veilid/veilid-flutter/lib/veilid_js.dart

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import 'dart:async';
import 'dart:convert';
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import 'dart:html' as html;
import 'dart:js' as js;
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import 'dart:js_interop' as js_interop;
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import 'dart:js_util' as js_util;
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import 'dart:typed_data';
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import 'veilid.dart';
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//////////////////////////////////////////////////////////
Veilid getVeilid() => VeilidJS();
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Object wasm = js_util.getProperty(html.window, 'veilid_wasm');
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Uint8List convertUint8ListFromJson(dynamic json) => Uint8List.fromList(
((json as js_interop.JSArray).dartify()! as List<Object?>)
.map((e) => e! as int)
.toList());
dynamic convertUint8ListToJson(Uint8List data) => data.toList().jsify();
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Future<T> _wrapApiPromise<T>(Object p) => js_util
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.promiseToFuture<T>(p)
.then((value) => value)
// ignore: inference_failure_on_untyped_parameter
.catchError((e) {
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try {
final ex = VeilidAPIException.fromJson(jsonDecode(e as String));
throw ex;
} on Exception catch (_) {
// Wrap all other errors in VeilidAPIExceptionInternal
throw VeilidAPIExceptionInternal(e.toString());
}
});
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class _Ctx {
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_Ctx(int id, this.js) : _id = id;
int? _id;
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final VeilidJS js;
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int requireId() {
if (_id == null) {
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throw VeilidAPIExceptionNotInitialized();
}
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return _id!;
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}
void close() {
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if (_id != null) {
js_util.callMethod<void>(wasm, 'release_routing_context', [_id]);
_id = null;
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}
}
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}
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// JS implementation of VeilidRoutingContext
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class VeilidRoutingContextJS extends VeilidRoutingContext {
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VeilidRoutingContextJS._(this._ctx) {
_finalizer.attach(this, _ctx, detach: this);
}
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final _Ctx _ctx;
static final Finalizer<_Ctx> _finalizer = Finalizer((ctx) => ctx.close());
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@override
void close() {
_ctx.close();
}
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@override
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VeilidRoutingContextJS withDefaultSafety() {
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final id = _ctx.requireId();
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final int newId =
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js_util.callMethod(wasm, 'routing_context_with_default_safety', [id]);
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return VeilidRoutingContextJS._(_Ctx(newId, _ctx.js));
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}
@override
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VeilidRoutingContextJS withSafety(SafetySelection safetySelection) {
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final id = _ctx.requireId();
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final newId = js_util.callMethod<int>(
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wasm, 'routing_context_with_safety', [id, jsonEncode(safetySelection)]);
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return VeilidRoutingContextJS._(_Ctx(newId, _ctx.js));
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}
@override
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VeilidRoutingContextJS withSequencing(Sequencing sequencing) {
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final id = _ctx.requireId();
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final newId = js_util.callMethod<int>(
wasm, 'routing_context_with_sequencing', [id, jsonEncode(sequencing)]);
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return VeilidRoutingContextJS._(_Ctx(newId, _ctx.js));
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}
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@override
Future<SafetySelection> safety() async {
final id = _ctx.requireId();
return SafetySelection.fromJson(jsonDecode(await _wrapApiPromise(
js_util.callMethod(wasm, 'routing_context_safety', [
id,
]))));
}
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@override
Future<Uint8List> appCall(String target, Uint8List request) async {
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final id = _ctx.requireId();
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final encodedRequest = base64UrlNoPadEncode(request);
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return base64UrlNoPadDecode(await _wrapApiPromise(js_util.callMethod(
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wasm, 'routing_context_app_call', [id, target, encodedRequest])));
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}
@override
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Future<void> appMessage(String target, Uint8List message) {
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final id = _ctx.requireId();
