// Floating Chatbot Helper
class ChatbotHelper {
constructor() {
this.isOpen = false;
this.isMinimized = false;
this.messages = [];
this.init();
}
init() {
this.createFloatingButton();
this.createChatModal();
this.bindEvents();
this.addWelcomeMessage();
}
createFloatingButton() {
// Create floating button
this.floatingBtn = document.createElement('div');
this.floatingBtn.className = 'chatbot-floating-btn';
this.floatingBtn.innerHTML = `
Help
`;
document.body.appendChild(this.floatingBtn);
}
createChatModal() {
// Create modal container
this.modal = document.createElement('div');
this.modal.className = 'chatbot-modal';
this.modal.innerHTML = `
`;
document.body.appendChild(this.modal);
}
bindEvents() {
// Floating button click
this.floatingBtn.addEventListener('click', () => {
this.toggleChat();
});
// Close button
document.getElementById('closeBtn').addEventListener('click', () => {
this.closeChat();
});
// Minimize button
document.getElementById('minimizeBtn').addEventListener('click', () => {
this.minimizeChat();
});
// Send button
document.getElementById('chatbotSendBtn').addEventListener('click', () => {
this.sendMessage();
});
// Enter key in input
document.getElementById('chatbotInput').addEventListener('keypress', (e) => {
if (e.key === 'Enter') {
this.sendMessage();
}
});
// Input change
document.getElementById('chatbotInput').addEventListener('input', (e) => {
const sendBtn = document.getElementById('chatbotSendBtn');
sendBtn.disabled = !e.target.value.trim();
});
// Quick question buttons
document.querySelectorAll('.quick-question-btn').forEach(btn => {
btn.addEventListener('click', (e) => {
const question = e.target.getAttribute('data-question');
document.getElementById('chatbotInput').value = question;
this.sendMessage();
});
});
// Click outside to close
this.modal.addEventListener('click', (e) => {
if (e.target === this.modal) {
this.closeChat();
}
});
}
addWelcomeMessage() {
this.addMessage('Hi! I\'m here to help with OncoConnect questions. Ask me about accounts, image uploads, trials, or challenges!', 'bot');
}
toggleChat() {
if (this.isOpen) {
this.closeChat();
} else {
this.openChat();
}
}
openChat() {
this.isOpen = true;
this.isMinimized = false;
this.modal.classList.add('show');
this.floatingBtn.classList.add('active');
document.getElementById('chatbotInput').focus();
}
closeChat() {
this.isOpen = false;
this.isMinimized = false;
this.modal.classList.remove('show');
this.floatingBtn.classList.remove('active');
}
minimizeChat() {
this.isMinimized = !this.isMinimized;
this.modal.classList.toggle('minimized', this.isMinimized);
}
async sendMessage() {
const input = document.getElementById('chatbotInput');
const message = input.value.trim();
if (!message) return;
// Add user message
this.addMessage(message, 'user');
input.value = '';
// Disable send button
const sendBtn = document.getElementById('chatbotSendBtn');
sendBtn.disabled = true;
// Show typing indicator
this.showTyping();
try {
const response = await fetch('http://localhost:5000/chat', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
},
body: JSON.stringify({ message: message })
});
if (!response.ok) {
throw new Error('Network response was not ok');
}
const data = await response.json();
this.hideTyping();
this.addMessage(data.response, 'bot');
} catch (error) {
this.hideTyping();
this.addMessage('Sorry, I encountered an error. Please try again or contact support for assistance.', 'bot');
console.error('Chatbot error:', error);
}
sendBtn.disabled = false;
}
addMessage(text, sender) {
const messagesContainer = document.getElementById('chatbotMessages');
const messageDiv = document.createElement('div');
messageDiv.className = `chatbot-message ${sender}-message`;
if (sender === 'user') {
messageDiv.innerHTML = `
${this.escapeHtml(text)}
${this.getCurrentTime()}
`;
} else {
messageDiv.innerHTML = `
${this.escapeHtml(text)}
${this.getCurrentTime()}
`;
}
messagesContainer.appendChild(messageDiv);
messagesContainer.scrollTop = messagesContainer.scrollHeight;
}
showTyping() {
document.getElementById('chatbotTyping').style.display = 'block';
const messagesContainer = document.getElementById('chatbotMessages');
messagesContainer.scrollTop = messagesContainer.scrollHeight;
}
hideTyping() {
document.getElementById('chatbotTyping').style.display = 'none';
}
escapeHtml(text) {
const div = document.createElement('div');
div.textContent = text;
return div.innerHTML;
}
getCurrentTime() {
const now = new Date();
return now.toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' });
}
}
// Initialize chatbot when DOM is loaded
document.addEventListener('DOMContentLoaded', function() {
window.chatbot = new ChatbotHelper();
});