Hammerspoon automation configuration

init.lua

hs.alert.show('Hammerspoon config loaded')
hotkeyF3 = hs.hotkey.modal.new('', 'f3')
hotkeyF4 = hs.hotkey.modal.new('', 'f4')
hs.window.animationDuration = 0.1
cachedNumScreens = #hs.screen.allScreens()
hs.dockicon.hide()
kodihost = 'http://192.168.1.140'

-------------------------------
-- Auto-reload functionality --
-------------------------------

function 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/', reloadConfig):start()

-------------------
-- Menu bar icon --
-------------------

function setMenuIcon(state, title)
    if state then
        menuIcon = hs.menubar.new()
        menuIcon:setTitle(title)
        menuIcon:setTooltip('Hammerspoon Hotkey Mode Active')
    else
        if menuIcon then
            menuIcon:delete()
        end
    end
end

setMenuIcon(false)

-------------------------------
-- Window size constants --
-------------------------------

local size1 = hs.geometry(0.0, 0.0, 0.5, 0.8)
local size2 = hs.geometry(0.5, 0.0, 0.5, 0.8)
local size3 = hs.geometry(0.0, 0.0, 0.5, 0.7)
local size4 = hs.geometry(0.5, 0.0, 0.5, 0.7)
local size5 = hs.geometry(0.0, 0.0, 0.6, 1.0)
local size6 = hs.geometry(0.4, 0.0, 0.6, 1.0)
local size7 = hs.geometry(0.0, 0.1, 0.5, 0.7)
local size8 = hs.geometry(0.5, 0.1, 0.5, 0.7)
local size9 = hs.geometry(0.45, 0.1, 0.55, 0.7)

local sizeCenter = hs.geometry(0.15, 0.15, 0.7, 0.7)

local function sizeHotkeyUnit(unit, k)
    local win = hs.window.focusedWindow()
    win:moveToUnit(unit)
    if k then
        k:exit()
    end
end

-------------------------
-- Normal key bindings --
-------------------------

hs.hotkey.bind({'shift', 'ctrl'}, 'f12', function() hs.caffeinate.systemSleep() end)

hs.hotkey.bind({'shift', 'ctrl'}, 'left', function() sizeHotkeyUnit(hs.geometry(0, 0, 0.5, 1)) end)
hs.hotkey.bind({'shift', 'ctrl'}, 'right', function() sizeHotkeyUnit(hs.geometry(0.5, 0, 0.5, 1)) end)
hs.hotkey.bind({'shift', 'ctrl'}, 'up', function() sizeHotkeyUnit(hs.geometry(0, 0, 1, 1)) end)
hs.hotkey.bind({'shift', 'ctrl'}, 'down', function() sizeHotkeyUnit(sizeCenter) end)

hs.hotkey.bind({'alt', 'ctrl'}, 'left', function()
    hs.alert.show('Left', 0.5)
    local win = hs.window.focusedWindow()
    win:moveOneScreenWest(false, true, 0)
end)

hs.hotkey.bind({'alt', 'ctrl'}, 'right', function()
    hs.alert.show('Right', 0.5)
    local win = hs.window.focusedWindow()
    win:moveOneScreenEast(false, true, 0)
end)

for key, name in pairs({
  f1 = 'Finder',
  f2 = 'Google Chrome',
  f3 = 'Atom',
  f4 = 'Terminal',
  f5 = 'Slack',
  f6 = 'Spotify',
  f7 = 'System Preferences',
}) do
    hs.hotkey.bind({'cmd'}, key, function()
        local app = hs.application.get(name)

        if not app then
            hs.alert.closeAll()
            hs.alert.show(name, 0.5)
            hs.application.launchOrFocus(name)
        elseif not app:isFrontmost() then
            hs.alert.closeAll()
            hs.alert.show(name, 0.5)
            app:activate()
        end
    end)
end

--[[
hs.hotkey.bind({'alt', 'ctrl'}, 'up', function()
    hs.alert.show('Up', 0.5)
    local win = hs.window.focusedWindow()
    win:moveOneScreenNorth(false, true, 0)
end)

hs.hotkey.bind({'alt', 'ctrl'}, 'down', function()
    hs.alert.show('Down', 0.5)
    local win = hs.window.focusedWindow()
    win:moveOneScreenSouth(false, true, 0)
end)
--]]

