import { describe, expect, it } from 'vitest';
import { loginErrorKind, normalizeHandleInput } from './handle-input';

const ok = (value: string) => ({ ok: true, value });

describe('normalizeHandleInput', () => {
  it('passes a plain handle through, lowercased', () => {
    expect(normalizeHandleInput('Erlend.sh')).toEqual(ok('erlend.sh'));
  });

  it('strips a leading @ and surrounding or invisible whitespace', () => {
    expect(normalizeHandleInput('  @name.bsky.social ')).toEqual(ok('name.bsky.social'));
    expect(normalizeHandleInput('\u200bname.bsky.social\u00a0')).toEqual(ok('name.bsky.social'));
  });

  it('completes a bare name to bsky.social', () => {
    expect(normalizeHandleInput('Name')).toEqual(ok('name.bsky.social'));
    expect(normalizeHandleInput('@name')).toEqual(ok('name.bsky.social'));
  });

  it('drops a trailing dot', () => {
    expect(normalizeHandleInput('name.bsky.social.')).toEqual(ok('name.bsky.social'));
  });

  it('extracts the handle or DID from a pasted bsky.app profile URL', () => {
    expect(normalizeHandleInput('https://bsky.app/profile/Name.bsky.social/post/abc')).toEqual(
      ok('name.bsky.social'),
    );
    expect(normalizeHandleInput('https://bsky.app/profile/did:plc:abc123')).toEqual(ok('did:plc:abc123'));
  });

  it('passes other URLs (PDS sign-in) and DIDs through untouched', () => {
    expect(normalizeHandleInput('https://eurosky.social')).toEqual(ok('https://eurosky.social'));
    expect(normalizeHandleInput('did:web:Example.com')).toEqual(ok('did:web:Example.com'));
    expect(normalizeHandleInput('at://did:plc:abc123')).toEqual(ok('did:plc:abc123'));
  });

  it('rejects an email address and empty input', () => {
    expect(normalizeHandleInput('me@example.com')).toEqual({ ok: false, reason: 'email' });
    expect(normalizeHandleInput('   ')).toEqual({ ok: false, reason: 'empty' });
    expect(normalizeHandleInput('@')).toEqual({ ok: false, reason: 'empty' });
  });
});

describe('loginErrorKind', () => {
  it('classifies identity-resolution failures as handle errors', () => {
    expect(loginErrorKind(new Error('Invalid handle "x" provided.'))).toBe('handle');
    expect(loginErrorKind(new Error('Handle "x.bsky.social" does not resolve to a DID'))).toBe('handle');
    expect(loginErrorKind(new Error('Did document for "did:plc:x" does not include the handle "y"'))).toBe(
      'handle',
    );
  });

  it('classifies everything else as generic', () => {
    expect(loginErrorKind(new Error('Failed to fetch'))).toBe('generic');
    expect(loginErrorKind('boom')).toBe('generic');
  });
});