4 - Add accounts: light sync

src/renderer/components/OperationsList/ConfirmationCheck.js

src/icons/OperationStatusIcon/index.js

import type { BigNumber } from "bignumber.js";
import type {
  TransactionCommon,
  TransactionCommonRaw,
} from "@ledgerhq/types-live";
 
/**
 * MyCoin account resources
 */
export type MyCoinResources = {
  nonce: number;
  additionalBalance: BigNumber;
};
 
/**
 * MyCoin account resources from raw JSON
 */
export type MyCoinResourcesRaw = {
  nonce: number;
  additionalBalance: string;
};
 
/**
 * MyCoin transaction
 */
export type Transaction = TransactionCommon & {
  mode: string;
  family: "mycoin";
  fees?: BigNumber;
  // add here all transaction-specific fields if you implement other modes than "send"
};
 
/**
 * MyCoin transaction from a raw JSON
 */
export type TransactionRaw = TransactionCommonRaw & {
  family: "mycoin";
  mode: string;
  fees?: string;
  // also the transaction fields as raw JSON data
};
 
/**
 * MyCoin currency data that will be preloaded.
 * You can for instance add a list of validators for Proof-of-Stake blockchains,
 * or any volatile data that could not be set as constants in the code (staking progress, fee estimation variables, etc.)
 */
export type MyCoinPreloadData = {
  somePreloadedData: Record<any, any>;
};

import { BigNumber } from "bignumber.js";
import type { MyCoinResourcesRaw, MyCoinResources } from "./types";
 
export function toMyCoinResourcesRaw(r: MyCoinResources): MyCoinResourcesRaw {
  const { nonce, additionalBalance } = r;
  return {
    nonce,
    additionalBalance: additionalBalance.toString(),
  };
}
 
export function fromMyCoinResourcesRaw(r: MyCoinResourcesRaw): MyCoinResources {
  const { nonce, additionalBalance } = r;
  return {
    nonce,
    additionalBalance: BigNumber(additionalBalance),
  };
}

// ...
 
export type MyCoinResources = {}
export type MyCoinResourcesRaw = {}
 
export type Account = {
// ...
// // On some blockchain, an account can have resources (gained, delegated, ...)
  myCoinResources?: MyCoinResources;
};
 
export type AccountRaw = {
  myCoinResources?: MyCoinResourcesRaw;
};

import { Account, AccountRaw } from "@ledgerhq/types-live";
import {
  toMyCoinResourcesRaw,
  fromMyCoinResourcesRaw,
} from "./types";
// ...
 
function toMyCoinResourcesRaw(r: MyCoinResources): MyCoinResourcesRaw {
//     ...
}
function fromMyCoinResourcesRaw(r: MyCoinResourcesRaw): MyCoinResources {
//     ...
}
 
export function assignToAccountRaw(account: Account, accountRaw: AccountRaw) {
  const myCoinAccount = account as MyCoinAccount;
  const myCoinAccountRaw = accountRaw as MyCoinAccountRaw;
  if (myCoinAccount.mycoinResources) {
    myCoinAccountRaw.mycoinResources = toMyCoinResourcesRaw(
      myCoinAccount.mycoinResources,
    );
  }
}
export function assignFromAccountRaw(accountRaw: AccountRaw, account: Account) {
  const myCoinResourcesRaw = (accountRaw as MyCoinAccountRaw).myCoinResources;
  if (myCoinResourcesRaw) {
    (account as MyCoinAccount).myCoinResources = fromMyCoinResourcesRaw(myCoinResourcesRaw);
  }
}

import type { Unit } from "@ledgerhq/types-cryptoassets";
import type { Account, Operation } from "@ledgerhq/types-live";
import { getAccountUnit } from "@ledgerhq/coin-framework/account/index";
import { formatCurrencyUnit } from "@ledgerhq/coin-framework/currencies/index";
import { BigNumber } from "bignumber.js";
 
function formatAccountSpecifics(account: Account): string {
  const { myCoinResources } = account;
  if (!myCoinResources) {
    throw new Error("mycoin account expected");
  }
 
