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* Ahmad Bot UI
* Chat interface, launcher button, and panel management
* Mounts to existing #jit-launcher and #jit-panel DOM elements
*/
class AhmadBotUI {
constructor() {
this.engine = null;
this.elements = this.initElements();
this.state = {
isOpen: false,
isMinimized: false,
hasModel: false,
isDragging: false,
panelStartX: 0,
panelStartY: 0,
};
this.setupEventListeners();
this.ensureStyles();
this.updateStatus('OFFLINE');
}
/**
* Initialize DOM elements
*/
initElements() {
return {
launcher: document.getElementById('jit-launcher'),
launcherButton: document.getElementById('jit-toggle'),
progressRing: document.getElementById('jit-progress-ring'),
panel: document.getElementById('jit-panel'),
header: document.querySelector('.jit-header'),
messagesContainer: document.getElementById('jit-messages'),
statusBadge: document.getElementById('jit-status'),
input: document.getElementById('jit-input'),
sendBtn: document.getElementById('jit-send'),
stopBtn: document.getElementById('jit-stop'),
clearBtn: document.getElementById('jit-clear'),
minimizeBtn: document.getElementById('jit-minimize'),
closeBtn: document.getElementById('jit-close'),
};
}
/**
* Setup all event listeners
*/
setupEventListeners() {
// Launcher button
this.elements.launcherButton.addEventListener('click', () => this.togglePanel());
// Panel controls
this.elements.minimizeBtn.addEventListener('click', () => this.toggleMinimize());
this.elements.closeBtn.addEventListener('click', () => this.closePanel());
this.elements.clearBtn.addEventListener('click', () => this.clearMessages());
// Chat input
this.elements.input.addEventListener('keydown', (e) => {
if (e.key === 'Enter' && !e.shiftKey && !e.ctrlKey) {
e.preventDefault();
this.sendMessage();
}
});
this.elements.sendBtn.addEventListener('click', () => this.sendMessage());
this.elements.stopBtn.addEventListener('click', () => this.stopGeneration());
// Panel dragging
this.elements.header.addEventListener('mousedown', (e) => this.startDrag(e));
document.addEventListener('mousemove', (e) => this.drag(e));
document.addEventListener('mouseup', () => this.endDrag());
// Auto-focus input when panel opens
this.elements.panel.addEventListener('transitionend', () => {
if (!this.state.isOpen) return;
if (this.state.hasModel) {
this.elements.input.focus();
}
});
}
/**
* Toggle panel visibility
*/
async togglePanel() {
if (this.state.isOpen) {
this.closePanel();
} else {
this.openPanel();
}
}
/**
* Open panel
*/
async openPanel() {
this.state.isOpen = true;
this.elements.panel.classList.remove('hidden');
this.elements.launcherButton.classList.add('active');
// Initialize engine on first open
if (!this.engine) {
await this.initializeEngine();
}
// Wait for animation
await new Promise(r => setTimeout(r, 100));
this.elements.input.focus();
}
/**
* Close panel
*/
closePanel() {
this.state.isOpen = false;
this.elements.panel.classList.add('hidden');
this.elements.launcherButton.classList.remove('active');
}
/**
* Toggle minimize
*/
toggleMinimize() {
this.state.isMinimized = !this.state.isMinimized;
if (this.state.isMinimized) {
this.elements.panel.classList.add('minimized');
} else {
this.elements.panel.classList.remove('minimized');
}
}
/**
* Initialize WebLLM engine
*/
async initializeEngine() {
try {
if (!AhmadWebLLMEngine.hasWebLLM()) {
this.updateStatus('ERROR');
this.addMessage({
role: 'system',
content: '✗ WebLLM not available. Ensure @mlc-ai/web-llm is loaded.',
});
return;
}
this.updateStatus('LOADING');
