feat: save the visitcount to working dir

.gitignore

@@ -5,6 +5,7 @@ node_modules
 .vercel
 /.svelte-kit
 /build
+/visitcount
 
 # OS
 .DS_Store

src/routes/+layout.server.ts

@@ -1,4 +1,5 @@
 import { scopeCookies } from '$lib';
+import { existsSync, readFileSync, writeFileSync } from 'fs';
 import { get, writable } from 'svelte/store';
 
 export const csr = true;
@@ -6,20 +7,29 @@ export const ssr = true;
 export const prerender = true;
 export const trailingSlash = 'always';
 
-const visitCount = writable(0);
+const visitCountFile = 'visitcount'
+const visitCount = writable(parseInt(existsSync(visitCountFile) ? readFileSync(visitCountFile).toString() : '0'));
 
 export async function load({ cookies, url, setHeaders }) {
     setHeaders({ 'Cache-Control': 'no-cache' })
     const scopedCookies = scopeCookies(cookies, '/')
+    // parse the last visit timestamp from cookies if it exists
     const visitedTimestamp = parseInt(scopedCookies.get('visitedTimestamp') || "0")
+    // get unix timestamp
     const currentTime = new Date().getTime()
     const timeSinceVisit = currentTime - visitedTimestamp
-    if (visitedTimestamp === 0 || timeSinceVisit > 1000 * 60 * 60) {
-        visitCount.set(get(visitCount) + 1)
+    let currentVisitCount = get(visitCount)
+    // check if this is the first time a client is visiting or if an hour has passed since they last visited
+    if (visitedTimestamp === 0 || timeSinceVisit > 1000 * 60 * 60 * 24) {
+        // increment current and write to the store
+        currentVisitCount += 1; visitCount.set(currentVisitCount)
+        // update the cookie with the current timestamp
         scopedCookies.set('visitedTimestamp', currentTime.toString())
+        // write the visit count to a file so we can load it later again
+        writeFileSync(visitCountFile, currentVisitCount.toString())
     }
     return {
         route: url.pathname,
-        visitCount: get(visitCount),
+        visitCount: currentVisitCount,
     }
 }