My Hammerspoon config.lua

caffeine = hs.menubar.new()
function setCaffeineDisplay(state)
    if state then
        caffeine:setTitle("AWAKE")
    else
        caffeine:setTitle("SLEEPY")
    end
end

function showNotification()
    if not notif_draw then
        local mainScreen = hs.screen.mainScreen()
        local mainRes = mainScreen:fullFrame()
        local notif_str = hs.execute("~/app/hammerspoon/notif")
        local notif = hs.styledtext.new(notif_str,{font={name="Impact",size=120},color=red, paragraphStyle={alignment="center"}})
        local timeframe = hs.geometry.rect((mainRes.w-300)/2,(mainRes.h-200)/2,300,150)
        notif_draw = hs.drawing.text(timeframe,notif)
        notif_draw:setLevel(hs.drawing.windowLevels.overlay)
        notif_draw:show()
        timer = hs.timer.doAfter(4, function() notif_draw:delete() notif_draw=nil end)
    else
        notif_draw:delete()
        notif_draw=nil
    end
end

function baseMove(x, y, w, h)
    return function()
        local win = hs.window.focusedWindow()
        local f = win:frame()
        local screen = win:screen()
        local max = screen:frame()
        local diff = screen:fullFrame().x - screen:frame().x
        f.x = max.w * x - diff
        f.y = max.h * y
        f.w = max.w * w
        f.h = max.h * h
        win:setFrame(f, 0)
    end
end

function caffeineClicked()
    setCaffeineDisplay(hs.caffeinate.toggle("displayIdle"))
end

if caffeine then
    caffeine:setClickCallback(caffeineClicked)
    setCaffeineDisplay(hs.caffeinate.get("displayIdle"))
end

function sendMessage()
    button,message = hs.dialog.textPrompt("Main message.", "Please enter something:")    
    hs.messages.iMessage("+910000000000", message)
    hs.notify("sent")
end

local functionMap = {
    paste = function() 
        hs.timer.doAfter(2,hs.eventtap.keyStrokes(hs.pasteboard.getContents()))
    end
}

local choices = {
    {
        ["text"] = "Project Techfund",
        ["subText"] = "This will run techfund server and UI",
        ["type"] = "script",
        ["script"] = "/Users/pg/.personalScripts/techfund.applescript"
    },
    { ["text"] = "Project Ink",
        ["subText"] = "This will run INK !",
        ["type"] = "script",
        ["script"] = "/Users/pg/.personalScripts/ink.applescript"
    },
    { ["text"] = "Call *****",
        ["subText"] = "Make sure your mobile is nearby",
        ["type"] = "script",
        ["script"] = "/Users/pg/.personalScripts/*****.applescript"
    },
    { ["text"] = "Call Mummy",
        ["subText"] = "Make sure your mobile is nearby",
        ["type"] = "script",
        ["script"] = "/Users/piyushgururani/.personalScripts/mummy.applescript"
    },
    { ["text"] = "Call Papa",
        ["subText"] = "Make sure your mobile is nearby",
        ["type"] = "script",
        ["script"] = "/Users/piyushgururani/.personalScripts/papa.applescript"
    },
    { ["text"] = "Call *****",
        ["subText"] = "Make sure your mobile is nearby",
        ["type"] = "script",
        ["script"] = "/Users/piyushgururani/.personalScripts/*****.applescript"
    },
    { ["text"] = "Function paste",
        ["subText"] = "Special paste to overcome paste blocking",
        ["type"] = "function",
        ["script"] = "paste"
    }
}

local projectChoices = hs.chooser.new(function(option)
    if not option then return end
    hs.alert.show("Running .. " .. option["text"])
    if option["type"]=="script" then hs.osascript.applescriptFromFile(option["script"])
    elseif option["type"]=="function" then functionMap[option["script"]]()
    else hs.alert.show("Invalid argument")
    end  
end)

switcher_space = hs.window.switcher.new(hs.window.filter.new():setDefaultFilter{}) -- include minimized/hidden windows, current Space only
switcher_space.ui.textColor = {0.9,0.9,0.9}
switcher_space.ui.fontName = 'Lucida Grande'
switcher_space.ui.textSize = 16 
switcher_space.ui.highlightColor = {0,0,0,0.8} 
switcher_space.ui.backgroundColor = {0.3,0.3,0.3,0.5}
switcher_space.ui.onlyActiveApplication = false 
switcher_space.ui.showTitles = false 
switcher_space.ui.titleBackgroundColor = {0,0,0}
switcher_space.ui.showThumbnails = false 
switcher_space.ui.showSelectedThumbnail = true 
switcher_space.ui.selectedThumbnailSize = 200
switcher_space.ui.showSelectedTitle = false 

hs.hotkey.bind('alt','tab',function()switcher_space:next()end)
hs.hotkey.bind('alt-shift','tab', function()switcher_space:previous()end)

projectChoices:bgDark(true)
projectChoices:choices(choices)
projectChoices:searchSubText(true)
projectChoices:rows(5)

-- hs.hotkey.bind({"cmd","alt"}, "M", sendMessage)
hs.hotkey.bind({'cmd', 'alt', 'ctrl'}, "space", function() projectChoices:show() end)
hs.hotkey.bind({'cmd', 'alt', 'ctrl'}, "L", function() hs.caffeinate.lockScreen() end)


hs.hotkey.bind({'cmd', 'alt', 'ctrl'}, 'A', baseMove(0, 0, 0.5, 1))
hs.hotkey.bind({'cmd', 'alt', 'ctrl'}, 'D', baseMove(0.5, 0, 0.5, 1))
hs.hotkey.bind({'cmd', 'alt', 'ctrl'}, 'W', baseMove(0, 0, 1, 0.5))
hs.hotkey.bind({'cmd', 'alt', 'ctrl'}, 'X', baseMove(0, 0.5, 1, 0.5))

hs.hotkey.bind({'cmd', 'alt', 'ctrl'}, 'Q', baseMove(0, 0, 0.5, 0.5))
hs.hotkey.bind({'cmd', 'alt', 'ctrl'}, 'Z', baseMove(0, 0.5, 0.5, 0.5))
hs.hotkey.bind({'cmd', 'alt', 'ctrl'}, 'E', baseMove(0.5, 0, 0.5, 0.5))
hs.hotkey.bind({'cmd', 'alt', 'ctrl'}, 'C', baseMove(0.5, 0.5, 0.5, 0.5))

hs.hotkey.bind({'cmd', 'alt', 'ctrl'}, 'F', baseMove(0, 0, 1, 1))
hs.hotkey.bind({'cmd', 'alt', 'ctrl'}, 'S', baseMove(0.25, 0.25, 0.5, 0.5))

Moving screen :

Calling and other handy functions

Wake / Sleep

Q is upper left
W is upper full
E is upper right
A is left
S is center
D is right
Z is lower left
X is lower
C is lower right