  const unit = getAccountUnit(account);
  const formatConfig = {
    disableRounding: true,
    alwaysShowSign: false,
    showCode: true,
  };
 
  let str = " ";
 
  str +=
    formatCurrencyUnit(unit, account.spendableBalance, formatConfig) +
    " spendable. ";
 
  if (myCoinResources.additionalBalance.gt(0)) {
    str +=
      formatCurrencyUnit(
        unit,
        myCoinResources.additionalBalance,
        formatConfig
      ) + " additional. ";
  }
 
  if (myCoinResources.nonce) {
    str += "\nonce : " + myCoinResources.nonce;
  }
 
  return str;
}
 
function formatOperationSpecifics(op: Operation, unit: ?Unit): string {
  const { additionalField } = op.extra;
 
  let str = " ";
 
  const formatConfig = {
    disableRounding: true,
    alwaysShowSign: false,
    showCode: true,
  };
 
  str +=
    additionalField && !additionalField.isNaN()
      ? `\n    additionalField: ${
          unit
            ? formatCurrencyUnit(unit, additionalField, formatConfig)
            : additionalField
        }`
      : "";
 
  return str;
}
 
export function fromOperationExtraRaw(extra: ?Object) {
  if (extra && extra.additionalField) {
    extra = {
      ...extra,
      additionalField: BigNumber(extra.additionalField),
    };
  }
  return extra;
}
 
export function toOperationExtraRaw(extra: ?Object) {
  if (extra && extra.additionalField) {
    extra = {
      ...extra,
      additionalField: extra.additionalField.toString(),
    };
  }
  return extra;
}
 
export default {
  formatAccountSpecifics,
  formatOperationSpecifics,
  fromOperationExtraRaw,
  toOperationExtraRaw,
};

import type { Account } from "@ledgerhq/types-live";
import { getAccountUnit } from "@ledgerhq/coin-framework/account/index";
import { formatCurrencyUnit } from "@ledgerhq/coin-framework/currencies";
import {
  fromTransactionCommonRaw,
  toTransactionCommonRaw,
} from "@ledgerhq/coin-framework/transaction/common";
import { BigNumber } from "bignumber.js";
import type { Transaction, TransactionRaw } from "./types";
 
export const formatTransaction = (
  { mode, amount, recipient, useAllAmount }: Transaction,
  account: Account
): string =>
  `
${mode.toUpperCase()} ${
    useAllAmount
      ? "MAX"
      : amount.isZero()
      ? ""
      : " " +
        formatCurrencyUnit(getAccountUnit(account), amount, {
          showCode: true,
          disableRounding: true,
        })
  }${recipient ? `\nTO ${recipient}` : ""}`;
 
export const fromTransactionRaw = (tr: TransactionRaw): Transaction => {
  const common = fromTransactionCommonRaw(tr);
  return {
    ...common,
    family: tr.family,
    mode: tr.mode,
    fees: tr.fees ? BigNumber(tr.fees) : null,
  };
};
 
export const toTransactionRaw = (t: Transaction): TransactionRaw => {
  const common = toTransactionCommonRaw(t);
  return {
    ...common,
    family: t.family,
    mode: t.mode,
    fees: t.fees?.toString() || null,
  };
};
 
export default { formatTransaction, fromTransactionRaw, toTransactionRaw };

./libs/coin-modules/coin-mycoin/src
└── api
  ├── index.ts
  ├── sdk.ts
  └── sdk.types.ts

export {
  getAccount,
  getOperations,
  getPreloadedData, // adjust with needs of preloaded data
  getFees,
  submit,
  disconnect, // if using persisting connection
} from "./sdk";

import MyCoinApi from "my-coin-sdk";
import type { MyCoinTransaction } from "my-coin-sdk";
import { BigNumber } from "bignumber.js";
 
import { getEnv } from "@ledgerhq/live-env";
import { encodeOperationId } from "@ledgerhq/coin-framework/operation";
 
type AsyncApiFunction = (api: typeof MyCoinApi) => Promise<any>;
 
const MYCOIN_API_ENDPOINT = () => getEnv("MYCOIN_API_ENDPOINT");
 
let api = null;
 
