import {
  describe,
  it,
  expect,
  vi
} from 'vitest';
import type { MessageRevision } from '../../../../shared-kernel';
import { attachRevisionSignatureIfPossible, shouldAcceptRevisionWithoutRegisteredKey } from './message-revision-signing.rules';

describe('message-revision-signing.rules', () => {
  const revision: MessageRevision = {
    messageId: 'msg-1',
    revision: 0,
    prevRevisionHash: '',
    headHash: 'hash',
    type: 'create',
    actorId: 'user-1',
    senderId: 'user-1',
    roomId: 'room-1',
    channelId: 'general',
    senderName: 'User',
    content: 'hello',
    editedAt: 1,
    isDeleted: false
  };

  it('keeps revisions unsigned when signing fails', async () => {
    const signed = await attachRevisionSignatureIfPossible(
      revision,
      vi.fn(async () => {
        throw new Error('Ed25519 unavailable');
      })
    );

    expect(signed.signature).toBeUndefined();
  });

  it('accepts signed revisions while the sender key is still registering', () => {
    expect(shouldAcceptRevisionWithoutRegisteredKey({
      ...revision,
      signature: 'signature'
    }, null)).toBe(true);

    expect(shouldAcceptRevisionWithoutRegisteredKey(revision, null)).toBe(false);
  });
});