From 36e5025868cfd674ef4f8a0ae0529371d6581572 Mon Sep 17 00:00:00 2001
From: Ryan Schanzenbacher <ryan@rschanz.org>
Date: Thu, 9 Jul 2026 23:28:49 -0400
Subject: hammerspoon listener pt 1

---
 users/ryan/hammerspoon/init.lua | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 users/ryan/hammerspoon/init.lua

(limited to 'users/ryan/hammerspoon/init.lua')

diff --git a/users/ryan/hammerspoon/init.lua b/users/ryan/hammerspoon/init.lua
new file mode 100644
index 0000000..1245a09
--- /dev/null
+++ b/users/ryan/hammerspoon/init.lua
@@ -0,0 +1,35 @@
+-- ~/.hammerspoon/init.lua
+
+local function refreshWidget()
+    hs.http.asyncGet("http://127.0.0.1:7776/widget/sound/refresh", nil, function(status, body, headers)
+        -- optional: log failures
+        if status ~= 200 then
+            print("Widget refresh failed with status: " .. tostring(status))
+        end
+    end)
+end
+
+local function audioWatcherCallback(uid, eventName, scope, element)
+    -- "vmvc" = volume changed, "mute" = mute toggled
+    if eventName == "vmvc" or eventName == "mute" then
+        refreshWidget()
+    end
+end
+
+local function setupAudioWatcher()
+    local device = hs.audiodevice.defaultOutputDevice()
+    if device then
+        device:watcherCallback(audioWatcherCallback)
+        device:watcherStart()
+    end
+end
+
+setupAudioWatcher()
+
+-- Re-attach the watcher if the default output device changes (e.g. plugging in headphones)
+hs.audiodevice.watcher.setCallback(function(event)
+    if event == "dOut " then  -- note: the trailing space is intentional, it's part of the event name
+        setupAudioWatcher()
+    end
+end)
+hs.audiodevice.watcher.start()
-- 
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