local component = require("component")
local colors = require("colors")
local sides = require("sides")
local rs = component.redstone

local messages = {
  ["lights"] = {
    --Syntax: ["keyword"] = {function, all, other, arguments}
    ["on"] = {rs.setBundledOutput, sides.back, colors.cyan, 15},
    ["off"] = {rs.setBundledOutput, sides.back, colors.cyan, 0}
  },
  ["door"] = {
    ["open"] = {rs.setBundledOutput, sides.back, colors.magenta, 15},
    ["close"] = {rs.setBundledOutput, sides.back, colors.magenta, 0}
  }
}

local function getFunction(tbl, msg)
  if tbl[1] and type(tbl[1]) ~= "table" then
    return j
  end
  for i,j in pairs(tbl) do
    if type(i) == "string" then
      if msg:find(i) and type(j) == "table" then
        return getFunction(j, msg)
      end
    end
  end
end

local function parseMessage(msg)
  local fnc = getFunction(messages, msg)
  if not fnc then return false, "no command found" end
  return pcall(table.unpack(fnc))
end

local testmsg = "Please turn the lights on"
local result, response = parseMessage(testmsg)
print(result)
print(response)