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feat(core): implement sqlite database, express api, and openfoodfacts barcode integration

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me0nline
2026-10-10 22:36:25 +02:00
parent 809c65ba67
commit 8c7fa79b0c
7 changed files with 1860 additions and 0 deletions
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.gitignore
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node_modules/
npm-debug.log
data/*.db
data/*.db-journal
.env
.DS_Store
barcode.js
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/**
* Open Food Facts Barcode API integration
* Extracts product name, brand, package quantity & unit, image, and category.
* Intentionally omits macro nutrients to keep interface clean & fast.
*/
function parseQuantityString(quantityStr) {
if (!quantityStr || typeof quantityStr !== 'string') {
return { quantity: 1, unit: 'pcs' };
}
const clean = quantityStr.trim().toLowerCase();
// Pattern: e.g. "250g", "250 g", "1.5 kg", "1,5kg", "500 ml", "1 l", "1.5l", "6x100g", "4 x 125 g"
// Multi-pack: e.g. 6 x 100 g -> 600 g or total 6 pcs
const multiMatch = clean.match(/^(\d+)\s*[xX*]\s*([\d.,]+)\s*([a-zA-Z%]+)?/);
if (multiMatch) {
const count = parseInt(multiMatch[1], 10);
const itemQty = parseFloat(multiMatch[2].replace(',', '.'));
const itemUnit = multiMatch[3] ? normalizeUnit(multiMatch[3]) : 'g';
if (!isNaN(count) && !isNaN(itemQty)) {
return {
quantity: Math.round(count * itemQty),
unit: itemUnit,
raw: quantityStr
};
}
}
// Single quantity: e.g. "250 g", "500ml", "1kg", "0.75 l"
const singleMatch = clean.match(/^([\d.,]+)\s*([a-zA-Z%]+)?/);
if (singleMatch) {
let num = parseFloat(singleMatch[1].replace(',', '.'));
let unit = singleMatch[2] ? normalizeUnit(singleMatch[2]) : 'g';
// Normalize kg to g or l to ml if preferred, or keep as is. Grams / ml are most convenient for fine adjustments!
if (unit === 'kg') {
num = Math.round(num * 1000);
unit = 'g';
} else if (unit === 'l' || unit === 'liter' || unit === 'litre') {
num = Math.round(num * 1000);
unit = 'ml';
}
if (!isNaN(num) && num > 0) {
return {
quantity: num,
unit: unit,
raw: quantityStr
};
}
}
return { quantity: 1, unit: 'pcs', raw: quantityStr };
}
function normalizeUnit(u) {
const unit = u.toLowerCase().trim();
if (unit === 'g' || unit === 'gr' || unit === 'gram' || unit === 'gramm' || unit === 'grams') return 'g';
if (unit === 'kg' || unit === 'kilogram' || unit === 'kilo') return 'kg';
if (unit === 'ml' || unit === 'milliliter') return 'ml';
if (unit === 'l' || unit === 'liter' || unit === 'litre') return 'l';
if (unit === 'cl' || unit === 'centiliter') return 'ml';
if (unit === 'dl' || unit === 'deciliter') return 'ml';
if (unit === 'oz') return 'g';
if (unit === 'stk' || unit === 'stck' || unit === 'stueck' || unit === 'stück' || unit === 'pcs' || unit === 'pc' || unit === 'piece' || unit === 'pieces') return 'pcs';
if (unit === 'pkg' || unit === 'pack' || unit === 'packung' || unit === 'pkt') return 'pack';
if (unit === 'fl' || unit === 'flasche' || unit === 'bottle') return 'pcs';
if (unit === 'dose' || unit === 'can') return 'pcs';
return unit || 'g';
}
function inferCategory(categoriesTags = [], productName = '', categoriesStr = '') {
const combined = [
...(Array.isArray(categoriesTags) ? categoriesTags : []),
productName,
categoriesStr
].join(' ').toLowerCase();
if (/getränk|beverage|drink|saft|juice|cola|soda|wasser|water|bier|beer|wein|wine|milchshake|smoothie|tee|tea|energy|sirup/i.test(combined)) {
return 'Beverages';
}
if (/milch|käse|kaese|cheese|dairy|joghurt|yogurt|butter|quark|sahne|creme|schmand|mozzarella|parmesan|gouda|cheddar|feta|camembert|pudding/i.test(combined)) {
return 'Dairy & Cheese';
}
if (/fleisch|meat|wurst|sausage|schinken|ham|hähnchen|chicken|rind|beef|schwein|pork|bacon|salami|speck|fisch|fish|lachs|salmon|thunfisch|tuna|seafood|garnelen/i.test(combined)) {
