feat(pos): add catalog UI — browsable inventory with cart and barcode scanner
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
293
pos/static/js/catalog.js
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293
pos/static/js/catalog.js
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// /home/Autopartes/pos/static/js/catalog.js
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// Catalog UI: browsable inventory with cart, barcode scanner, external lookup
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(function () {
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'use strict';
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const API = '/pos/api';
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const token = localStorage.getItem('pos_token');
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if (!token) { window.location.href = '/pos/login'; return; }
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const headers = { 'Authorization': 'Bearer ' + token, 'Content-Type': 'application/json' };
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// ─── State ───
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let currentPage = 1;
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let currentFilters = {};
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let cartItems = JSON.parse(localStorage.getItem('pos_cart') || '[]');
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let barcodeBuffer = '';
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let barcodeTimeout = null;
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// ─── API helpers ───
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async function apiFetch(url, opts) {
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const resp = await fetch(url, Object.assign({ headers: headers }, opts || {}));
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if (resp.status === 401) { localStorage.removeItem('pos_token'); window.location.href = '/pos/login'; return null; }
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return resp.json();
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}
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// ─── Catalog loading ───
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async function loadCatalog(page, filters) {
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currentPage = page || 1;
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currentFilters = filters || currentFilters;
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const params = new URLSearchParams({ page: currentPage, per_page: 30 });
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if (currentFilters.q) params.set('q', currentFilters.q);
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if (currentFilters.category) params.set('category', currentFilters.category);
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if (currentFilters.brand) params.set('brand', currentFilters.brand);
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if (currentFilters.vehicle_brand) params.set('vehicle_brand', currentFilters.vehicle_brand);
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const data = await apiFetch(API + '/catalog/search?' + params.toString());
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if (!data) return;
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renderGrid(data.data || []);
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renderPagination(data.pagination || {});
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renderActiveFilters();
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}
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function renderGrid(items) {
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const grid = document.getElementById('catalogGrid');
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if (!items.length) {
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grid.innerHTML = '<div class="empty-state"><p>No se encontraron productos</p><button onclick="checkExternalAvailability()" style="margin-top:12px; padding:8px 16px; cursor:pointer;">Buscar en bodegas Nexus</button></div>';
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return;
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}
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grid.innerHTML = items.map(function (it) {
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var stockClass = it.stock <= 0 ? 'stock-badge--zero' : (it.low_stock ? 'stock-badge--low' : 'stock-badge--ok');
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var stockLabel = it.stock <= 0 ? 'Agotado' : it.stock + ' ' + (it.unit || 'PZA');
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return '<div class="card catalog-card" onclick="window._addToCart(' + it.id + ')" data-id="' + it.id + '">' +
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(it.image_url ? '<img src="' + it.image_url + '" alt="" style="width:100%;height:120px;object-fit:contain;margin-bottom:8px;">' : '<div style="height:120px;background:#f0f0f0;display:flex;align-items:center;justify-content:center;margin-bottom:8px;border-radius:4px;color:#aaa;">Sin imagen</div>') +
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'<div style="font-weight:600;font-size:0.9rem;margin-bottom:4px;">' + escHtml(it.name) + '</div>' +
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'<div style="font-size:0.8rem;color:#666;margin-bottom:4px;">' + escHtml(it.part_number) + (it.brand ? ' · ' + escHtml(it.brand) : '') + '</div>' +
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'<div style="display:flex;justify-content:space-between;align-items:center;">' +
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'<span style="font-weight:700;font-size:1rem;">$' + fmt(it.price_1) + '</span>' +
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'<span class="stock-badge ' + stockClass + '">' + stockLabel + '</span>' +
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'</div></div>';
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}).join('');
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// Store items for cart lookup
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window._catalogItems = {};
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items.forEach(function (it) { window._catalogItems[it.id] = it; });
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}
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function renderPagination(pg) {
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var el = document.getElementById('pagination');
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if (!pg || pg.total_pages <= 1) { el.innerHTML = ''; return; }
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var html = '<button ' + (pg.page <= 1 ? 'disabled' : 'onclick="window._loadPage(' + (pg.page - 1) + ')"') + '>« Anterior</button>';
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html += '<span style="padding:6px 12px; font-size:0.85rem;">' + pg.page + ' / ' + pg.total_pages + '</span>';
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html += '<button ' + (pg.page >= pg.total_pages ? 'disabled' : 'onclick="window._loadPage(' + (pg.page + 1) + ')"') + '>Siguiente »</button>';
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el.innerHTML = html;
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}
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function renderActiveFilters() {
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var el = document.getElementById('activeFilters');
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var chips = [];
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if (currentFilters.category) chips.push('<span class="chip active" onclick="window._removeFilter(\'category\')">Cat: ' + currentFilters.category + ' ×</span>');
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if (currentFilters.brand) chips.push('<span class="chip active" onclick="window._removeFilter(\'brand\')">' + escHtml(currentFilters.brand) + ' ×</span>');
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if (currentFilters.vehicle_brand) chips.push('<span class="chip active" onclick="window._removeFilter(\'vehicle_brand\')">Vehiculo: ' + escHtml(currentFilters.vehicle_brand) + ' ×</span>');
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el.innerHTML = chips.join('');
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}
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// ─── Sidebar filters ───
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async function loadCategories() {
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var data = await apiFetch(API + '/catalog/categories');
