image compression, initial checkout(?

.gitignore

@@ -1,3 +1,4 @@
 pos_database.db
 ScannerGO/ScannerGO-*
 ScannerGO/config.json
+DataToolsGO/imageTools-*

DataToolsGO/build.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+
+# Define binary names
+LINUX_BIN="imageTools-linux"
+LINUX_ARM_BIN="imageTools-linuxARMv7"
+WINDOWS_BIN="imageTools-windows.exe"
+
+echo "Starting build process..."
+
+# Build for Linux (64-bit)
+echo "Building for Linux..."
+GOOS=linux GOARCH=amd64 go build -o "$LINUX_BIN" main.go
+
+if [ $? -eq 0 ]; then
+    echo "Successfully built: $LINUX_BIN"
+else
+    echo "Failed to build Linux binary"
+    exit 1
+fi
+
+# Build for Windows (64-bit)
+echo "Building for Windows..."
+GOOS=windows GOARCH=amd64 go build -o "$WINDOWS_BIN" main.go
+
+if [ $? -eq 0 ]; then
+    echo "Successfully built: $WINDOWS_BIN"
+else
+    echo "Failed to build Windows binary"
+    exit 1
+fi
+
+# Build for Linux ARM (ARMv7)
+echo "Building for Linux ARMv7..."
+GOOS=linux GOARCH=arm GOARM=7 go build -o "$LINUX_ARM_BIN" main.go
+if [ $? -eq 0 ]; then
+    echo "Successfully built: $LINUX_ARM_BIN"
+else
+    echo "Failed to build Linux ARMv7 binary"
+    exit 1
+fi
+
+echo "Build complete."

DataToolsGO/go.mod

@@ -0,0 +1,5 @@
+module dataTools
+
+go 1.25.7
+
+require github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646

DataToolsGO/go.sum

@@ -0,0 +1,2 @@
+github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646 h1:zYyBkD/k9seD2A7fsi6Oo2LfFZAehjjQMERAvZLEDnQ=
+github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646/go.mod h1:jpp1/29i3P1S/RLdc7JQKbRpFeM1dOBd8T9ki5s+AY8=

DataToolsGO/main.go

@@ -0,0 +1,84 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"image"
+	"image/jpeg"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/nfnt/resize"
+)
+
+func main() {
+	// Command line arguments
+	dirPath := flag.String("dir", "./", "Directory containing images")
+	maxWidth := flag.Uint("width", 1000, "Maximum width for resizing")
+	quality := flag.Int("quality", 75, "JPEG quality (1-100)")
+	flag.Parse()
+
+	files, err := os.ReadDir(*dirPath)
+	if err != nil {
+		fmt.Printf("Error reading directory: %v\n", err)
+		return
+	}
+
+	fmt.Printf("Processing images in %s (Max Width: %d, Quality: %d)\n", *dirPath, *maxWidth, *quality)
+
+	for _, file := range files {
+		if file.IsDir() {
+			continue
+		}
+
+		ext := strings.ToLower(filepath.Ext(file.Name()))
+		if ext != ".jpg" && ext != ".jpeg" && ext != ".png" {
+			continue
+		}
+
+		filePath := filepath.Join(*dirPath, file.Name())
+		processImage(filePath, *maxWidth, *quality)
+	}
+
+	fmt.Println("Done. Your storage can finally breathe again.")
+}
+
+func processImage(path string, maxWidth uint, quality int) {
+	file, err := os.Open(path)
+	if err != nil {
+		fmt.Printf("Failed to open %s: %v\n", path, err)
+		return
+	}
+
+	img, _, err := image.Decode(file)
+	file.Close()
+	if err != nil {
+		fmt.Printf("Failed to decode %s: %v\n", path, err)
+		return
+	}
+
+	// Only resize if original is wider than maxWidth
+	bounds := img.Bounds()
+	var finalImg image.Image
+	if uint(bounds.Dx()) > maxWidth {
+		finalImg = resize.Resize(maxWidth, 0, img, resize.Lanczos3)
+		fmt.Printf("Resized and compressed: %s\n", filepath.Base(path))
+	} else {
+		finalImg = img
+		fmt.Printf("Compressed (no resize needed): %s\n", filepath.Base(path))
+	}
+
+	// Overwrite the original file
+	out, err := os.Create(path)
+	if err != nil {
+		fmt.Printf("Failed to create output file %s: %v\n", path, err)
+		return
+	}
+	defer out.Close()
+
+	err = jpeg.Encode(out, finalImg, &jpeg.Options{Quality: quality})
+	if err != nil {
+		fmt.Printf("Failed to encode %s: %v\n", path, err)
+	}
+}

app.py

@@ -112,7 +112,8 @@ def login():
 @app.route('/logout')
 @login_required
 def logout():
-    logout_user(); return redirect(url_for('login'))
+    logout_user()
+    return redirect(url_for('login'))
 
