Files
Autoparts-DB/pos/static/js/chat.js
consultoria-as 39f2aaf98f feat(pos/chat): add 4 AI chatbot improvements — symptom diagnosis, smart quotes, photo ID, multilanguage
1. Symptom diagnosis: AI now detects vehicle symptoms and suggests probable parts
2. Smart quotations: "cotizame frenos completos" returns multiple search_queries (pipe-separated), backend searches each term and deduplicates
3. Photo identification: camera button in chat widget uploads image and sends placeholder prompt (ready for vision model)
4. Multilanguage: AI detects user language and responds accordingly, search_query always in English

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-04 08:00:41 +00:00

435 lines
14 KiB
JavaScript

// /home/Autopartes/pos/static/js/chat.js
// AI Chat Widget for Nexus POS — natural language parts lookup
(function () {
'use strict';
// ─── State ───
let isOpen = false;
let isSending = false;
let isListening = false;
let recognition = null;
const history = []; // conversation history for AI context
const hasSpeechAPI = ('webkitSpeechRecognition' in window || 'SpeechRecognition' in window);
// ─── Build DOM ───
function init() {
// FAB button
const fab = document.createElement('button');
fab.className = 'chat-fab';
fab.id = 'chatFab';
fab.title = 'Asistente IA';
fab.innerHTML = '&#x1F4AC;'; // speech bubble emoji
fab.setAttribute('aria-label', 'Abrir asistente IA');
// Chat panel
const panel = document.createElement('div');
panel.className = 'chat-panel';
panel.id = 'chatPanel';
panel.innerHTML = `
<div class="chat-header">
<h3>Asistente IA — Buscar partes</h3>
<button class="chat-header-close" id="chatClose" aria-label="Cerrar">&times;</button>
</div>
<div class="chat-messages" id="chatMessages">
<div class="chat-msg ai">Hola, soy el asistente de Nexus. Dime que refaccion necesitas y te ayudo a encontrarla.</div>
<div class="chat-typing" id="chatTyping">
<span></span><span></span><span></span>
</div>
</div>
<div class="chat-input-area">
<textarea class="chat-input" id="chatInput" placeholder="Ej: Balatas para Tsuru 2015..." rows="1"></textarea>
<input type="file" id="chatImageInput" accept="image/*" capture="environment" style="display:none;">
<button class="chat-cam-btn" id="chatCam" aria-label="Enviar foto de parte" title="Identificar parte por foto">&#128247;</button>
${hasSpeechAPI ? '<button class="chat-mic-btn" id="chatMic" aria-label="Entrada por voz" title="Entrada por voz">&#127908;</button>' : ''}
<button class="chat-send-btn" id="chatSend" aria-label="Enviar">&#9654;</button>
</div>
`;
document.body.appendChild(fab);
document.body.appendChild(panel);
// Events
fab.addEventListener('click', toggleChat);
document.getElementById('chatClose').addEventListener('click', toggleChat);
document.getElementById('chatSend').addEventListener('click', sendMessage);
document.getElementById('chatInput').addEventListener('keydown', function (e) {
if (e.key === 'Enter' && !e.shiftKey) {
e.preventDefault();
sendMessage();
}
});
// Camera button — identify part by photo
document.getElementById('chatCam').addEventListener('click', function () {
document.getElementById('chatImageInput').click();
});
document.getElementById('chatImageInput').addEventListener('change', handleImageUpload);
// Mic button (only if Speech API available)
if (hasSpeechAPI) {
document.getElementById('chatMic').addEventListener('click', toggleVoice);
}
// Auto-resize textarea
document.getElementById('chatInput').addEventListener('input', function () {
this.style.height = 'auto';
this.style.height = Math.min(this.scrollHeight, 80) + 'px';
});
}
// ─── Voice Input (Web Speech API) ───
function toggleVoice() {
if (isListening) {
stopVoice();
return;
}
startVoice();
}
function startVoice() {
const SpeechRecognition = window.SpeechRecognition || window.webkitSpeechRecognition;
if (!SpeechRecognition) return;
recognition = new SpeechRecognition();
recognition.lang = 'es-MX';
recognition.continuous = false;
recognition.interimResults = true;
const input = document.getElementById('chatInput');
const micBtn = document.getElementById('chatMic');
const savedPlaceholder = input.placeholder;
recognition.onstart = function () {
isListening = true;
micBtn.classList.add('listening');
input.placeholder = 'Escuchando...';
input.value = '';
};
recognition.onresult = function (e) {
let interim = '';
let finalTranscript = '';
for (let i = e.resultIndex; i < e.results.length; i++) {
