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notesnook/apps/mobile/app/hooks/use-stored-ref.ts
ammarahm-ed a076ee640d mobile: save report issue information if app gets
restarted or accidentally closed
2023-09-04 15:45:30 +05:00

53 lines
1.4 KiB
TypeScript

/*
This file is part of the Notesnook project (https://notesnook.com/)
Copyright (C) 2023 Streetwriters (Private) Limited
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import { useRef } from "react";
import { MMKV } from "../common/database/mmkv";
export function useStoredRef<T>(
key: string,
initialValue: T
): {
current: T;
reset(): void;
} {
const refKey = `storedRef:${key}`;
const value = useRef(
MMKV.getMap<{ current: T }>(refKey)?.current || initialValue
);
const frameRef = useRef(0);
return {
get current() {
return value.current;
},
set current(next: T) {
value.current = next;
cancelAnimationFrame(frameRef.current);
frameRef.current = requestAnimationFrame(() => {
MMKV.setMap(refKey, {
current: value.current
});
});
},
reset() {
MMKV.removeItem(refKey);
}
};
}