 @app.route('/')
 @login_required
@@ -121,7 +122,13 @@ def index():
         products = conn.execute('SELECT * FROM products').fetchall()
     return render_template('index.html', products=products, user=current_user)
 
-@app.route('/upsert', methods=['POST'])
+@app.route("/checkout")
+@login_required
+def checkout():
+    return render_template("checkout.html", user=current_user)
+
+
+@app.route("/upsert", methods=["POST"])
 @login_required
 def upsert():
     d = request.form
@@ -161,10 +168,11 @@ def scan():
         return jsonify({"status": "error", "message": "empty barcode"}), 400
     
     with sqlite3.connect(DB_FILE) as conn:
-        p = conn.execute('SELECT * FROM products WHERE barcode = ?', (barcode,)).fetchone()
+        # Specifically select the 4 columns the code expects
+        p = conn.execute('SELECT barcode, name, price, image_url FROM products WHERE barcode = ?', (barcode,)).fetchone()
     
-    # 1. Product exists in local Database
     if p:
+        # Now this will always have exactly 4 values, regardless of DB changes
         barcode_val, name, price, image_path = p
         
         # Image recovery logic for missing local files
@@ -266,8 +274,8 @@ def upload_image():
     barcode = request.form['barcode']
     if file.filename == '' or not barcode:
         return jsonify({"error": "Invalid data"}), 400
-    ext = mimetypes.guess_extension(file.mimetype) or '.jpg'
-    filename = f"{barcode}{ext}"
+
+    filename = f"{barcode}.jpg"
     filepath = os.path.join(CACHE_DIR, filename)
     file.save(filepath)
     timestamp = int(time.time())

