feat(seo): expand sitemap and structured data

2026-08-31 10:27:33 +03:00
parent e2c33d6b29
commit caf9fceb7a
7 changed files with 304 additions and 98 deletions
@@ -1,10 +1,54 @@
-import { listBlogDetails } from "@/data/blog-detail";
-import { isNewsletterCategory } from "@/data/blog";
-import { listAnimationSources } from "@/data/animation-sources";
 import type { MetadataRoute } from "next";
+import { listAnimationSources } from "@/data/animation-sources";
+import { isNewsletterCategory } from "@/data/blog";
+import { listBlogDetails } from "@/data/blog-detail";
+import {
+  getAbsoluteUrl,
+  getLocalizedUrl,
+  type SiteLocale,
+} from "@/lib/seo";

-const SITE_URL =
-  process.env.NEXT_PUBLIC_SITE_URL || "https://poyrazavsever.com";
+const LOCALES: SiteLocale[] = ["tr", "en"];
+
+const STATIC_ROUTES = [
+  { path: "/", changeFrequency: "weekly", priority: 1 },
+  { path: "/about", changeFrequency: "monthly", priority: 0.8 },
+  { path: "/about/references", changeFrequency: "monthly", priority: 0.5 },
+  {
+    path: "/about/volunteer-community",
+    changeFrequency: "monthly",
+    priority: 0.5,
+  },
+  { path: "/blog", changeFrequency: "weekly", priority: 0.9 },
+  { path: "/agenda", changeFrequency: "weekly", priority: 0.9 },
+  { path: "/projects", changeFrequency: "monthly", priority: 0.8 },
+  { path: "/content", changeFrequency: "weekly", priority: 0.7 },
+  { path: "/gallery", changeFrequency: "monthly", priority: 0.6 },
+  { path: "/contact", changeFrequency: "yearly", priority: 0.5 },
+  { path: "/links", changeFrequency: "monthly", priority: 0.4 },
+  {
+    path: "/animation-sources",
+    changeFrequency: "monthly",
+    priority: 0.7,
+  },
+] as const;
+
+function toValidDate(value: string) {
+  const date = new Date(value);
+  return Number.isNaN(date.getTime()) ? undefined : date;
+}
+
+function getLanguageLinks(paths: Partial<Record<SiteLocale, string>>) {
+  const languages: Record<string, string> = {};
+
+  if (paths.tr) languages["tr-TR"] = getLocalizedUrl("tr", paths.tr);
+  if (paths.en) languages["en-US"] = getLocalizedUrl("en", paths.en);
+  languages["x-default"] = paths.tr
+    ? getLocalizedUrl("tr", paths.tr)
+    : getLocalizedUrl("en", paths.en!);
+
+  return languages;
+}

 export default async function sitemap(): Promise<MetadataRoute.Sitemap> {
  const [posts, animationSources] = await Promise.all([
@@ -12,89 +56,75 @@ export default async function sitemap(): Promise<MetadataRoute.Sitemap> {
    listAnimationSources(),
  ]);

-  const staticRoutes: MetadataRoute.Sitemap = [
-    {
-      url: SITE_URL,
-      lastModified: new Date(),
-      changeFrequency: "weekly",
-      priority: 1.0,
-    },
-    {
-      url: `${SITE_URL}/about`,
-      lastModified: new Date(),
-      changeFrequency: "monthly",
-      priority: 0.8,
-    },
-    {
-      url: `${SITE_URL}/about/references`,
-      lastModified: new Date(),
-      changeFrequency: "monthly",
-      priority: 0.5,
-    },
-    {
-      url: `${SITE_URL}/about/volunteer-community`,
-      lastModified: new Date(),
-      changeFrequency: "monthly",
-      priority: 0.5,
-    },
-    {
-      url: `${SITE_URL}/blog`,
-      lastModified: new Date(),
-      changeFrequency: "weekly",
-      priority: 0.9,
-    },
-    {
-      url: `${SITE_URL}/agenda`,
-      lastModified: new Date(),
-      changeFrequency: "weekly",
-      priority: 0.9,
-    },
-    {
-      url: `${SITE_URL}/projects`,
-      lastModified: new Date(),
-      changeFrequency: "monthly",
-      priority: 0.8,
-    },
-    {
-      url: `${SITE_URL}/content`,
-      lastModified: new Date(),
-      changeFrequency: "weekly",
-      priority: 0.7,
-    },
-    {
-      url: `${SITE_URL}/contact`,
-      lastModified: new Date(),
-      changeFrequency: "yearly",
-      priority: 0.5,
-    },
-    {
-      url: `${SITE_URL}/links`,
-      lastModified: new Date(),
-      changeFrequency: "monthly",
-      priority: 0.4,
-    },
-    {
-      url: `${SITE_URL}/animation-sources`,
-      lastModified: new Date(),
-      changeFrequency: "monthly",
-      priority: 0.7,
-    },
-  ];
+  const staticRoutes: MetadataRoute.Sitemap = STATIC_ROUTES.flatMap((route) => {
+    const paths = { tr: route.path, en: route.path };
+    const languages = getLanguageLinks(paths);

