const socket = io.connect(document.baseURI);

const chatBox = document.getElementById('chat-box');
const chatInput = document.getElementById('chat-input');
const sendButton = document.getElementById('send-button');
var converter = new showdown.Converter();
var response="";


function addLoader(){
    // loader_ele = `
    //     <div class="dot-loader">
    //         <div></div>
    //         <div></div>
    //         <div></div>
    //     </div>
    // `
    const loader_ele = document.createElement('div');
    loader_ele.classList.add('dot-loader');
    loader_ele.innerHTML = `
            <div></div>
            <div></div>
            <div></div>
    `;
    chatBox.appendChild(loader_ele);
}

function appendMessage(message, sender) {
    if(sender == "bot"){
        response += message;
        message = converter.makeHtml(response);

        let loader_ele = chatBox.lastElementChild;
        
        if(!loader_ele.classList.contains("hidden")){
            chatBox.removeChild(loader_ele);
            const messageElement = document.createElement('div');
            messageElement.classList.add('chat-message', sender);
            messageElement.innerHTML = `<span>${message}</span>`;
            chatBox.append(messageElement);
            chatBox.scrollTop = chatBox.scrollHeight;
        }else{
            last_message_ele = chatBox.lastElementChild.lastChild;
            last_message_ele.innerHTML  = message;
            chatBox.scrollTop = chatBox.scrollHeight;
        }
    }else{
        const messageElement = document.createElement('div');
        messageElement.classList.add('chat-message', sender);
        messageElement.innerHTML = `<span>${message}</span>`;
        chatBox.append(messageElement);
        chatBox.scrollTop = chatBox.scrollHeight;
        setTimeout(() => {
            addLoader()
        }, 500);
    }
    chatBox.scrollTop = chatBox.scrollHeight;
}

sendButton.addEventListener('click', () => {
    const message = chatInput.value.trim();
    if (message) {
        appendMessage(message, 'user');
        socket.emit('message', { question: message, session_id: 'abc123' });
        // setInterval(()=>{
        //     appendMessage("This is a test message", "bot");
        // }, 2000)
        chatInput.value = '';
        response = "";
    }
});

chatInput.addEventListener('keypress', (e) => {
    if (e.key === 'Enter') {
        sendButton.click();
    }
});

socket.on('response', (response) => {
    appendMessage(response, 'bot');
});