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final encodedMessage = base64UrlNoPadEncode(message);
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return _wrapApiPromise(js_util.callMethod(
wasm, 'routing_context_app_message', [id, target, encodedMessage]));
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}
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@override
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Future<DHTRecordDescriptor> createDHTRecord(DHTSchema schema,
{CryptoKind kind = 0}) async {
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final id = _ctx.requireId();
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return DHTRecordDescriptor.fromJson(jsonDecode(await _wrapApiPromise(js_util
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.callMethod(wasm, 'routing_context_create_dht_record',
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[id, jsonEncode(schema), kind]))));
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}
@override
Future<DHTRecordDescriptor> openDHTRecord(
TypedKey key, KeyPair? writer) async {
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final id = _ctx.requireId();
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return DHTRecordDescriptor.fromJson(jsonDecode(await _wrapApiPromise(js_util
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.callMethod(wasm, 'routing_context_open_dht_record', [
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id,
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jsonEncode(key),
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if (writer != null) jsonEncode(writer) else null
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]))));
}
@override
Future<void> closeDHTRecord(TypedKey key) {
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final id = _ctx.requireId();
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return _wrapApiPromise(js_util.callMethod(
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wasm, 'routing_context_close_dht_record', [id, jsonEncode(key)]));
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}
@override
Future<void> deleteDHTRecord(TypedKey key) {
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final id = _ctx.requireId();
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return _wrapApiPromise(js_util.callMethod(
wasm, 'routing_context_delete_dht_record', [id, jsonEncode(key)]));
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}
@override
Future<ValueData?> getDHTValue(
TypedKey key, int subkey, bool forceRefresh) async {
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final id = _ctx.requireId();
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final opt = await _wrapApiPromise<String?>(js_util.callMethod(
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wasm,
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'routing_context_get_dht_value',
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[id, jsonEncode(key), subkey, forceRefresh]));
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if (opt == null) {
return null;
}
final jsonOpt = jsonDecode(opt);
return jsonOpt == null ? null : ValueData.fromJson(jsonOpt);
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}
@override
Future<ValueData?> setDHTValue(
TypedKey key, int subkey, Uint8List data) async {
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final id = _ctx.requireId();
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final opt = await _wrapApiPromise<String?>(js_util.callMethod(
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wasm,
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'routing_context_set_dht_value',
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[id, jsonEncode(key), subkey, base64UrlNoPadEncode(data)]));
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if (opt == null) {
return null;
}
final jsonOpt = jsonDecode(opt);
return jsonOpt == null ? null : ValueData.fromJson(jsonOpt);
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}
@override
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Future<Timestamp> watchDHTValues(TypedKey key, List<ValueSubkeyRange> subkeys,
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Timestamp expiration, int count) async {
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final id = _ctx.requireId();
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final ts = await _wrapApiPromise<String>(js_util.callMethod(
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wasm, 'routing_context_watch_dht_values', [
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id,
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jsonEncode(key),
jsonEncode(subkeys),
expiration.toString(),
count
]));
return Timestamp.fromString(ts);
}
@override
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Future<bool> cancelDHTWatch(TypedKey key, List<ValueSubkeyRange> subkeys) {
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final id = _ctx.requireId();
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return _wrapApiPromise(js_util.callMethod(
wasm,
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'routing_context_cancel_dht_watch',
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[id, jsonEncode(key), jsonEncode(subkeys)]));
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}
}
// JS implementation of VeilidCryptoSystem
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class VeilidCryptoSystemJS extends VeilidCryptoSystem {
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VeilidCryptoSystemJS._(this._js, this._kind);
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final CryptoKind _kind;
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// Keep the reference
// ignore: unused_field
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final VeilidJS _js;
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@override
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CryptoKind kind() => _kind;