------------------
-- Kodi Hotkeys --
------------------

function sendKodiCommand(name, method, params)
    hs.alert.show('Kodi ' .. name, 0.6)
    local data = [[{
    	"jsonrpc": "2.0",
    	"method": "]] .. method .. [[",
    	"params": ]] .. params .. [[,
    	"id": 1
    }]]
    local headers = {
        ["Content-Type"] = 'application/json'
    }
    print(hs.http.post(kodihost .. '/jsonrpc', data, headers))
end

function unbindKodiKeys()
    hs.hotkey.deleteAll({'ctrl'}, 'f8');
    hs.hotkey.deleteAll({'ctrl'}, 'f7');
    hs.hotkey.deleteAll({'ctrl'}, 'f9');
    hs.hotkey.deleteAll({'ctrl'}, 'f10');
    hs.hotkey.deleteAll({'ctrl'}, 'f11');
    hs.hotkey.deleteAll({'ctrl'}, 'f12');
    hs.hotkey.deleteAll({'ctrl'}, 'left');
    hs.hotkey.deleteAll({'ctrl'}, 'right');
    hs.hotkey.deleteAll({'ctrl'}, 'up');
    hs.hotkey.deleteAll({'ctrl'}, 'down');
    hs.hotkey.deleteAll({'ctrl'}, 'return');
    hs.hotkey.deleteAll({'ctrl'}, 'delete');
    hs.hotkey.deleteAll({'ctrl'}, 'c');
end

function bindKodiKeys()
    hs.hotkey.bind({'ctrl'}, 'f8', function() sendKodiCommand('Play/Pause', 'Player.PlayPause', '{"playerid": 0}') end)
    hs.hotkey.bind({'ctrl'}, 'f7', function() sendKodiCommand('Previous', 'Player.GoTo', '{"playerid": 0, "to": "previous"}') end)
    hs.hotkey.bind({'ctrl'}, 'f9', function() sendKodiCommand('Next', 'Player.GoTo', '{"playerid": 0, "to": "next"}') end)
    hs.hotkey.bind({'ctrl'}, 'f10', function() sendKodiCommand('Mute/Unmute', 'Input.ExecuteAction', '{"action": "mute"}') end)
    hs.hotkey.bind({'ctrl'}, 'f11', function() sendKodiCommand('Volume Down', 'Input.ExecuteAction', '{"action": "volumedown"}') end, nil, function() sendKodiCommand('Volume Down', 'Input.ExecuteAction', '{"action": "volumedown"}') end)
    hs.hotkey.bind({'ctrl'}, 'f12', function() sendKodiCommand('Volume Up', 'Input.ExecuteAction', '{"action": "volumeup"}') end, nil, function() sendKodiCommand('Volume Up', 'Input.ExecuteAction', '{"action": "volumeup"}') end)

    hs.hotkey.bind({'ctrl'}, 'left', function() sendKodiCommand('Left', 'Input.ExecuteAction', '{"action": "left"}') end)
    hs.hotkey.bind({'ctrl'}, 'right', function() sendKodiCommand('Right', 'Input.ExecuteAction', '{"action": "right"}') end)
    hs.hotkey.bind({'ctrl'}, 'up', function() sendKodiCommand('Up', 'Input.ExecuteAction', '{"action": "up"}') end)
    hs.hotkey.bind({'ctrl'}, 'down', function() sendKodiCommand('Down', 'Input.ExecuteAction', '{"action": "down"}') end)
    hs.hotkey.bind({'ctrl'}, 'return', function() sendKodiCommand('Select', 'Input.ExecuteAction', '{"action": "select"}') end)
    hs.hotkey.bind({'ctrl'}, 'delete', function() sendKodiCommand('Back', 'Input.ExecuteAction', '{"action": "back"}') end)

    hs.hotkey.bind({'ctrl'}, '+', function() sendKodiCommand('Context', 'Input.ExecuteAction', '{"action": "contextmenu"}') end)
    hs.hotkey.bind({'ctrl'}, '´', function() hs.urlevent.openURL(kodihost .. '/#music') end)
end

-- Only bind Kodi keys after Hammerspoon loads if we are at home
if hs.wifi.currentNetwork('en0') == 'Do a flip!' then
    bindKodiKeys()
end

-- Bind and unbind Kodi keys depending on wifi network
hs.wifi.watcher.new(function(watcher, message, interface)
    print('Connected to wifi:')
    print(hs.wifi.currentNetwork(interface))
    if hs.wifi.currentNetwork(interface) == 'Do a flip!' then
        bindKodiKeys()
    else
        unbindKodiKeys()
    end

end):start()

