fix(i3blocks): mic_mute now detects mic presence

home/oli/.config/i3blocks/config

@@ -44,8 +44,7 @@ signal=1
 [mic_mute]
 markup=pango
 command=~/bin/i3blocks/mic_mute
-interval=once
-signal=2
+interval=5
 
 # Indoor temperature and humidity
 [homeassistant-slow]

home/oli/.config/sway/config

@@ -217,7 +217,6 @@ bar {
     position bottom
     # font "BerkeleyMono Nerd Font Mono Normal Bold 10"
     font "BerkeleyMono Nerd Font Mono Normal Regular 11"
-    # status_command ~/.config/sway/status.sh
     status_command i3blocks
     strip_workspace_name no
     strip_workspace_numbers no

home/oli/bin/i3blocks/mic_mute

@@ -5,26 +5,37 @@
 
 . ~/bin/i3blocks/_utils
 
+# If wpctl get-volume @DEFAULT_AUDIO_SOURCE@ output doesn't start with
+# "Volume" we consider no microphone is connected. This is hacky, but needed
+# as wpctl doesn't RC != 0 when no mic is connected
+
 mic_mute() {
     if [[ "$BLOCK_BUTTON" == "1" ]]; then
         wpctl set-mute @DEFAULT_AUDIO_SOURCE@ toggle
     fi
 
     local wpctl_output
-    wpctl_output=$(wpctl get-volume @DEFAULT_AUDIO_SOURCE@)
+    wpctl_output=$(wpctl get-volume @DEFAULT_AUDIO_SOURCE@ 2>/dev/null)
     local muted
     muted=$(echo "$wpctl_output" | grep -c '\[MUTED\]')
 
     local bg fg icon stat
 
-    if [[ "$muted" -ge 1 ]]; then
+    # If the output does NOT start with 'Volume:', no microphone is connected
+    if [[ ! "$(echo $wpctl_output)" =~ ^Volume ]]; then
         bg=$mute_bg
         fg=$mute_fg
-        stat="MUT"
+        stat="N/A"
     else
-        bg=$crit_bg
-        fg=$crit_fg
-        stat="REC"
+        if [[ "$muted" -ge 1 ]]; then
+            bg=$mute_bg
+            fg=$mute_fg
+            stat="MUT"
+        else
+            bg=$crit_bg
+            fg=$crit_fg
+            stat="REC"
+        fi
     fi
 
     echo -e "MIC <span background=\"$bg\" color=\"$fg\"> $stat </span>\n"