Adds sitemap. (#982)

app/sitemap.ts

@@ -0,0 +1,33 @@
+import { getCollections, getPages, getProducts } from 'lib/shopify';
+import { MetadataRoute } from 'next';
+
+const baseUrl = process.env.NEXT_PUBLIC_VERCEL_URL
+  ? `https://${process.env.NEXT_PUBLIC_VERCEL_URL}`
+  : 'http://localhost:3000';
+
+export default async function sitemap(): Promise<Promise<Promise<MetadataRoute.Sitemap>>> {
+  const routesMap = ['', '/search'].map((route) => ({
+    url: `${baseUrl}${route}`,
+    lastModified: new Date().toISOString()
+  }));
+
+  const collections = await getCollections();
+  const collectionsMap = collections.map((collection) => ({
+    url: `${baseUrl}${collection.path}`,
+    lastModified: collection.updatedAt
+  }));
+
+  const products = await getProducts({});
+  const productsMap = products.map((product) => ({
+    url: `${baseUrl}/product/${product.handle}`,
+    lastModified: product.updatedAt
+  }));
+
+  const pages = await getPages();
+  const pagesMap = pages.map((page) => ({
+    url: `${baseUrl}/${page.handle}`,
+    lastModified: page.updatedAt
+  }));
+
+  return [...routesMap, ...collectionsMap, ...productsMap, ...pagesMap];
+}