return 'Meat & Fish';
}
if (/sauce|soße|senf|mustard|ketchup|mayo|mayonnaise|dressing|pesto|dip|essig|vinegar|öl|oil|gewürz|spice|curry|tabasco|remoulade/i.test(combined)) {
return 'Sauces & Condiments';
}
if (/gemüse|vegetable|obst|fruit|salat|salad|tomate|tomato|gurke|cucumber|apfel|apple|banane|banana|zwiebel|onion|karotte|carrot|kartoffel|potato|beeren|berry|zitrus|citrus|spinat|spinach/i.test(combined)) {
return 'Produce';
}
if (/brot|bread|toast|brötchen|bun|teig|dough|hefe|yeast|croissant|tortilla|wrap/i.test(combined)) {
return 'Bakery';
}
if (/snack|schokolade|chocolate|chips|keks|cookie|süß|sweet|candy|nuss|nut|eis|ice cream/i.test(combined)) {
return 'Snacks & Sweets';
}
if (/reste|leftover|fertiggericht|meal|pizza|suppen|soup|pasta|nudeln|noodle/i.test(combined)) {
return 'Prepared & Leftovers';
}
return 'General';
}
async function lookupBarcode(barcode) {
if (!barcode || typeof barcode !== 'string') return null;
const cleanBarcode = barcode.trim();
if (!cleanBarcode) return null;
try {
const url = `https://world.openfoodfacts.org/api/v2/product/${encodeURIComponent(cleanBarcode)}.json?fields=product_name,product_name_de,product_name_en,brands,quantity,categories_tags,categories,image_front_small_url,image_url,image_front_url`;
const controller = new AbortController();
const timeout = setTimeout(() => controller.abort(), 6000); // 6s timeout
const res = await fetch(url, {
headers: {
'User-Agent': 'Fridger - Fridge Inventory Manager (https://gitea.eibl.tech/me0nline/Fridger)'
},
signal: controller.signal
});
clearTimeout(timeout);
if (!res.ok) {
return null;
}
const data = await res.json();
if (data.status !== 1 || !data.product) {
return null;
}
const p = data.product;
const name = p.product_name_de || p.product_name || p.product_name_en || '';
const brand = p.brands || '';
const parsedQty = parseQuantityString(p.quantity);
const category = inferCategory(p.categories_tags, name, p.categories);
const imageUrl = p.image_front_small_url || p.image_front_url || p.image_url || '';
return {
found: true,
barcode: cleanBarcode,
name: name.trim() || 'Unknown Product',
brand: brand.trim(),
quantity: parsedQty.quantity,
initial_quantity: parsedQty.quantity,
unit: parsedQty.unit,
category: category,
image_url: imageUrl,
raw_quantity: p.quantity || ''
};
} catch (err) {
console.warn(`Barcode lookup error for ${cleanBarcode}:`, err.message);
return null;
}
}
module.exports = {
lookupBarcode,
parseQuantityString,
inferCategory
};
db.js
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const { DatabaseSync } = require('node:sqlite');
const path = require('node:path');
const fs = require('node:fs');
const DATA_DIR = process.env.FRIDGER_DATA_DIR || path.join(__dirname, 'data');
if (!fs.existsSync(DATA_DIR)) {
fs.mkdirSync(DATA_DIR, { recursive: true });
}
const DB_PATH = process.env.FRIDGER_DB_PATH || path.join(DATA_DIR, 'fridger.db');
const db = new DatabaseSync(DB_PATH);
// Initialize Tables
db.exec(`
CREATE TABLE IF NOT EXISTS items (
id INTEGER PRIMARY KEY AUTOINCREMENT,
name TEXT NOT NULL,
barcode TEXT,
brand TEXT,
category TEXT DEFAULT 'General',
location TEXT DEFAULT 'Fridge - Middle Shelf',
quantity REAL NOT NULL,
initial_quantity REAL NOT NULL,
unit TEXT NOT NULL DEFAULT 'g',
expiry_date TEXT,
image_url TEXT,
notes TEXT,
is_opened INTEGER DEFAULT 0,
opened_at TEXT,
created_at TEXT DEFAULT (datetime('now', 'localtime')),
updated_at TEXT DEFAULT (datetime('now', 'localtime'))
);
CREATE TABLE IF NOT EXISTS activity_log (
id INTEGER PRIMARY KEY AUTOINCREMENT,
item_id INTEGER,
item_name TEXT,
action TEXT NOT NULL,
amount_change REAL,
unit TEXT,
timestamp TEXT DEFAULT (datetime('now', 'localtime')),
note TEXT
);
CREATE INDEX IF NOT EXISTS idx_items_barcode ON items(barcode);