------------------------------
-- F4 Modal Hotkey for Kodi --
------------------------------

function hotkeyF4:entered()
    setMenuIcon(true, 'Kodi')
    hs.alert.show('Kodi Active', 1)
end
function hotkeyF4:exited()
    setMenuIcon(false)
    hs.alert.closeAll()
end

hotkeyF4:bind('', 'escape', function() hotkeyF4:exit() end)
hotkeyF4:bind('', 'f3', function() hotkeyF4:exit() hotkeyF3:enter() end)
hotkeyF4:bind('', 'f4', function() hotkeyF4:exit() end)

hotkeyF4:bind('', 'f8', function() sendKodiCommand('Play/Pause', 'Player.PlayPause', '{"playerid": 0}') end)
hotkeyF4:bind('', 'f7', function() sendKodiCommand('Previous', 'Player.GoTo', '{"playerid": 0, "to": "previous"}') end)
hotkeyF4:bind('', 'f9', function() sendKodiCommand('Next', 'Player.GoTo', '{"playerid": 0, "to": "next"}') end)
hotkeyF4:bind('', 'f10', function() sendKodiCommand('Mute/Unmute', 'Input.ExecuteAction', '{"action": "mute"}') end)
hotkeyF4:bind('', 'f11', function() sendKodiCommand('Volume Down', 'Input.ExecuteAction', '{"action": "volumedown"}') end, nil, function() sendKodiCommand('Volume Down', 'Input.ExecuteAction', '{"action": "volumedown"}') end)
hotkeyF4:bind('', 'f12', function() sendKodiCommand('Volume Up', 'Input.ExecuteAction', '{"action": "volumeup"}') end, nil, function() sendKodiCommand('Volume Up', 'Input.ExecuteAction', '{"action": "volumeup"}') end)

hotkeyF4:bind('', 'left', function() sendKodiCommand('Left', 'Input.ExecuteAction', '{"action": "left"}') end)
hotkeyF4:bind('', 'right', function() sendKodiCommand('Right', 'Input.ExecuteAction', '{"action": "right"}') end)
hotkeyF4:bind('', 'up', function() sendKodiCommand('Up', 'Input.ExecuteAction', '{"action": "up"}') end)
hotkeyF4:bind('', 'down', function() sendKodiCommand('Down', 'Input.ExecuteAction', '{"action": "down"}') end)
hotkeyF4:bind('', 'return', function() sendKodiCommand('Select', 'Input.ExecuteAction', '{"action": "select"}') end)
hotkeyF4:bind('', 'delete', function() sendKodiCommand('Back', 'Input.ExecuteAction', '{"action": "back"}') end)

hotkeyF4:bind('', '+', function() sendKodiCommand('Back', 'Input.ExecuteAction', '{"action": "contextmenu"}') end)
hotkeyF4:bind('', 'c', function() sendKodiCommand('Back', 'Input.ExecuteAction', '{"action": "contextmenu"}') end)
hotkeyF4:bind('', '^', function() hs.alert.show('Toggling TV', 0.6) hs.http.get('http://pi.my.home:1880/bridge?topic=events/tv&value=2') end)

---------------------
-- F3 Modal Hotkey --
---------------------

function hotkeyF3:entered()
    setMenuIcon(true, 'F3')
    hs.alert.show('F3 Active', 1)
end
function hotkeyF3:exited()
    setMenuIcon(false)
    hs.alert.closeAll()
end

hotkeyF3:bind('', 'escape', function() hotkeyF3:exit() end)
hotkeyF3:bind('', 'f3', function() hotkeyF3:exit() end)
hotkeyF3:bind('', 'f4', function() hotkeyF3:exit() hotkeyF4:enter() end)

hotkeyF3:bind('', 'pad1', function() sizeHotkeyUnit(size1, hotkeyF3) end)
hotkeyF3:bind('', 'pad2', function() sizeHotkeyUnit(size2, hotkeyF3) end)
hotkeyF3:bind('', 'pad3', function() sizeHotkeyUnit(size3, hotkeyF3) end)
hotkeyF3:bind('', 'pad4', function() sizeHotkeyUnit(size4, hotkeyF3) end)
hotkeyF3:bind('', 'pad5', function() sizeHotkeyUnit(size5, hotkeyF3) end)
hotkeyF3:bind('', 'pad6', function() sizeHotkeyUnit(size6, hotkeyF3) end)
hotkeyF3:bind('', 'pad7', function() sizeHotkeyUnit(size7, hotkeyF3) end)
hotkeyF3:bind('', 'pad8', function() sizeHotkeyUnit(size8, hotkeyF3) end)
hotkeyF3:bind('', 'pad9', function() sizeHotkeyUnit(size9, hotkeyF3) end)