templates/checkout.html

@@ -0,0 +1,381 @@
+<!DOCTYPE html>
+<html lang="es" data-theme="light">
+
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>SekiPOS - Caja</title>
+    <link rel="shortcut icon" href="./static/favicon.png" type="image/x-icon">
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.min.css" rel="stylesheet">
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/4.0.1/socket.io.js"></script>
+    <style>
+        :root {
+            --bg: #ebedef;
+            --card-bg: #ffffff;
+            --text-main: #2e3338;
+            --text-muted: #4f5660;
+            --border: #e3e5e8;
+            --navbar-bg: #ffffff;
+            --accent: #5865f2;
+            --accent-hover: #4752c4;
+            --input-bg: #e3e5e8;
+        }
+
+        [data-theme="dark"] {
+            --bg: #36393f;
+            --card-bg: #2f3136;
+            --text-main: #dcddde;
+            --text-muted: #b9bbbe;
+            --border: #202225;
+            --navbar-bg: #202225;
+            --input-bg: #202225;
+        }
+
+        body {
+            background: var(--bg);
+            color: var(--text-main);
+            font-family: "gg sans", "Segoe UI", sans-serif;
+            transition: background 0.2s, color 0.2s;
+            min-height: 100vh;
+        }
+
+        /* ── Navbar ── */
+        .navbar {
+            background: var(--navbar-bg) !important;
+            border-bottom: 1px solid var(--border);
+            transition: background 0.2s;
+        }
+
+        .navbar-brand {
+            color: var(--text-main) !important;
+            font-weight: 700;
+        }
+
+        /* ── Cards ── */
+        .cart-card,
+        .discord-card,
+        .modal-content {
+            background: var(--card-bg) !important;
+            color: var(--text-main);
+            border: 1px solid var(--border);
+            border-radius: 8px;
+            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
+        }
+
+        /* ── Product Preview (Matching Index) ── */
+        #display-img {
+            width: 100%;
+            max-width: 250px;
+            height: 250px;
+            object-fit: contain;
+            background: var(--bg);
+            border-radius: 8px;
+            padding: 10px;
+        }
+
+        /* ── Table Styling ── */
+        .table {
+            color: var(--text-main) !important;
+            --bs-table-bg: transparent;
+            --bs-table-border-color: var(--border);
+        }
+
+        .table thead th {
+            background: var(--bg);
+            color: var(--text-muted);
+            font-size: 0.75rem;
+            text-transform: uppercase;
+            border-bottom: 1px solid var(--border);
+        }
+
+        .table td {
+            border-bottom: 1px solid var(--border);
+            vertical-align: middle;
+        }
+
+        /* ── UI Elements ── */
+        .btn-accent {
+            background: var(--accent);
+            color: #fff;
+            border: none;
+        }
+
+        .btn-accent:hover {
+            background: var(--accent-hover);
+            color: #fff;
+        }
+
+        .form-control {
+            background: var(--input-bg);
+            color: var(--text-main);
+            border: none;
+        }
+
+        .form-control:focus {
+            background: var(--input-bg);
+            color: var(--text-main);
+            outline: 2px solid var(--accent);
+            box-shadow: none;
+        }
+
+        #grand-total {
+            color: var(--accent);
+            font-family: "gg sans", sans-serif;
+        }
+
+        .dropdown-menu {
+            background: var(--card-bg);
+            border: 1px solid var(--border);
+        }
+
+        .dropdown-item {
+            color: var(--text-main) !important;
+        }
+
+        .dropdown-item:hover {
+            background: var(--input-bg);
+        }
+
+        .btn-danger-discord {
+            background: var(--danger, #ed4245);
+            color: #fff;
+            border: none;
+            border-radius: 4px;
+            padding: 4px 8px;
+            transition: background 0.2s;
+        }
+
+        .btn-danger-discord:hover {
+            background: #c23235;
+            color: #fff;
+        }
+
+        [data-theme="dark"] .btn-close {
+            filter: invert(1) grayscale(100%) brightness(200%);
+        }
+
+        [data-theme="dark"] .table {
+            --bs-table-color: var(--text-main);
+            color: var(--text-main) !important;
+        }
+
+        [data-theme="dark"] .table thead th {
+            background: #292b2f;
+            color: var(--text-muted);
+        }
+
+        [data-theme="dark"] .text-muted {
+            color: var(--text-muted) !important;
+        }
+
+        /* Fix for the weight modal text */
+        [data-theme="dark"] .modal-body {
+            color: var(--text-main);
+        }
+    </style>
+</head>
+
+<body>
+    <nav class="navbar navbar-expand-md sticky-top px-3 mb-3">
+        <span class="navbar-brand">SekiPOS <small class="text-muted fw-normal"
+                style="font-size:0.65rem;">Caja</small></span>
+
+        <div class="ms-3">
+            <a href="/" class="btn btn-outline-primary btn-sm">
+                <i class="bi bi-box-seam me-1"></i>Inventario
+            </a>
+        </div>
+
+        <div class="ms-auto">
+            <div class="dropdown">
+                <button class="btn btn-accent dropdown-toggle" type="button" data-bs-toggle="dropdown"
+                    aria-expanded="false">
+                    <i class="bi bi-person-circle me-1"></i>
+                    <span class="d-none d-sm-inline">{{ user.username }}</span>
+                </button>
+                <ul class="dropdown-menu dropdown-menu-end shadow">
+                    <li>
+                        <button class="dropdown-item" onclick="toggleTheme()">
+                            <i class="bi bi-moon-stars me-2" id="theme-icon"></i>
+                            <span id="theme-label">Modo Oscuro</span>
+                        </button>
+                    </li>
+                    <li>
+                        <hr class="dropdown-divider" style="border-color: var(--border);">
+                    </li>
+                    <li>
+                        <a class="dropdown-item text-danger" href="/logout">
+                            <i class="bi bi-box-arrow-right me-2"></i>Salir
+                        </a>
+                    </li>
+                </ul>
+            </div>
+        </div>
+    </nav>
+
+    <div class="container-fluid">
+        <div class="row g-3">
+            <div class="col-md-8">
+                <div class="cart-card p-3 shadow-sm">
+                    <h4><i class="bi bi-cart3"></i> Carrito</h4>
+                    <table class="table mt-3" id="cart-table">
+                        <thead>
+                            <tr>
