// custom.js
const recognition = new (window.SpeechRecognition || window.webkitSpeechRecognition)();
recognition.continuous = false;
recognition.lang = "en-US";

// Initialize chat box scrolling
function scrollChat() {
    const chatBox = document.getElementById("chatBox");
    if (chatBox) {
        chatBox.scrollTop = chatBox.scrollHeight;
    }
}

// Observe chat box changes for auto-scroll
const observer = new MutationObserver(scrollChat);
if (document.getElementById("chatBox")) {
    observer.observe(document.getElementById("chatBox"), {
        childList: true,
        subtree: true
    });
}

// Expose function to global scope
window.startListening = function() {
    const apiKey = document.querySelector("#apiKeyInput input")?.value;
    if (!apiKey) {
        alert("Please enter your OpenAI API key first!");
        return;
    }
    
    recognition.start();
    const micButton = document.getElementById("micButton");
    if (micButton) micButton.textContent = "🔴 Listening...";
}

recognition.onresult = (event) => {
    const transcript = event.results[0][0].transcript;
    const voiceInput = document.querySelector("#voiceInput input");
    if (voiceInput) {
        voiceInput.value = transcript;
        voiceInput.dispatchEvent(new Event("change"));
    }
};

recognition.onend = () => {
    const micButton = document.getElementById("micButton");
    if (micButton) micButton.textContent = "🎤 Speak";
};

recognition.onerror = (event) => {
    console.error("Speech recognition error", event.error);
    const micButton = document.getElementById("micButton");
    if (micButton) micButton.textContent = "🎤 Speak";
    alert("Speech recognition error: " + event.error);
};

// Initial scroll
setTimeout(scrollChat, 500);