subrules sync time

src/hooks/Sync.js

@@ -1,3 +1,4 @@
+import { useCallback } from "react";
 import { STOKEY_SYNC, DEFAULT_SYNC } from "../config";
 import { useStorage } from "./Storage";
 
@@ -9,3 +10,36 @@ export function useSync() {
   const { data, update } = useStorage(STOKEY_SYNC, DEFAULT_SYNC);
   return { sync: data, updateSync: update };
 }
+
+/**
+ * caches sync hook
+ * @param {*} url
+ * @returns
+ */
+export function useSyncCaches() {
+  const { sync, updateSync } = useSync();
+
+  const updateDataCache = useCallback(
+    async (url) => {
+      const dataCaches = sync.dataCaches || {};
+      dataCaches[url] = Date.now();
+      await updateSync({ dataCaches });
+    },
+    [sync, updateSync]
+  );
+
+  const deleteDataCache = useCallback(
+    async (url) => {
+      const dataCaches = sync.dataCaches || {};
+      delete dataCaches[url];
+      await updateSync({ dataCaches });
+    },
+    [sync, updateSync]
+  );
+
+  return {
+    dataCaches: sync.dataCaches || {},
+    updateDataCache,
+    deleteDataCache,
+  };
+}