local ws = require("websocket_client");
local event = require("event");
local computer = require("computer");
local os = require("os");
local io = require("io");
local cl;

local ip, port = "192.168.0.69", 8080;

local function save(message)
  print("Saving File.");
  local fileName, content = message:match("(%S+) (.+)");
  local file = io.open(fileName, "w");
  file:write(content);
  file:close();
end

local function sync(message)
  print("Syncing File.");
  local filename = message;
  local file = io.open(filename, "r");
  local content = "";
  while true do
    if (not file) then break end
    local buffer = file:read(128);
    if (not buffer) then break end
    content = content .. buffer;
  end
  cl:send(content)
end

local ops = {save=save, sync=sync}
local function onMessage(e, msg)
  if (e == "close_request") then os.exit() end
  local op, msg = msg:match("(%S+) (.+)");
  ops[op](msg);
end

cl = ws.create(onMessage, true);

cl:connect(ip, port, "/", false);
os.sleep(0.5);
cl:send(computer.address());

while true do
  local e = {event.pull()};
  if (e[1] == "interrupted") then break end
end

cl:disconnect();