Pantry units and recipes: amounts in pounds, cups and so on, Use some, and Cooked it with a preview of what comes out

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

tools/pantry-test.js

@@ -52,6 +52,16 @@ const off = http.createServer((req, res) => { const code = /product\/(\d+)\.json
       for (const [p, o] of [['/item', { name: 'Candy', qty: 9 }], ['/adjust', { id: gb, delta: 5 }], ['/delete', { id: gb }], ['/unlink', { id: gb, code: '1' }], ['/scan', { code: '0099999999999', mode: 'add', name: 'Candy' }]]) assert.equal((await post(p, o, 'kid')).status, 403, p + ' is for grown-ups');
       assert.equal((await get('/')).status, 200); assert.equal((await j(await fetch(base + '/', { headers: { 'x-user': 'kid' } }))).kid, true);
       r = await j(await post('/scan', { code: '0016000275287', itemId: corn })); const before = r.item.qty; r = await j(await post('/scan', { code: '0016000275287', mode: 'use' }, 'kid')); assert.equal(r.item.qty, before - 1, 'a child can scan a known barcode to take one'); assert.equal((await post('/scan', { code: '0555555555555', mode: 'use', name: 'Mystery' }, 'kid')).status, 403, 'but not make new items');
+      // units: an item in pounds, amounts in cups, taken out together (grown-ups only), and the shown amount
+      r = await j(await post('/item', { name: 'Flour', qty: 10, unit: 'lb', low: 2 })); let fl = r.items.find(x => x.name === 'Flour'); assert.deepEqual([fl.unit, fl.label, fl.lowLabel], ['lb', '10 lb', '2 lb']); assert.equal((await j(await post('/item', { name: 'Bad', qty: 1, unit: 'furlongs' }))).items.find(x => x.name === 'Bad').unit, '', 'an unknown unit is a count');
+      r = await j(await post('/take', { takes: [{ id: fl.id, amount: 4, unit: 'cup' }], note: 'cooked Pancakes' })); assert.equal(r.done.length, 1); assert.ok(Math.abs(r.done[0].took - 4 * 120 / 453.592) < 0.01); assert.equal(r.items.find(x => x.name === 'Flour').label, '8 lb 15 oz', '10 lb less 4 cups'); assert.equal(r.recent[0].note, 'cooked Pancakes');
+      r = await j(await post('/take', { takes: [{ id: fl.id, amount: 8, unit: 'oz' }, { id: fl.id, amount: 3, unit: 'furlongs' }, { id: 'nope', amount: 1 }, { id: note, amount: 1 }] })); assert.equal(r.done.length, 1); assert.equal(r.skipped.length, 3, 'what cannot be turned into the item\'s unit, is missing or is not counted is skipped, with a reason'); assert.match(r.skipped.find(x => x.name === 'Napkins').why, /not counted/);
+      r = await j(await post('/take', { takes: [{ id: fl.id, amount: 99, unit: 'lb' }] })); assert.equal(r.items.find(x => x.name === 'Flour').qty, 0, 'never below none'); assert.equal((await post('/take', { takes: [{ id: fl.id, amount: 1 }] }, 'kid')).status, 403, 'children only take one');
+      assert.equal((await post('/use', { id: fl.id }, 'kid')).status, 409, 'tapping take-one on a pound of flour is not allowed: use an amount');
+      // scanning goes by the size of the package for an item in a unit
+      r = await j(await post('/item', { name: 'Tomatoes', qty: 0, unit: 'oz' })); const tom = r.items.find(x => x.name === 'Tomatoes').id; const tcache = path.join(process.env.DATA_DIR, 'barcode-cache.json'); const cc = JSON.parse(fs.readFileSync(tcache, 'utf8')); cc['0041331000123'] = { found: true, t: Date.now(), name: 'Diced Tomatoes', brand: 'Muir', quantity: '14.5 oz' }; cc['0041331000456'] = { found: true, t: Date.now(), name: 'Tomato Paste', brand: 'Muir', quantity: '1 lb' }; fs.writeFileSync(tcache, JSON.stringify(cc));
+      r = await j(await post('/scan', { code: '0041331000123', itemId: tom })); assert.equal(r.step, 14.5); assert.equal(r.item.qty, 14.5, 'a 14.5 oz can adds 14.5 oz'); r = await j(await post('/scan', { code: '0041331000456', itemId: tom })); assert.equal(r.step, 16, 'a 1 lb tin is 16 oz'); assert.equal(r.item.qty, 30.5); r = await j(await post('/scan', { code: '0041331000123', mode: 'use' })); assert.equal(r.item.qty, 16, 'using one takes the package size back off');
+      r = await j(await post('/scan', { code: '0070470003344', itemId: gb, mode: 'add' })); assert.equal(r.step, 1, 'a counted item goes up by one');
       // the pantry is shared, and old pantry files (a list of names) still load
       assert.equal((await j(await get('/', 'bo'))).items.length >= 1, true); fs.writeFileSync(path.join(process.env.DATA_DIR, 'pantry.json'), JSON.stringify(['Flour', 'Salt'])); r = await j(await get('/')); assert.deepEqual(r.items.map(x => x.name), ['Flour', 'Salt']); assert.equal(r.items[0].qty, null);
       assert.deepEqual(pantry.inPantry('3 cups all-purpose flour', ['Flour', 'Salt']), ['Flour']);