CREATE INDEX IF NOT EXISTS idx_items_expiry ON items(expiry_date);
CREATE INDEX IF NOT EXISTS idx_items_category ON items(category);
`);
// Item functions
function getAllItems({ search = '', category = '', location = '', status = 'all' } = {}) {
let query = `SELECT * FROM items WHERE 1=1`;
const params = [];
if (search) {
query += ` AND (name LIKE ? OR brand LIKE ? OR barcode LIKE ? OR notes LIKE ?)`;
const s = `%${search}%`;
params.push(s, s, s, s);
}
if (category && category !== 'All') {
query += ` AND category = ?`;
params.push(category);
}
if (location && location !== 'All') {
query += ` AND location = ?`;
params.push(location);
}
const today = new Date().toISOString().slice(0, 10);
if (status === 'expired') {
query += ` AND expiry_date IS NOT NULL AND expiry_date != '' AND expiry_date < ?`;
params.push(today);
} else if (status === 'expiring_soon') {
const next3Days = new Date(Date.now() + 3 * 24 * 60 * 60 * 1000).toISOString().slice(0, 10);
query += ` AND expiry_date IS NOT NULL AND expiry_date != '' AND expiry_date >= ? AND expiry_date <= ?`;
params.push(today, next3Days);
} else if (status === 'fresh') {
const next3Days = new Date(Date.now() + 3 * 24 * 60 * 60 * 1000).toISOString().slice(0, 10);
query += ` AND (expiry_date IS NULL OR expiry_date = '' OR expiry_date > ?)`;
params.push(next3Days);
} else if (status === 'low') {
query += ` AND (quantity <= (initial_quantity * 0.25) OR quantity = 0)`;
}
query += ` ORDER BY
CASE
WHEN expiry_date IS NULL OR expiry_date = '' THEN 1
ELSE 0
END,
expiry_date ASC,
updated_at DESC`;
const stmt = db.prepare(query);
return stmt.all(...params);
}
function getItemById(id) {
const stmt = db.prepare(`SELECT * FROM items WHERE id = ?`);
return stmt.get(id);
}
function getItemByBarcode(barcode) {
const stmt = db.prepare(`SELECT * FROM items WHERE barcode = ? ORDER BY updated_at DESC LIMIT 1`);
return stmt.get(barcode);
}
function createItem(item) {
const initial_qty = Number(item.initial_quantity) || Number(item.quantity) || 1;
const current_qty = Number(item.quantity) ?? initial_qty;
const unit = (item.unit || 'g').trim();
const is_opened = item.is_opened ? 1 : 0;
const opened_at = is_opened ? (item.opened_at || new Date().toISOString().slice(0, 10)) : null;
const stmt = db.prepare(`
INSERT INTO items (
name, barcode, brand, category, location,
quantity, initial_quantity, unit, expiry_date,
image_url, notes, is_opened, opened_at
) VALUES (
?, ?, ?, ?, ?,
?, ?, ?, ?,
?, ?, ?, ?
)
`);
const result = stmt.run(
item.name,
item.barcode || null,
item.brand || null,
item.category || 'General',
item.location || 'Fridge - Middle Shelf',
current_qty,
initial_qty,
unit,
item.expiry_date || null,
item.image_url || null,
item.notes || null,
is_opened,
opened_at
);
const newId = result.lastInsertRowid;
// Log activity
logActivity({
item_id: newId,
item_name: item.name,
action: 'add',
amount_change: current_qty,
unit: unit,
note: `Added ${current_qty} ${unit}`
});
return getItemById(newId);
}
function updateItem(id, item) {
const existing = getItemById(id);
if (!existing) return null;
const qty = item.quantity !== undefined ? Number(item.quantity) : existing.quantity;
const init_qty = item.initial_quantity !== undefined ? Number(item.initial_quantity) : existing.initial_quantity;
const is_opened = item.is_opened !== undefined ? (item.is_opened ? 1 : 0) : existing.is_opened;
let opened_at = existing.opened_at;
if (is_opened && !existing.is_opened) {
opened_at = new Date().toISOString().slice(0, 10);
} else if (!is_opened) {
opened_at = null;
}
const stmt = db.prepare(`
UPDATE items SET
name = ?,
barcode = ?,
brand = ?,
category = ?,
location = ?,
quantity = ?,
initial_quantity = ?,
unit = ?,
expiry_date = ?,
image_url = ?,
notes = ?,
is_opened = ?,
opened_at = ?,
updated_at = datetime('now', 'localtime')
WHERE id = ?
