{ config, lib, pkgs, ... }:
let
  spotifyd_cache_dir = "/tmp/spotifyd";
  cfg = config.grimmShared;
  spotifyd-dbus = pkgs.writeTextDir "share/dbus-1/system.d/org.mpris.MediaPlayer2.spotifyd.conf" ''
    <?xml version="1.0" encoding="UTF-8"?> <!-- -*- XML -*- -->

    <!DOCTYPE busconfig PUBLIC
     "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
     "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
    <busconfig>
            <policy user="spotifyd">
                    <allow own_prefix="org.mpris.MediaPlayer2.spotifyd"/>
                    <allow send_destination_prefix="org.mpris.MediaPlayer2.spotifyd"/>
                    <allow receive_sender="org.mpris.MediaPlayer2"/>
            </policy>
            <policy context="default">
                    <allow send_destination_prefix="org.mpris.MediaPlayer2.spotifyd"/>
                    <allow receive_sender="org.mpris.MediaPlayer2"/>
            </policy>
    </busconfig>
  '';
in
{
  config = with cfg; lib.mkIf (enable && spotify.enable && spotify.spotifyd.enable) {
    environment.systemPackages = with pkgs; [
      spotifyd
      spotifyd-dbus
    ];

    systemd.services.init-spotifyd-cache-dir = {
      description = "Create the spotifyd cache dir";
      wantedBy = [ "multi-user.target" ];

      serviceConfig.Type = "oneshot";
      script = ''
        mkdir -p ${spotifyd_cache_dir}
        chown spotifyd:spotifyd -R ${spotifyd_cache_dir}
      '';
    };

    # spotifyd config
    services.spotifyd = {
      enable = true;
      settings.global = {
        bitrate = 320;
        username = cfg.spotify.spotifyd.username;
        device_name = "grimm_laptop";
        password_cmd = let pass = cfg.spotify.spotifyd.pass; in with lib; if (lib.isPath pass || lib.isString pass) then "${pkgs.coreutils-full}/bin/cat ${pass}" else (getExe pass);
        device_type = "computer";
        dbus_type = "system";
        device = "default";
        control = "default";
        volume_controller = "softvol";
        #      no_audio_cache = true;
        spotifyd_cache_dir = spotifyd_cache_dir;
        max_cache_size = 10000000000;
        initial_volume = "90";
        backend = "alsa"; # fixme
      };
    };


    services.dbus.packages = with pkgs; [
      spotifyd-dbus
    ];

    # spotifyd has access to global pipewire
    users.users.spotifyd = {
      isSystemUser = true;
      group = "spotifyd";
      extraGroups = [ "audio" "pipewire" ];
    };

    # spotifyd is also a group
    users.groups = { spotifyd = { }; };
  };

  options.grimmShared.spotify.spotifyd = with lib; {
    enable = mkEnableOption "grimm-spotify-tui";

    username = mkOption {
      type = types.nonEmptyStr;
      description = "spotify username";
    };


    pass = mkOption {
      type = types.either types.nonEmptyStr (types.either types.package types.path);
      description = "command to execute to obtain login information or readable path to a file containing them";
    };
  };
}