this.elements.launcherButton.classList.add('loading');
this.addMessage({
role: 'system',
content: '⏳ Initializing Ahmad Bot...',
});
// Create engine
this.engine = new AhmadWebLLMEngine({
temperature: 0.3,
topP: 0.85,
maxTokens: 512,
});
// Setup listeners
this.engine.on('statusChanged', (status) => this.updateStatus(status));
this.engine.on('token', (token) => this.appendToken(token));
this.engine.on('generationStart', () => {
this.elements.sendBtn.disabled = true;
this.elements.stopBtn.disabled = false;
});
this.engine.on('generationComplete', () => {
this.elements.sendBtn.disabled = false;
this.elements.stopBtn.disabled = true;
});
this.engine.on('generationStopped', () => {
this.elements.sendBtn.disabled = false;
this.elements.stopBtn.disabled = true;
});
this.engine.on('error', (error) => this.onError(error));
// Initialize
await this.engine.initialize();
this.state.hasModel = true;
this.elements.launcherButton.classList.remove('loading');
this.elements.input.disabled = false;
this.elements.sendBtn.disabled = false;
const webgpu = AhmadWebLLMEngine.hasWebGPU() ? 'WebGPU' : 'CPU';
this.addMessage({
role: 'system',
content: `✓ Ready. Model: ${this.engine.modelId} | Acceleration: ${webgpu}`,
});
} catch (error) {
this.updateStatus('ERROR');
this.elements.launcherButton.classList.remove('loading');
this.addMessage({
role: 'system',
content: `✗ Failed: ${error.message}`,
});
console.error('[Ahmad Bot UI] Init error:', error);
}
}
/**
* Send user message
*/
async sendMessage() {
const userMessage = this.elements.input.value.trim();
if (!userMessage || !this.engine) {
return;
}
if (this.engine.isGenerating) {
this.addMessage({
role: 'system',
content: 'Generation in progress. Click Stop or wait.',
});
return;
}
// Add user message to UI
this.addMessage({
role: 'user',
content: userMessage,
});
// Clear input
this.elements.input.value = '';
this.elements.input.style.height = 'auto';
// Build system prompt with notebook context
const systemPrompt = this.engine.buildSystemPrompt(userMessage);
// Generate response
try {
await this.engine.generate(userMessage, systemPrompt);
} catch (error) {
if (error.message !== 'Generation aborted') {
this.onError(error.message);
}
}
}
/**
* Append token to current message
*/
appendToken(token) {
const messages = this.elements.messagesContainer.querySelectorAll('.jit-message');
const lastMessage = messages[messages.length - 1];
if (lastMessage && lastMessage.dataset.role === 'assistant') {
const bubble = lastMessage.querySelector('.jit-message-bubble');
bubble.textContent += token;
// Auto-scroll to bottom
if (!this.isUserScrolledUp()) {
this.elements.messagesContainer.scrollTop = this.elements.messagesContainer.scrollHeight;
}
}
}
/**
* Check if user scrolled up
*/
isUserScrolledUp() {
const c = this.elements.messagesContainer;
return c.scrollTop < c.scrollHeight - c.clientHeight - 100;
}
/**
* Add message to UI
*/
addMessage({ role, content, streaming = false }) {
const messageDiv = document.createElement('div');
messageDiv.className = `jit-message jit-message-${role}`;
messageDiv.dataset.role = role;
const bubble = document.createElement('div');
bubble.className = 'jit-message-bubble';
// Set content
if (role === 'system') {
bubble.style.fontSize = '11px';
bubble.style.opacity = '0.8';
bubble.style.fontStyle = 'italic';
}
bubble.textContent = content;
messageDiv.appendChild(bubble);
this.elements.messagesContainer.appendChild(messageDiv);
// Auto-scroll
this.elements.messagesContainer.scrollTop = this.elements.messagesContainer.scrollHeight;
