libJS/wallet/class.TransactionCoordinator.ts - master - mustreets/CreateTransactions

libJS/wallet/class.TransactionCoordinator.ts

61 строка2 KB

Slava

Initialize project with essential configurations and structures

14 май 2026, 22:23

14 май 2026, 22:23a89cd26

import BigNumber from "bignumber.js";
import i18n from "i18next";

import { IKeyProvider, IValueTransfer } from "./types";
import { transferSchema } from "./zod.schema";

const ERROR_MESSAGES = {
  INSUFFICIENT_FUNDS: "wallet:errors.insufficientFunds",
} as const;

export class TransactionCoordinator {
  private readonly provider: IKeyProvider;

  constructor(provider: IKeyProvider) {
    this.provider = provider;
  }

  /**
   * Комплексная проверка перед созданием транзакции
   */
  public async validateFull(data: IValueTransfer) {
    // 1. Проверка структуры через Zod
    transferSchema.parse(data);

    // 2. Получение данных из сети (баланс и текущий газ)
    const [balanceRaw, feeRaw] = await Promise.all([
      this.provider.getBalance(data.addressFrom),
      this.provider.estimateGasPrice(),
    ]);

    const balance = new BigNumber(balanceRaw);
    const amount = new BigNumber(data.value);
    const fee = new BigNumber(feeRaw);
    const sortLimit = data.gasLimit.sort((a, b) => (new BigNumber(a).lt(b) ? -1 : 1));

    // 3. Математика с большой точностью
    const totalRequired = amount
      .plus(fee)
      .multipliedBy(new BigNumber(sortLimit[0]).multipliedBy(0.03));

    if (balance.lt(totalRequired)) {
      throw new Error(
        i18n
          .t(ERROR_MESSAGES.INSUFFICIENT_FUNDS)
          .replaceAll("{totalRequired}", totalRequired.toFixed())
          .replaceAll("{currencyChain}", data.currencyChain)
          .replaceAll("{currencyAmount}", data.currencyAmount)
          .replaceAll("{currencyFee}", data.currencyAmount)
          .replaceAll("{amount}", amount.toFixed())
          .replaceAll("{fee}", fee.toFixed())
          .replaceAll("{balance}", balance.toFixed()),
      );
    }

    return {
      fee: fee.toFixed(),
      isValid: true,
      totalRequired: totalRequired.toFixed(),
    };
  }
}