if (e.results[i].isFinal) {
finalTranscript += e.results[i][0].transcript;
} else {
interim += e.results[i][0].transcript;
}
}
if (finalTranscript) {
input.value = finalTranscript;
} else {
input.value = interim;
}
};
recognition.onend = function () {
isListening = false;
micBtn.classList.remove('listening');
input.placeholder = savedPlaceholder;
recognition = null;
// Auto-send if we got text
if (input.value.trim()) {
sendMessage();
}
};
recognition.onerror = function (e) {
isListening = false;
micBtn.classList.remove('listening');
input.placeholder = savedPlaceholder;
recognition = null;
if (e.error === 'no-speech' || e.error === 'audio-capture' || e.error === 'not-allowed') {
showVoiceToast('No se detecto voz');
}
};
recognition.start();
}
function stopVoice() {
if (recognition) {
recognition.abort();
recognition = null;
}
isListening = false;
const micBtn = document.getElementById('chatMic');
if (micBtn) micBtn.classList.remove('listening');
}
function showVoiceToast(msg) {
const toast = document.createElement('div');
toast.className = 'chat-voice-toast';
toast.textContent = msg;
document.body.appendChild(toast);
setTimeout(function () { toast.classList.add('visible'); }, 10);
setTimeout(function () {
toast.classList.remove('visible');
setTimeout(function () { toast.remove(); }, 300);
}, 2000);
}
// ─── Image Upload (Part identification placeholder) ───
function handleImageUpload(e) {
const file = e.target.files && e.target.files[0];
if (!file) return;
// Reset input so the same file can be selected again
e.target.value = '';
// Validate file type and size (max 5MB)
if (!file.type.startsWith('image/')) {
addBubble('Solo se permiten imagenes.', 'ai');
return;
}
if (file.size > 5 * 1024 * 1024) {
addBubble('La imagen es muy grande (max 5MB).', 'ai');
return;
}
// Show image thumbnail in chat
const reader = new FileReader();
reader.onload = function (ev) {
const container = document.getElementById('chatMessages');
const typing = document.getElementById('chatTyping');
const div = document.createElement('div');
div.className = 'chat-msg user chat-msg-image';
div.innerHTML = '<img src="' + ev.target.result + '" alt="Foto de parte" style="max-width:180px;max-height:140px;border-radius:8px;display:block;margin-bottom:4px;">'
+ '<span>Identificar esta parte</span>';
container.insertBefore(div, typing);
scrollToBottom();
// Send to AI as a text description (vision model placeholder)
const photoPrompt = 'El usuario envio una foto de una parte automotriz. Describe que parte podria ser y sugiere busquedas.';
history.push({ role: 'user', content: photoPrompt });
if (history.length > 20) history.splice(0, 2);
isSending = true;
document.getElementById('chatSend').disabled = true;
showTyping(true);
const token = getToken();
fetch('/pos/api/chat', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
'Authorization': 'Bearer ' + token
},
body: JSON.stringify({
message: photoPrompt,
history: history.slice(-10)
})
})
.then(function (resp) { return resp.json(); })
.then(function (data) {
const aiMsg = data.response || 'No pude identificar la parte. Intenta describirla con texto.';
addBubble(aiMsg, 'ai');
history.push({ role: 'assistant', content: aiMsg });
if (data.vehicle && data.vehicle.brand_id) {
addVehicleBanner(data.vehicle);
}
if (data.search_results && data.search_results.length > 0) {
addPartResults(data.search_results);
}
})
.catch(function (err) {
addBubble('Error al procesar imagen: ' + err.message, 'ai');
})
.finally(function () {
isSending = false;
document.getElementById('chatSend').disabled = false;
showTyping(false);
});
};
reader.readAsDataURL(file);
}
function toggleChat() {
isOpen = !isOpen;
const panel = document.getElementById('chatPanel');
const fab = document.getElementById('chatFab');
if (isOpen) {
panel.classList.add('open');
fab.style.display = 'none';
document.getElementById('chatInput').focus();
} else {
panel.classList.remove('open');
fab.style.display = 'flex';
}
}
function getToken() {
// app-init.js stores token in window.__pos or localStorage
if (window.__pos && window.__pos.token) return window.__pos.token;
return localStorage.getItem('pos_token') || '';
}
// ─── Send message ───
async function sendMessage() {
if (isSending) return;
const input = document.getElementById('chatInput');
const text = input.value.trim();
if (!text) return;
input.value = '';
input.style.height = 'auto';
// Add user bubble
addBubble(text, 'user');
