feat(eww): Add simple bluetooth widget

.config/eww/eww.yuck

@@ -6,6 +6,9 @@
 ; Battery
 (defvar battery-icons '{"Full": {"10": "󰂄"}, "Charging": ["󰢟", "󰢜", "󰂆", "󰂇", "󰂈", "󰢝", "󰂉", "󰢞", "󰂊", "󰂋", "󰂅"], "Discharging": ["󰂎", "󰁺", "󰁻", "󰁼", "󰁽", "󰁾", "󰁿", "󰂀", "󰂁", "󰂂", "󰁹"]}')
 
+; Bluetooth
+(deflisten bluetooth :initial "{}" "~/.config/eww/scripts/get-bluetooth.sh")
+
 ; DateTime
 (defpoll datetime :interval "1s" "date +'%a %-e %b %X'")
 (defpoll month :interval "1m" :initial "1" "date +'%m'")
@@ -46,6 +49,7 @@
     (packages-updates)
     (volume)
     (network)
+    (bluetooth)
   )
 )
 
@@ -118,8 +122,24 @@
   )
 )
 
+(defwidget bluetooth []
+  (eventbox :onclick "~/.config/eww/scripts/toggle-bluetooth-state.sh"
+    (label :text "${bluetooth.icon} ${bluetooth.device}"
+           :class "${bluetooth.state}"
+    )
+  )
+)
+
 
 (defwidget bar-middle []
+  (box :halign "center"
+       :spacing 12
+       :space-evenly false
+    (title)
+  )
+)
+
+(defwidget title []
   (label :limit-width 42
          :show-truncated false
          :text "${window-title}"

.config/eww/scripts/get-bluetooth.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+
+interval=2
+
+function get {
+  unset icon state device
+
+  if bluetoothctl show | grep -q 'Powered: no'; then
+    icon="󰂲"
+    state="disabled"
+    device="Disabled"
+  else
+    icon="󰂯"
+    state="powered"
+    device="Not connected"
+  fi
+
+  cat << EOF
+{"icon": "$icon", "state": "$state", "device": "$device"}
+EOF
+}
+
+if [[ "$1" == "once" ]]; then
+  get
+else
+  while :; do
+  get
+  sleep $interval
+  done
+fi

.config/eww/scripts/toggle-bluetooth-state.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+if [[ $(bluetoothctl show | grep Powered: | cut -f 2 -d ' ') == "no" ]]; then
+	if [[ ! $(bluetoothctl power on) ]]; then
+	    rfkill block bluetooth
+      rfkill unblock bluetooth
+	fi
+else
+    bluetoothctl power off
+fi
+
+eww update bluetooth="$(~/.config/eww/scripts/get-bluetooth.sh once)"