feat: add robots txt

src/routes/+layout.server.ts

@@ -22,6 +22,12 @@ export async function load({ request, cookies, url, setHeaders, fetch }) {
         })
     }).catch((why) => {
         console.log("failed sending dark visitors analytics:", why)
+        return null
+    }).then(async (resp) => {
+        if (resp !== null) {
+            const msg = await resp.json()
+            console.log(`sent visitor analytic to dark visitors: ${resp.statusText}; ${msg.message}`)
+        }
     })
 
     let currentVisitCount = get(visitCount)

src/routes/robots.txt/+server.ts

@@ -0,0 +1,39 @@
+import { env } from '$env/dynamic/private';
+import { get, writable } from 'svelte/store';
+
+const cachedRobots = writable<string>("")
+const lastFetched = writable<number>(Date.now())
+
+const fetchRobotsTxt = async () => {
+    const robotsTxtResp = await fetch(
+        "https://api.darkvisitors.com/robots-txts",
+        {
+            method: "POST",
+            headers: {
+                "Authorization": `Bearer ${env.DARK_VISITORS_TOKEN}`,
+                "Content-Type": "application/json"
+            },
+            body: JSON.stringify({
+                agent_types: [
+                    "AI Assistant",
+                    "AI Data Scraper",
+                    "AI Search Crawler",
+                    "Undocumented AI Agent",
+                ],
+                disallow: "/"
+            })
+        }
+    )
+    const robotsTxt = await robotsTxtResp.text()
+    lastFetched.set(Date.now())
+    return robotsTxt
+}
+
+export const GET = async ({ }) => {
+    let robotsTxt = get(cachedRobots)
+    if (robotsTxt.length === 0 || Date.now() - get(lastFetched) > 1000 * 60 * 60 * 24) {
+        robotsTxt = await fetchRobotsTxt()
+        cachedRobots.set(robotsTxt)
+    }
+    return new Response(robotsTxt)
+}