`);
stmt.run(
item.name ?? existing.name,
item.barcode !== undefined ? item.barcode : existing.barcode,
item.brand !== undefined ? item.brand : existing.brand,
item.category ?? existing.category,
item.location ?? existing.location,
qty,
init_qty,
item.unit ?? existing.unit,
item.expiry_date !== undefined ? item.expiry_date : existing.expiry_date,
item.image_url !== undefined ? item.image_url : existing.image_url,
item.notes !== undefined ? item.notes : existing.notes,
is_opened,
opened_at,
id
);
if (qty !== existing.quantity) {
const diff = qty - existing.quantity;
logActivity({
item_id: id,
item_name: item.name || existing.name,
action: diff < 0 ? 'consume_part' : 'restock',
amount_change: diff,
unit: item.unit || existing.unit,
note: `Adjusted quantity from ${existing.quantity} to ${qty} ${item.unit || existing.unit}`
});
}
return getItemById(id);
}
function adjustQuantity(id, { newQuantity, delta, markOpened }) {
const item = getItemById(id);
if (!item) return null;
let targetQty = item.quantity;
if (newQuantity !== undefined) {
targetQty = Number(newQuantity);
} else if (delta !== undefined) {
targetQty = item.quantity + Number(delta);
}
// Prevent negative quantity
if (targetQty < 0) targetQty = 0;
const is_opened = markOpened !== undefined ? (markOpened ? 1 : 0) : (item.is_opened || (targetQty < item.initial_quantity ? 1 : 0));
const opened_at = is_opened && !item.opened_at ? new Date().toISOString().slice(0, 10) : item.opened_at;
const diff = targetQty - item.quantity;
const stmt = db.prepare(`
UPDATE items SET
quantity = ?,
is_opened = ?,
opened_at = ?,
updated_at = datetime('now', 'localtime')
WHERE id = ?
`);
stmt.run(targetQty, is_opened, opened_at, id);
logActivity({
item_id: id,
item_name: item.name,
action: targetQty === 0 ? 'consume_all' : (diff < 0 ? 'consume_part' : 'restock'),
amount_change: diff,
unit: item.unit,
note: targetQty === 0
? `Consumed all (${item.quantity} ${item.unit})`
: `${diff < 0 ? 'Consumed' : 'Added'} ${Math.abs(diff)} ${item.unit} (remaining: ${targetQty} ${item.unit})`
});
return getItemById(id);
}
function deleteItem(id) {
const item = getItemById(id);
if (!item) return false;
logActivity({
item_id: id,
item_name: item.name,
action: 'delete',
amount_change: -item.quantity,
unit: item.unit,
note: `Deleted item from fridge`
});
const stmt = db.prepare(`DELETE FROM items WHERE id = ?`);
stmt.run(id);
return true;
}
function logActivity({ item_id, item_name, action, amount_change, unit, note }) {
try {
const stmt = db.prepare(`
INSERT INTO activity_log (item_id, item_name, action, amount_change, unit, note)
VALUES (?, ?, ?, ?, ?, ?)
`);
stmt.run(item_id || null, item_name || null, action, amount_change || 0, unit || '', note || '');
} catch (err) {
console.error('Error logging activity:', err);
}
}
function getActivityLogs(limit = 50) {
const stmt = db.prepare(`SELECT * FROM activity_log ORDER BY timestamp DESC, id DESC LIMIT ?`);
return stmt.all(limit);
}
function getStats() {
const today = new Date().toISOString().slice(0, 10);
const next3Days = new Date(Date.now() + 3 * 24 * 60 * 60 * 1000).toISOString().slice(0, 10);
const totalStmt = db.prepare(`SELECT COUNT(*) as count FROM items`);
const total = totalStmt.get().count;
const expiredStmt = db.prepare(`
SELECT COUNT(*) as count FROM items
WHERE expiry_date IS NOT NULL AND expiry_date != '' AND expiry_date < ?
