changed server response to return json success and error messsages

src/sketch_oct17esp.cpp

@@ -330,7 +330,7 @@ void handleNotFound()
 { // if the requested file or page doesn't exist, return a 404 not found error
   if (!handleFileRead(server.uri()))
   { // check if the file exists in the flash memory (SPIFFS), if so, send it
-    server.send(404, "text/plain", "404: File Not Found");
+    server.send(404, "application/json", "{\"status\":\"failed\",\"message\":\"File not found\"}");
   }
 }
 
@@ -725,12 +725,12 @@ void handleFileUpload()
       fsUploadFile.close(); // Close the file again
       Serial.print("handleFileUpload Size: ");
       Serial.println(upload.totalSize);
-      server.sendHeader("Location", "/success.html"); // Redirect the client to the success page
-      server.send(303);
+      // server.sendHeader("Location", "/success.html"); // Redirect the client to the success page
+      server.send(201, "application/json", "{\"status\":\"success\",\"message\":\"File created successfully\"}");
     }
     else
     {
-      server.send(500, "text/plain", "500: couldn't create file");
+      server.send(500, "application/json", "{\"status\":\"failed\",\"message\":\"Could not create file\"}");
     }
   }
 }