export class MnemonicProvider implements SendProvider {
    #wallet: OpenedContract<WalletInstance>;
    #secretKey: Buffer;
    #client: TonClient4 | TonClient;
    #ui: UIProvider;

    constructor(params: {
        version: WalletVersion;
        workchain?: number;
        secretKey: Buffer;
        client: TonClient4 | TonClient;
        ui: UIProvider;
        // here sould bw walletId
    }) {
        if (!(params.version in wallets)) {
            throw new Error(`Unknown wallet version ${params.version}`);
        }

        const kp = keyPairFromSecretKey(params.secretKey);
        this.#client = params.client;
        this.#wallet = openContract<WalletInstance>(
            wallets[params.version].create({
                workchain: params.workchain ?? 0,
                publicKey: kp.publicKey,
                // here should be walletId
            }),
            (params) => this.#client.provider(params.address, params.init),
        );
        this.#secretKey = kp.secretKey;
        this.#ui = params.ui;
    }
    // ...
}