Optimize product detail analytics loading

backend/test/analyticsService.test.js

@@ -12,6 +12,7 @@ const {
     getClientDetailsAnalytics,
     getPreviousDate,
     getProductAnalytics,
+    getProductDetailsAnalytics,
     getRecencyScore,
     getRfmAnalytics,
     getRfmSegment,
@@ -392,6 +393,97 @@ test('getProductAnalytics returns exact product rows with stock and latest price
     }
 });
 
+test('getProductDetailsAnalytics returns product identity and period chart without raw order download', async () => {
+    const originalQuery = pool.query;
+    const calls = [];
+
+    pool.query = async (sql, params = []) => {
+        calls.push({ sql, params });
+
+        if (sql.includes('selected_product AS')) {
+            return {
+                rows: [{
+                    id: '919483307',
+                    name: 'BASE LISA CAMISETA COR PRETO TAMANHO - G',
+                    price: 11.9
+                }]
+            };
+        }
+
+        return {
+            rows: [
+                {
+                    data_pedido_date: '2026-06-01',
+                    date_label: '01-06-2026',
+                    quantity_sold: 3,
+                    revenue: 35.7
+                },
+                {
+                    data_pedido_date: '2026-06-02',
+                    date_label: '02-06-2026',
+                    quantity_sold: 2,
+                    revenue: 23.8
+                }
+            ]
+        };
+    };
+
+    try {
+        const details = await getProductDetailsAnalytics('919483307', { start: '2026-06-01', end: '2026-06-22' });
+
+        assert.equal(calls.length, 2);
+        assert.match(calls[0].sql, /WITH selected_product AS/);
+        assert.match(calls[0].sql, /WHERE produto_id = \$1/);
+        assert.deepEqual(calls[0].params, ['919483307']);
+        assert.match(calls[1].sql, /produto_id = \$1/);
+        assert.match(calls[1].sql, /data_pedido_date >= \$2::date/);
+        assert.match(calls[1].sql, /data_pedido_date <= \$3::date/);
+        assert.deepEqual(calls[1].params, ['919483307', '2026-06-01', '2026-06-22']);
+        assert.deepEqual(details.productInfo, {
+            id: '919483307',
+            name: 'BASE LISA CAMISETA COR PRETO TAMANHO - G',
+            price: 11.9
+        });
+        assert.deepEqual(details.chartData, [
+            { date: '01-06-2026', value: 3 },
+            { date: '02-06-2026', value: 2 }
+        ]);
+        assert.equal(details.totalSold, 5);
+        assert.equal(details.totalRevenue, 59.5);
+    } finally {
+        pool.query = originalQuery;
+    }
+});
+
+test('getProductDetailsAnalytics keeps known products visible with zero period sales', async () => {
+    const originalQuery = pool.query;
+
+    pool.query = async (sql) => {
+        if (sql.includes('selected_product AS')) {
+            return {
+                rows: [{
+                    id: 'stock-only',
+                    name: 'Produto sem venda no período',
+                    price: 0
+                }]
+            };
+        }
+
+        return { rows: [] };
+    };
+
+    try {
+        const details = await getProductDetailsAnalytics('stock-only', { start: '2026-06-01', end: '2026-06-22' });
+
+        assert.equal(details.productInfo.id, 'stock-only');
+        assert.equal(details.totalSold, 0);
+        assert.equal(details.totalRevenue, 0);
+        assert.deepEqual(details.chartData, []);
+    } finally {
+        pool.query = originalQuery;
+    }
+});
+
 test('getClientAnalytics returns opaque client tokens', async () => {
     const originalQuery = pool.query;
     const calls = [];