// Keep history for context (last 10 exchanges)
history.push({ role: 'user', content: text });
if (history.length > 20) history.splice(0, 2);
// Show typing
isSending = true;
document.getElementById('chatSend').disabled = true;
showTyping(true);
try {
const token = getToken();
const resp = await fetch('/pos/api/chat', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
'Authorization': 'Bearer ' + token
},
body: JSON.stringify({
message: text,
history: history.slice(-10)
})
});
const data = await resp.json();
if (!resp.ok) {
addBubble('Error: ' + (data.error || resp.statusText), 'ai');
return;
}
// AI response bubble
const aiMsg = data.response || 'Sin respuesta.';
addBubble(aiMsg, 'ai');
history.push({ role: 'assistant', content: aiMsg });
// Vehicle info
if (data.vehicle && data.vehicle.brand_id) {
addVehicleBanner(data.vehicle);
}
// Search results
if (data.search_results && data.search_results.length > 0) {
addPartResults(data.search_results);
}
} catch (err) {
addBubble('Error de conexion: ' + err.message, 'ai');
} finally {
isSending = false;
document.getElementById('chatSend').disabled = false;
showTyping(false);
}
}
// ─── DOM helpers ───
function addBubble(text, role) {
const container = document.getElementById('chatMessages');
const typing = document.getElementById('chatTyping');
const div = document.createElement('div');
div.className = 'chat-msg ' + role;
div.textContent = text;
container.insertBefore(div, typing);
scrollToBottom();
}
function addVehicleBanner(vehicle) {
const container = document.getElementById('chatMessages');
const typing = document.getElementById('chatTyping');
const div = document.createElement('div');
div.className = 'chat-vehicle-banner';
let html = '<strong>' + esc(vehicle.brand || '') + ' ' + esc(vehicle.model || '') + '</strong>';
if (vehicle.year) html += ' ' + vehicle.year;
if (vehicle.mye_options && vehicle.mye_options.length > 0) {
html += '<br>Motorizaciones encontradas:';
vehicle.mye_options.forEach(function (opt) {
html += '<br>&bull; ' + esc(opt.engine);
if (opt.trim) html += ' (' + esc(opt.trim) + ')';
});
}
div.innerHTML = html;
container.insertBefore(div, typing);
scrollToBottom();
}
function addPartResults(parts) {
const container = document.getElementById('chatMessages');
const typing = document.getElementById('chatTyping');
const wrapper = document.createElement('div');
wrapper.className = 'chat-parts';
parts.slice(0, 8).forEach(function (p) {
const card = document.createElement('div');
card.className = 'chat-part-card';
const isLocal = p.source === 'local';
const stockQty = p.local_stock || 0;
const stockClass = stockQty > 0 ? 'in-stock' : '';
const stockText = stockQty > 0 ? (stockQty + ' en stock') : 'Sin stock local';
const name = p.name_es || p.name_part || '';
const partNum = p.oem_part_number || p.part_number || '';
const brand = p.brand || '';
const priceText = p.price_1 ? ('$' + parseFloat(p.price_1).toFixed(2)) : '';
const sourceTag = isLocal
? '<span style="background:var(--color-success);color:#fff;padding:1px 6px;border-radius:4px;font-size:0.65rem;margin-left:6px;">MI INVENTARIO</span>'
: '<span style="background:var(--color-primary);color:#fff;padding:1px 6px;border-radius:4px;font-size:0.65rem;margin-left:6px;">CATÁLOGO</span>';
card.innerHTML =
'<div class="part-number">' + esc(partNum) + sourceTag + (priceText ? ' &mdash; ' + priceText : '') + '</div>' +
'<div class="part-name">' + esc(name) + (brand ? ' <span style="color:var(--color-text-muted);">(' + esc(brand) + ')</span>' : '') + '</div>' +
'<div class="part-stock ' + stockClass + '">' + esc(stockText) + '</div>';
// Click to open detail (if catalog page has a detail function)
card.addEventListener('click', function () {
if (p.id_part && typeof window.openPartDetail === 'function') {
window.openPartDetail(p.id_part);
toggleChat();
}
});
wrapper.appendChild(card);
});
container.insertBefore(wrapper, typing);
scrollToBottom();
}
function showTyping(show) {
const el = document.getElementById('chatTyping');
if (el) el.classList.toggle('visible', show);
if (show) scrollToBottom();
}
function scrollToBottom() {
const el = document.getElementById('chatMessages');
if (el) el.scrollTop = el.scrollHeight;
}
function esc(s) {
const d = document.createElement('div');
d.textContent = s;
return d.innerHTML;
}
// ─── Init when DOM ready ───
if (document.readyState === 'loading') {
document.addEventListener('DOMContentLoaded', init);
} else {
init();
}
})();