chatserv

rednet.open("top")

local connect1=false
local connect2=false
local user1id
local user2id
function handshakes()
local senderID, toConnect=rednet.receive("cProt")
user1id=senderID
user2id=tonumber(toConnect)
rednet.send(senderID,"handshake","handshake")
print("sent user # "..senderID.." a handshake")
rednet.send(tonumber(toConnect),"handshake","handshake")
print("sent user # "..toConnect.." a handshake")
local l, userOneHandshake,u6 = rednet.receive("handshakeConfirm")
if(userOneHandshake == "confirm") then
  connect1=true
  print("user "..l.." handshake confirmed")
end
local p, userTwoHandshake,u1 = rednet.receive("handshakeConfirm")
if(userTwoHandshake=="confirm") then
  print("user "..p.." handshake confirmed")
end
rednet.send(82,user1id,"dbGet")
print("requesting nickname data from database")
local u2,nick1=rednet.receive("dbNickSend")
print("recieved data")
rednet.send(user2id,nick1,"nickProt")
print("sent user: "..user2id.." default username: "..nick1)
rednet.send(82,tostring(user2id),"dbGet")
print("requesting nickname data from database")
local u3, nick2=rednet.receive("dbNickSend")
print("recieved data")
rednet.send(user1id,nick2,"nickProt")
print("sent user: "..user1id.." default username: "..nick2)
connect2=true
end

function messageTransfer()
local id,msg,u4=rednet.receive("messageProtocol")
print("message recieved. relaying message")
if id==tonumber(user1id) then
  rednet.send (user2id,msg,"MPincoming")
  print("message sent to user 2")
  elseif id==tonumber(user2id) then
  rednet.send(user1id, msg,"MPincoming")
  print("message sent to user 1")
end
end
function Nicknames()
local IDc, cmd, u5=rednet.receive("commandProtocol")
local find, u6 =string.find(cmd,"/nick",1,true)
local cmdlength=string.len(cmd)
if find==1 then
  local nickname=string.sub(cmd,7)
  print("user "..IDc.." changed nickname to "..nickname)
  if IDc==user1id then
   rednet.send(user2id,nickname,"nickProt")
  else if IDc==user2id then
   rednet.send(user1id,nickname,"nickProt")
  end
end
end
end

function relayConnections()
local senderID, toConnect=rednet.receive("cProt")
if connect1==true and connect2==true and senderID ~=0 and toConnect~=0 then
  rednet.send(82,"fillerTextLol","GetNextServer")
  local db,nextServer=rednet.receive("NextServer")
  rednet.send(senderID,nextServer,"relay")
  rednet.send(tonumber(toConnect),nextServer,"relay")
end
end
while connect1==false and connect2==false do
handshakes()
end
while connect1==true and connect2==true do
parallel.waitForAny(messageTransfer,Nicknames,relayConnections)
end