Add updater.lua

updater.lua

@@ -0,0 +1,36 @@
+local CURRENT_CLIENT_VERSION = "0.0.0.3"
+local INSTALL_PATH = "/"
+
+function http_get(url)
+
+  local req = http.get(url)
+  local resp = req.readAll()
+  req.close()
+  return resp
+
+end
+
+print("Device Version: " .. CURRENT_CLIENT_VERSION)
+
+print("Fetching latest version...")
+local manifest = http_get("https://git.mcorangehq.xyz/xomf/slabOS/raw/branch/main/version.json")
+local manifest_json = textutils.unserialiseJSON(manifest)
+print("Latest: " .. manifest_json.version)
+if manifest_json.version ~= CURRENT_CLIENT_VERSION then
+  
+  print("Installing update...")
+
+  for path,url in pairs(manifest_json.sys_files) do
+    print("Writing " .. path)
+    local file = fs.open(INSTALL_PATH .. path, "w")
+    file.write( http_get(url) )
+    file.close()
+    print("Written.")
+  
+  end
+
+  print("Rebooting device in 5 seconds.")
+  sleep(5)
+  os.reboot()
+
+end