init.lua

local utils = require 'utils'

hs.hotkey.bind(utils.hyper, "Left", utils.getScreen(function(win, frame, screen, screenFrame)
	local margin = 10
	local myFrame = hs.fnutils.copy(frame)
	myFrame.x = screenFrame.x + margin
	myFrame.y = screenFrame.y + margin
	myFrame.w = screenFrame.w/2 - margin*2
	myFrame.h = screenFrame.h - margin*2
	if utils.rectEquals(myFrame, frame) then
		utils.throwNext(win, screen)
	else
		win:setFrame(myFrame)
	end
end))

hs.hotkey.bind(utils.hyper, "Right", utils.getScreen(function(win, frame, screen, screenFrame)
	local margin = 10
	local myFrame = hs.fnutils.copy(frame)
	myFrame.x = screenFrame.x + screenFrame.w/2 + margin
	myFrame.y = screenFrame.y + margin
	myFrame.w = screenFrame.w/2 - margin*2
	myFrame.h = screenFrame.h - margin*2
	if utils.rectEquals(myFrame, frame) then
		utils.throwNext(win, screen)
	else
		win:setFrame(myFrame)
	end
end))

hs.hotkey.bind(utils.hyper, "Up", utils.getScreen(function(win, frame, screen, screenFrame)
	local margin = 10
	local myFrame = hs.fnutils.copy(frame)
	myFrame.x = screenFrame.x + margin
	myFrame.y = screenFrame.y + margin
	myFrame.w = screenFrame.w - margin*2
	myFrame.h = screenFrame.h - margin*2
	if utils.rectEquals(myFrame, frame) then
		utils.throwNext(win, screen)
	else
		win:setFrame(myFrame)
	end
end))

hs.hotkey.bind(utils.hyper, "1", function()
  hs.notify.new({
  	title="Spotify",
  	informativeText=hs.spotify.getCurrentArtist() .. " - \"" .. hs.spotify.getCurrentTrack() .. "\""
  }):send()
end)

local pasteTimer
hs.hotkey.bind(utils.hyper, "v",
	function()
		pasteTimer = hs.timer.secondsSinceEpoch()
		hs.eventtap.keyStrokes(utils.makeString(10))
	end,
	function()
		local diff = hs.timer.secondsSinceEpoch() - pasteTimer
		if diff > 0.2 then
			hs.eventtap.keyStrokes("@example.com")
		end
	end
)


apps = {
	chrome = 		{key="A", bundleId = 'com.google.Chrome'},
	chromeCanary = 	{key="X", bundleId = 'com.google.Chrome.canary'},
	finder = 		{key="F", name="Finder"},
	helium = 		{key="H", name="Helium"},
	hipchat = 		{key="Q", name="HipChat"},
	iTerm = 		{key="D", name="iTerm"},
	slack = 		{key="W", name="Slack"},
	spotify = 		{key="E", name="Spotify"},
	sublimeText = 	{key="S", name="Sublime Text"},
	twitter = 		{key="Z", name="Twitter"},
}
for key, val in pairs(apps) do  -- Table iteration.
	local focusFn
	if val.bundleId then
		focusFn = utils.focusAppByBundleId(val.bundleId)
	else
		focusFn = utils.focusApp(val.name)
	end
	hs.hotkey.bind(utils.hyper, val.key, focusFn)
end


hs.alert.show("Config loaded")
hs.window.animationDuration = 0.05

utils.lua

local utils = {}

utils.hyper = { "cmd", "alt", "shift", "ctrl" }

function utils.getScreen(callback)
	return function()
		local win = hs.window.focusedWindow()
		local frame = win:frame()
		local screen = win:screen()
		local screenFrame = screen:frame()
		if win then
			callback(win, frame, screen, screenFrame)
		end
	end
end

function utils.focusApp(name)
	return function()
		return hs.application.launchOrFocus(name)
	end
end

function utils.focusAppByBundleId(bundleId)
	return function()
		return hs.application.launchOrFocusByBundleID(bundleId)
	end
end

function utils.rectEquals(frame1, frame2)
	return (
		frame1.x == frame2.x and
		frame1.y == frame2.y and
		frame1.width == frame2.width and
		frame1.height == frame2.height
	)
end

function utils.throwNext(win, screen)
	local toScreen = screen:toEast()
	if not toScreen then
		toScreen = screen:toWest()
	end

	if toScreen then
		win:moveToScreen(toScreen)
	else
		hs.notify.new({
			title="Hammerspoon",
			informativeText="No screen to east or west"
		}):send()
	end
end

function utils.makeString(length)
	length = length or 1
	if length < 1 then return nil end
	local array = {}
	for i = 1, length do
		local rand = math.random(48, 122)
		while (rand >= 57 and rand < 65) or (rand >= 91 and rand < 97) do
			rand = math.random(48, 122)
		end
		array[i] = string.char(rand)
	end
	return table.concat(array)
end

function utils.reloadConfig(files)
    doReload = false
    for _,file in pairs(files) do
        if file:sub(-4) == ".lua" then
            doReload = true
        end
    end
    if doReload then
        hs.reload()
    end
end
hs.pathwatcher.new(os.getenv("HOME") .. "/.hammerspoon/", utils.reloadConfig):start()

return utils