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@override
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Future<SharedSecret> cachedDH(PublicKey key, SecretKey secret) async =>
SharedSecret.fromJson(jsonDecode(await _wrapApiPromise(js_util.callMethod(
wasm,
'crypto_cached_dh',
[_kind, jsonEncode(key), jsonEncode(secret)]))));
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@override
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Future<SharedSecret> computeDH(PublicKey key, SecretKey secret) async =>
SharedSecret.fromJson(jsonDecode(await _wrapApiPromise(js_util.callMethod(
wasm,
'crypto_compute_dh',
[_kind, jsonEncode(key), jsonEncode(secret)]))));
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@override
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Future<Uint8List> randomBytes(int len) async =>
base64UrlNoPadDecode(await _wrapApiPromise(
js_util.callMethod(wasm, 'crypto_random_bytes', [_kind, len])));
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@override
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Future<int> defaultSaltLength() => _wrapApiPromise(
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js_util.callMethod(wasm, 'crypto_default_salt_length', [_kind]));
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@override
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Future<String> hashPassword(Uint8List password, Uint8List salt) =>
_wrapApiPromise(js_util.callMethod(wasm, 'crypto_hash_password',
[_kind, base64UrlNoPadEncode(password), base64UrlNoPadEncode(salt)]));
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@override
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Future<bool> verifyPassword(Uint8List password, String passwordHash) =>
_wrapApiPromise(js_util.callMethod(wasm, 'crypto_verify_password',
[_kind, base64UrlNoPadEncode(password), passwordHash]));
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@override
Future<SharedSecret> deriveSharedSecret(
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Uint8List password, Uint8List salt) async =>
SharedSecret.fromJson(jsonDecode(await _wrapApiPromise(js_util.callMethod(
wasm, 'crypto_derive_shared_secret', [
_kind,
base64UrlNoPadEncode(password),
base64UrlNoPadEncode(salt)
]))));
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@override
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Future<Nonce> randomNonce() async =>
Nonce.fromJson(jsonDecode(await _wrapApiPromise(
js_util.callMethod(wasm, 'crypto_random_nonce', [_kind]))));
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@override
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Future<SharedSecret> randomSharedSecret() async =>
SharedSecret.fromJson(jsonDecode(await _wrapApiPromise(
js_util.callMethod(wasm, 'crypto_random_shared_secret', [_kind]))));
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@override
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Future<KeyPair> generateKeyPair() async =>
KeyPair.fromJson(jsonDecode(await _wrapApiPromise(
js_util.callMethod(wasm, 'crypto_generate_key_pair', [_kind]))));
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@override
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Future<HashDigest> generateHash(Uint8List data) async =>
HashDigest.fromJson(jsonDecode(await _wrapApiPromise(js_util.callMethod(
wasm, 'crypto_generate_hash', [_kind, base64UrlNoPadEncode(data)]))));
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@override
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Future<bool> validateKeyPair(PublicKey key, SecretKey secret) =>
_wrapApiPromise(js_util.callMethod(wasm, 'crypto_validate_key_pair',
[_kind, jsonEncode(key), jsonEncode(secret)]));
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@override
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Future<bool> validateHash(Uint8List data, HashDigest hash) =>
_wrapApiPromise(js_util.callMethod(wasm, 'crypto_validate_hash',
[_kind, base64UrlNoPadEncode(data), jsonEncode(hash)]));
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@override
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Future<CryptoKeyDistance> distance(CryptoKey key1, CryptoKey key2) async =>
CryptoKeyDistance.fromJson(jsonDecode(await _wrapApiPromise(js_util
.callMethod(wasm, 'crypto_distance',
[_kind, jsonEncode(key1), jsonEncode(key2)]))));
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@override
Future<Signature> sign(
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PublicKey key, SecretKey secret, Uint8List data) async =>
Signature.fromJson(jsonDecode(await _wrapApiPromise(js_util.callMethod(
wasm, 'crypto_sign', [
_kind,
jsonEncode(key),
jsonEncode(secret),
base64UrlNoPadEncode(data)
]))));
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@override
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Future<void> verify(PublicKey key, Uint8List data, Signature signature) =>
_wrapApiPromise(js_util.callMethod(wasm, 'crypto_verify', [
_kind,
jsonEncode(key),
base64UrlNoPadEncode(data),
jsonEncode(signature),
]));
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@override
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Future<int> aeadOverhead() => _wrapApiPromise(
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js_util.callMethod(wasm, 'crypto_aead_overhead', [_kind]));
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@override
Future<Uint8List> decryptAead(Uint8List body, Nonce nonce,
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SharedSecret sharedSecret, Uint8List? associatedData) async =>
base64UrlNoPadDecode(await _wrapApiPromise(
js_util.callMethod(wasm, 'crypto_decrypt_aead', [
_kind,
base64UrlNoPadEncode(body),
jsonEncode(nonce),
jsonEncode(sharedSecret),
if (associatedData != null)
base64UrlNoPadEncode(associatedData)
else
null
])));
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@override
Future<Uint8List> encryptAead(Uint8List body, Nonce nonce,
