PeerChat (WIP)

local peerChatGraphic = "##########################\n#        Peer Chat       #\n##########################"

peerchat = {
  logo = function()
    write(peerChatGraphic)
  end,

  init = function()
    term.clear()
    rednet.open("back")
    rednet.host("PeerChat","Peer"..os.getComputerID())
    term.setCursorPos(1,1)
    peerchat.logo()
  end,

  printNearby = function()
    local nearby = {rednet.lookup("PeerChat")}
    for i,v in ipairs(nearby) do
      write(v..", ")
    end
  end,

  send = function(message)
    rednet.broadcast(message, "PeerChat")
    print(os.getComputerID().."> "..message)
  end,

  sendStuff = function()
    local event, param1 = os.pullEvent("char")
    if param1 == "t" then
      local oldX, oldY = term.getCursorPos()
      local x,y = term.getSize()
      term.setCursorPos(1,y)
      local message = read()
      term.setCursorPos(1,oldY)
      peerchat.send(message)
    end
  end,

  get = function()
    local id, message = rednet.receive("PeerChat")
    local oldX, oldY = term.getCursorPos()
    if message ~= nil then
      print(tostring(id).."> "..message)
    end
    term.setCursorPos(oldX,oldY)
  end,

  finish = function()
    rednet.unhost("PeerChat","Peer"..os.getComputerID())
  end,

  mainLoop = function()
    while true do
      parallel.waitForAny(peerchat.get, peerchat.sendStuff)
    end
  end
}

peerchat.init()
print("Press 'T' to talk!")
print("Your ID: "..os.getComputerID())
print("Currently connected peers:")
peerchat.printNearby()
print("")
peerchat.mainLoop()