// Where the document meets the core and the file format: both through the
// project it holds, so that the core never sees Yjs and the document never
// the core's snapshot (plan §5.2).

import type * as Y from 'yjs';
import type { TopologySnapshot } from '@mdg-filius/core';
import { projectSnapshot, saveProjectArchive } from '@mdg-filius/fls';
import { readProject } from './projectDoc.js';

/** The core's snapshot of the document, to start a simulation with. */
export function docSnapshot(doc: Y.Doc): TopologySnapshot {
  return projectSnapshot(readProject(doc));
}

/** The document as a .fls file, and what the export had to leave out. */
export function docArchive(doc: Y.Doc): { readonly archive: Uint8Array; readonly warnings: string[] } {
  return saveProjectArchive(readProject(doc));
}