import { describe, expect, it, vi } from 'vitest';
import { MatrixUsernameResolver } from '../src/services/chat/matrix/username-resolver.js';

describe('MatrixUsernameResolver', () => {
  it('resolves Reddit t2 IDs from authenticated Matrix profile display names', async () => {
    const getUserProfile = vi.fn(async (mxid: string) => {
      const profiles: Record<string, { displayname?: string }> = {
        '@t2_26q364ua7n:reddit.com': { displayname: 'MilkyBabe_10' },
        '@t2_j8e83d38:reddit.com': { displayname: 'IssueLesss' },
      };
      return profiles[mxid] ?? {};
    });
    const resolver = new MatrixUsernameResolver({ getUserProfile });

    await expect(
      resolver.resolveT2Ids(['t2_26q364ua7n', 'j8e83d38']),
    ).resolves.toEqual({
      t2_26q364ua7n: 'MilkyBabe_10',
      t2_j8e83d38: 'IssueLesss',
    });
    expect(getUserProfile).toHaveBeenCalledWith('@t2_26q364ua7n:reddit.com');
    expect(getUserProfile).toHaveBeenCalledWith('@t2_j8e83d38:reddit.com');
  });

  it('ignores missing and t2-shaped display names without failing the batch', async () => {
    const getUserProfile = vi.fn(async (mxid: string) => {
      if (mxid === '@t2_missing:reddit.com') throw new Error('not found');
      return { displayname: 't2_unresolved' };
    });
    const resolver = new MatrixUsernameResolver({ getUserProfile });

    await expect(
      resolver.resolveT2Ids(['t2_missing', 't2_unresolved']),
    ).resolves.toEqual({});
  });

  it('uses replacement Matrix credentials for subsequent profile requests', async () => {
    const staleClient = { getUserProfile: vi.fn().mockRejectedValue(new Error('expired')) };
    const freshClient = {
      getUserProfile: vi.fn().mockResolvedValue({ displayname: 'alice' }),
    };
    const resolver = new MatrixUsernameResolver(staleClient);

    resolver.setMatrixClient(freshClient);

    await expect(resolver.resolveT2Ids(['t2_alice'])).resolves.toEqual({ t2_alice: 'alice' });
    expect(staleClient.getUserProfile).not.toHaveBeenCalled();
    expect(freshClient.getUserProfile).toHaveBeenCalledWith('@t2_alice:reddit.com');
  });
});