diff --git a/src/RubberNugget/RubberNugget.ino b/src/RubberNugget/RubberNugget.ino
index 8fd13db..cd4c41f 100644
--- a/src/RubberNugget/RubberNugget.ino
+++ b/src/RubberNugget/RubberNugget.ino
@@ -23,178 +23,87 @@ const char *ssid = "Nugget AP";
 const char *password = "nugget123";
 
 WebServer server(80);
+DNSServer dns;
 
 TaskHandle_t webapp;
 TaskHandle_t nuggweb;
 
-void getPayloads()
-{
-  String *payloadPaths = RubberNugget::allPayloadPaths();
+void getPayloads() {
+  String* payloadPaths = RubberNugget::allPayloadPaths();
   Serial.printf("[SERVER][getPayloads] %s\n", payloadPaths->c_str());
   server.send(200, "text/plain", *payloadPaths);
 }
 
-void handleRoot()
-{
+void handleRoot() {
   Serial.println("handling root!");
   server.send(200, "text/html", String(INDEX));
 }
 
-void delpayload()
-{
+void delpayload() {
   String path(server.arg("path"));
   FRESULT res = f_unlink(path.c_str());
-  if (res == FR_OK)
-  {
+  if (res == FR_OK){
     server.send(200);
-  }
-  else
-  {
+  } else {
     server.send(500);
   }
 }
 
-void websave()
-{
-  // path should be corrected, i.e. by index.html's pathCorrector function
-  // Each path should start with '/' and not end with '/'
-  String path = (server.arg("path"));
-  const char *constPath = path.c_str();
-
-  // construct directories as needed
-  FILINFO filinfo;
-  int pathSoFarIdx = 1;
-  while (true)
-  {
-    int nextDir = path.indexOf("/", pathSoFarIdx);
-    if (nextDir == -1)
-    {
-      break;
-    }
-    String pathSoFar = path.substring(0, nextDir);
-    if (FR_OK != f_stat(pathSoFar.c_str(), &filinfo))
-    {
-      if (f_mkdir(pathSoFar.c_str()) != FR_OK)
-      {
-        server.send(500, "text/plain", "Could not create directory");
-        return;
-      }
-    }
-    pathSoFarIdx = nextDir + 1;
-  }
-
-  // Create file
-  FIL file;
-  if (FR_OK != f_open(&file, constPath, FA_WRITE | FA_CREATE_ALWAYS))
-  {
-    server.send(500, "text/plain", "Could not open file for writing");
+void websave() {
+  fileOp decodeOp = base64Decode(server.arg("payloadText"));
+  if (!decodeOp.ok){
+    server.send(500, "text/plain", decodeOp.result);
     return;
   }
-
-  // Write to file
-  String content = (server.arg("payloadText"));
-  content.replace(" ", "/"); // why
-  const char *contentBase64 = content.c_str();
-  size_t payloadLength = BASE64::decodeLength(contentBase64);
-  uint8_t payloadContent[payloadLength];
-  BASE64::decode(contentBase64, payloadContent);
-  UINT written = 0;
-  if (FR_OK != f_write(&file, payloadContent, payloadLength, &written))
-  {
-    server.send(500, "text/plain", "Could not write to file");
-    f_close(&file);
+  fileOp saveOp = saveFile(server.arg("path"), decodeOp.result);
+  if (!saveOp.ok){
+    server.send(500, "text/plain", saveOp.result);
     return;
   }
-  f_close(&file);
-  server.send(200, "text/plain", "Payload created successfully");
-}
-
-// decode base64 and run
-void webrunlive()
-{
-  server.send(200, "text/plain", "Running payload...");
-  if (server.hasArg("plain"))
-  {
-    Serial.print("Decoding: ");
-    String decoded = (server.arg("plain"));
-    char tab2[decoded.length() + 1];
-    strcpy(tab2, decoded.c_str());
-
-    for (int i = 0; i < decoded.length(); i++)
-    {
-      Serial.print(tab2[i]);
-    }
-
-    Serial.println();
-    Serial.println(decoded.length());
-    Serial.println("-------");
-
-    uint8_t raw[BASE64::decodeLength(tab2)];
-    Serial.println(BASE64::decodeLength(tab2));
-    BASE64::decode(tab2, raw);
-
-    String meow = (char *)raw;
-    meow = meow.substring(0, (int)BASE64::decodeLength(tab2));
-    RubberNugget::runLivePayload(meow);
-    Serial.println();
-    Serial.println("-------");
-  }
+  server.send(200, "text/plain", "payload saved successfully");
 }
 