return messageDiv;
}
/**
* Clear messages
*/
clearMessages() {
this.elements.messagesContainer.innerHTML = '';
if (this.engine) {
this.engine.clearHistory();
}
this.addMessage({
role: 'system',
content: 'Chat history cleared.',
});
}
/**
* Stop generation
*/
stopGeneration() {
if (this.engine && this.engine.isGenerating) {
this.engine.interrupt();
}
}
/**
* Update status badge
*/
updateStatus(status) {
const statusMap = {
'OFFLINE': 'offline',
'LOADING': 'loading',
'READY': 'ready',
'GENERATING': 'generating',
'ERROR': 'error',
};
const cssClass = statusMap[status] || 'offline';
// Remove old status classes
this.elements.statusBadge.className = 'jit-status-badge';
this.elements.statusBadge.classList.add(`jit-status-${cssClass}`);
this.elements.statusBadge.textContent = status;
}
/**
* Handle errors
*/
onError(errorMessage) {
this.addMessage({
role: 'system',
content: `✗ Error: ${errorMessage}`,
});
this.updateStatus('ERROR');
}
/**
* Panel dragging
*/
startDrag(e) {
if (e.target !== this.elements.header && !this.elements.header.contains(e.target)) {
return;
}
this.state.isDragging = true;
this.state.panelStartX = e.clientX - this.elements.panel.offsetLeft;
this.state.panelStartY = e.clientY - this.elements.panel.offsetTop;
this.elements.panel.style.cursor = 'grabbing';
}
drag(e) {
if (!this.state.isDragging) return;
const x = e.clientX - this.state.panelStartX;
const y = e.clientY - this.state.panelStartY;
this.elements.panel.style.left = Math.max(0, Math.min(x, window.innerWidth - this.elements.panel.offsetWidth)) + 'px';
this.elements.panel.style.top = Math.max(0, Math.min(y, window.innerHeight - this.elements.panel.offsetHeight)) + 'px';
}
endDrag() {
this.state.isDragging = false;
this.elements.panel.style.cursor = 'auto';
}
/**
* Ensure styles are present
*/
ensureStyles() {
if (document.querySelector('style[data-ahmad-bot-styles]')) {
return;
}
const style = document.createElement('style');
style.setAttribute('data-ahmad-bot-styles', 'true');
style.textContent = `
.jit-status-badge {
display: inline-block;
font-size: 10px;
font-weight: 700;
text-transform: uppercase;
padding: 3px 8px;
border-radius: 3px;
letter-spacing: 0.5px;
}
.jit-status-offline {
background: rgba(107, 114, 128, 0.3);
color: #a0a0a0;
}
.jit-status-loading {
background: rgba(59, 130, 246, 0.3);
color: #60a5fa;
animation: ahmad-pulse 1.5s ease-in-out infinite;
}
.jit-status-ready {
background: rgba(16, 185, 129, 0.3);
color: #10b981;
}
.jit-status-generating {
background: rgba(0, 217, 255, 0.3);
color: #00d9ff;
animation: ahmad-pulse 1s ease-in-out infinite;
}
.jit-status-error {
background: rgba(239, 68, 68, 0.3);
color: #ef4444;
}
@keyframes ahmad-pulse {
0%, 100% { opacity: 0.7; }
50% { opacity: 1; }
}
.jit-message-user .jit-message-bubble {
background: #00d9ff;
color: #0a0e27;
}
.jit-message-assistant .jit-message-bubble {
background: #1a1a2e;
color: #e0e0e0;
}
`;
document.head.appendChild(style);
}
/**
* Get UI stats
*/
getStats() {
return {
isOpen: this.state.isOpen,
hasModel: this.state.hasModel,
status: this.engine?.status || 'OFFLINE',
messageCount: this.elements.messagesContainer.querySelectorAll('.jit-message').length,
};
}
}
// Initialize on DOM ready
if (document.readyState === 'loading') {
document.addEventListener('DOMContentLoaded', () => {
window.ahmadBotUI = new AhmadBotUI();
});
} else {
window.ahmadBotUI = new AhmadBotUI();
}
// Export
if (typeof module !== 'undefined' && module.exports) {
module.exports = AhmadBotUI;
}
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