function handleUserQuery()

in static/js/chat.js [257:342]
46 lines of code
5 McCabe index (conditional complexity)

function handleUserQuery(userQuery, userQueryHTML, imgUrlPath) {
    let contentMessage = userQuery;
    if (imgUrlPath.trim()) {
         contentMessage = [
             { type: "text", text: userQuery },
             { type: "image_url", image_url: { url: imgUrlPath } }
         ];
    }
    let chatMessage = { role: 'user', content: contentMessage };
    messages.push(chatMessage);
    
    let chatHistoryTextArea = document.getElementById('chatHistory');
    chatHistoryTextArea.innerHTML += "<br/><br/>User: " + userQuery + "<br/>";
    chatHistoryTextArea.scrollTop = chatHistoryTextArea.scrollHeight;
    
    if (isSpeaking) { stopSpeaking(); }
    
    // Use the stored conversationId (empty string on first call)
    let payload = JSON.stringify({
         spokenText: userQuery,
         conversation_id: conversationId
    });
    
    let assistantReply = "";
    let spokenSentence = "";
    let displaySentence = "";
    
    fetch("/speak", {
         method: "POST",
         headers: { "Content-Type": "application/json" },
         body: payload
    })
    .then(response => {
         if (!response.ok) {
             throw new Error(`Chat API response status: ${response.status} ${response.statusText}`);
         }
         chatHistoryTextArea.innerHTML += "Assistant: ";
         const reader = response.body.getReader();
         function read() {
           return reader.read().then(({ value, done }) => {
             if (done) return;
             let chunk = new TextDecoder().decode(value, { stream: true });
             
             // Check if the first 36 characters form a valid UUID.
             if (chunk.length >= 37) {
               let possibleId = chunk.substring(0, 36);
               // Simple regex for UUID validation.
               const uuidRegex = /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i;
               if (uuidRegex.test(possibleId)) {
                 // Store/update the conversationId and remove it from the chunk.
                 conversationId = possibleId;
                 console.log("Conversation ID: [", conversationId, "]");
                 chunk = chunk.substring(37);
               }
             }
             
             assistantReply += chunk;
             displaySentence += chunk;
             spokenSentence += chunk;
             
             if (chunk.trim() === "" || chunk.trim() === "\n") {
               console.log("Speak Chunk: [", spokenSentence.trim(), "]");
               speak(spokenSentence.trim());
               spokenSentence = "";
             }
             
             chatHistoryTextArea.innerHTML += displaySentence;
             chatHistoryTextArea.scrollTop = chatHistoryTextArea.scrollHeight;
             displaySentence = "";
             return read();
           });
         }
         return read();
    })
    .then(() => {
         if (spokenSentence !== "") {
             speak(spokenSentence.trim());
             spokenSentence = "";
         }
         let assistantMessage = { role: 'assistant', content: assistantReply };
         messages.push(assistantMessage);
    })
    .catch(error => {
         console.error("Error in handleUserQuery:", error);
    });
}