czat

term.clear()
term.setCursorPos(1,1)
rednet.open("back")
local host_id = os.computerID()
local uzyt = {}
local uzyt_size = 0
rednet.broadcast(host_id.." dolaczyl")
rednet.broadcast("test", "test")
print(host_id.." dolaczyl")
while true do
  param1, param2, param3, param4 = os.pullEvent()
  if param1 == "rednet_message" and param3 == "test" and param4 == "test" then
    rednet.send(param2, "T", "test")
    local istnieje = false
    for i=0,uzyt_size do
      if uzyt[i] == param2 then
        istnieje = true
        break
      end
    end
    if not istnieje then
      uzyt[uzyt_size] = param2
      uzyt_size = uzyt_size + 1
    end
  end
  if param1 == "rednet_message" and param3 == "T" and param4 == "test" then
    local istnieje = false
    for i=0,uzyt_size do
      if uzyt[i] == param2 then
        local istnieje = true
      end
    end
    if not istnieje then
      uzyt[uzyt_size] = param2
      uzyt_size = uzyt_size + 1
      print("Na czacie znajduje sie "..param2)
    end
  end
  if param1 == "rednet_message" then
    print(param2.."- "..param3)
  end
  if param1 == "key" then
    write("Twoja wiadomosc: ")
    local mes = read()
    if mes == "exit" then
      rednet.broadcast(host_id.." wyszedl")
      textutils.slowPrint("wychodze...")
      rednet.close("back")
      break
    elseif mes == "list" then
      write("Na czacie znajduja sie: ")
      for i=0,uzyt_size-1 do
        write(uzyt[i])
      end
      write("\n")
    else
      print(host_id.."- "..mes)
      rednet.broadcast(mes)
    end
  end
end