{ config, lib, pkgs, ... }: with lib; let cfg = config.services.mpdscribble; mpdCfg = config.services.mpd; endpointUrls = { "last.fm" = "http://post.audioscrobbler.com"; "libre.fm" = "http://turtle.libre.fm"; "jamendo" = "http://postaudioscrobbler.jamendo.com"; "listenbrainz" = "http://proxy.listenbrainz.org"; }; mkSection = secname: secCfg: '' [${secname}] url = ${secCfg.url} username = ${secCfg.username} password = {{${secname}_PASSWORD}} journal = /var/lib/mpdscribble/${secname}.journal ''; endpoints = concatStringsSep "\n" (mapAttrsToList mkSection cfg.endpoints); cfgTemplate = pkgs.writeText "mpdscribble.conf" '' ## This file was automatically genenrated by NixOS and will be overwritten. ## Do not edit. Edit your NixOS configuration instead. ## mpdscribble - an audioscrobbler for the Music Player Daemon. ## http://mpd.wikia.com/wiki/Client:mpdscribble # HTTP proxy URL. ${optionalString (cfg.proxy != null) "proxy = ${cfg.proxy}"} # The location of the mpdscribble log file. The special value # "syslog" makes mpdscribble use the local syslog daemon. On most # systems, log messages will appear in /var/log/daemon.log then. # "-" means log to stderr (the current terminal). log = - # How verbose mpdscribble's logging should be. Default is 1. verbose = ${toString cfg.verbose} # How often should mpdscribble save the journal file? [seconds] journal_interval = ${toString cfg.journalInterval} # The host running MPD, possibly protected by a password # ([PASSWORD@]HOSTNAME). host = ${(optionalString (cfg.passwordFile != null) "{{MPD_PASSWORD}}@") + cfg.host} # The port that the MPD listens on and mpdscribble should try to # connect to. port = ${toString cfg.port} ${endpoints} ''; cfgFile = "/run/mpdscribble/mpdscribble.conf"; replaceSecret = secretFile: placeholder: targetFile: optionalString (secretFile != null) '' ${pkgs.replace}/bin/replace-literal -ef ${placeholder} "$(cat ${secretFile})" ${targetFile}''; preStart = pkgs.writeShellScript "mpdscribble-pre-start" '' cp -f "${cfgTemplate}" "${cfgFile}" ${replaceSecret cfg.passwordFile "{{MPD_PASSWORD}}" cfgFile} ${concatStringsSep "\n" (mapAttrsToList (secname: cfg: replaceSecret cfg.passwordFile "{{${secname}_PASSWORD}}" cfgFile) cfg.endpoints)} ''; localMpd = (cfg.host == "localhost" || cfg.host == "127.0.0.1"); in { ###### interface options.services.mpdscribble = { enable = mkEnableOption "mpdscribble"; proxy = mkOption { default = null; type = types.nullOr types.str; description = '' HTTP proxy URL. ''; }; verbose = mkOption { default = 1; type = types.int; description = '' Log level for the mpdscribble daemon. ''; }; journalInterval = mkOption { default = 600; example = 60; type = types.int; description = '' How often should mpdscribble save the journal file? [seconds] ''; }; host = mkOption { default = (if mpdCfg.network.listenAddress != "any" then mpdCfg.network.listenAddress else "localhost"); type = types.str; description = '' Host for the mpdscribble daemon to search for a mpd daemon on. ''; }; passwordFile = mkOption { default = if localMpd then (findFirst (c: any (x: x == "read") c.permissions) { passwordFile = null; } mpdCfg.credentials).passwordFile else null; type = types.nullOr types.str; description = '' File containing the password for the mpd daemon. If there is a local mpd configured using the default is automatically set to a matching passwordFile of the local mpd. ''; }; port = mkOption { default = mpdCfg.network.port; type = types.port; description = '' Port for the mpdscribble daemon to search for a mpd daemon on. ''; }; endpoints = mkOption { type = (let endpoint = { name, ... }: { options = { url = mkOption { type = types.str; default = endpointUrls.${name} or ""; description = "The url endpoint where the scrobble API is listening."; }; username = mkOption { type = types.str; description = '' Username for the scrobble service. ''; }; passwordFile = mkOption { type = types.nullOr types.str; description = "File containing the password, either as MD5SUM or cleartext."; }; }; }; in types.attrsOf (types.submodule endpoint)); default = { }; example = { "last.fm" = { username = "foo"; passwordFile = "/run/secrets/lastfm_password"; }; }; description = '' Endpoints to scrobble to. If the endpoint is one of "${ concatStringsSep "\", \"" (attrNames endpointUrls) }" the url is set automatically. ''; }; }; ###### implementation config = mkIf cfg.enable { systemd.services.mpdscribble = { after = [ "network.target" ] ++ (optional localMpd "mpd.service"); description = "mpdscribble mpd scrobble client"; wantedBy = [ "multi-user.target" ]; serviceConfig = { DynamicUser = true; StateDirectory = "mpdscribble"; RuntimeDirectory = "mpdscribble"; RuntimeDirectoryMode = "700"; # TODO use LoadCredential= instead of running preStart with full privileges? ExecStartPre = "+${preStart}"; ExecStart = "${pkgs.mpdscribble}/bin/mpdscribble --no-daemon --conf ${cfgFile}"; }; }; }; }