feat: add admin inventory Excel export

apps/api/src/modules/exports/routes/admin-export-routes.js

@@ -37,4 +37,15 @@ export async function registerAdminExportRoutes(app, options) {
       .header('content-disposition', 'attachment; filename="inventory.csv"')
       .send(data);
   });
+
+  app.get('/exports/inventory.xls', async (request, reply) => {
+    const data = await adminExportService.inventoryExcel({
+      sellerId: request.admin.sellerId,
+    });
+
+    return reply
+      .type('application/vnd.ms-excel; charset=utf-8')
+      .header('content-disposition', 'attachment; filename="inventory.xls"')
+      .send(data);
+  });
 }

apps/api/src/modules/exports/services/admin-export-service.js

@@ -19,9 +19,34 @@ export function createAdminExportService({ inventoryItemService }) {
         ...rows.map((row) => columns.map((column) => escapeCsvValue(row[column])).join(',')),
       ].join('\r\n');
     },
+
+    async inventoryExcel({ sellerId }) {
+      const rows = await inventoryRows(sellerId);
+      const columns = ['id', 'productId', 'conditionId', 'status', 'notes', 'createdAt', 'updatedAt'];
+      const header = columns.map((column) => excelCell(column, true)).join('');
+      const body = rows.map((row) => (
+        `<Row>${columns.map((column) => excelCell(row[column])).join('')}</Row>`
+      )).join('');
+
+      return `<?xml version="1.0"?>\n<?mso-application progid="Excel.Sheet"?>\n<Workbook xmlns="urn:schemas-microsoft-com:office:spreadsheet" xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet"><Styles><Style ss:ID="Header"><Font ss:Bold="1" /></Style></Styles><Worksheet ss:Name="Inventory"><Table><Row>${header}</Row>${body}</Table></Worksheet></Workbook>`;
+    },
   };
 }
 
+function excelCell(value, header = false) {
+  const style = header ? ' ss:StyleID="Header"' : '';
+  return `<Cell${style}><Data ss:Type="String">${escapeXml(value)}</Data></Cell>`;
+}
+
+function escapeXml(value) {
+  return String(value ?? '')
+    .replaceAll('&', '&amp;')
+    .replaceAll('<', '&lt;')
+    .replaceAll('>', '&gt;')
+    .replaceAll('"', '&quot;')
+    .replaceAll("'", '&apos;');
+}
+
 function escapeCsvValue(value) {
   const text = value == null ? '' : String(value);
   return `"${text.replaceAll('"', '""')}"`;