`);
const expired = expiredStmt.get(today).count;
const expiringSoonStmt = db.prepare(`
SELECT COUNT(*) as count FROM items
WHERE expiry_date IS NOT NULL AND expiry_date != '' AND expiry_date >= ? AND expiry_date <= ?
`);
const expiringSoon = expiringSoonStmt.get(today, next3Days).count;
const openedStmt = db.prepare(`SELECT COUNT(*) as count FROM items WHERE is_opened = 1`);
const opened = openedStmt.get().count;
const lowStmt = db.prepare(`
SELECT COUNT(*) as count FROM items
WHERE quantity <= (initial_quantity * 0.25) AND quantity > 0
`);
const low = lowStmt.get().count;
return {
total,
expired,
expiringSoon,
opened,
low,
fresh: total - expired - expiringSoon
};
}
module.exports = {
db,
getAllItems,
getItemById,
getItemByBarcode,
createItem,
updateItem,
adjustQuantity,
deleteItem,
getActivityLogs,
getStats
};
package-lock.json
Generated
+860
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}
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package.json
+23
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@@ -0,0 +1,23 @@
{
"name": "fridger",
"version": "1.0.0",
"description": "Smart Fridge Inventory & Management Web App with Barcode Scanner and Weight Tracking",
"main": "server.js",
"scripts": {
"start": "node server.js",
"dev": "node --watch server.js"
},
"dependencies": {
"cors": "^2.8.5",
"express": "^4.21.2"
},
"keywords": [
"fridge",
"inventory",
"barcode",
"openfoodfacts",
"docker"
],
"author": "me0nline",
"license": "MIT"
}
server.js
+376
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@@ -0,0 +1,376 @@
const express = require('express');
const cors = require('cors');
const path = require('node:path');
const db = require('./db');
const { lookupBarcode } = require('./barcode');
const app = express();
const PORT = process.env.PORT || 3000;
app.use(cors());
app.use(express.json());
app.use(express.static(path.join(__dirname, 'public')));
// Metadata definitions
const CATEGORIES = [
{ id: 'Dairy & Cheese', name: 'Dairy & Cheese', icon: 'milk', color: '#3b82f6' },
{ id: 'Meat & Fish', name: 'Meat & Fish', icon: 'beef', color: '#ef4444' },
{ id: 'Produce', name: 'Fruits & Veggies', icon: 'apple', color: '#10b981' },
{ id: 'Beverages', name: 'Drinks & Beverages', icon: 'cup-soda', color: '#06b6d4' },
{ id: 'Sauces & Condiments', name: 'Sauces & Condiments', icon: 'flask-conical', color: '#f59e0b' },
{ id: 'Bakery', name: 'Bakery & Bread', icon: 'croissant', color: '#d97706' },
{ id: 'Prepared & Leftovers', name: 'Leftovers & Meals', icon: 'utensils', color: '#8b5cf6' },
{ id: 'Snacks & Sweets', name: 'Snacks & Sweets', icon: 'cookie', color: '#ec4899' },
{ id: 'General', name: 'General / Other', icon: 'package', color: '#6b7280' }
];
const LOCATIONS = [
'Fridge - Top Shelf',
'Fridge - Middle Shelf',
'Fridge - Bottom Shelf',
'Fridge - Crisper Drawer',
'Fridge - Door Rack',
'Freezer - Top Drawer',
'Freezer - Bottom Drawer',
'Pantry / Cupboard'
];
const UNITS = [
{ id: 'g', label: 'Grams (g)', isWeight: true, step: 50 },
{ id: 'kg', label: 'Kilograms (kg)', isWeight: true, step: 0.1 },
{ id: 'ml', label: 'Milliliters (ml)', isVolume: true, step: 100 },
{ id: 'l', label: 'Liters (L)', isVolume: true, step: 0.5 },
{ id: 'pcs', label: 'Pieces (Stk / pcs)', isCount: true, step: 1 },
{ id: 'slices', label: 'Slices', isCount: true, step: 1 },
{ id: 'pack', label: 'Pack / Package', isCount: true, step: 1 }
];
// Health Check
app.get('/health', (req, res) => {
res.json({ status: 'ok', uptime: process.uptime(), timestamp: new Date().toISOString() });
});
// Meta endpoint
app.get('/api/meta', (req, res) => {
res.json({
categories: CATEGORIES,
locations: LOCATIONS,
units: UNITS
});
});
// Stats endpoint
app.get('/api/stats', (req, res) => {
try {
const stats = db.getStats();
res.json(stats);
} catch (err) {
res.status(500).json({ error: err.message });
}
});
// Activity logs
app.get('/api/activity', (req, res) => {
try {
const limit = parseInt(req.query.limit, 10) || 50;
const logs = db.getActivityLogs(limit);
res.json(logs);
} catch (err) {
res.status(500).json({ error: err.message });
}
});
// Barcode lookup
app.get('/api/barcode/:code', async (req, res) => {
const barcode = req.params.code;
if (!barcode) {
return res.status(400).json({ error: 'Barcode parameter is required' });
}
// First check if user previously stored an item with this barcode
const existing = db.getItemByBarcode(barcode);
if (existing) {
