From bb53317daf59eae90085821575175a12e7c8fd0c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Benjamin=20B=C3=A4dorf?= <hello@benjaminbaedorf.eu>
Date: Wed, 10 Aug 2022 22:42:14 +0200
Subject: [PATCH] Add spotify as an audio option

Adds a `config.pub-solar.audio.spotify` option that when enabled
installs and configures `spotifyd` as a systemd daemon and `spotify-tui`
as the terminal-based UI.

After enabling, run `spt` in the terminal to open the UI.
---
 modules/audio/default.nix      | 27 ++++++++++++++++++++++++++-
 profiles/base-user/default.nix |  8 +++++++-
 2 files changed, 33 insertions(+), 2 deletions(-)

diff --git a/modules/audio/default.nix b/modules/audio/default.nix
index fcceefd3..b43dc4ac 100644
--- a/modules/audio/default.nix
+++ b/modules/audio/default.nix
@@ -9,10 +9,21 @@ in
   options.pub-solar.audio = {
     enable = mkEnableOption "Life in highs and lows";
     mopidy.enable = mkEnableOption "Life with mopidy";
+    spotify.enable = mkEnableOption "Life in DRM";
+    spotify.username = mkOption {
+      description = "Spotify login username or email";
+      type = types.str;
+      example = "yourname@example.com";
+      default = "";
+    };
     bluetooth.enable = mkEnableOption "Life with bluetooth";
   };
 
   config = mkIf cfg.enable {
+    users.users = pkgs.lib.setAttrByPath [ psCfg.user.name ] {
+      extraGroups = [ "audio" ];
+    };
+
     home-manager = with pkgs; pkgs.lib.setAttrByPath [ "users" psCfg.user.name ] {
       home.packages = [
         # easyeffects, e.g. for microphone noise filtering
@@ -24,9 +35,23 @@ in
         # Needed for pactl cmd, until pw-cli is more mature (vol up/down hotkeys?)
         pulseaudio
         vimpc
-      ];
+      ] ++ (if cfg.spotify.enable then [ pkgs.spotify-tui ] else [ ]);
       xdg.configFile."vimpc/vimpcrc".source = ./.config/vimpc/vimpcrc;
       systemd.user.services.easyeffects = import ./easyeffects.service.nix pkgs;
+
+      services.spotifyd = mkIf cfg.spotify.enable {
+        enable = true;
+        settings = {
+          global = {
+            username = cfg.spotify.username;
+            password_cmd = "DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1001/bus ${pkgs.libsecret}/bin/secret-tool lookup spotify password";
+            bitrate = 320;
+            volume_normalisation = true;
+            no_audio_cache = false;
+            max_cache_size = 1000000000;
+          };
+        };
+      };
     };
 
     # Enable sound using pipewire-pulse
diff --git a/profiles/base-user/default.nix b/profiles/base-user/default.nix
index 8f304794..9ff21c8e 100644
--- a/profiles/base-user/default.nix
+++ b/profiles/base-user/default.nix
@@ -16,7 +16,13 @@ in
       # home to /home/username, useDefaultShell to true, and isSystemUser to false.
       isNormalUser = true;
       description = psCfg.user.description;
-      extraGroups = [ "wheel" "docker" "input" "audio" "networkmanager" "lp" "scanner" ];
+      extraGroups = [
+        "wheel"
+        "input"
+        "networkmanager"
+        "lp"
+        "scanner"
+      ];
       initialHashedPassword = if psCfg.user.password != null then psCfg.user.password else "";
       shell = pkgs.zsh;
       openssh.authorizedKeys.keyFiles = if psCfg.user.publicKeys != null then psCfg.user.publicKeys else [ ];