From ca93046aadd740be7ac73530e7e687ebf45bbfc9 Mon Sep 17 00:00:00 2001
From: Erik Tiekstra <erik.tiekstra@scandichotels.com>
Date: Mon, 17 Mar 2025 07:17:08 +0000
Subject: [PATCH] feat/SW-550 sitemap route

* feat(SW-550): Added rewrites to handle sitemap paths

* feat(SW-550): Added sitemap-index generation

* feat(SW-550): Added sitemap xml file generation

* feat(SW-550): Added feature flag 'HIDE_FOR_NEXT_RELEASE' to sitemap routes


Approved-by: Linus Flood
---
 .gitignore                                    |  5 +-
 apps/scandic-web/app/api/sitemap/utils.ts     |  8 +--
 .../app/sitemap/[sitemapId]/route.ts          | 50 +++++++++++++++++++
 apps/scandic-web/app/sitemap/route.ts         | 29 +++++++++++
 apps/scandic-web/next.config.js               |  8 +++
 apps/scandic-web/types/sitemap.ts             |  2 +-
 6 files changed, 96 insertions(+), 6 deletions(-)
 create mode 100644 apps/scandic-web/app/sitemap/[sitemapId]/route.ts
 create mode 100644 apps/scandic-web/app/sitemap/route.ts

diff --git a/.gitignore b/.gitignore
index 74f3e9c3c..0eae0acc0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,4 +10,7 @@ node_modules
 .yarn/releases
 
 # Turbo
-.turbo
\ No newline at end of file
+.turbo
+
+# Local Netlify folder
+.netlify
diff --git a/apps/scandic-web/app/api/sitemap/utils.ts b/apps/scandic-web/app/api/sitemap/utils.ts
index 05844ff70..853058a3b 100644
--- a/apps/scandic-web/app/api/sitemap/utils.ts
+++ b/apps/scandic-web/app/api/sitemap/utils.ts
@@ -1,6 +1,8 @@
 import { Lang } from "@/constants/languages"
 import { env } from "@/env/server"
 
+import { removeTrailingSlash } from "@/utils/url"
+
 import {
   mergeEntriesCounter,
   mergeEntriesSuccessCounter,
@@ -114,13 +116,11 @@ function mapEntriesToSitemapEntry(entries: SyncItem[]) {
   if (mainEntry) {
     const { locale, url } = mainEntry.data
     const sitemapEntry: SitemapEntry = {
-      url: `${env.PUBLIC_URL}/${locale}${url}`,
+      url: removeTrailingSlash(`${env.PUBLIC_URL}/${locale}${url}`),
       lastModified,
       changeFrequency,
       priority,
-    }
-    if (alternates) {
-      sitemapEntry.alternates = alternates
+      alternates,
     }
     return sitemapEntry
   }
diff --git a/apps/scandic-web/app/sitemap/[sitemapId]/route.ts b/apps/scandic-web/app/sitemap/[sitemapId]/route.ts
new file mode 100644
index 000000000..1af4f382f
--- /dev/null
+++ b/apps/scandic-web/app/sitemap/[sitemapId]/route.ts
@@ -0,0 +1,50 @@
+import { notFound } from "next/navigation"
+
+import { env } from "@/env/server"
+
+import { getSitemapDataById } from "@/utils/sitemap"
+
+import type { NextRequest } from "next/server"
+
+export const dynamic = "force-dynamic"
+
+export async function GET(
+  _request: NextRequest,
+  context: { params: { sitemapId: string } }
+) {
+  if (env.HIDE_FOR_NEXT_RELEASE) {
+    notFound()
+  }
+
+  const sitemapId = context.params.sitemapId
+  if (!sitemapId) {
+    notFound()
+  }
+
+  const sitemapData = await getSitemapDataById(Number(sitemapId))
+  if (!sitemapData.length) {
+    notFound()
+  }
+
+  const entries = sitemapData.map((entry) => {
+    const alternates = Object.entries(entry.alternates).map(
+      ([lang, url]) =>
+        `<xhtml:link rel="alternate" hreflang="${lang}" href="${url}" />`
+    )
+
+    return `
+<url>
+  <loc>${entry.url}</loc>
+  <lastmod>${entry.lastModified}</lastmod>
+  <changefreq>${entry.changeFrequency}</changefreq>
+  <priority>${entry.priority}</priority>
+  ${alternates.join("")}
+</url>`
+  })
+
+  const sitemapXML = `<?xml version="1.0" encoding="UTF-8"?>\n<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml">${entries.join("")}\n</urlset>`
+
+  return new Response(sitemapXML, {
+    headers: { "Content-Type": "text/xml" },
+  })
+}
diff --git a/apps/scandic-web/app/sitemap/route.ts b/apps/scandic-web/app/sitemap/route.ts
new file mode 100644
index 000000000..84e9d484d
--- /dev/null
+++ b/apps/scandic-web/app/sitemap/route.ts
@@ -0,0 +1,29 @@
+import { notFound } from "next/navigation"
+
+import { env } from "@/env/server"
+
+import { getLastUpdated, getSitemapIds } from "@/utils/sitemap"
+
+export const dynamic = "force-dynamic"
+
+export async function GET() {
+  if (env.HIDE_FOR_NEXT_RELEASE) {
+    notFound()
+  }
+
+  const lastUpdated = await getLastUpdated()
+  const sitemaps = await getSitemapIds()
+
+  const urls = sitemaps.map(
+    (id) => `<sitemap>
+  <loc>${env.PUBLIC_URL}/sitemap-${id}.xml</loc>
+  <lastmod>${lastUpdated}</lastmod>
+</sitemap>`
+  )
+
+  const sitemapIndexXML = `<?xml version="1.0" encoding="UTF-8"?>\n<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">${urls.join("")}\n</sitemapindex>`
+
+  return new Response(sitemapIndexXML, {
+    headers: { "Content-Type": "text/xml" },
+  })
+}
diff --git a/apps/scandic-web/next.config.js b/apps/scandic-web/next.config.js
index cb0ef944a..91d6de58d 100644
--- a/apps/scandic-web/next.config.js
+++ b/apps/scandic-web/next.config.js
@@ -308,6 +308,14 @@ const nextConfig = {
           source: findMyBooking.sv,
           destination: "/sv/hotelreservation/get-booking",
         },
+        {
+          source: `/sitemap-:id(\\d{1,}).xml`,
+          destination: `/sitemap/:id`,
+        },
+        {
+          source: `/sitemap-index.xml`,
+          destination: `/sitemap`,
+        },
       ],
     }
   },
diff --git a/apps/scandic-web/types/sitemap.ts b/apps/scandic-web/types/sitemap.ts
index 94068135f..e3053456f 100644
--- a/apps/scandic-web/types/sitemap.ts
+++ b/apps/scandic-web/types/sitemap.ts
@@ -16,7 +16,7 @@ export interface SitemapEntry {
   lastModified: string
   changeFrequency: ChangeFrequency
   priority: number
-  alternates?: Partial<Record<Lang, string>>
+  alternates: Partial<Record<Lang, string>>
 }
 
 export type SitemapData = SitemapEntry[]