added hyprland layout switcher (#232)

* added hyprland layout switcher

* fixes after plugin checking

---------

Co-authored-by: Martin Goldhahn <martin@goldhahn.info>

hypr-layout-switcher/service.luau

@@ -0,0 +1,64 @@
+--!nonstrict
+
+local layouts = { "dwindle", "master", "monocle", "scrolling" }
+
+noctalia.setUpdateInterval(1000)
+
+local lastLayout = nil
+
+local function setLayoutCmd(layout)
+  local lua = string.format(
+    "local w = hl.get_active_special_workspace() or hl.get_active_workspace(); "
+      .. "if w then if w.special then hl.workspace_rule({workspace = tostring(w.name), layout = %q}) "
+      .. "else hl.workspace_rule({workspace = tostring(w.id), layout = %q}) end end",
+    layout, layout
+  )
+  return "hyprctl eval '" .. lua:gsub("'", "'\\''") .. "'"
+end
+
+local function poll()
+  if not noctalia.commandExists("hyprctl") then
+    return
+  end
+  noctalia.runAsync("hyprctl activeworkspace -j", function(result)
+    if result.exitCode ~= 0 then
+      return
+    end
+    local data = noctalia.json.decode(result.stdout)
+    if data == nil then
+      return
+    end
+    local layout = data.tiledLayout
+    if layout and layout ~= lastLayout then
+      lastLayout = layout
+      noctalia.state.set("layout", layout)
+    end
+  end)
+end
+
+local function cycle()
+  local idx = 1
+  for i, l in ipairs(layouts) do
+    if l == lastLayout then
+      idx = (i % #layouts) + 1
+      break
+    end
+  end
+  local nextLayout = layouts[idx]
+  noctalia.runAsync(setLayoutCmd(nextLayout))
+  lastLayout = nextLayout
+  noctalia.state.set("layout", nextLayout)
+end
+
+function onIpc(event)
+  if event == "cycle" then
+    cycle()
+  end
+end
+
+function update()
+  poll()
+end
+
+poll()
+