From 20f5597d394ae7dd1764e184d084257652a7ca10 Mon Sep 17 00:00:00 2001
From: Tom Willemse <tom@ryuslash.org>
Date: Tue, 7 Mar 2023 23:51:42 -0800
Subject: [PATCH] Add service for notifications for MPD

---
 oni/home/config/rincewind.scm |  6 +++--
 oni/home/services/mpd.scm     | 44 ++++++++++++++++++++++++++++++++++-
 oni/packages/mpd-notify.scm   | 42 +++++++++++++++++++++++++++++++++
 3 files changed, 89 insertions(+), 3 deletions(-)
 create mode 100644 oni/packages/mpd-notify.scm

diff --git a/oni/home/config/rincewind.scm b/oni/home/config/rincewind.scm
index 7b397a5..8d82bef 100644
--- a/oni/home/config/rincewind.scm
+++ b/oni/home/config/rincewind.scm
@@ -52,7 +52,8 @@
                 #:select (home-mpd-service-type
                           home-mpd-configuration
                           <home-mpd-audio-output>
-                          home-mpc-update-service-type))
+                          home-mpc-update-service-type
+                          home-mpd-notify-service-type))
   #:use-module ((oni home services picom)
                 #:select (home-picom-service-type
                           home-picom-configuration))
@@ -224,4 +225,5 @@
                       #:name "Visualizer"
                       #:path "/tmp/mpd.fifo"
                       #:format "44100:16:2")))))
-   (service home-mpc-update-service-type))))
+   (service home-mpc-update-service-type)
+   (service home-mpd-notify-service-type))))
diff --git a/oni/home/services/mpd.scm b/oni/home/services/mpd.scm
index c64fef2..992a6c2 100644
--- a/oni/home/services/mpd.scm
+++ b/oni/home/services/mpd.scm
@@ -9,13 +9,18 @@
   #:use-module (srfi srfi-1)
   #:use-module (oop goops)
   #:use-module (ice-9 string-fun)
+  #:use-module ((oni packages mpd-notify)
+                #:select (mpd-notify))
 
   #:export (home-mpd-service-type
             home-mpd-configuration
             <home-mpd-audio-output>
 
             home-mpc-update-service-type
-            home-mpc-update-configuration))
+            home-mpc-update-configuration
+
+            home-mpd-notify-service-type
+            home-mpd-notify-configuration))
 
 (define (serialize-boolean field value)
   "")
@@ -161,3 +166,40 @@
    (compose identity)
    (default-value (home-mpc-update-configuration))
    (description "Install and configure mpc update.")))
+
+(define-configuration home-mpd-notify-configuration
+  (package
+    (package mpd-notify)
+    "Package to use for setting MPD notify")
+  (auto-start?
+   (boolean #t)
+   "Should mpd notify be started automatically?"))
+
+(define (add-mpd-notify-packages config)
+  (list (home-mpd-notify-configuration-package config)))
+
+(define (home-mpd-notify-shepherd-service config)
+  (list
+   (shepherd-service
+    (documentation "Show notifications for MPD player state changes")
+    (provision '(mpd-notify))
+    (auto-start? (home-mpd-notify-configuration-auto-start? config))
+    (start
+     #~(make-forkexec-constructor
+        (list #$(file-append (home-mpd-notify-configuration-package config) "/bin/mpd-notify"))
+        #:log-file (format #f "~a/.local/var/log/mpd-notify.log" (getenv "HOME"))))
+    (stop #~(make-kill-destructor)))))
+
+(define home-mpd-notify-service-type
+  (service-type
+   (name 'home-mpd-notify)
+   (extensions
+    (list (service-extension
+           home-profile-service-type
+           add-mpd-notify-packages)
+          (service-extension
+           home-shepherd-service-type
+           home-mpd-notify-shepherd-service)))
+   (compose identity)
+   (default-value (home-mpd-notify-configuration))
+   (description "Install and configure mpd notifications.")))
diff --git a/oni/packages/mpd-notify.scm b/oni/packages/mpd-notify.scm
new file mode 100644
index 0000000..cc6e23a
--- /dev/null
+++ b/oni/packages/mpd-notify.scm
@@ -0,0 +1,42 @@
+(define-module (oni packages mpd-notify)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (gnu packages base)
+  #:use-module (gnu packages shells)
+  #:use-module (gnu packages mpd)
+  #:use-module (gnu packages gnome)
+  #:use-module (guix build-system gnu)
+  #:use-module (guix git-download)
+  #:use-module (guix packages))
+
+(define-public mpd-notify
+  (let ((commit "66547ca1139d28855917382c868ddf2723d5afd4")
+        (revision "0"))
+    (package
+      (name "mpd-notify")
+      (version (git-version "0.0.0" revision commit))
+      (source
+       (origin
+         (uri (git-reference
+               (url "git://ryuslash.org/util/tom/mpd-notify")
+               (commit commit)))
+         (method git-fetch)
+         (sha256
+          (base32 "0r1ba6p1bsfz2k6zh5c6aivj9b71g7a00bgm8m22x6bdbsbm5gvb"))
+         (file-name (git-file-name name version))))
+      (propagated-inputs
+       (list mpd-mpc zsh libnotify))
+      (build-system gnu-build-system)
+      (arguments
+       `(#:tests? #f
+         #:phases
+         (modify-phases %standard-phases
+           (delete 'configure)
+           (delete 'build)
+           (replace 'install
+             (lambda* (#:key outputs #:allow-other-keys)
+               (let ((bin (string-append (assoc-ref outputs "out") "/bin")))
+                 (install-file "mpd-notify" bin)))))))
+      (home-page "https://ryuslash.org/")
+      (synopsis "A simple script that notifies you of MPD player state changes.")
+      (description "Uses `mpc idleloop' to listen to player state changes and sends notifications.")
+      (license license:gpl3+))))