Mute spellbook noises on login

.luacheckrc

@@ -33,6 +33,7 @@ read_globals = {
 	'Item',
 	'ItemLocation',
 	'PaperDollFrameItemFlyoutButtons', -- classic
+	'SOUNDKIT', -- retail
 
 	-- FrameXML functions
 	'AutoCastShine_AutoCastStart', -- classic
@@ -81,6 +82,8 @@ read_globals = {
 	'IsControlKeyDown',
 	'IsPlayerSpell',
 	'IsShiftKeyDown',
+	'MuteSoundFile', -- retail
 	'UnitHasVehicleUI',
 	'UnitLevel',
+	'UnmuteSoundFile', -- retail
 }

hack.lua

@@ -15,7 +15,7 @@
 
 -- in case other addons copies this, make sure it never loads multiple times unless there is a
 -- newer version of it, in which case we disable it and load anyways
-local version = 3
+local version = 4
 if _G['ForceLoadTradeSkillData'] then
 	if _G['ForceLoadTradeSkillData'].version < version then
 		_G['ForceLoadTradeSkillData']:UnregisterAllEvents()
@@ -47,6 +47,10 @@ hack:SetScript('OnEvent', function(self, event)
 			C_TradeSkillUI.CloseTradeSkill()
 			self:UnregisterEvent(event)
 			UIParent:RegisterEvent(event)
+
+			-- unmute sounds
+			UnmuteSoundFile(SOUNDKIT.UI_PROFESSIONS_WINDOW_OPEN)
+			UnmuteSoundFile(SOUNDKIT.UI_PROFESSIONS_WINDOW_CLOSE)
 		end
 	end
 end)
@@ -55,6 +59,10 @@ function hack:OnKeyDown()
 	-- unregister ourselves first to avoid duplicate queries
 	self:SetScript('OnKeyDown', nil)
 
+	-- be silent
+	MuteSoundFile(SOUNDKIT.UI_PROFESSIONS_WINDOW_OPEN)
+	MuteSoundFile(SOUNDKIT.UI_PROFESSIONS_WINDOW_CLOSE)
+
 	-- listen for tradeskill UI opening then query it
 	UIParent:UnregisterEvent('TRADE_SKILL_SHOW')
 	self:RegisterEvent('TRADE_SKILL_SHOW')