// Files backup: the folders the person chose through the system's picker,
// sent into `<folder>/<account>-drive/<chosen folder>/…` of the destination
// every backup shares (sync-destination.js), once a day, on an unmetered
// network, like photos (docs/MESHBAY_DESIGN.md §9.13).
//
// The phone (platform.driveSync) lists the files, leaves out what the photo
// backup sends, keeps the ledger and hands each file over a range at a time;
// the running is the photo backup's own (createBackup). Additive by
// construction: a new version of a file goes beside the one sent, and nothing
// here deletes, renames or replaces anything on the node.

import * as platform from './platform.js';
import { t } from './i18n.js';
import { createBackup } from './photo-sync.js';
import { LASTING, failureText } from './phone-sync.js';

const drive = createBackup({
  name: 'files',
  sync: platform.driveSync,
  configured: (status) => Boolean(status.on) && (status.folders || []).length > 0,
  progress: 'drivesync.notif_progress',
  failures: LASTING,
  say: (code) => t('phonesync.notice', { what: t('drivesync.heading'), reason: failureText(code) }),
});

export const startDriveSync = (context) => drive.start(context);
export const stopDriveSync = () => drive.stop();
export const runDriveSync = (opts) => drive.run(opts);
export const subscribe = (fn) => drive.subscribe(fn);