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if (!data) return;
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var ul = document.getElementById('categoryList');
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var cats = data.data || [];
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if (!cats.length) { ul.innerHTML = '<li style="color:#999;">Sin categorias</li>'; return; }
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ul.innerHTML = '<li onclick="window._filterCat(null)" class="' + (!currentFilters.category ? 'active' : '') + '">Todas</li>' +
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cats.map(function (c) { return '<li onclick="window._filterCat(' + c.id + ')" class="' + (currentFilters.category == c.id ? 'active' : '') + '">Cat #' + c.id + ' <small>(' + c.count + ')</small></li>'; }).join('');
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}
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async function loadBrands() {
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var data = await apiFetch(API + '/catalog/brands');
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if (!data) return;
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var ul = document.getElementById('brandList');
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var brands = data.data || [];
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if (!brands.length) { ul.innerHTML = '<li style="color:#999;">Sin marcas</li>'; return; }
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ul.innerHTML = '<li onclick="window._filterBrand(null)" class="' + (!currentFilters.brand ? 'active' : '') + '">Todas</li>' +
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brands.map(function (b) { return '<li onclick="window._filterBrand(\'' + escHtml(b.name) + '\')" class="' + (currentFilters.brand === b.name ? 'active' : '') + '">' + escHtml(b.name) + ' <small>(' + b.count + ')</small></li>'; }).join('');
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}
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// ─── Barcode scanner ───
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async function lookupBarcode(code) {
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var data = await apiFetch(API + '/catalog/barcode/' + encodeURIComponent(code));
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if (!data || data.error) { alert('Parte no encontrada: ' + code); return; }
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addToCart(data);
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}
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// Listen for rapid keypress (barcode scanners type fast, then Enter)
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document.addEventListener('keydown', function (e) {
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if (e.key === 'F1') { e.preventDefault(); document.getElementById('searchInput').focus(); return; }
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if (document.activeElement.tagName === 'INPUT' || document.activeElement.tagName === 'TEXTAREA') return;
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if (e.key === 'Enter' && barcodeBuffer.length >= 4) {
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lookupBarcode(barcodeBuffer.trim());
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barcodeBuffer = '';
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return;
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}
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if (e.key.length === 1) {
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barcodeBuffer += e.key;
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clearTimeout(barcodeTimeout);
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barcodeTimeout = setTimeout(function () { barcodeBuffer = ''; }, 200);
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}
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});
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// ─── Cart ───
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function addToCart(item) {
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var existing = cartItems.find(function (c) { return c.id === item.id; });
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if (existing) {
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existing.quantity += 1;
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} else {
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cartItems.push({
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id: item.id, part_number: item.part_number, name: item.name,
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brand: item.brand, price: item.price_1, tax_rate: item.tax_rate || 0.16,
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unit: item.unit || 'PZA', stock: item.stock, quantity: 1
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});
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}
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saveCart();
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renderCart();
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}
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function removeFromCart(index) {
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cartItems.splice(index, 1);
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saveCart();
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renderCart();
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}
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function updateQuantity(index, qty) {
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qty = parseInt(qty);
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if (qty <= 0) { removeFromCart(index); return; }
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cartItems[index].quantity = qty;
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saveCart();
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renderCart();
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}
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function clearCartFn() {
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cartItems = [];
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saveCart();
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renderCart();
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}
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function saveCart() {
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localStorage.setItem('pos_cart', JSON.stringify(cartItems));
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}
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function renderCart() {
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var badge = document.getElementById('cartBadge');
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var total = cartItems.reduce(function (s, c) { return s + c.quantity; }, 0);
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badge.textContent = total;
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badge.style.display = total > 0 ? 'flex' : 'none';
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var container = document.getElementById('cartItems');
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var empty = document.getElementById('cartEmpty');
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var checkoutBtn = document.getElementById('checkoutBtn');
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if (!cartItems.length) {
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container.innerHTML = '';
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empty.style.display = 'block';
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checkoutBtn.disabled = true;
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document.getElementById('cartSubtotal').textContent = '$0.00';
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document.getElementById('cartTax').textContent = '$0.00';
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document.getElementById('cartTotal').textContent = '$0.00';
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return;
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}
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empty.style.display = 'none';
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checkoutBtn.disabled = false;
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var subtotal = 0;
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var tax = 0;
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container.innerHTML = cartItems.map(function (c, i) {
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var lineTotal = c.price * c.quantity;
