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index.html
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<!DOCTYPE html>
<html lang="pt-BR">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Chatbot Inteligente</title>
<style>
body {
font-family: 'Arial', sans-serif;
margin: 0;
padding: 0;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
min-height: 100vh;
background-color: #2c2c2c;
color: #f4f4f4;
}
#chat-container {
width: 100%;
max-width: 700px;
background-color: #3c3c3c;
box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
border-radius: 8px;
display: flex;
flex-direction: column;
overflow: hidden;
}
#messages {
flex-grow: 1;
padding: 20px;
overflow-y: auto;
display: flex;
flex-direction: column;
}
.message {
margin: 10px 0;
padding: 10px;
border-radius: 8px;
max-width: 90%;
word-wrap: break-word;
}
.user-message {
background-color: #366b80;
align-self: flex-end;
color: #f4f4f4;
}
.bot-message {
background-color: #444;
align-self: flex-start;
color: #f4f4f4;
}
.bot-message pre {
background-color: #555;
padding: 8px;
border-radius: 8px;
overflow-x: auto;
max-width: 100%;
}
.typing-indicator {
display: flex;
align-items: center;
justify-content: center;
margin: 10px 0;
width: 100%;
}
.typing-indicator .loader {
border: 4px solid #f3f3f3;
border-radius: 50%;
border-top: 4px solid #444;
width: 20px;
height: 20px;
animation: spin 1s linear infinite;
}
@keyframes spin {
0% { transform: rotate(0deg); }
100% { transform: rotate(360deg); }
}
#input-container {
display: flex;
padding: 10px;
border-top: 1px solid #ccc;
background-color: #4c4c4c;
}
#user-input {
flex-grow: 1;
padding: 10px;
border: 1px solid #ccc;
border-radius: 8px;
outline: none;
background-color: #3c3c3c;
color: #f4f4f4;
}
#send-button {
padding: 10px 15px;
margin-left: 10px;
background-color: #28a745;
color: white;
border: none;
border-radius: 8px;
cursor: pointer;
}
#send-button:disabled {
background-color: #cccccc;
cursor: not-allowed;
}
#clear-chat {
margin: 10px;
padding: 10px 15px;
background-color: #dc3545;
color: white;
border: none;
border-radius: 8px;
cursor: pointer;
}
</style>
</head>
<body>
<div id="chat-container">
<div id="messages" aria-live="polite"></div>
<div id="input-container">
<input type="text" id="user-input" placeholder="Digite sua mensagem aqui..." aria-label="Mensagem">
<button id="send-button" disabled>Enviar</button>
</div>
</div>
<button id="clear-chat">Reiniciar Chat</button>
<script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.7.0/highlight.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/marked/4.3.0/marked.min.js"></script>
<script>
const API_URL = 'https://api-inference.huggingface.co/models/mistralai/Mixtral-8x7B-Instruct-v0.1';
const API_KEY = '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';
const messagesContainer = document.getElementById('messages');
const userInput = document.getElementById('user-input');
const sendButton = document.getElementById('send-button');
const clearChatButton = document.getElementById('clear-chat');
let conversationHistory = [];
let isProcessing = false;
async function queryAPI(data) {
try {
const response = await fetch(API_URL, {
headers: {
Authorization: `Bearer ${API_KEY}`,
'Content-Type': 'application/json'
},
method: 'POST',
body: JSON.stringify(data),
});
if (!response.ok) throw new Error(`Erro na requisição: ${response.status} ${response.statusText}`);
return await response.json();
} catch (error) {
console.error('Erro ao chamar a API:', error);
return { error: error.message };
}
}
function addMessage(messageContent, isUser) {
const messageElement = document.createElement('div');
messageElement.className = `message ${isUser ? 'user-message' : 'bot-message'}`;
if (isUser) {
messageElement.textContent = messageContent;
} else {
messageElement.innerHTML = messageContent;
}
messagesContainer.appendChild(messageElement);
messagesContainer.scrollTop = messagesContainer.scrollHeight;
}
function addTypingIndicator() {
const typingIndicator = document.createElement('div');