/**
 * Connects to MyCoin Api
 */
async function withApi(execute: AsyncApiFunction): Promise<any> {
  // If client is instanciated already, ensure it is connected & ready
  if (api) {
    try {
      await api.isReady;
    } catch (err) {
      api = null;
    }
  }
 
  if (!api) {
    api = new MyCoinApi(MYCOIN_API_ENDPOINT);
    api.connect();
    api.onClose(() => {
      api = null;
    });
    await api.isReady;
  }
 
  try {
    const res = await execute(api);
 
    return res;
  } catch {
    // Handle Error or Retry
    await disconnect();
  }
}
 
/**
 * Disconnects MyCoin Api
 */
export const disconnect = async () => {
  if (api) {
    const disconnecting = api;
    api = null;
    await disconnecting.close();
  }
};
 
/**
 * Get account balances and nonce
 */
export const getAccount = async (addr: string) =>
  withApi(async (api) => {
    const [balance, nonce, blockHeight] = await Promise.all([
      api.getBalance(addr),
      api.getTransactionCount(addr),
      api.getBlockNumber(),
    ]);
 
    return {
      blockHeight,
      balance: BigNumber(balance),
      additionalBalance: BigNumber(additionalBalance),
      nonce,
    };
  });
 
/**
 * Returns true if account is the signer
 */
function isSender(transaction: MyCoinTransaction, addr: string): boolean {
  return transaction.sender === addr;
}
 
/**
 * Map transaction to an Operation Type
 */
function getOperationType(
  transaction: MyCoinTransaction,
  addr: string
): OperationType {
  return isSender(transaction, addr) ? "OUT" : "IN";
}
 
/**
 * Map transaction to a correct Operation Value (affecting account balance)
 */
function getOperationValue(
  transaction: MyCoinTransaction,
  addr: string
): BigNumber {
  return isSender(transaction, addr)
    ? BigNumber(transaction.value).plus(transaction.fees)
    : BigNumber(transaction.value);
}
 
/**
 * Extract extra from transaction if any
 */
function getOperationExtra(transaction: MyCoinTransaction): Object {
  return {
    additionalField: transaction.additionalField,
  };
}
 
/**
 * Map the MyCoin history transaction to a Ledger Live Operation
 */
function transactionToOperation(
  accountId: string,
  addr: string,
  transaction: MyCoinTransaction
): Operation {
  const type = getOperationType(transaction, addr);
 
  return {
    id: encodeOperationId(accountId, transaction.hash, type),
    accountId,
    fee: BigNumber(transaction.fees || 0),
    value: getOperationValue(transaction, addr),
    type,
    // This is where you retrieve the hash of the transaction
    hash: transaction.hash,
    blockHash: null,
    blockHeight: transaction.blockNumber,
    date: new Date(transaction.timestamp),
    extra: getOperationExtra(transaction),
    senders: [transaction.sender],
    recipients: transaction.recipient ? [transaction.recipient] : [],
    transactionSequenceNumber: isSender(transaction, addr)
      ? transaction.nonce
      : undefined,
    hasFailed: !transaction.success,
  };
}
 
/**
 * Fetch operation list
 */
export const getOperations = async (
  accountId: string,
  addr: string,
  startAt: number
): Promise<Operation[]> =>
  withApi(async (api) => {
    const rawTransactions = await api.getHistory(addr, startAt);
 
    return rawTransactions.map((transaction) =>
      transactionToOperation(accountId, addr, transaction)
    );
  });

import type { Account } from "@ledgerhq/types-live";
import type { GetAccountShape } from "@ledgerhq/coin-framework/bridge/jsHelpers";
import { makeSync, makeScanAccounts, mergeOps } from "@ledgerhq/coin-framework/bridge/jsHelpers";
 
import {
  encodeAccountId
} from "../../account";
 
import { getAccount, getOperations } from "./api";
 
const getAccountShape: GetAccountShape = async (info) => {
  const { id, address, initialAccount } = info;
  const oldOperations = initialAccount?.operations || [];
 