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var lineTax = lineTotal * c.tax_rate;
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subtotal += lineTotal;
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tax += lineTax;
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return '<div class="cart-item">' +
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'<div style="flex:1;">' +
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'<div style="font-weight:600;font-size:0.85rem;">' + escHtml(c.name) + '</div>' +
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'<div style="font-size:0.75rem;color:#666;">' + escHtml(c.part_number) + '</div>' +
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'<div style="margin-top:4px;display:flex;align-items:center;gap:6px;">' +
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'<button onclick="window._updateQty(' + i + ',' + (c.quantity - 1) + ')" style="width:24px;height:24px;border:1px solid #ddd;background:#fff;border-radius:4px;cursor:pointer;">-</button>' +
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'<span style="font-weight:600;">' + c.quantity + '</span>' +
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'<button onclick="window._updateQty(' + i + ',' + (c.quantity + 1) + ')" style="width:24px;height:24px;border:1px solid #ddd;background:#fff;border-radius:4px;cursor:pointer;">+</button>' +
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'</div></div>' +
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'<div style="text-align:right;">' +
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'<div style="font-weight:600;">$' + fmt(lineTotal) + '</div>' +
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'<button onclick="window._removeFromCart(' + i + ')" style="font-size:0.75rem;color:#ef4444;background:none;border:none;cursor:pointer;margin-top:4px;">Quitar</button>' +
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'</div></div>';
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}).join('');
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document.getElementById('cartSubtotal').textContent = '$' + fmt(subtotal);
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document.getElementById('cartTax').textContent = '$' + fmt(tax);
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document.getElementById('cartTotal').textContent = '$' + fmt(subtotal + tax);
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}
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function toggleCart() {
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document.getElementById('cartSidebar').classList.toggle('open');
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}
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function goToCheckout() {
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localStorage.setItem('pos_cart', JSON.stringify(cartItems));
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window.location.href = '/pos/sale';
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}
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// ─── External availability ───
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async function checkExternalAvailability(partNumber) {
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var pn = partNumber || currentFilters.q || '';
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if (!pn) return;
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var section = document.getElementById('externalSection');
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var results = document.getElementById('externalResults');
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section.style.display = 'block';
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results.innerHTML = '<p>Buscando en bodegas...</p>';
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var data = await apiFetch(API + '/catalog/external-availability/' + encodeURIComponent(pn));
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if (!data || !data.data || !data.data.length) {
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results.innerHTML = '<p>No se encontraron resultados externos para "' + escHtml(pn) + '"</p>';
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return;
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}
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results.innerHTML = '<ul>' + data.data.map(function (r) {
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return '<li><strong>' + escHtml(r.name || r.part_number || pn) + '</strong> — Stock: ' + (r.stock || 'N/A') + '</li>';
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}).join('') + '</ul>';
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}
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// ─── Helpers ───
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function fmt(n) { return (parseFloat(n) || 0).toFixed(2); }
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function escHtml(s) { if (!s) return ''; var d = document.createElement('div'); d.textContent = s; return d.innerHTML; }
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// ─── Search input ───
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var searchInput = document.getElementById('searchInput');
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var searchTimeout = null;
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searchInput.addEventListener('input', function () {
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clearTimeout(searchTimeout);
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searchTimeout = setTimeout(function () {
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currentFilters.q = searchInput.value.trim();
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loadCatalog(1, currentFilters);
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}, 350);
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});
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searchInput.addEventListener('keydown', function (e) {
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if (e.key === 'Enter') {
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e.preventDefault();
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clearTimeout(searchTimeout);
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currentFilters.q = searchInput.value.trim();
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loadCatalog(1, currentFilters);
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}
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});
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// ─── Expose globals for inline handlers ───
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window._addToCart = function (id) {
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var it = window._catalogItems && window._catalogItems[id];
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if (it) addToCart(it);
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};
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window._loadPage = function (p) { loadCatalog(p); };
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window._removeFilter = function (key) { delete currentFilters[key]; loadCatalog(1); loadCategories(); loadBrands(); };
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window._filterCat = function (id) { if (id) currentFilters.category = id; else delete currentFilters.category; loadCatalog(1); loadCategories(); };
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window._filterBrand = function (name) { if (name) currentFilters.brand = name; else delete currentFilters.brand; loadCatalog(1); loadBrands(); };
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window._removeFromCart = removeFromCart;
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window._updateQty = updateQuantity;
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window.toggleCart = toggleCart;
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window.goToCheckout = goToCheckout;
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window.clearCart = clearCartFn;
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window.checkExternalAvailability = checkExternalAvailability;
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// ─── Init ───
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renderCart();
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loadCatalog(1, {});
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loadCategories();
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loadBrands();
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})();
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