+                                <th>Producto</th>
+                                <th>Precio/U</th>
+                                <th>Cant/Peso</th>
+                                <th>Subtotal</th>
+                                <th></th>
+                            </tr>
+                        </thead>
+                        <tbody id="cart-items">
+                        </tbody>
+                    </table>
+                </div>
+            </div>
+
+            <div class="col-md-4">
+                <div class="discord-card p-3 mb-3 text-center shadow-sm">
+                    <p class="mb-1 fw-semibold text-uppercase" style="color:var(--text-muted); font-size:0.7rem;">Último
+                        Escaneado</p>
+                    <img id="display-img" src="./static/placeholder.png" class="mb-2" alt="product">
+                    <h6 id="display-name" class="mb-0 text-truncate">Esperando scan...</h6>
+                    <small id="display-barcode" class="text-muted font-monospace" style="font-size: 0.7rem;"></small>
+                </div>
+
+                <div class="total-banner text-center mb-3">
+                    <div class="total-banner text-center mb-3">
+                        <h2 class="mb-0">TOTAL</h2>
+                        <h1 id="grand-total" style="font-size: 3.5rem; font-weight: 800;">$0</h1>
+                    </div>
+                    <button class="btn btn-success w-100 btn-lg mb-2" onclick="processSale()">
+                        <i class="bi bi-cash-coin"></i> COBRAR
+                    </button>
+                    <button class="btn btn-danger w-100" onclick="clearCart()">Vaciar</button>
+                </div>
+            </div>
+        </div>
+
+        <div class="modal fade" id="weightModal" tabindex="-1" data-bs-backdrop="static">
+            <div class="modal-dialog modal-dialog-centered">
+                <div class="modal-content">
+                    <div class="modal-header">
+                        <h5>Ingresar Peso (kg)</h5>
+                    </div>
+                    <div class="modal-body">
+                        <input type="number" id="weight-input" class="form-control form-control-lg" step="0.001"
+                            placeholder="0.000">
+                    </div>
+                    <div class="modal-footer">
+                        <button class="btn btn-primary w-100" onclick="confirmWeight()">Agregar</button>
+                    </div>
+                </div>
+            </div>
+        </div>
+
+        <script>
+            const socket = io();
+            let cart = [];
+            let pendingProduct = null;
+            const clp = new Intl.NumberFormat('es-CL', { style: 'currency', currency: 'CLP', minimumFractionDigits: 0 });
+
+            socket.on('new_scan', (product) => {
+                // Update the Preview Card
+                document.getElementById('display-name').innerText = product.name;
+                document.getElementById('display-barcode').innerText = product.barcode;
+                document.getElementById('display-img').src = product.image || './static/placeholder.png';
+
+                if (product.unit === 'kg') {
+                    pendingProduct = product;
+                    new bootstrap.Modal('#weightModal').show();
+                    setTimeout(() => document.getElementById('weight-input').focus(), 500);
+                } else {
+                    addToCart(product, 1);
+                }
+            });
+
+            socket.on('scan_error', (data) => {
+                if (confirm("Producto no encontrado. ¿Deseas crearlo?")) {
+                    window.location.href = `/?barcode=${data.barcode}`;
+                }
+            });
+
+            function confirmWeight() {
+                const weight = parseFloat(document.getElementById('weight-input').value);
+                if (weight > 0) {
+                    addToCart(pendingProduct, weight);
+                    bootstrap.Modal.getInstance('#weightModal').hide();
+                    document.getElementById('weight-input').value = '';
+                }
+            }
+
+            function addToCart(product, qty) {
+                const subtotal = product.price * qty;
+                cart.push({ ...product, qty, subtotal });
+                renderCart();
+            }
+
+            function renderCart() {
+                const tbody = document.getElementById('cart-items');
+                tbody.innerHTML = '';
+                let total = 0;
+
+                cart.forEach((item, index) => {
+                    total += item.subtotal;
+                    const row = document.createElement('tr');
+                    row.innerHTML = `
+            <td>${item.name}</td>
+            <td>${clp.format(item.price)}</td>
+            <td>${item.qty} ${item.unit === 'kg' ? 'kg' : 'u'}</td>
+            <td>${clp.format(item.subtotal)}</td>
+            <td>
+                <button class="btn-danger-discord btn-sm" onclick="removeItem(${index}, '${item.name}')">
+                    <i class="bi bi-trash"></i>
+                </button>
+            </td>
+        `;
+                    tbody.appendChild(row);
+                });
+                document.getElementById('grand-total').innerText = clp.format(total);
+            }
+
+            // Updated removeItem with confirmation prompt
+            function removeItem(idx, name) {
+                if (confirm(`¿Quitar ${name} del carrito?`)) {
+                    cart.splice(idx, 1);
+                    renderCart();
+                }
+            }
+
+            function clearCart() { cart = []; renderCart(); }
+            function processSale() { alert("Venta procesada con éxito"); clearCart(); }
+
+            function applyTheme(t) {
+                document.documentElement.setAttribute('data-theme', t);
+                const isDark = t === 'dark';
+                const themeIcon = document.getElementById('theme-icon');
+                const themeLabel = document.getElementById('theme-label');
+
+                if (themeIcon) themeIcon.className = isDark ? 'bi bi-sun me-2' : 'bi bi-moon-stars me-2';
+                if (themeLabel) themeLabel.innerText = isDark ? 'Modo Claro' : 'Modo Oscuro';
+
+                localStorage.setItem('theme', t);
+            }
+
+            function toggleTheme() {
+                const current = document.documentElement.getAttribute('data-theme');
+                const next = current === 'dark' ? 'light' : 'dark';
+                applyTheme(next);
+            }
+
+            // Initialize on load
+            (function initTheme() {
+                const savedTheme = localStorage.getItem('theme') || 'light';
+                applyTheme(savedTheme);
+            })();
+        </script>
+        <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
+</body>
+
+</html>

