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79 lines
1.9 KiB
79 lines
1.9 KiB
import { Injectable } from "@angular/core";
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export interface IFunc<T> {
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(prev?: T): T;
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}
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interface Option<T = any> {
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stroage?: "local" | "session";
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defaultValue?: T | IFunc<T>;
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serializer?: (v: T) => string;
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deserializer?: (v: string) => T;
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}
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export const isFunction = (value: unknown): value is Function => typeof value === "function";
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@Injectable()
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export class StorageService {
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constructor() {}
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private parseOption(option?: Option) {
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const storage = option?.stroage === "session" ? sessionStorage : localStorage;
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const serializer = option?.serializer ? option?.serializer : JSON.stringify;
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const deserializer = option?.deserializer ? option?.deserializer : JSON.parse;
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let defaultValue = option?.defaultValue;
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if (isFunction(option?.defaultValue)) {
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defaultValue = option?.defaultValue();
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}
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return {
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storage,
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serializer,
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deserializer,
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defaultValue,
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};
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}
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get<T>(key: string, option?: Option<T>) {
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const { storage, deserializer, defaultValue } = this.parseOption(option);
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try {
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const val = storage.getItem(key);
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if (val) {
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return deserializer(val);
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}
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} catch (error) {
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console.error(error);
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}
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return defaultValue;
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}
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set<T>(key: string, value: T | IFunc<T>, option?: Option<T>) {
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const { storage, serializer, defaultValue } = this.parseOption(option);
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const val = (isFunction(value) ? value() : value) ?? defaultValue;
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if (typeof val === "undefined") {
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storage.removeItem(key);
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} else {
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try {
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storage.setItem(key, serializer(val));
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} catch (error) {
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console.error(error);
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}
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}
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}
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remove(key: string, option?: Pick<Option, "stroage">) {
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const { storage } = this.parseOption(option);
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storage.removeItem(key);
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}
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clear(option?: Pick<Option, "stroage">) {
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const { storage } = this.parseOption(option);
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storage.clear();
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}
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keys(option?: Pick<Option, "stroage">) {
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const { storage } = this.parseOption(option);
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return Object.keys(storage);
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}
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}
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