return res.json({
found: true,
fromLocal: true,
barcode: existing.barcode,
name: existing.name,
brand: existing.brand || '',
category: existing.category || 'General',
location: existing.location || 'Fridge - Middle Shelf',
quantity: existing.initial_quantity || existing.quantity,
initial_quantity: existing.initial_quantity || existing.quantity,
unit: existing.unit || 'g',
image_url: existing.image_url || ''
});
}
// Lookup in Open Food Facts
const product = await lookupBarcode(barcode);
if (product) {
return res.json({
...product,
fromLocal: false
});
}
res.status(404).json({
found: false,
barcode: barcode,
message: 'Barcode not found in database or Open Food Facts'
});
});
// List items
app.get('/api/items', (req, res) => {
try {
const { search, category, location, status } = req.query;
const items = db.getAllItems({ search, category, location, status });
res.json(items);
} catch (err) {
res.status(500).json({ error: err.message });
}
});
// Get single item
app.get('/api/items/:id', (req, res) => {
try {
const item = db.getItemById(req.params.id);
if (!item) return res.status(404).json({ error: 'Item not found' });
res.json(item);
} catch (err) {
res.status(500).json({ error: err.message });
}
});
// Create item
app.post('/api/items', (req, res) => {
try {
const { name, quantity } = req.body;
if (!name || name.trim() === '') {
return res.status(400).json({ error: 'Item name is required' });
}
if (quantity === undefined || isNaN(Number(quantity)) || Number(quantity) < 0) {
return res.status(400).json({ error: 'Valid quantity is required' });
}
const item = db.createItem(req.body);
res.status(201).json(item);
} catch (err) {
res.status(500).json({ error: err.message });
}
});
// Update item
app.put('/api/items/:id', (req, res) => {
try {
const item = db.updateItem(req.params.id, req.body);
if (!item) return res.status(404).json({ error: 'Item not found' });
res.json(item);
} catch (err) {
res.status(500).json({ error: err.message });
}
});
// Quick adjust quantity (grams / count / delta / slider)
app.patch('/api/items/:id/quantity', (req, res) => {
try {
const { newQuantity, delta, markOpened } = req.body;
if (newQuantity === undefined && delta === undefined) {
return res.status(400).json({ error: 'Either newQuantity or delta must be provided' });
}
const item = db.adjustQuantity(req.params.id, { newQuantity, delta, markOpened });
if (!item) return res.status(404).json({ error: 'Item not found' });
res.json(item);
} catch (err) {
res.status(500).json({ error: err.message });
}
});
// Delete item
app.delete('/api/items/:id', (req, res) => {
try {
const success = db.deleteItem(req.params.id);
if (!success) return res.status(404).json({ error: 'Item not found' });
res.json({ success: true, message: 'Item removed' });
} catch (err) {
res.status(500).json({ error: err.message });
}
});
// Seed sample fridge data if empty
app.post('/api/seed', (req, res) => {
try {
const existing = db.getAllItems();
if (existing.length > 0 && !req.query.force) {
return res.json({ message: 'Fridge already contains items', count: existing.length });
}
const today = new Date();
const addDays = (d) => {
const target = new Date(today.getTime() + d * 24 * 60 * 60 * 1000);
return target.toISOString().slice(0, 10);
};
const samples = [
{
name: 'Gouda Cheese (Jung)',
brand: 'Milbona',
barcode: '4056489123456',
category: 'Dairy & Cheese',
location: 'Fridge - Middle Shelf',
quantity: 200,
initial_quantity: 400,
unit: 'g',
is_opened: 1,
opened_at: addDays(-2),
expiry_date: addDays(6),
notes: 'Opened, about half remaining for sandwiches'
},
{
name: 'Whole Milk 3.5%',
brand: 'Weihenstephan',
barcode: '4008452023451',
category: 'Dairy & Cheese',
location: 'Fridge - Door Rack',
quantity: 650,
initial_quantity: 1000,
unit: 'ml',
is_opened: 1,
opened_at: addDays(-1),
expiry_date: addDays(3),
notes: 'Carton opened yesterday'
},
{
name: 'Organic Greek Yogurt',
brand: 'Andechser Natur',
barcode: '4005040001234',
category: 'Dairy & Cheese',
location: 'Fridge - Top Shelf',
quantity: 500,
initial_quantity: 500,
unit: 'g',
is_opened: 0,
expiry_date: addDays(12),
notes: 'Unopened 500g cup'
},
{
name: 'Chicken Breast Fillet',
brand: 'Bauerngut',
barcode: '4012345678901',
category: 'Meat & Fish',
location: 'Fridge - Bottom Shelf',
quantity: 350,
initial_quantity: 400,
unit: 'g',
is_opened: 1,
opened_at: addDays(0),
expiry_date: addDays(1),
notes: 'Cook today or freeze!'
