72 lines
1.9 KiB
JavaScript
72 lines
1.9 KiB
JavaScript
/**
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* Wrapper around window.localStorage for the Respellion platform.
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* Handles serialization/deserialization, namespaces, and quota limits.
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*/
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const STORAGE_PREFIX = 'respellion:';
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export const storage = {
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/**
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* Get an item from storage
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* @param {string} key - e.g. 'kb:topics'
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* @returns {any}
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*/
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get(key, defaultValue = null) {
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try {
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const item = window.localStorage.getItem(STORAGE_PREFIX + key);
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return item ? JSON.parse(item) : defaultValue;
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} catch (e) {
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console.error(`Error reading ${key} from storage:`, e);
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return defaultValue;
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}
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},
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/**
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* Set an item in storage
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* @param {string} key
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* @param {any} value
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*/
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set(key, value) {
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try {
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const serialized = JSON.stringify(value);
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window.localStorage.setItem(STORAGE_PREFIX + key, serialized);
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} catch (e) {
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if (e.name === 'QuotaExceededError' || e.code === 22) {
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console.error(`Storage quota exceeded when setting ${key}.`);
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// We could implement a strategy here to clear old cached kb:tests
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} else {
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console.error(`Error saving ${key} to storage:`, e);
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}
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}
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},
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/**
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* Remove an item from storage
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* @param {string} key
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*/
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remove(key) {
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try {
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window.localStorage.removeItem(STORAGE_PREFIX + key);
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} catch (e) {
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console.error(`Error removing ${key} from storage:`, e);
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}
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},
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/**
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* Get all keys matching a specific prefix (e.g. 'kb:topics:')
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* @param {string} prefix
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* @returns {string[]} Array of matching keys (without the STORAGE_PREFIX)
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*/
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getKeysByPrefix(prefix) {
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const keys = [];
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const fullPrefix = STORAGE_PREFIX + prefix;
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for (let i = 0; i < window.localStorage.length; i++) {
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const key = window.localStorage.key(i);
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if (key && key.startsWith(fullPrefix)) {
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keys.push(key.substring(STORAGE_PREFIX.length));
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}
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}
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return keys;
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}
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};
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