-void webget()
-{
-  FRESULT fr;
-  FIL file;
-  uint16_t size;
-  UINT bytesRead;
-
+void webget() {
   String path = server.arg("path");
-  fr = f_open(&file, path.c_str(), FA_READ);
-
-  if (fr != FR_OK)
-  {
-    // TODO: most likely file not found, but we need to check why fr != OK.
-    // Marking 500 until resolved
-    server.send(500, "plain/text", String("Error loading script"));
+  fileOp op = readFile(path);
+  if (!op.ok) {
+    // TODO: send 500/4XX depending on file existence vs internal error
+    server.send(500, "text/plain", String("error getting payload: ") + op.result);
     return;
   }
-
-  size = f_size(&file);
-  char *data = NULL;
-
-  data = (char *)malloc(size);
-
-  fr = f_read(&file, data, (UINT)size, &bytesRead);
-  if (fr == FR_OK)
-  {
-    String payload = String(data);
-    payload = payload.substring(0, bytesRead);
-    payload = base64::encode(payload);
-    server.send(200, "plain/text", payload);
-  }
-  else
-  {
-    server.send(500, "plain/text", String("Error reading script"));
-  }
-  f_close(&file);
+  String payload = base64::encode(op.result);
+  server.send(200, "text/plain", payload);
 }
 
 NuggetInterface* nuggetInterface;
 
 // run payload with get request path
-void webrun()
-{
-  server.send(200, "text/html", "Running payload...");
-  String path = server.arg("path");
-  RubberNugget::runPayload(path.c_str(), 1); // provide parameter triggered from webpage
+void webrun() {
+  fileOp op = readFile(server.arg("path"));
+  if (op.ok) {
+    server.send(200, "text/html", "Running payload...");
+    NuggetScreen* runner = new ScriptRunnerScreen(op.result);
+    bool ok = nuggetInterface->injectScreen(runner);
+    return;
+  }
+  server.send(500, "text/html", "couldn't run payload: " + op.result);
 }
 
- DNSServer dns;
+void webrunlive() {
+  // TODO: use server.arg "content" or "payload" instead of "plain"
+  fileOp op = base64Decode(server.arg("plain"));
+  if (op.ok) {
+    server.send(200, "text/plain", "running live payload");
+    NuggetScreen* runner = new ScriptRunnerScreen(op.result);
+    bool ok = nuggetInterface->injectScreen(runner);
+    // TODO: send 503 when device is busy
+    return;
+  }
+  server.send(500, "text/html", "Device busy");
+}
 
-void webserverInit(void *p)
-{
-  while (1)
-  {
+void webserverInit(void *p) {
+  while (1) {
     dns.processNextRequest();
     server.handleClient();
     vTaskDelay(2);
@@ -204,42 +113,31 @@ void webserverInit(void *p)
 extern String netPassword;
 extern String networkName;
 
-
-
-void setup()
-{
-  pinMode(12, OUTPUT);
-  strip.begin();
-  delay(500);
-
+void setup() {
   Serial.begin(115200);
 
   RubberNugget::init();
-
-  if (networkName.length() > 0)
-  {
+ 
+  if (networkName.length() >0) {
     Serial.println(networkName);
-    const char *c = networkName.c_str();
-    ssid = c;
+    const char * c = networkName.c_str();
+    ssid=c;
   }
-  if (netPassword.length() >= 8)
-  {
+  if (netPassword.length() >=8) {
     Serial.println(netPassword);
-    const char *d = netPassword.c_str();
-    password = d;
+    const char * d = netPassword.c_str();
+    password=d;
   }
 
   WiFi.softAP(ssid, password);
-  // }
   IPAddress myIP = WiFi.softAPIP();
   Serial.print("AP IP address: ");
   Serial.println(myIP);
 
-
   dns.setErrorReplyCode(DNSReplyCode::NoError);
   dns.start(53, "*", myIP);
 
-  MDNS.begin("usb.nugg");
+  MDNS.begin("usb.nugget");
   Serial.println("mDNS responder started");
 
   server.on("/", handleRoot);
@@ -253,12 +151,6 @@ void setup()
   server.begin();
 
   MDNS.addService("http", "tcp", 80);
-  strip.clear();
-  strip.setPixelColor(0, strip.Color(0, 0, 0));
-  strip.show();
-  strip.show();
-
-  // initialize & launch payload selector
 
   xTaskCreate(webserverInit, "webapptask", 12 * 1024, NULL, 5, &webapp); // create task priority 1
   nuggetInterface = new NuggetInterface;