CC Cloud Server

--Made by Esbenmine
term.clear()
term.setCursorPos(1,1)
Start = true
UP = false
PP = false
rednet.open("top")
Start = function()
  id, x = rednet.receive()
  if x == "@Pass" then
    id, Uname = rednet.receive()
    id, Pass = rednet.receive()
     Check = LoginCheck(Uname, Pass)
     if Check == true then
       rednet.send(id, "@CP")
      print("User: ",Uname," logged in to Goggle Cloud")
     elseif Check == false then
      print("User: ",Uname," failed logging in to Goggle Cloud")
       rednet.send(id, "@WP")
     end
  elseif x == "@Upload" then
    id, Uname = rednet.receive()
    id, Pass = rednet.receive()
    id, File = rednet.receive()
    Login = LoginCheck(Uname, Pass)
    if Login == false then
      rednet.send(id, "@WP")
    else
      if fs.exists("/"..Uname.."/"..File.."") then
        rednet.send(id, "@File Exists")
      else
        rednet.send(id, "@StartUL")
        ID, Message = rednet.receive()
        if id == ID then
          if Message == "@File Exists" then
            id, FileLines = rednet.receive()
            if id == ID then
              file = fs.open("/"..Uname.."/"..File, "w")
              file.write(FileLines)
              file.close()
              print("User: ",Uname," uploaded ",File," to his Goggle Cloud")
            else
              rednet.send(id, "Nothing here")
            end
          elseif Message == "@CancelUL" then
          end
        else
          rednet.send(id, "You send a message to an wrong idea")
        end
      end
    end
  elseif x == "@Download" then
    ID, Uname = rednet.receive()
    ID2, Pass = rednet.receive()
    ID3, FileName = rednet.receive()
    if id == ID and ID2 == id and ID3 == id then
      Login = LoginCheck(Uname, Pass)
      if Login == true then
        rednet.send(id, true)
        if fs.exists("/"..Uname.."/"..FileName.."") then
          rednet.send(id, "@File exists")
          file = fs.open("/"..Uname.."/"..FileName.." ","r")
          Lines = file.readAll()
          rednet.send(id, Lines)
          print("User: ",Uname," downloaded ",FileName," from his Goggle Cloud")
          file.close()
        else
          rednet.send(id, "@File do not exists")
        end
      elseif Login == false then
        rednet.send(id, false)
      end
    else
      rednet.send(ID, "Wrong ID")
    end
  elseif x == "@List" then
    ID, Uname = rednet.receive()
    ID2, Pass = rednet.receive()
    if id == ID and id == ID2 then
      Login = LoginCheck(Uname, Pass)
      if Login == true then
        rednet.send(id, true)
        files = fs.list("/"..Uname.."/")
        rednet.send(id, files)
      elseif Login == false then
        rednet.send(id, false)
      end
    end
  elseif x == "@Delete" then
    ID, Uname = rednet.receive()
    ID2, Pass = rednet.receive()
    if id == ID and id == ID2 then
      Login = LoginCheck(Uname,Pass)
      if Login == true then
        rednet.send(ID, true)
        ID, FileName = rednet.receive()
        if id == ID then
          if fs.exists("/"..Uname.."/"..FileName.." ") then
            rednet.send(ID, true)
            fs.delete("/"..Uname.."/"..FileName.." ")
          else
            rednet.send(ID, false)
          end
        else
          rednet.send(ID, "Wrong ID")
        end
      elseif Login == false then
        rednet.send(ID, false)
      end
    else
      rednet.send(ID, "Wrong ID")
    end
  else
    rednet.send(id, "Wrong ID")
  end
end

LoginCheck = function(Username, Password)
  file = fs.open("/Users/"..Username,"r")
     if file then
       if Password == file.readLine() then
         return true
       else
         return false
       end
     else
       return false
    end
     file.close()
end
repeat
  Start()
until Start == false