-  const blogRoutes: MetadataRoute.Sitemap = posts.map((post) => ({
-    url: `${SITE_URL}/${isNewsletterCategory(post.category) ? "agenda" : "blog"}/${post.slug}`,
-    lastModified: post.date ? new Date(post.date) : new Date(),
-    changeFrequency: "monthly",
-    priority: 0.7,
-  }));
+    return LOCALES.map((locale) => ({
+      url: getLocalizedUrl(locale, route.path),
+      changeFrequency: route.changeFrequency,
+      priority: route.priority,
+      alternates: { languages },
+    }));
+  });
+
+  const postGroups = new Map<string, typeof posts>();
+  for (const post of posts) {
+    const key = `${post.category.toLocaleLowerCase()}:${post.coverImage}`;
+    postGroups.set(key, [...(postGroups.get(key) ?? []), post]);
+  }
+
+  const blogRoutes: MetadataRoute.Sitemap = posts.map((post) => {
+    const section = isNewsletterCategory(post.category) ? "agenda" : "blog";
+    const key = `${post.category.toLocaleLowerCase()}:${post.coverImage}`;
+    const translations = postGroups.get(key) ?? [post];
+    const paths = Object.fromEntries(
+      translations.map((translation) => [
+        translation.lang,
+        `/${section}/${translation.slug}`,
+      ]),
+    );
+
+    return {
+      url: getLocalizedUrl(post.lang, `/${section}/${post.slug}`),
+      lastModified: toValidDate(post.date),
+      changeFrequency: "monthly",
+      priority: 0.7,
+      alternates: { languages: getLanguageLinks(paths) },
+      images: [getAbsoluteUrl(post.coverImage)],
+    };
+  });
+
+  const animationGroups = new Map<string, typeof animationSources>();
+  for (const source of animationSources) {
+    animationGroups.set(source.slug, [
+      ...(animationGroups.get(source.slug) ?? []),
+      source,
+    ]);
+  }

  const animationSourceRoutes: MetadataRoute.Sitemap = animationSources.map(
-    (source) => ({
-      url: `${SITE_URL}${source.lang === "en" ? "/en" : ""}/animation-sources/${source.slug}`,
-      lastModified: source.date ? new Date(source.date) : new Date(),
-      changeFrequency: "monthly",
-      priority: 0.6,
-    }),
+    (source) => {
+      const translations = animationGroups.get(source.slug) ?? [source];
+      const paths = Object.fromEntries(
+        translations.map((translation) => [
+          translation.lang,
+          `/animation-sources/${translation.slug}`,
+        ]),
+      );
+
+      return {
+        url: getLocalizedUrl(
+          source.lang,
+          `/animation-sources/${source.slug}`,
+        ),
+        lastModified: toValidDate(source.date),
+        changeFrequency: "monthly",
+        priority: 0.6,
+        alternates: { languages: getLanguageLinks(paths) },
+        images: [getAbsoluteUrl(source.coverImage)],
+      };
+    },
  );

  return [...staticRoutes, ...blogRoutes, ...animationSourceRoutes];