},
{
name: 'Fresh Cherry Tomatoes',
brand: 'Bio',
category: 'Produce',
location: 'Fridge - Crisper Drawer',
quantity: 180,
initial_quantity: 250,
unit: 'g',
is_opened: 1,
expiry_date: addDays(4),
notes: 'Sweet snack tomatoes'
},
{
name: 'Dijon Mustard',
brand: 'Maille',
barcode: '3036810200028',
category: 'Sauces & Condiments',
location: 'Fridge - Door Rack',
quantity: 140,
initial_quantity: 215,
unit: 'g',
is_opened: 1,
expiry_date: addDays(90),
notes: 'In door rack'
},
{
name: 'Butter (Irish Pure)',
brand: 'Kerrygold',
barcode: '5011010001018',
category: 'Dairy & Cheese',
location: 'Fridge - Door Rack',
quantity: 190,
initial_quantity: 250,
unit: 'g',
is_opened: 1,
expiry_date: addDays(25),
notes: 'In butter dish'
},
{
name: 'Homemade Pasta Bolognese',
brand: '',
category: 'Prepared & Leftovers',
location: 'Fridge - Top Shelf',
quantity: 1,
initial_quantity: 1,
unit: 'pack',
is_opened: 1,
opened_at: addDays(-1),
expiry_date: addDays(1),
notes: 'Glass container, 1 portion'
},
{
name: 'Orange Juice 100%',
brand: 'Innocent',
barcode: '5038862112345',
category: 'Beverages',
location: 'Fridge - Door Rack',
quantity: 900,
initial_quantity: 900,
unit: 'ml',
is_opened: 0,
expiry_date: addDays(14)
}
];
for (const sample of samples) {
db.createItem(sample);
}
res.json({ message: 'Seed complete', created: samples.length });
} catch (err) {
res.status(500).json({ error: err.message });
}
});
// Catch-all route to serve the Single Page Application
app.get('*', (req, res) => {
res.sendFile(path.join(__dirname, 'public', 'index.html'));
});
// Start Server
if (require.main === module) {
// Check if initial seed is needed on first launch
const items = db.getAllItems();
if (items.length === 0) {
console.log('Fridge is empty. Pre-seeding sample items for initial experience...');
// Seed initial items
const today = new Date();
const addDays = (d) => new Date(today.getTime() + d * 24 * 60 * 60 * 1000).toISOString().slice(0, 10);
[
{ name: 'Gouda Cheese', brand: 'Milbona', barcode: '4056489123456', category: 'Dairy & Cheese', location: 'Fridge - Middle Shelf', quantity: 200, initial_quantity: 400, unit: 'g', is_opened: 1, expiry_date: addDays(5), notes: 'Half pack left' },
{ name: 'Fresh Milk 3.5%', brand: 'Weihenstephan', barcode: '4008452023451', category: 'Dairy & Cheese', location: 'Fridge - Door Rack', quantity: 700, initial_quantity: 1000, unit: 'ml', is_opened: 1, expiry_date: addDays(3), notes: 'Opened' },
{ name: 'Butter', brand: 'Kerrygold', barcode: '5011010001018', category: 'Dairy & Cheese', location: 'Fridge - Door Rack', quantity: 210, initial_quantity: 250, unit: 'g', is_opened: 1, expiry_date: addDays(20) },
{ name: 'Chicken Breast', brand: 'Bio', category: 'Meat & Fish', location: 'Fridge - Bottom Shelf', quantity: 400, initial_quantity: 400, unit: 'g', is_opened: 0, expiry_date: addDays(2), notes: 'Cook soon' },
{ name: 'Cherry Tomatoes', category: 'Produce', location: 'Fridge - Crisper Drawer', quantity: 180, initial_quantity: 250, unit: 'g', is_opened: 1, expiry_date: addDays(4) },
{ name: 'Dijon Mustard', brand: 'Maille', barcode: '3036810200028', category: 'Sauces & Condiments', location: 'Fridge - Door Rack', quantity: 150, initial_quantity: 215, unit: 'g', is_opened: 1, expiry_date: addDays(60) }
].forEach(item => db.createItem(item));
}
