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get_flash_videos  view on Meta::CPAN

  # SCRIPT_NAME is some magic set by combine-perl or via MakeMaker
  if($::SCRIPT_NAME) {
    my $browser = FlashVideo::Mechanize->new;

    $browser->get("http://get-flash-videos.googlecode.com/svn/wiki/Version.wiki");

    if(!$browser->response->is_success) {
      die "Unable to retrieve version data: " . $browser->response->status_line . "\n";
    }

    my $version = ($browser->content =~ /version: (\S+)/)[0];
    my $base = ($browser->content =~ /from: (\S+)/)[0];
    my $info = ($browser->content =~ /info: (\S+)/)[0];
    my $url = $base . $::SCRIPT_NAME . "-" . $version;

    die "Unable to parse version data" unless $version and $base;

    # Split version on . and compare... (can't yet use version, that is only
    # core since 5.10).
    my @v = split /\./, $version;
    my @V = split /\./, $VERSION;

    my $newer = 0;
    my $i = 0;
    for(@v) {
      $newer = 1 if !defined $V[$i] || $_ > $V[$i];
      last if $V[$i] > $v[$i];
      $i++;
    }

    if($newer) {
      info "Newer version ($version) available";
      debug "(Install type: $::INSTALL_TYPE)";

      if($::INSTALL_TYPE =~ /^cpan-/) {

        my $update_method = $update_types{$::INSTALL_TYPE};
        if($update_method->[0]) {
          info "This was installed via CPAN, you may upgrade by running:";
          info $update_method->[1];

          my $run_cpan = $opt{yes} || do {
            info "Shall I run that for you? (Y/n)";
            <STDIN> =~ /(?:^\s*$|y)/i;
          };

          if($run_cpan) {
            system $update_method->[1];
          }
        } else {
          info "Please visit http://code.google.com/p/get-flash-videos to upgrade";
        }
      } else {
        update_script($browser, $url, $info);
      }
    } else {
      print STDERR "You already have the latest version.\n";
    }
  } else {
    info "Development version, not updated";
  }

  update_plugins();

  return 0; # exit code
}

sub update_script {
  my($browser, $url, $info) = @_;

  info "Downloading new version...";
  die "Cannot update -- unable to write to $0\n" unless -w $0;

  my $new_file = $0 . ".new";
  $browser->mirror($url, $new_file);

  if($browser->response->is_success && -f $new_file) {
    rename $0, "$0.old" or die "Unable to rename $0 to $0.old: $!";
    rename $new_file, $0 or die "Unable to rename $new_file to $0: $!";
    chmod 0755, $0;

    info "New version installed as $0";
    info "(previous version backed up to $0.old).";
    info $info;
  } else {
    die "Download failed: " . $browser->response->status_line;
  }
}

sub update_plugins {
  my $browser = FlashVideo::Mechanize->new;

  foreach my $plugin(get_installed_plugins()) {
    debug "Seeing if there is an update for $plugin..";

    my $file = get_plugin_dir() . "/$plugin";
    require $file;

    my $package = "FlashVideo::Site::" . ($plugin =~ /(.*)\.pm$/)[0];

    if($package->can("update")) {
      # Allow plugin to override generic updater
      $package->update();
    } else {
      no strict 'refs';

      my $downloaded  = 0;
      my $newer_found = 0;

      foreach my $update_url (@{ "$package\::update_urls" }) {
        $browser->head($update_url);

        if (!$browser->response->is_success) {
          # This shouldn't be fatal
          debug "Couldn't retrieve $update_url for $plugin: " . $browser->response->status_line;
          next;
        }

        # Compare the last modified time of the plugin to the time of the file on disk
        my $file_mtime = stat($file)->mtime;

        my $remote_plugin_mtime = $browser->response->last_modified;

        if ($remote_plugin_mtime > $file_mtime) {
          info "Newer version of plugin $plugin found at $update_url, trying to download and install";
          $newer_found = 1;

          if ($downloaded = install_plugin($browser, $update_url, $file)) {
            last;
          }
        }
        else {
          debug "Plugin $plugin is already the lastest version.";
          debug "(Remote: " . $browser->response->header("Last-Modified")
            . "; Local: " . gmtime($file_mtime) . " GMT)";
        }
      }

      if ($newer_found and !$downloaded) {
        die "Couldn't install $plugin plugin";
      }
    }
  }
}

# Upgrade a plugin or install a new one.
sub install_plugin {
  my ($browser, $url, $file) = @_;

  # So we can track newly installed plugins as well as updated ones
  my $plugin_exists = -f $file;

  my $new_file = $plugin_exists ? "$file.new" : $file;

  $browser->mirror($url, $new_file);

  if ($browser->response->is_success && -f $new_file) {
    my $short_name = basename($file);

    if ($plugin_exists) {
      rename $file, "$file.old" or die "Unable to rename $file to $file.old: $!";
      rename $new_file, $file   or die "Unable to rename $new_file to $file: $!";

      info "New version of $short_name installed as $file";
      info "(previous version backed up to $file.old).";
    }
    else {
      info "New plugin $short_name installed as $file";
    }

    return 1;
  }
  else {
    warn "Download failed: " . $browser->response->status_line;
  }

  return 0;
}

# Coderef to this in @INC means Perl will call it for every module that it
# tries to load, including our internal FlashVideo::Site:: modules. Use
# this to load plugins off disk to support seperately distributed plugins.
sub plugin_loader {
  my (undef, $module) = @_;

  if ($module =~ m'^FlashVideo/Site/(.*)') {
    # Don't want to force people to have a FlashVideo/Site directory
    # structure in their plugins directory, as this makes it harder to
    # install plugins manually.
    my $plugin_name = $1;

    my $plugin_dir = get_plugin_dir();

    debug "Trying to open plugin $plugin_dir/$plugin_name";

    if (open my $plugin_fh, '<', "$plugin_dir/$plugin_name") {
      return $plugin_fh; # Perl then reads the plugin from the FH
    }
  }

  return;
}

sub get_installed_plugins {
  my $plugin_dir = get_plugin_dir();

  my @plugins;
  if (opendir my $plugin_dir_dh, $plugin_dir) {
    @plugins = grep /\.pm$/i,
               readdir $plugin_dir_dh;