Cache requests by the hour

1 files changed, 20 insertions, 1 deletions

diff --git a/index.ts b/index.ts
index 5bf62c7..830692b 100644
--- a/index.ts
+++ b/index.ts
@@ -27,6 +27,15 @@ window.onload = function() {
     }
 }
 
+const cache = {
+    added: 0,
+    value: {} as QueryResponse,
+    set(data: QueryResponse) {
+        cache.value = data;
+        cache.added = +new Date();
+    }
+}
+
 async function getRepositories(): Promise<Repository[] | undefined> {
     const response = await fetch(API_URL, {
         method: "POST",
@@ -52,7 +61,17 @@ async function getRepositories(): Promise<Repository[] | undefined> {
     })
 
     if (response.ok) {
-        const json = await response.json() as QueryResponse;
+        let json
+
+        if (cache.added < (+new Date() - 3.6E6)) { // cached for 1 hour
+            json = await response.json() as QueryResponse;
+            cache.set(json);
+            console.log("from api");
+        } else {
+            json = cache.value;
+            console.log("from cache");
+        }
+
         return json?.data.repositories.results?.filter(repo => repo.visibility === "PUBLIC") ?? [];
     } else {
         throw response;