diff options
Diffstat (limited to 'packages/web-util/src/hooks/useLocalStorage.ts')
-rw-r--r-- | packages/web-util/src/hooks/useLocalStorage.ts | 51 |
1 files changed, 31 insertions, 20 deletions
diff --git a/packages/web-util/src/hooks/useLocalStorage.ts b/packages/web-util/src/hooks/useLocalStorage.ts index b460144a6..7c41f98be 100644 --- a/packages/web-util/src/hooks/useLocalStorage.ts +++ b/packages/web-util/src/hooks/useLocalStorage.ts @@ -19,7 +19,7 @@ * @author Sebastian Javier Marchano (sebasjm) */ -import { Codec, codecForString } from "@gnu-taler/taler-util"; +import { AbsoluteTime, Codec, codecForString } from "@gnu-taler/taler-util"; import { useEffect, useState } from "preact/hooks"; import { ObservableMap, @@ -61,12 +61,25 @@ const supportLocalStorage = typeof window !== "undefined"; const supportBrowserStorage = typeof chrome !== "undefined" && typeof chrome.storage !== "undefined"; + /** + * Build setting storage + */ const storage: ObservableMap<string, string> = (function buildStorage() { if (supportBrowserStorage) { - return browserStorageMap(memoryMap<string>()); + //browser storage is like local storage but + //with app sync. + //Works for almost every browser + if (supportLocalStorage) { + return browserStorageMap(localStorageMap()); + } else { + // service worker doesn't have local storage + return browserStorageMap(memoryMap<string>()); + } } else if (supportLocalStorage) { + // fallback if browser is too old return localStorageMap(); } else { + // new need to save settings somewhere return memoryMap<string>(); } })(); @@ -85,26 +98,14 @@ export function useLocalStorage<Type = string>( key: StorageKey<Type>, defaultValue?: Type, ): StorageState<Type> { - function convert(updated: string | undefined): Type | undefined { - if (updated === undefined) return defaultValue; //optional - try { - return key.codec.decode(JSON.parse(updated)); - } catch (e) { - //decode error - return defaultValue; - } - } - const [storedValue, setStoredValue] = useState<Type | undefined>( - (): Type | undefined => { - const prev = storage.get(key.id); - return convert(prev); - }, - ); + const current = convert(storage.get(key.id), key, defaultValue); + + const [_, setStoredValue] = useState(AbsoluteTime.now().t_ms); useEffect(() => { return storage.onUpdate(key.id, () => { - const newValue = storage.get(key.id); - setStoredValue(convert(newValue)); + // const newValue = storage.get(key.id); + setStoredValue(AbsoluteTime.now().t_ms); }); }, [key.id]); @@ -120,10 +121,20 @@ export function useLocalStorage<Type = string>( }; return { - value: storedValue, + value: current, update: setValue, reset: () => { setValue(defaultValue); }, }; } + +function convert<Type>(updated: string | undefined, key: StorageKey<Type>, defaultValue?: Type): Type | undefined { + if (updated === undefined) return defaultValue; //optional + try { + return key.codec.decode(JSON.parse(updated)); + } catch (e) { + //decode error + return defaultValue; + } +} |