[Q] How do I move the focus to the next/previous space?

[NightMachinery]

I want to be able to do the above using Hammerspoon. I took a look at Hammerspoon docs: hs.spaces, but I couldn't find a way to get ID of the "left"/"right" spaces.

[avegetablechicken]

local function getUserSpaces()
  local user_spaces = {}
  for _, screen in ipairs(hs.screen.allScreens()) do
    local spaces = hs.spaces.spacesForScreen(screen) or {}
    for _, space in ipairs(spaces) do
      if hs.spaces.spaceType(space) == "user" then
        table.insert(user_spaces, space)
      end
    end
  end
  return user_spaces
end

local function checkAndMoveWindowToSpace(space)
  local user_spaces = getUserSpaces()
  local nspaces = #user_spaces
  if nspaces > 1 then
    local curSpaceID = hs.spaces.focusedSpace()
    local index = hs.fnutils.indexOf(user_spaces, curSpaceID)
    local targetIdx = space == "r" and index + 1 or index - 1
    if 1 <= targetIdx and targetIdx <= nspaces then
      local win = hs.window.focusedWindow()
      hs.spaces.moveWindowToSpace(win, user_spaces[targetIdx])
      hs.spaces.gotoSpace(user_spaces[targetIdx])
      local screenUUID = hs.spaces.spaceDisplay(user_spaces[targetIdx])
      if win:screen():getUUID() ~= screenUUID then
        focusScreen(hs.screen.find(screenUUID))
      end
      win:focus()
    end
  else
    hs.alert.show("Only ONE User Space")
  end
end

My configuration to move focused window to each adjacent space. I get ID of the "left"/"right" spaces by travesing.