From 7cd44bbe53622c6569eda33aeee8b1dde356ea3f Mon Sep 17 00:00:00 2001
From: polyfloyd <floyd@polyfloyd.net>
Date: Wed, 14 May 2025 21:26:36 +0200
Subject: [PATCH] music: Add MPD

---
 roles/music/handlers/main.yaml    |  6 +++++
 roles/music/tasks/mpd.yaml        | 37 +++++++++++++++++++++++-----
 roles/music/templates/mpd.conf    | 40 +++++++++++++++++++++++++++++++
 roles/music/templates/mpd.service | 21 ++++++++++++++++
 roles/music/templates/mpd_state   | 17 +++++++++++++
 5 files changed, 115 insertions(+), 6 deletions(-)
 create mode 100644 roles/music/templates/mpd.conf
 create mode 100644 roles/music/templates/mpd.service
 create mode 100644 roles/music/templates/mpd_state

diff --git a/roles/music/handlers/main.yaml b/roles/music/handlers/main.yaml
index faf76f9..19193d6 100644
--- a/roles/music/handlers/main.yaml
+++ b/roles/music/handlers/main.yaml
@@ -2,6 +2,12 @@
 - ansible.builtin.import_tasks:
     file: ../../common/handlers/main.yaml
 
+- name: restart mpd
+  ansible.builtin.systemd:
+    name: mpd
+    state: restarted
+    daemon_reload: true
+
 - name: Restart trollibox
   ansible.builtin.systemd:
     name: trollibox
diff --git a/roles/music/tasks/mpd.yaml b/roles/music/tasks/mpd.yaml
index eb88133..317df4e 100644
--- a/roles/music/tasks/mpd.yaml
+++ b/roles/music/tasks/mpd.yaml
@@ -1,14 +1,32 @@
 ---
-
 - name: Install MPD
   ansible.builtin.apt:
-    name:
-      - jackd
-      - mpd
-      - python3-mpd
-      - python3-serial
+    name: mpd
     state: present
 
+- name: Add mpd user to the {{ music_audio_group }} group
+  user:
+    name: mpd
+    groups:
+      - "{{ music_audio_group }}"
+  notify: restart mpd
+
+- name: Install mpd file
+  ansible.builtin.template:
+    src: "{{ item.src }}"
+    dest: "{{ item.dest }}"
+    owner: root
+    group: root
+    mode: 0644
+  notify: restart mpd
+  with_items:
+    - src: mpd.conf
+      dest: /etc/mpd.conf
+    - src: mpd.service
+      dest: /etc/systemd/system/mpd.service
+    - src: mpd_state
+      dest: /var/lib/mpd/state.default
+
 - name: Install mpd-volume-to-mqtt script
   ansible.builtin.template:
     src: mpd-volume-to-mqtt.sh
@@ -34,6 +52,13 @@
     enabled: true
     daemon_reload: true
 
+- name: Install skipbutton depedencies
+  ansible.builtin.apt:
+    name:
+      - python3-mpd
+      - python3-serial
+    state: present
+
 - name: Clone skipbutton source
   ansible.builtin.git:
     repo: https://github.com/bitlair/skipbutton.git
diff --git a/roles/music/templates/mpd.conf b/roles/music/templates/mpd.conf
new file mode 100644
index 0000000..efa28f7
--- /dev/null
+++ b/roles/music/templates/mpd.conf
@@ -0,0 +1,40 @@
+# {{ ansible_managed }}
+
+user "mpd"
+group "{{ music_audio_group }}"
+
+bind_to_address "any"
+port "6600"
+max_connections "20"
+
+zeroconf_enabled "yes"
+zeroconf_name "MPD @ %h"
+
+music_directory "/srv/media/music"
+auto_update "yes"
+filesystem_charset "UTF-8"
+
+playlist_directory "/var/lib/mpd/playlists"
+db_file "/var/lib/mpd/tag_cache"
+state_file "/var/lib/mpd/state"
+sticker_file "/var/lib/mpd/sticker.sql"
+
+input {
+        plugin "curl" # Required for web streams.
+}
+
+decoder {
+        plugin  "hybrid_dsd"
+        enabled "no"
+}
+
+decoder {
+        plugin  "wildmidi"
+        enabled "no"
+}
+
+audio_output {
+       type     "pulse"
+       name     "Pulse"
+       server   "/tmp/pipewire-pulse-socket"
+}
diff --git a/roles/music/templates/mpd.service b/roles/music/templates/mpd.service
new file mode 100644
index 0000000..fb9808d
--- /dev/null
+++ b/roles/music/templates/mpd.service
@@ -0,0 +1,21 @@
+# {{ ansible_managed }}
+
+[Unit]
+Description=Music Player Daemon
+After=network.target
+
+[Service]
+Type=simple
+ExecStartPre=/bin/mkdir -p /run/mpd
+ExecStartPre=/bin/chown -R mpd:nogroup /run/mpd
+ExecStartPre=/bin/touch /var/log/mpd.log
+ExecStartPre=/bin/chown mpd:nogroup /var/log/mpd.log
+ExecStartPre=/usr/bin/cp /var/lib/mpd/state.default /var/lib/mpd/state
+ExecStart=/usr/bin/mpd --no-daemon /etc/mpd.conf
+# MDP will fork itself to the user defined in its config
+User=root
+LimitMEMLOCK=infinity
+LimitRTPRIO=99
+
+[Install]
+WantedBy=multi-user.target
diff --git a/roles/music/templates/mpd_state b/roles/music/templates/mpd_state
new file mode 100644
index 0000000..27b059b
--- /dev/null
+++ b/roles/music/templates/mpd_state
@@ -0,0 +1,17 @@
+sw_volume: 20
+audio_device_state:1:Pulse
+state: play
+current: 0
+time: 0
+random: 0
+repeat: 0
+single: 0
+consume: 0
+crossfade: 0
+mixrampdb: 0.000000
+mixrampdelay: -1.000000
+playlist_begin
+song_begin: http://ice4.somafm.com/groovesalad-256-mp3
+Name: SomaFM Groove Salad
+song_end
+playlist_end