Improve webserver

src/webserver.h

@@ -28,11 +28,6 @@ namespace {
                     <input type="text" name="text">
                 </div>
 
-                <div>
-                    <label for="bright">Bright mode</label>
-                    <input type="checkbox" name="bright">
-                </div>
-
                 <div>
                     <button>Send</button>
                 </div>
@@ -45,7 +40,14 @@ namespace {
     }
 
     void handleFormSend() {
-        sendTextToSign("HELLO FORM");
+        String text = webServer.arg("text");
+
+        if (text.isEmpty()) {
+            webServer.send(404, "text/plain", "empty text");
+            return;
+        }
+
+        sendTextToSign(text);
 
         // redirect back to root page
         webServer.sendHeader("Location", "/");
@@ -54,7 +56,14 @@ namespace {
 
     // RESTful API endpoint -- returns a proper status code rather than a redirect
     void handleApiSend() {
-        sendTextToSign("HELLO API");
+        String text = webServer.arg("text");
+
+        if (text.isEmpty()) {
+            webServer.send(404, "text/plain", "empty text");
+            return;
+        }
+
+        sendTextToSign(text);
         webServer.send(200, "text/plain", "ok");
     }
 }