          "http://".$_SERVER["HTTP_HOST"].$env->url(array("e" => "last_news", "format" => "atom"), "backend.php"),
          "http://".$_SERVER["HTTP_HOST"].$env->url(array("e" => "accueil"), "index.php"),
          $news
        );
      }
    }
    else echo "Erreur lors de l'acc&egrave;s aux downloads";
  }

  # ----------------------------------------
  # news artistes

  function a_last_artiste_news($env)
  { if(($news = $env->data->contenus(array("root", "artistes", "news", $_GET[$env->param("artiste")]), 0, 10, " AND public=1 AND date_publication <= NOW()")) !== false)
    { $news = $news["list"];
      foreach($news as $id_news => $_news) $news[$id_news]["url"] =
      "http://".$_SERVER["HTTP_HOST"].$env->url(array("e" => "content", "id" => $id_news), "index.php");
      if($_GET[$env->param("format")] == "atom")
      { $env->out["atom"] = get_content_atom
        ( "last_news",
          $env->config("site_name"),
          "les 10 dernieres news",
          "http://".$_SERVER["HTTP_HOST"].$env->url(array("e" => "last_news", "format" => "atom"), "backend.php"),
          "http://".$_SERVER["HTTP_HOST"].$env->url(array("e" => "accueil"), "index.php"),
          $news
        );
      }
    }
    else echo "Erreur lors de l'acc&egrave;s aux downloads";
  }

  # -----------------------------------------------------------------------------------
  #                                                                               utils
  #

  function get_m3u($downloads, $debug = false)
  { $playlist =
     "#EXTM3U\n";
    if($downloads) foreach($downloads as $id => $download)
    { $playlist .=
       "#EXTINF:-1,".$download["titre"]."\n"
      .$download["url"]."\n";
    }
    if(!$debug)
    { header("Content-type: audio/x-mpegurl");
      header('Content-Disposition: inline; filename=playlist.m3u');
      header("Content-Length: ".strlen($playlist));
    }
    return $playlist;
  }

  function get_downloads_atom($id, $author, $title, $self, $alternate, $downloads)
  { $atom = array
    ( "id" => "tag:".$_SERVER["HTTP_HOST"].",".date("Y-m-d").":".$id,
      "author_name" => $author,
      "title" => $title,
      "updated" => date("Y-m-d")."T".date("H:i:s")."Z",
      "link" => array("self" => str_replace("&", "&amp;", $self), "alternate" => str_replace("&", "&amp;", $alternate)),
      "entries" => array()
    );
    foreach($downloads as $id_download => $download)
    { $atom["entries"][$id_download] = array
      (  "id" => "tag:".$_SERVER["HTTP_HOST"].","
        .$download["year_updated"]."-".$download["month_updated"]."-".$download["day_updated"]
        .":download/".$id_download,
        "title" => $download["auteur"]." - ".$download["titre"],
        "updated" => $download["year_updated"]."-".$download["month_updated"]."-".$download["day_updated"]."T00:00:00Z",
        "author_name" => $download["auteur"],
        "enclosure" => str_replace("&", "&amp;", $download["url"]),
        "content_type" => $download["content_type"],
        "link" => array("alternate" => str_replace("&", "&amp;", $download["url"]))
      );
    }
    return $atom;
  }

  function get_content_atom($id, $author, $title, $self, $alternate, $contents)
  { $atom = array
    ( "id" => "tag:".$_SERVER["HTTP_HOST"].",".date("Y-m-d").":".$id,
      "author_name" => $author,
      "title" => $title,
      "updated" => date("Y-m-d")."T".date("H:i:s")."Z",
      "link" => array("self" => str_replace("&", "&amp;", $self), "alternate" => str_replace("&", "&amp;", $alternate)),
      "entries" => array()
    );
    foreach($contents as $id_content => $content)
    { $atom["entries"][$id_content] = array
      (  "id" => "tag:".$_SERVER["HTTP_HOST"].","
        .$download["year_updated"]."-".$download["month_updated"]."-".$download["day_updated"]
        .":content/".$id_content,
        "title" => $content["titre"],
        "updated" => $content["date_modification"]."T00:00:00Z",
        "author_name" => $content["auteur"],
        "summary" => str_replace("&", "&amp;", $content["contenu"]),
        "link" => array("alternate" => str_replace("&", "&amp;", $content["url"]))
      );
    }
    return $atom;
  }

?>