feat(ceo): create dynamic sitemap

closes #544

src/app/sitemap.ts

@@ -0,0 +1,38 @@
+import { MetadataRoute } from 'next'
+import { getUniqueCategoryList } from '@/shared/lib/categories'
+import { getUniqueTagListFromPosts } from '@/shared/lib/tags'
+import { host } from '@/shared/lib/webserver-constants'
+import { allPosts } from 'contentlayer/generated'
+
+export default function sitemap(): MetadataRoute.Sitemap {
+  const commonRoutes = ['', 'categories', 'feed', 'tag', 'portifolio'].map(
+    route => ({
+      url: `${host}/${route}`,
+      lastModified: new Date().toISOString()
+    })
+  )
+
+  const tags = getUniqueTagListFromPosts().map(tag => ({
+    url: `${host}/tag/${tag}`,
+    lastModified: new Date().toISOString()
+  }))
+  const categories = getUniqueCategoryList().map(category => ({
+    url: `${host}/categories/${category}`,
+    lastModified: new Date().toISOString()
+  }))
+  const posts = allPosts.map(post => ({
+    url: `${host}/post/${post.id}`,
+    lastModified: new Date(post.date).toISOString()
+  }))
+
+  return [
+    ...commonRoutes,
+    ...tags,
+    ...categories,
+    ...posts,
+    {
+      url: `${host}/author/mateusfg7`,
+      lastModified: new Date().toISOString()
+    }
+  ]
+}