typingIndicator.className = 'typing-indicator';
typingIndicator.innerHTML = '<div class="loader"></div>';
messagesContainer.appendChild(typingIndicator);
messagesContainer.scrollTop = messagesContainer.scrollHeight;
return typingIndicator;
}
function removeElement(element) {
if (element) messagesContainer.removeChild(element);
}
function buildPrompt() {
const maxHistoryLength = 50; // Manter mais histórico
const promptHistory = conversationHistory.slice(-maxHistoryLength);
let prompt = `<s>[INST] Você é um bom assistente que responde em português. [/INST]\n`;
promptHistory.forEach(msg => {
if (msg.role === 'user') {
prompt += `[INST] ${msg.content} [/INST] `;
} else {
prompt += `${msg.content} </s> <s>`;
}
});
prompt += `[INST] ${userInput.value.trim()} [/INST]`;
return prompt;
}
function cleanResponse(response) {
return response.trim().replace(/<\/?s>/g, '');
}
async function processBotResponse(typingIndicator) {
if (isProcessing) return;
isProcessing = true;
const requestData = {
inputs: buildPrompt(),
parameters: {
max_new_tokens: 500,
temperature: 0.7,
top_p: 0.9,
repetition_penalty: 1.2,
return_full_text: false
}
};
try {
const botResponse = await queryAPI(requestData);
let botMessage = 'Desculpe, não consegui gerar uma resposta.';
if (botResponse?.generated_text) {
botMessage = cleanResponse(botResponse.generated_text);
} else if (botResponse?.[0]?.generated_text) {
botMessage = cleanResponse(botResponse[0].generated_text);
}
if (botMessage.includes('<code>') || botMessage.includes('</code>')) {
botMessage = `<pre><code>${botMessage.replace(/<\/?code>/g, '')}</code></pre>`;
} else {
botMessage = marked.parse(botMessage);
}
conversationHistory.push({ role: 'assistant', content: botMessage });
saveConversationHistory();
removeElement(typingIndicator);
addMessage(botMessage, false);
} catch (error) {
addMessage(`Desculpe, ocorreu um erro: ${error.message}`, false);
removeElement(typingIndicator);
} finally {
sendButton.disabled = false;
userInput.focus();
isProcessing = false;
}
}
function handleUserInput() {
const userMessage = userInput.value.trim();
if (userMessage === '') return;
conversationHistory.push({ role: 'user', content: userMessage });
saveConversationHistory();
addMessage(userMessage, true);
userInput.value = '';
const typingIndicator = addTypingIndicator();
sendButton.disabled = true;
processBotResponse(typingIndicator);
}
function debounce(fn, delay) {
let timeoutId;
return function (...args) {
if (timeoutId) clearTimeout(timeoutId);
timeoutId = setTimeout(() => fn(...args), delay);
};
}
const debouncedHandleUserInput = debounce(handleUserInput, 300);
function encryptData(data) {
return btoa(JSON.stringify(data)); // Simples criptografia base64
}
function decryptData(data) {
return JSON.parse(atob(data));
}
function saveConversationHistory() {
try {
const encryptedData = encryptData(conversationHistory);
localStorage.setItem('conversationHistory', encryptedData);
} catch (error) {
console.error('Erro ao salvar histórico de conversa:', error);
}
}
function loadConversationHistory() {
try {
const storedHistory = localStorage.getItem('conversationHistory');
if (storedHistory) {
conversationHistory = decryptData(storedHistory);
conversationHistory.forEach(msg => addMessage(msg.content, msg.role === 'user'));
}
} catch (error) {
console.error('Erro ao carregar histórico de conversa:', error);
}
}
sendButton.addEventListener('click', debouncedHandleUserInput);
userInput.addEventListener('input', () => {
sendButton.disabled = userInput.value.trim() === '';
});
userInput.addEventListener('keypress', (event) => {
if (event.key === 'Enter' && !sendButton.disabled) {
debouncedHandleUserInput();
}
});
clearChatButton.addEventListener('click', () => {
if (confirm('Tem certeza de que deseja reiniciar o chat? Isso apagará todo o histórico.')) {
conversationHistory = [];
localStorage.removeItem('conversationHistory');
messagesContainer.innerHTML = '';
}
});
loadConversationHistory();
userInput.focus();
</script>
</body>
</html>