30 lines
1.0 KiB
TypeScript
30 lines
1.0 KiB
TypeScript
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import { STORAGE_KEYS } from "../app_constants";
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// in-memory state (this tab's current state) versions. Currently just
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// timestamps of the last time the state was saved to browser storage.
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const LOCAL_STATE_VERSIONS = {
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[STORAGE_KEYS.VERSION_DATA_STATE]: -1,
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[STORAGE_KEYS.VERSION_FILES]: -1,
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};
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type BrowserStateTypes = keyof typeof LOCAL_STATE_VERSIONS;
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export const isBrowserStorageStateNewer = (type: BrowserStateTypes) => {
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const storageTimestamp = JSON.parse(localStorage.getItem(type) || "-1");
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return storageTimestamp > LOCAL_STATE_VERSIONS[type];
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};
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export const updateBrowserStateVersion = (type: BrowserStateTypes) => {
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const timestamp = Date.now();
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localStorage.setItem(type, JSON.stringify(timestamp));
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LOCAL_STATE_VERSIONS[type] = timestamp;
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};
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export const resetBrowserStateVersions = () => {
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for (const key of Object.keys(LOCAL_STATE_VERSIONS) as BrowserStateTypes[]) {
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const timestamp = -1;
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localStorage.setItem(key, JSON.stringify(timestamp));
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LOCAL_STATE_VERSIONS[key] = timestamp;
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}
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};
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