[ai] refactorings

src/DirectoryNode.cpp

@@ -540,6 +540,10 @@ DirectoryNode *DirectoryNode::advanceToNextMP3(const String *currentGlobal)
 
 
 void DirectoryNode::streamDirectoryHTML(Print &out) const {
+#ifdef DEBUG 
+    Serial.printf("StreamDirectoryHTML name=%s numOfFiles=%i\n", name, mp3Files.size());
+#endif
+    
     if (name == "/") {
         out.println(F("<ul>"));
     }
@@ -550,7 +554,7 @@ void DirectoryNode::streamDirectoryHTML(Print &out) const {
         out.print(F("\"><b>"));
         out.print(name);
         out.println(F("</b></li>"));
-        delay(0);  // Yield to allow network stack to send buffered data
+        yield();  // Yield to allow network stack to send buffered data
     }
 
     for (size_t i = 0; i < mp3Files.size(); i++) {
@@ -559,10 +563,12 @@ void DirectoryNode::streamDirectoryHTML(Print &out) const {
         out.print(F("\">"));
         out.print(mp3Files[i]);
         out.println(F("</li>"));
-        
+#ifdef DEBUG        
+        Serial.printf("stream song: %s\n",mp3Files[i].c_str());
+#endif        
         // Yield every few items to allow the async web server to send buffered data
         if (i % 5 == 4) {
-            delay(1);
+            yield();
         }
     }
 
@@ -572,7 +578,7 @@ void DirectoryNode::streamDirectoryHTML(Print &out) const {
 
     if (name == "/") {
         out.println(F("</ul>"));
-        delay(0);  // Final yield before completing
+        yield();  // Final yield before completing
     }
 }