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SharedSecret sharedSecret, Uint8List? associatedData) async =>
base64UrlNoPadDecode(await _wrapApiPromise(
js_util.callMethod(wasm, 'crypto_encrypt_aead', [
_kind,
base64UrlNoPadEncode(body),
jsonEncode(nonce),
jsonEncode(sharedSecret),
if (associatedData != null)
base64UrlNoPadEncode(associatedData)
else
null
])));
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@override
Future<Uint8List> cryptNoAuth(
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Uint8List body, Nonce nonce, SharedSecret sharedSecret) async =>
base64UrlNoPadDecode(await _wrapApiPromise(js_util.callMethod(
wasm, 'crypto_crypt_no_auth', [
_kind,
base64UrlNoPadEncode(body),
jsonEncode(nonce),
jsonEncode(sharedSecret)
])));
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}
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class _TDBT {
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_TDBT(this.id, this.tdbjs, this.js);
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int? id;
final VeilidTableDBJS tdbjs;
final VeilidJS js;
void ensureValid() {
if (id == null) {
throw VeilidAPIExceptionNotInitialized();
}
}
void close() {
if (id != null) {
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js_util.callMethod<void>(wasm, 'release_table_db_transaction', [id]);
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id = null;
}
}
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}
// JS implementation of VeilidTableDBTransaction
class VeilidTableDBTransactionJS extends VeilidTableDBTransaction {
VeilidTableDBTransactionJS._(this._tdbt) {
_finalizer.attach(this, _tdbt, detach: this);
}
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final _TDBT _tdbt;
static final Finalizer<_TDBT> _finalizer = Finalizer((tdbt) => tdbt.close());
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@override
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bool isDone() => _tdbt.id == null;
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@override
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Future<void> commit() async {
_tdbt.ensureValid();
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final id = _tdbt.id!;
await _wrapApiPromise<void>(
js_util.callMethod(wasm, 'table_db_transaction_commit', [id]));
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_tdbt.close();
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}
@override
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Future<void> rollback() async {
_tdbt.ensureValid();
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final id = _tdbt.id!;
await _wrapApiPromise<void>(
js_util.callMethod(wasm, 'table_db_transaction_rollback', [id]));
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_tdbt.close();
}
@override
Future<void> store(int col, Uint8List key, Uint8List value) async {
_tdbt.ensureValid();
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final id = _tdbt.id!;
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final encodedKey = base64UrlNoPadEncode(key);
final encodedValue = base64UrlNoPadEncode(value);
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await _wrapApiPromise<void>(js_util.callMethod(wasm,
'table_db_transaction_store', [id, col, encodedKey, encodedValue]));
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}
@override
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Future<void> delete(int col, Uint8List key) async {
_tdbt.ensureValid();
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final id = _tdbt.id!;
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final encodedKey = base64UrlNoPadEncode(key);
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await _wrapApiPromise<void>(js_util.callMethod(
wasm, 'table_db_transaction_delete', [id, col, encodedKey]));
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}
}
class _TDB {
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_TDB(int id, this.js) : _id = id;
int? _id;
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final VeilidJS js;
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int requireId() {
if (_id == null) {
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throw VeilidAPIExceptionNotInitialized();
}
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return _id!;
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}
void close() {
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if (_id != null) {
js_util.callMethod<void>(wasm, 'release_table_db', [_id]);
_id = null;
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}
}
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}
// JS implementation of VeilidTableDB
class VeilidTableDBJS extends VeilidTableDB {
VeilidTableDBJS._(this._tdb) {
_finalizer.attach(this, _tdb, detach: this);
}
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final _TDB _tdb;
static final Finalizer<_TDB> _finalizer = Finalizer((tdb) => tdb.close());
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@override
void close() {
_tdb.close();
}
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@override
int getColumnCount() {
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final id = _tdb.requireId();
return js_util.callMethod(wasm, 'table_db_get_column_count', [id]);
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}
@override
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Future<List<Uint8List>> getKeys(int col) async {
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final id = _tdb.requireId();
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return jsonListConstructor(base64UrlNoPadDecodeDynamic)(jsonDecode(
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await js_util.callMethod(wasm, 'table_db_get_keys', [id, col])));
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}
@override
VeilidTableDBTransaction transact() {
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final id = _tdb.requireId();
