Hammerspoon for fast windows switching

init.lua

-- Globals.

hs.loadSpoon("ReloadConfiguration")
spoon.ReloadConfiguration:start()

local log = hs.logger.new('hammerspoon', 'debug')


-- Key bindings.

hs.hotkey.bind({"cmd"}, "[", function()
    hs.appfinder.appFromName("Telegram"):activate()
end)

hs.hotkey.bind({"cmd"}, "p", function()
    hs.appfinder.appFromName("Slack"):activate()
end)

hs.hotkey.bind({"cmd"}, "b", function()
    hs.appfinder.appFromName("KeePassX"):activate()
end)

hs.hotkey.bind({"cmd"}, "q", function()
    hs.appfinder.appFromName("wolt-mail"):activate()
end)

hs.hotkey.bind({"cmd"}, "w", function()
    hs.appfinder.appFromName("pik4ez-mail"):activate()
end)

hs.hotkey.bind({"cmd"}, "e", function()
    hs.appfinder.appFromName("wolt-calendar"):activate()
end)

hs.hotkey.bind({"cmd"}, "m", function()
    hs.appfinder.appFromName("Google Chrome"):activate()
end)

hs.hotkey.bind({"cmd"}, "i", function()
    focusAppWindowByExactName("iTerm2", "terminal")
end)

hs.hotkey.bind({"cmd"}, "o", function()
    focusAppWindowByExactName("iTerm2", "nvim")
end)


-- Functions.

-- Focuses the window of the application appName with the winName.
--
-- Uses the exact match to find the window by name.
--
-- Limitations: in multi-monitor setups, works only
-- if 'Displays have separate Spaces' is turned off
-- in Mission Control settings.
function focusAppWindowByExactName(appName, winName)
    local app = hs.appfinder.appFromName(appName)
    if app == nil then
        hs.application.launchOrFocus(appName)
        return
    end

    local win = app:getWindow(winName)
    if win == nil then
        app:activate()
        return
    end

    win:focus()
end