HouseCloud

-- HouseCloud
-- Made by houseofkraft
-- Contributions by matimati433
local sides = rs.getSides()
local args = { ... }
local loggedIn = false

-- Functions
local function modemFound()
  local modemFound, side
  modemFound = false
  for _,v in pairs(sides) do
    if peripheral.getType(v) == "modem" then
      modemFound = true
      side = v
    end
  end
  if modemFound then
    return modemFound, side
  else
    return modemFound
  end
end


if #args < 1 then
  -- Show usages
  printError("Usages:")
  printError("housecloud register <user>")
  printError("housecloud login <user>")
  printError("housecloud download")
  printError("housecloud upload")
  printError("housecloud logout")
  printError("For the login and register, you will be asked for a password.")
  error()
end

-- Modem checker
local found, side = modemFound()
if found then
  rednet.open(side)
else
  printError("No modems detected!")
  error()
end

if args[1] == "register" then
  write("Password: ")
  pass = read("*")
  print("Registering Account...")
  info = {args[2], pass}
  rednet.broadcast("register", info)
  id, message = rednet.receive(1)
  if message == "sucessful" then
    print("Sucessful!")
  elseif message == "userexists" then
    print("Error: User Exists!")
  else
    print("No response, There may be no servers nearby.")
  end
elseif args[1] == "login" then
  write("Password: ")
  pass = read("*")
  print("Logging in...")
  info = {args[2], pass}
  rednet.broadcast("login", info)
  id, message = rednet.receive(1)
  if message == "sucessful" then
    print("Sucessful!")
    file = fs.open(".login", "w")
    file.writeLine(args[2])
    file.writeLine(pass)
    file.close()
  elseif message == "usernoexist" then
       print("Error: The user does not exist!")
  elseif message == "passwrong" then
       print("Error: Password Wrong!")
    else
       print("No reponse, There may be no servers nearby.")
    end
elseif args[1] == "download" then
  if fs.exists(".login") then
    file = fs.open(".login", "r")
    user = file.readLine()
    pass = file.readLine()
    file.close()
    print("Downloading...")
    info = {user, pass}
    rednet.broadcast("download", info)
    fs.makeDir("cloud")
    while true do
      id, message, info = rednet.receive()
      if message == "recieve" then
        file = fs.open(fs.combine("cloud", info[1]), "w")
        file.write(info[2])
      elseif message == "stop" then
        file.close()
        break
      elseif message == "badauth" then
        print("Invaild Session, Try re-logging")
        break
      end
    end
  else
    printError("You are not logged in!")
  end
elseif args[1] == "upload" then
   if fs.exists(".login") then
     tmp = fs.open(".login", "r")
     local user = tmp.readLine()
     local pass = tmp.readLine()
     tmp.close()
     local files = fs.list("/cloud/")
     info = {user, pass}
     rednet.broadcast("send-start", info)
     for k,v in pairs(files) do
       fi = fs.open(fs.combine("cloud", v), "r")
       local content = fi.readAll()
       fi.close()
       info = {v, content}
       rednet.broadcast("send", info)
     end
     rednet.broadcast("send-stop")
     print("Done!")
   else
     printError("You are not logged in!")
   end
elseif args[1] == "logout" then
    if fs.exists(".login") == false then
      printError("You are not logged in!")
      error()
    else
      fs.delete(".login")
      print("Successfully Logged out.")
    end
end