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52 lines
1.6 KiB
JavaScript
52 lines
1.6 KiB
JavaScript
/**
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* Web platform settings using localStorage.
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* Returns Promises to match the Electron IPC-based API contract.
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*/
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const PREFIX = 'discord-clone-settings:';
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// Browsers spell the quota error in a few different ways across vendors.
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// Normalizing here so callers can `if (err.isQuotaError)` regardless.
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function isQuotaError(e) {
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if (!e) return false;
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const name = e.name || '';
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const code = e.code;
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return (
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name === 'QuotaExceededError' ||
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name === 'NS_ERROR_DOM_QUOTA_REACHED' ||
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code === 22 ||
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code === 1014
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);
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}
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export default {
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get(key) {
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try {
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const raw = localStorage.getItem(PREFIX + key);
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return Promise.resolve(raw !== null ? JSON.parse(raw) : undefined);
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} catch {
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// Corrupted JSON or blocked storage access — return undefined so
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// the caller falls back to defaults. Worth recovering silently
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// here because a single bad key shouldn't take down the app.
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return Promise.resolve(undefined);
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}
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},
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set(key, value) {
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try {
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localStorage.setItem(PREFIX + key, JSON.stringify(value));
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return Promise.resolve();
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} catch (e) {
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if (isQuotaError(e)) {
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// Reject so the caller can surface the quota error to the user —
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// silently swallowing meant settings just "didn't save" with no
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// warning. Decorate with a flag so callers can branch without
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// sniffing error names themselves.
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const err = new Error('Browser storage quota exceeded');
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err.isQuotaError = true;
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return Promise.reject(err);
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}
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return Promise.reject(e);
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}
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},
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};
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