templates/index.html

@@ -261,7 +261,11 @@
     <nav class="navbar navbar-expand-md sticky-top px-3 mb-3">
         <span class="navbar-brand">SekiPOS <small class="text-muted fw-normal"
                 style="font-size:0.65rem;">v1.6</small></span>
-
+        <div class="ms-3">
+            <a href="/checkout" class="btn btn-outline-primary btn-sm">
+                <i class="bi bi-cart-fill me-1"></i>Ir a Caja
+            </a>
+        </div>
         <!-- Always-visible dropdown on the right -->
         <div class="ms-auto">
             <div class="dropdown">
@@ -714,11 +718,17 @@
             const file = input.files[0];
             if (!file) return;
 
-            const formData = new FormData();
-            formData.append('image', file);
-            formData.append('barcode', barcode);
+            // Show a "loading" state if you feel like being fancy
+            const originalBtnContent = document.querySelector('button[onclick*="camera-input"]').innerHTML;
+            document.querySelector('button[onclick*="camera-input"]').innerHTML = '<span class="spinner-border spinner-border-sm"></span>';
 
             try {
+                const compressedBlob = await compressImage(file, 800, 0.7); // Max 800px, 70% quality
+
+                const formData = new FormData();
+                formData.append('image', compressedBlob, `photo_${barcode}.jpg`);
+                formData.append('barcode', barcode);
+
                 const res = await fetch('/upload_image', {
                     method: 'POST',
                     body: formData
@@ -733,10 +743,46 @@
                 }
             } catch (err) {
                 console.error(err);
-                alert("Error de conexión al subir imagen.");
+                alert("Error procesando imagen.");
+            } finally {
+                document.querySelector('button[onclick*="camera-input"]').innerHTML = originalBtnContent;
             }
         }
 
+        // The compression engine
+        function compressImage(file, maxWidth, quality) {
+            return new Promise((resolve, reject) => {
+                const reader = new FileReader();
+                reader.readAsDataURL(file);
+                reader.onload = event => {
+                    const img = new Image();
+                    img.src = event.target.result;
+                    img.onload = () => {
+                        const canvas = document.createElement('canvas');
+                        let width = img.width;
+                        let height = img.height;
+
+                        if (width > maxWidth) {
+                            height = Math.round((height * maxWidth) / width);
+                            width = maxWidth;
+                        }
+
+                        canvas.width = width;
+                        canvas.height = height;
+
+                        const ctx = canvas.getContext('2d');
+                        ctx.drawImage(img, 0, 0, width, height);
+
+                        canvas.toBlob(blob => {
+                            resolve(blob);
+                        }, 'image/jpeg', quality);
+                    };
+                    img.onerror = err => reject(err);
+                };
+                reader.onerror = err => reject(err);
+            });
+        }
+
         function applyBulkPrice() {
             const price = document.getElementById('bulk-price-input').value;
             const checked = document.querySelectorAll('.product-checkbox:checked');