Hammerspoon input method auto switch

init.lua

local function Chinese()
  -- hs.keycodes.currentSourceID("com.sogou.inputmethod.sogou.pinyin")
  hs.keycodes.currentSourceID("com.apple.inputmethod.SCIM.ITABC")
end

local function English()
  hs.keycodes.currentSourceID("com.apple.keylayout.ABC")
end

local targetApps = {
  '微信',
  'Notion',
}

function updateFocusAppInputMethod()
  local focusApp = hs.application.frontmostApplication():name()
  for i, app in ipairs(targetApps) do
      if focusApp == app then
          Chinese()
          return
      end
  end
  English()

end

hs.hotkey.bind({'ctrl', 'alt','cmd'}, ".", function()
  hs.alert.show("App path:        "
  ..hs.application.frontmostApplication():path()
  .."\n"
  .."App name:      "
  ..hs.application.frontmostApplication():name()
  .."\n"
  .."IM source id:  "
  ..hs.keycodes.currentSourceID())
end)

function applicationWatcher(appName, eventType, appObject)
  if (eventType == hs.application.watcher.activated) then
      updateFocusAppInputMethod()
  end
end

appWatcher = hs.application.watcher.new(applicationWatcher)
appWatcher:start()