bjkim1
21ebb16fb7
- SPipe_server_2026-10-30.zip 내용을 풀어서 등록 (압축 파일은 올리지 않음) - README에 데모 v2 서버 업데이트 순서 추가, 저장소에 없는 문서 목차 정리 - 패치내역을 docs/로 이동, _worklog.md 추가 - 임시 파일(backend/temp.*)과 API 키가 든 파일은 제외
70 lines
2.6 KiB
TypeScript
70 lines
2.6 KiB
TypeScript
// 자동 백업: versioned INP (+ asset attributes) copies of the model kept in a
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// separate IndexedDB, so a bad edit hours ago can still be undone after the
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// autosave (which keeps only the latest state) has overwritten it.
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import type { AssetStore } from './assets';
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const DB_NAME = 'spipe-backups';
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const STORE = 'backups';
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export const MAX_BACKUPS = 30;
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export interface BackupRecord {
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id: string;
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savedAt: string;
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fileName: string;
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reason: 'auto' | 'manual';
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inp: string;
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assets?: AssetStore;
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nodes: number;
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links: number;
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}
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function open(): Promise<IDBDatabase> {
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return new Promise((resolve, reject) => {
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const req = indexedDB.open(DB_NAME, 1);
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req.onupgradeneeded = () => {
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if (!req.result.objectStoreNames.contains(STORE)) req.result.createObjectStore(STORE, { keyPath: 'id' });
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};
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req.onsuccess = () => resolve(req.result);
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req.onerror = () => reject(req.error ?? new Error('백업 저장소를 열 수 없습니다.'));
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});
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}
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async function withStore<T>(mode: IDBTransactionMode, fn: (store: IDBObjectStore) => IDBRequest<T> | void): Promise<T | undefined> {
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const db = await open();
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try {
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return await new Promise<T | undefined>((resolve, reject) => {
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const tx = db.transaction(STORE, mode);
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const req = fn(tx.objectStore(STORE));
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tx.oncomplete = () => resolve(req ? req.result : undefined);
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tx.onerror = () => reject(tx.error ?? new Error('백업 저장소 오류'));
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tx.onabort = () => reject(tx.error ?? new Error('백업 저장 중단'));
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});
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} finally {
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db.close();
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}
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}
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export async function listBackups(): Promise<BackupRecord[]> {
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const all = ((await withStore<BackupRecord[]>('readonly', (s) => s.getAll())) ?? []) as BackupRecord[];
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return all.sort((a, b) => (a.savedAt < b.savedAt ? 1 : -1));
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}
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/** Save a backup unless it is identical to the newest one; trims to MAX_BACKUPS. */
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export async function saveBackup(rec: Omit<BackupRecord, 'id' | 'savedAt'>): Promise<boolean> {
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const existing = await listBackups();
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const last = existing[0];
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if (last && last.inp === rec.inp && JSON.stringify(last.assets ?? null) === JSON.stringify(rec.assets ?? null)) return false;
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const savedAt = new Date().toISOString();
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await withStore('readwrite', (s) => {
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s.put({ ...rec, id: `${savedAt}_${Math.random().toString(36).slice(2, 7)}`, savedAt });
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for (const old of existing.slice(MAX_BACKUPS - 1)) s.delete(old.id);
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});
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return true;
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}
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export async function deleteBackup(id: string): Promise<void> {
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await withStore('readwrite', (s) => {
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s.delete(id);
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});
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}
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