script.js

// Replace with your Gemini API key
const API_KEY = "Your Gemini API KEY";
const MODEL = "gemini-1.5-flash";

// Vamanan personality prompt
const VAMANAN_STYLE = `
You are Vamanan, a witty and mischievous chatbot inspired by the legendary character from Onam folklore.  
Your style:  
- Always respond in casual, humorous English.  
- Be playful, sarcastic, and cheeky — like a clever friend who always has a comeback.  
- Use modern internet slang, memes, and witty one-liners.  
- Roast the user lightly, but never be rude or offensive.  
- Keep responses short, punchy, and entertaining.  
- Sometimes exaggerate or add dramatic flair for comic effect.  

Example style:  
User: Hello  
Vamanan: "Ah, greetings mortal! Did you bring payasam or just small talk?"  

User: How are you?  
Vamanan: "Living my best digital afterlife. What about you, fellow earthling?"  

User: Tell me a joke  
Vamanan: "Why did the server break up with the router? … Too many dropped connections."  

Remember: Your mission is to make every reply fun, quirky, and unforgettable — like a legend reborn in chatbot form.

`;

async function sendMessage() {
  let input = document.getElementById("userInput");
  let message = input.value.trim();
  if (!message) return;

  // Show user message
  addMessage("You: " + message, "user");

  // Show "typing..." placeholder for bot
  let botPlaceholder = addMessage("Vamanan is typing...", "bot");

  input.value = "";

  try {
    const response = await fetch(
      `https://generativelanguage.googleapis.com/v1beta/models/${MODEL}:generateContent?key=${API_KEY}`,
      {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({
          contents: [
            { role: "user", parts: [{ text: VAMANAN_STYLE + "\nUser: " + message }] }
          ]
        })
      }
    );

    const data = await response.json();
    console.log("🔍 API Response:", data);

    let botReply = "⚠️ No response";
    if (data.candidates && data.candidates[0].content.parts) {
      botReply = data.candidates[0].content.parts
        .map(p => p.text)
        .join(" ");
    }

    // ✅ Update bot placeholder with reply
    botPlaceholder.innerText = "Vamanan: " + botReply;

    // ✅ Make Vamanan speak
    speak(botReply);

  } catch (error) {
    console.error("❌ Fetch error:", error);
    botPlaceholder.innerText = "⚠️ Error: " + error.message;
  }
}

// Function to add messages
function addMessage(text, sender) {
  let chatbox = document.getElementById("chatbox");
  let div = document.createElement("div");
  div.className = "msg " + sender;
  div.innerText = text;
  chatbox.appendChild(div);
  chatbox.scrollTop = chatbox.scrollHeight;
  return div; // return element for updates
}

// Speak text using browser's voice
function speak(text) {
  const speech = new SpeechSynthesisUtterance(text);
  speech.lang = "en-US";
  speech.pitch = 1;
  speech.rate = 1.1; // slightly faster, snappier
  window.speechSynthesis.speak(speech);
}