hotkeyF3:bind('', '1', function() sizeHotkeyUnit(size1, hotkeyF3) end)
hotkeyF3:bind('', '2', function() sizeHotkeyUnit(size2, hotkeyF3) end)
hotkeyF3:bind('', '3', function() sizeHotkeyUnit(size3, hotkeyF3) end)
hotkeyF3:bind('', '4', function() sizeHotkeyUnit(size4, hotkeyF3) end)
hotkeyF3:bind('', '5', function() sizeHotkeyUnit(size5, hotkeyF3) end)
hotkeyF3:bind('', '6', function() sizeHotkeyUnit(size6, hotkeyF3) end)
hotkeyF3:bind('', '7', function() sizeHotkeyUnit(size7, hotkeyF3) end)
hotkeyF3:bind('', '8', function() sizeHotkeyUnit(size8, hotkeyF3) end)
hotkeyF3:bind('', '9', function() sizeHotkeyUnit(size9, hotkeyF3) end)

-----------------------------------
-- Display Layout Configurations --
-----------------------------------
local laptopScreen = 'Color LCD'
local externalScreen = 'Thunderbolt Display'
local doubleLayout = {
    {'Atom', nil, externalScreen, size5, nil, nil},
    {'Brackets', nil, externalScreen, sizeCenter, nil, nil},
    {nil,  'Inbox – mb@issuu.com', externalScreen, size8, nil, nil},
    {nil,  'Issuu.com.*Calendar.*', externalScreen, size4, nil, nil},
    {'Slack', nil, externalScreen, size3, nil, nil},
    {'Spotify', nil, externalScreen, size9, nil, nil},
    {'Terminal', nil, laptopScreen, hs.layout.maximized, nil, nil},
    {'Google Chrome', nil, externalScreen, size1, nil, nil},
    {nil, '.*Developer.*Tools.*', externalScreen, hs.layout.right50, nil, nil},
}

local laptopLayout = {
    {nil,  'Issuu.com.*Calendar.*', laptopScreen, hs.layout.left50, nil, nil},
    {'Atom', nil, laptopScreen, hs.layout.left75, nil, nil},
    {'Google Chrome', nil, laptopScreen, hs.layout.maximized, nil, nil},
    {nil, '.*Developer.*Tools.*', laptopScreen, hs.layout.right70, nil, nil},
    {'Terminal', nil, laptopScreen, hs.layout.right50, nil, nil},
    {'Brackets', nil, externalScreen, sizeCenter, nil, nil},
    {'Slack', nil, externalScreen, sizeCenter, nil, nil},
}

local function windowTitleComparator(windowTitle, searchPattern)
    -- print(string.match(windowTitle, searchPattern) ~= nil, windowTitle, searchPattern)
    return string.match(windowTitle, searchPattern) ~= nil
end

function onScreenChanged(forceRelayout)
    hs.alert.show('Screen change detected')
    -- avoid relayout if the number of screens didn't change (e.g. wakeup from sleep)
    print(cachedNumScreens .. ' - ' .. #hs.screen.allScreens())
    if true or cachedNumScreens ~= #hs.screen.allScreens() or forceRelayout then
        cachedNumScreens = #hs.screen.allScreens()
        if #hs.screen.allScreens() == 2 then
            hs.layout.apply(doubleLayout, windowTitleComparator)
        elseif #hs.screen.allScreens() == 1 then
            hs.layout.apply(laptopLayout, windowTitleComparator)
        end
    end
end

-- local screenWatcher = hs.screen.watcher.new(onScreenChanged)
-- screenWatcher:start()

hs.hotkey.bind({'ctrl'}, 'f3', function() onScreenChanged(true) end)

hs.hotkey.bind({'cmd'}, 'f9', function()
    print('\n\n-- Applications --')
    hs.fnutils.each(hs.application.runningApplications(), function(app) print(app:title()) end)
    print('\n\n-- Window Titles --')
    hs.fnutils.each(hs.window.visibleWindows(), function(app) print(app:title()) end)
end)