My Hammerspoon configuration

hammerspoon_config.lua

-- Bring all Finder windows to front
function applicationWatcher(appName, eventType, appObject)
    if (eventType == hs.application.watcher.activated) then
        if (appName == "Finder") then
            -- Bring all Finder windows forward when one gets activated
            appObject:selectMenuItem({"Window", "Bring All to Front"})
        end
    end
end
local appWatcher = hs.application.watcher.new(applicationWatcher)
appWatcher:start()


function sleepWatch(eventType)
	if (eventType == hs.caffeinate.watcher.systemWillSleep) then
		hs.alert.show("Going to sleep!")
	elseif (eventType == hs.caffeinate.watcher.systemDidWake) then
		hs.alert.show("Waking up!")
	end
end

local sleepWatcher = hs.caffeinate.watcher.new(sleepWatch)
sleepWatcher:start()

-- Circle mouse pointer on CMD+ALT+SHIFT+D
local mouseCircle = nil
local mouseCircleTimer = nil

function mouseHighlight()
    -- Delete an existing highlight if it exists
    if mouseCircle then
        mouseCircle:delete()
        if mouseCircleTimer then
            mouseCircleTimer:stop()
        end
    end
    -- Get the current co-ordinates of the mouse pointer
    mousepoint = hs.mouse.getAbsolutePosition()
    -- Prepare a big red circle around the mouse pointer
    mouseCircle = hs.drawing.circle(hs.geometry.rect(mousepoint.x-40, mousepoint.y-40, 80, 80))
    mouseCircle:setStrokeColor({["red"]=1,["blue"]=0,["green"]=0,["alpha"]=1})
    mouseCircle:setFill(false)
    mouseCircle:setStrokeWidth(5)
    mouseCircle:show()

    -- Set a timer to delete the circle after 3 seconds
    mouseCircleTimer = hs.timer.doAfter(3, function() mouseCircle:delete() end)
end
hs.hotkey.bind({"cmd","alt","shift"}, "D", mouseHighlight)

-- Watch insertion of particular USB device
-- local usbWatcher = nil

-- function usbDeviceCallback(data)
--     if (data["productName"] == "ScanSnap S1300i") then
--         if (data["eventType"] == "added") then
--             hs.application.launchOrFocus("ScanSnap Manager")
--         elseif (data["eventType"] == "removed") then
--             app = hs.appfinder.appFromName("ScanSnap Manager")
--             app:kill()
--         end
--     end
-- end

-- usbWatcher = hs.usb.watcher.new(usbDeviceCallback)
-- usbWatcher:start()