app.listen(PORT, '0.0.0.0', () => {
console.log(`🧊 Fridger server running at http://0.0.0.0:${PORT}`);
});
}
module.exports = app;
test.js
+77
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@@ -0,0 +1,77 @@
const assert = require('node:assert');
const db = require('./db');
const { parseQuantityString, inferCategory } = require('./barcode');
console.log('🧪 Running Fridger Backend Unit Tests...');
// 1. Test quantity parsing
console.log('1. Testing quantity parsing...');
assert.strictEqual(parseQuantityString('250 g').quantity, 250);
assert.strictEqual(parseQuantityString('250 g').unit, 'g');
assert.strictEqual(parseQuantityString('1.5 kg').quantity, 1500);
assert.strictEqual(parseQuantityString('1.5 kg').unit, 'g');
assert.strictEqual(parseQuantityString('500ml').quantity, 500);
assert.strictEqual(parseQuantityString('500ml').unit, 'ml');
assert.strictEqual(parseQuantityString('6 x 100g').quantity, 600);
assert.strictEqual(parseQuantityString('4 Stk').quantity, 4);
assert.strictEqual(parseQuantityString('4 Stk').unit, 'pcs');
console.log('✓ Quantity parsing tests passed!');
// 2. Test category inference
console.log('2. Testing category inference...');
assert.strictEqual(inferCategory([], 'Frische Vollmilch 3.5%'), 'Dairy & Cheese');
assert.strictEqual(inferCategory([], 'Gouda Käse in Scheiben'), 'Dairy & Cheese');
assert.strictEqual(inferCategory([], 'Rinderhackfleisch'), 'Meat & Fish');
assert.strictEqual(inferCategory([], 'Bio Tomaten'), 'Produce');
assert.strictEqual(inferCategory([], 'Apfelsaft 100%'), 'Beverages');
assert.strictEqual(inferCategory([], 'Senf mittelscharf'), 'Sauces & Condiments');
console.log('✓ Category inference tests passed!');
// 3. Test Database CRUD & Quantity adjustments
console.log('3. Testing Database operations...');
const newItem = db.createItem({
name: 'Test Yogurt',
brand: 'TestBrand',
barcode: '999999999999',
category: 'Dairy & Cheese',
location: 'Fridge - Top Shelf',
quantity: 500,
initial_quantity: 500,
unit: 'g',
expiry_date: '2026-10-20',
notes: 'Test note'
});
assert(newItem.id, 'Item should have an ID');
assert.strictEqual(newItem.name, 'Test Yogurt');
assert.strictEqual(newItem.quantity, 500);
assert.strictEqual(newItem.unit, 'g');
// Adjust grams: e.g. consumed 150g -> remaining 350g
console.log('Testing partial consumption (-150g)...');
const adjusted = db.adjustQuantity(newItem.id, { delta: -150 });
assert.strictEqual(adjusted.quantity, 350);
assert.strictEqual(adjusted.is_opened, 1, 'Should automatically mark as opened when grams reduced');
// Slider or direct set: e.g. set remaining to 100g
console.log('Testing absolute set (100g remaining)...');
const updatedAbs = db.adjustQuantity(newItem.id, { newQuantity: 100 });
assert.strictEqual(updatedAbs.quantity, 100);
// Consume remaining
console.log('Testing consume all...');
const finished = db.adjustQuantity(newItem.id, { newQuantity: 0 });
assert.strictEqual(finished.quantity, 0);
// Delete test item
const deleted = db.deleteItem(newItem.id);
assert.strictEqual(deleted, true);
assert.strictEqual(db.getItemById(newItem.id), undefined);
// Test stats
const stats = db.getStats();
assert(typeof stats.total === 'number');
assert(typeof stats.fresh === 'number');
console.log('✓ All database operations passed!');
console.log('🎉 All backend tests completed successfully!');