local CONFIG_FILE = "slave.cfg"
local MODEM_SIDE = "bottom"

local config = {
  outputs = {
    straight = {},
    cross = {},
  },
  defaultState = "straight",
}

local function saveConfig()
  local h = fs.open(CONFIG_FILE, "w")
  h.write(textutils.serialize(config))
  h.close()
end

local function loadConfig()
  if not fs.exists(CONFIG_FILE) then
    saveConfig()
    return
  end
  local h = fs.open(CONFIG_FILE, "r")
  local raw = h.readAll()
  h.close()
  local t = textutils.unserialize(raw)
  if type(t) == "table" then config = t end
end

local function splitSides(text)
  local out = {}
  for part in string.gmatch((text or ""), "[^,%s]+") do
    if part ~= MODEM_SIDE then
      table.insert(out, part)
    end
  end
  return out
end

local function sideList(list)
  if not list or #list == 0 then return "(nincs)" end
  return table.concat(list, ",")
end

local function pulseTest(list)
  for _, side in ipairs({"top","left","right","front","back"}) do
    redstone.setOutput(side, false)
  end
  for _, side in ipairs(list) do
    redstone.setOutput(side, true)
  end
  sleep(1)
  for _, side in ipairs({"top","left","right","front","back"}) do
    redstone.setOutput(side, false)
  end
end

loadConfig()

while true do
  term.setBackgroundColor(colors.black)
  term.setTextColor(colors.white)
  term.clear()
  term.setCursorPos(1,1)
  print("SLAVE SETUP")
  print("===========")
  print("Computer ID: " .. os.getComputerID())
  print("Modem oldal: " .. MODEM_SIDE)
  print("Straight -> " .. sideList(config.outputs.straight))
  print("Cross    -> " .. sideList(config.outputs.cross))
  print("Default  -> " .. tostring(config.defaultState))
  print("")
  print("1 - Straight oldalak beallitasa")
  print("2 - Cross oldalak beallitasa")
  print("3 - Default allapot")
  print("4 - Straight teszt")
  print("5 - Cross teszt")
  print("6 - Mentes")
  print("7 - Kilepes")
  print("")
  write("> ")
  local cmd = read()

  if cmd == "1" then
    write("Straight oldalak (pl: top,left): ")
    config.outputs.straight = splitSides(read())
  elseif cmd == "2" then
    write("Cross oldalak (pl: right,back): ")
    config.outputs.cross = splitSides(read())
  elseif cmd == "3" then
    write("Default (straight/cross): ")
    local v = read()
    if v == "straight" or v == "cross" then config.defaultState = v end
  elseif cmd == "4" then
    pulseTest(config.outputs.straight)
  elseif cmd == "5" then
    pulseTest(config.outputs.cross)
  elseif cmd == "6" then
    saveConfig()
    print("Mentve.")
    sleep(1)
  elseif cmd == "7" then
    term.clear()
    term.setCursorPos(1,1)
    print("Kilepes")
    break
  end
end