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final xid = js_util.callMethod<int>(wasm, 'table_db_transact', [id]);
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return VeilidTableDBTransactionJS._(_TDBT(xid, this, _tdb.js));
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}
@override
Future<void> store(int col, Uint8List key, Uint8List value) {
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final id = _tdb.requireId();
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final encodedKey = base64UrlNoPadEncode(key);
final encodedValue = base64UrlNoPadEncode(value);
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return _wrapApiPromise(js_util.callMethod(
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wasm, 'table_db_store', [id, col, encodedKey, encodedValue]));
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}
@override
Future<Uint8List?> load(int col, Uint8List key) async {
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final id = _tdb.requireId();
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final encodedKey = base64UrlNoPadEncode(key);
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final out = await _wrapApiPromise<String?>(
js_util.callMethod(wasm, 'table_db_load', [id, col, encodedKey]));
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if (out == null) {
return null;
}
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return base64UrlNoPadDecode(out);
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}
@override
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Future<Uint8List?> delete(int col, Uint8List key) async {
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final id = _tdb.requireId();
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final encodedKey = base64UrlNoPadEncode(key);
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final out = await _wrapApiPromise<String?>(
js_util.callMethod(wasm, 'table_db_delete', [id, col, encodedKey]));
if (out == null) {
return null;
}
return base64UrlNoPadDecode(out);
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}
}
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// JS implementation of high level Veilid API
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class VeilidJS extends Veilid {
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@override
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void initializeVeilidCore(Map<String, dynamic> platformConfigJson) {
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final platformConfigJsonString = jsonEncode(platformConfigJson);
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js_util.callMethod<void>(
wasm, 'initialize_veilid_core', [platformConfigJsonString]);
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}
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@override
void changeLogLevel(String layer, VeilidConfigLogLevel logLevel) {
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final logLevelJsonString = jsonEncode(logLevel);
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js_util.callMethod<void>(
wasm, 'change_log_level', [layer, logLevelJsonString]);
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}
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@override
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Future<Stream<VeilidUpdate>> startupVeilidCore(VeilidConfig config) async {
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final streamController = StreamController<VeilidUpdate>();
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void updateCallback(String update) {
final updateJson = jsonDecode(update) as Map<String, dynamic>;
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if (updateJson['kind'] == 'Shutdown') {
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unawaited(streamController.close());
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} else {
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final update = VeilidUpdate.fromJson(updateJson);
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streamController.add(update);
}
}
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await _wrapApiPromise<void>(js_util.callMethod(wasm, 'startup_veilid_core',
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[js.allowInterop(updateCallback), jsonEncode(config)]));
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return streamController.stream;
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}
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@override
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Future<VeilidState> getVeilidState() async =>
VeilidState.fromJson(jsonDecode(await _wrapApiPromise<String>(
js_util.callMethod(wasm, 'get_veilid_state', []))));
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@override
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Future<void> attach() =>
_wrapApiPromise(js_util.callMethod(wasm, 'attach', []));
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@override
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Future<void> detach() =>
_wrapApiPromise(js_util.callMethod(wasm, 'detach', []));
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@override
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Future<void> shutdownVeilidCore() =>
_wrapApiPromise(js_util.callMethod(wasm, 'shutdown_veilid_core', []));
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@override
List<CryptoKind> validCryptoKinds() {
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final vck = jsonDecode(js_util.callMethod(wasm, 'valid_crypto_kinds', []))
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as List<dynamic>;
return vck.map((v) => v as CryptoKind).toList();
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}
@override
Future<VeilidCryptoSystem> getCryptoSystem(CryptoKind kind) async {
if (!validCryptoKinds().contains(kind)) {
