resolve method

@override Future<ResolvedIdentity> resolve(String identity)

Resolves a handle (alice.example, optionally @/at:// prefixed) or a DID (did:plc: / did:web:) to its atproto identity.

Implementation

@override
Future<ResolvedIdentity> resolve(final String identity) async {
  final normalized = _normalizeIdentity(identity, name: 'identity');

  final String did;
  final String? suppliedHandle;
  if (normalized.startsWith('did:')) {
    did = normalized;
    suppliedHandle = null;
  } else {
    suppliedHandle = normalized.toLowerCase();
    did = await _resolveHandle(suppliedHandle);
  }

  final didDocument = await _resolveDidDocument(did);

  final String handle;
  if (suppliedHandle != null) {
    final claimed = _claimedHandleOf(didDocument);
    if (claimed != suppliedHandle) {
      throw IdentityException(
        'Bidirectional handle verification failed: the DID document for '
        '"$did" claims ${claimed == null ? 'no handle' : '"$claimed"'}, '
        'not "$suppliedHandle"',
      );
    }
    handle = suppliedHandle;
  } else {
    handle = await _verifiedHandleOf(didDocument, did);
  }

  return ResolvedIdentity(
    did: did,
    pds: _extractPdsEndpoint(didDocument, did),
    handle: handle,
    signingKey: signingKeyOf(didDocument, did),
  );
}