client

local file = fs.open(".server", "r")

if file == nil then
   print("No server configured")
   return
end

local server = tonumber(file.readLine())
file.close()

local sid
local user = "Guest"
local modem = peripheral.find("modem")
local event, side, sChannel, id, data, dist
local _id = os.getComputerID()
local admin = false

local function idRNG()
   modem.close(_id)
   _id = math.random(50000, 55000)
   modem.open(_id)
end

local function receive()
   event, side, sChannel, id, data, dist = os.pullEvent("modem_message")
end

local function send(to, msg)
   idRNG()
   modem.transmit(to, _id, msg)
   receive()
end

local function addmoney(usr, amt)
   send(server,"add")
   send(id,sid..":"..usr..":"..amt)
end

local function remusr(usr)
   send(server,"delete")
   send(id,sid..":"..usr)
end

local function chmod(usr,bool)
   send(server,"chmod")
   send(id,sid..":"..usr..":"..bool)
end

local function PClick()
   local evnt, button, x, y = os.pullEvent("mouse_click")
   local A = x
   local B = y
   local C = button
   return A, B, C
end

local function start()
   while true do
      term.setBackgroundColor(8)
      term.setTextColor(16)
      term.clear()
      term.setCursorPos(1, 1)
      print("Welcome, " .. user)
      if sid ~= nil then
         term.setCursorPos(3, 4)
         print("[Logout]")
         term.setCursorPos(3, 6)
         print("[Balance]")
         term.setCursorPos(3, 8)
         print("[Transfer]")
         if admin then
            term.setCursorPos(3, 10)
            print("[R/A $]")
            term.setCursorPos(3,12)
            print("[Remove User]")
            term.setCursorPos(3,14)
            print("[Change User Status]")
            x, y, button = PClick()
            if button == 1 and x >= 3 and x <= 9 and y == 10 then
               term.setBackgroundColor(8)
               term.setTextColor(16)
               term.clear()
               term.setCursorPos(1, 1)
               print("Welcome, " .. user)
               term.setCursorPos(3, 4)
               write("User: ")
               USR = read()
               term.setCursorPos(3, 5)
               write("Amount: $")
               ammt = read()
               addmoney(USR,ammt)
            elseif button == 1 and x >= 3 and x <= 15 and y == 12 then
               term.setBackgroundColor(8)
               term.setTextColor(16)
               term.clear()
               term.setCursorPos(1, 1)
               print("Welcome, " .. user)
               term.setCursorPos(3, 4)
               write("User: ")
               USR = read()
               remusr(USR)
            elseif button == 1 and x >= 3 and x <= 22 and y == 14 then
               term.setBackgroundColor(8)
               term.setTextColor(16)
               term.clear()
               term.setCursorPos(1, 1)
               print("Welcome, " .. user)
               term.setCursorPos(3, 4)
               write("User: ")
               USR = read()
               term.setCursorPos(3, 5)
               write("Admin (true/false): ")
               BOOL = read()
               chmod(USR,BOOL)
            end
         end
      else
         term.setCursorPos(3, 4)
         print("[Login]")
         term.setCursorPos(3, 6)
         print("[Create Account]")
      end
      event, button, x, y = os.pullEvent("mouse_click")
      if x >= 3 and x <= 10 and y == 4 and sid == nil then
         send(server, "login")
         term.clear()
         term.setCursorPos(3, 4)
         write("User: ")
         user = read()
         term.setCursorPos(3, 5)
         write("Pass: ")
         pass = read("*")
         send(id, user .. ":" .. pass)
          if data:find("Login Successful") and data:find(":") then
            if data:find(":", data:find(":") + 1) then
               admin = true
               local c1 = data:find(":")
               local c2 = data:find(":", c1 + 1)
               sid = data:sub(c1 + 1, c2 - 1)
            else
               admin = false
               sid = data:sub(data:find(":") + 1)
            end
            print(data:sub(0, data:find(":") - 1))
         else
            user = "Guest"
            print(data)
         end
         term.setCursorPos(3, 2)
         sleep(1)
      elseif x >= 3 and x <= 10 and y == 4 and sid ~= nil then
         user = "Guest"
         send(server, "logout")
         send(id, sid)
         sid = nil
         print(data)
         sleep(1)
      elseif x >= 3 and x <= 11 and y == 6 and sid ~= nil then
         send(server, "balance")
         send(id, sid)
         term.clear()
         term.setCursorPos(1, 1)
         print("Balance is $" .. data)
         os.pullEvent("mouse_click")
      elseif x >= 3 and x <= 12 and y == 8 and sid ~= nil then
         send(server, "transfer")
         term.clear()
         term.setCursorPos(3, 4)
         write("Amount: $")
         amt = read()
         term.setCursorPos(3, 6)
         write("To User: ")
         user2 = read()
         send(id, sid .. ":" .. user2 .. ":" .. amt)
         term.setCursorPos(3, 2)
         print(data)
         os.pullEvent("mouse_click")
      elseif x >= 3 and x <= 18 and y == 6 and sid == nil then
         term.clear()
         term.setCursorPos(3, 4)
         write("Username: ")
         user = read()
         term.clear()
         term.setCursorPos(3, 4)
         write("Password: ")
         pass = read("*")
         term.clear()
         send(server, "create")
         send(id, user .. ":" .. pass)
         user = "Guest"
         term.setCursorPos(3, 4)
         print(data)
         os.pullEvent("mouse_click")
      end
   end
end

start()