implement function to collect keystrokes

lua/macrotool/init.lua

@@ -1,7 +1,7 @@
 local M = {}
 local api = vim.api
 
-local
+local keystrokes = {}
 
 -- Only for debugging
 if vim == nil then
@@ -9,5 +9,21 @@ if vim == nil then
 end
 
 function Macrochain()
-	vim.print("Hello World!")
+	vim.print(table.concat(keystrokes, ""))
 end
+
+-- @name record_keystroke
+-- @param mapped_key
+-- @param raw_key
+-- @short Add mapped_key to keystrokes
+local function record_keystroke(mapped_key, raw_key)
+	table.insert(keystrokes, mapped_key)
+	if #keystrokes > 60 then
+		local temp_keystrokes = {}
+		for i = 31, #keystrokes do
+			table.insert(temp_keystrokes, keystrokes[i])
+		end
+		keystrokes = temp_keystrokes
+	end
+end
+vim.on_key(record_keystroke)