feat: Add sitemap generation feature

app/fastify-entry.ts

@@ -3,6 +3,7 @@ import type { Theme } from "@/contexts/ThemeContext";
 import { createHandler } from "@universal-middleware/fastify";
 import { telefuncHandler } from "./server/telefunc-handler";
 import { vikeHandler } from "./server/vike-handler";
+import { sitemap } from "./services/Sitemap";
 import fastifyCookie from "@fastify/cookie";
 import { fileURLToPath } from "node:url";
 import { dirname } from "node:path";
@@ -34,6 +35,8 @@ declare global {
 async function startServer() {
   const app = Fastify();
 
+  sitemap.generateSitemap();
+
   app.register(fastifyCookie, {
     secret: "todo",
     hook: "onRequest",

app/public/sitemap.xml

@@ -0,0 +1 @@
+<?xml version="1.0" encoding="UTF-8"?><urlset xmlns="http://www.sitemaps.org/schemas/sitemap-image/1.1"></urlset>

app/services/Sitemap.ts

@@ -0,0 +1,77 @@
+import { navigation } from "@/lib/navigation";
+import path from "path";
+import fs from "fs";
+
+const __dirname = path.resolve();
+
+const getBaseUrl = () => {
+  if (process.env.NODE_ENV === "production") {
+    return "https://memento-dev.fr";
+  }
+
+  return `http://localhost:${process.env.PORT || 3000}`;
+};
+
+type SitemapElement = {
+  location: string;
+  lastmod: string;
+  priority: string;
+};
+
+class Sitemap {
+  private readonly sitemapPath = path.join(__dirname, "public", "sitemap.xml");
+  private readonly lastModified = new Date().toISOString();
+  private readonly baseUrl = getBaseUrl();
+
+  private urls: SitemapElement[] = [];
+  private sitemap: string = "";
+
+  private static instance: Sitemap;
+
+  private constructor() {}
+
+  public static getInstance(): Sitemap {
+    if (!Sitemap.instance) {
+      Sitemap.instance = new Sitemap();
+    }
+    return Sitemap.instance;
+  }
+
+  private resetMemory(): void {
+    this.sitemap = "";
+    this.urls = [];
+  }
+
+  private prependSitemap(): void {
+    this.sitemap = `<?xml version="1.0" encoding="UTF-8"?>`;
+    this.sitemap += `<urlset xmlns="http://www.sitemaps.org/schemas/sitemap-image/1.1">`;
+  }
+
+  private appendSitemap(): void {
+    this.sitemap += `</urlset>`;
+  }
+
+  private buildSitemap(): void {
+    this.prependSitemap();
+    this.appendSitemap();
+  }
+
+  private saveSitemap(): void {
+    fs.writeFileSync(this.sitemapPath, this.sitemap, "utf8");
+  }
+
+  private loadUrls(): void {}
+
+  public generateSitemap(): void {
+    console.log("Generating sitemap...");
+
+    this.resetMemory();
+    this.loadUrls();
+    this.buildSitemap();
+    this.saveSitemap();
+
+    console.log("Sitemap generated successfully.");
+  }
+}
+
+export const sitemap = Sitemap.getInstance();