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throw const VeilidAPIExceptionGeneric('unsupported cryptosystem');
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}
return VeilidCryptoSystemJS._(this, kind);
}
@override
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Future<VeilidCryptoSystem> bestCryptoSystem() async => VeilidCryptoSystemJS._(
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this, js_util.callMethod(wasm, 'best_crypto_kind', []));
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@override
Future<List<TypedKey>> verifySignatures(List<TypedKey> nodeIds,
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Uint8List data, List<TypedSignature> signatures) async =>
jsonListConstructor(TypedKey.fromJson)(jsonDecode(await _wrapApiPromise(
js_util.callMethod(wasm, 'verify_signatures', [
jsonEncode(nodeIds),
base64UrlNoPadEncode(data),
jsonEncode(signatures)
]))));
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@override
Future<List<TypedSignature>> generateSignatures(
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Uint8List data, List<TypedKeyPair> keyPairs) async =>
jsonListConstructor(TypedSignature.fromJson)(jsonDecode(
await _wrapApiPromise(js_util.callMethod(wasm, 'generate_signatures',
[base64UrlNoPadEncode(data), jsonEncode(keyPairs)]))));
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@override
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Future<TypedKeyPair> generateKeyPair(CryptoKind kind) async =>
TypedKeyPair.fromJson(jsonDecode(await _wrapApiPromise(
js_util.callMethod(wasm, 'generate_key_pair', [kind]))));
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@override
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Future<VeilidRoutingContext> routingContext() async {
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final rcid = await _wrapApiPromise<int>(
js_util.callMethod(wasm, 'routing_context', []));
return VeilidRoutingContextJS._(_Ctx(rcid, this));
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}
@override
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Future<RouteBlob> newPrivateRoute() async =>
RouteBlob.fromJson(jsonDecode(await _wrapApiPromise(
js_util.callMethod(wasm, 'new_private_route', []))));
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@override
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Future<RouteBlob> newCustomPrivateRoute(
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Stability stability, Sequencing sequencing) async {
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final stabilityString = jsonEncode(stability);
final sequencingString = jsonEncode(sequencing);
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return RouteBlob.fromJson(jsonDecode(await _wrapApiPromise(js_util
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.callMethod(
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wasm, 'new_private_route', [stabilityString, sequencingString]))));
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}
@override
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Future<String> importRemotePrivateRoute(Uint8List blob) {
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final encodedBlob = base64UrlNoPadEncode(blob);
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return _wrapApiPromise(
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js_util.callMethod(wasm, 'import_remote_private_route', [encodedBlob]));
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}
@override
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Future<void> releasePrivateRoute(String key) =>
_wrapApiPromise(js_util.callMethod(wasm, 'release_private_route', [key]));
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@override
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Future<void> appCallReply(String callId, Uint8List message) {
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final encodedMessage = base64UrlNoPadEncode(message);
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return _wrapApiPromise(
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js_util.callMethod(wasm, 'app_call_reply', [callId, encodedMessage]));
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}
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@override
Future<VeilidTableDB> openTableDB(String name, int columnCount) async {
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final dbid = await _wrapApiPromise<int>(
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js_util.callMethod(wasm, 'open_table_db', [name, columnCount]));
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return VeilidTableDBJS._(_TDB(dbid, this));
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}
@override
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Future<bool> deleteTableDB(String name) =>
_wrapApiPromise(js_util.callMethod(wasm, 'delete_table_db', [name]));
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@override
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Timestamp now() => Timestamp.fromString(js_util.callMethod(wasm, 'now', []));
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@override
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Future<String> debug(String command) async =>
_wrapApiPromise(js_util.callMethod(wasm, 'debug', [command]));
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@override
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String veilidVersionString() =>
js_util.callMethod(wasm, 'veilid_version_string', []);
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@override
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VeilidVersion veilidVersion() {
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final jsonVersion =
jsonDecode(js_util.callMethod(wasm, 'veilid_version', []))
as Map<String, dynamic>;
return VeilidVersion(jsonVersion['major'] as int,
jsonVersion['minor'] as int, jsonVersion['patch'] as int);
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}
}