  // Needed for incremental synchronisation
  const startAt = oldOperations.length
    ? (oldOperations[0].blockHeight || 0) + 1
    : 0;
 
  const accountId = encodeAccountId({
    type: "js",
    version: "2",
    currencyId: currency.id,
    xpubOrAddress: address,
    derivationMode,
  });
 
  // get the current account balance state depending your api implementation
  const { blockHeight, balance, additionalBalance, nonce } = await getAccount(
    address
  );
 
  // Merge new operations with the previously synced ones
  const newOperations = await getOperations(id, address, startAt);
  const operations = mergeOps(oldOperations, newOperations);
 
  const shape = {
    id,
    balance,
    spendableBalance: balance,
    operationsCount: operations.length,
    blockHeight,
    myCoinResources: {
      nonce,
      additionalBalance,
    },
  };
 
  return { ...shape, operations };
};
 
const postSync = (initial: Account, parent: Account) => parent;
 
export const scanAccounts = makeScanAccounts({ getAccountShape });
export const sync = makeSync({ getAccountShape, postSync });
 

import { BigNumber } from "bignumber.js";
import {
  NotEnoughBalance,
  RecipientRequired,
  InvalidAddress,
  FeeTooHigh,
} from "@ledgerhq/errors";
import type { Transaction } from "../types";
import type { AccountBridge, CurrencyBridge } from "@ledgerhq/types-live";
import {
  scanAccounts,
  signOperation,
  broadcast,
  sync,
  isInvalidRecipient,
} from "../../../bridge/mockHelpers";
import { getMainAccount } from "@ledgerhq/coin-framework/account/index";
import { makeAccountBridgeReceive } from "../../../bridge/mockHelpers";
 
const receive = makeAccountBridgeReceive();
 
const createTransaction = (): Transaction => ({
  family: "mycoin",
  mode: "send",
  amount: BigNumber(0),
  recipient: "",
  useAllAmount: false,
  fees: null,
});
 
const updateTransaction = (t, patch) => ({ ...t, ...patch });
 
const prepareTransaction = async (a, t) => t;
 
const estimateMaxSpendable = ({ account, parentAccount, transaction }) => {
  const mainAccount = getMainAccount(account, parentAccount);
  const estimatedFees = transaction?.fees || BigNumber(5000);
  return Promise.resolve(
    BigNumber.max(0, mainAccount.balance.minus(estimatedFees))
  );
};
 
const getTransactionStatus = (account, t) => {
  const errors = {};
  const warnings = {};
  const useAllAmount = !!t.useAllAmount;
 
  const estimatedFees = BigNumber(5000);
 
  const totalSpent = useAllAmount
    ? account.balance
    : BigNumber(t.amount).plus(estimatedFees);
 
  const amount = useAllAmount
    ? account.balance.minus(estimatedFees)
    : BigNumber(t.amount);
 
  if (amount.gt(0) && estimatedFees.times(10).gt(amount)) {
    warnings.amount = new FeeTooHigh();
  }
 
  if (totalSpent.gt(account.balance)) {
    errors.amount = new NotEnoughBalance();
  }
 
  if (!t.recipient) {
    errors.recipient = new RecipientRequired();
  } else if (isInvalidRecipient(t.recipient)) {
    errors.recipient = new InvalidAddress();
  }
 
  return Promise.resolve({
    errors,
    warnings,
    estimatedFees,
    amount,
    totalSpent,
  });
};
 
const accountBridge: AccountBridge<Transaction> = {
  estimateMaxSpendable,
  createTransaction,
  updateTransaction,
  getTransactionStatus,
  prepareTransaction,
  sync,
  receive,
  signOperation,
  broadcast,
};
 
const currencyBridge: CurrencyBridge = {
  scanAccounts,
  preload: async () => {},
  hydrate: () => {},
};
 
export default { currencyBridge, accountBridge };

import type { AccountBridge, CurrencyBridge } from "@ledgerhq/types-live";
import type { Transaction } from "../types";
import { makeAccountBridgeReceive } from "@ledgerhq/coin-framework/bridge/jsHelpers";
 
import { getPreloadStrategy, preload, hydrate } from "../preload";
 
import { sync, scanAccounts } from "../js-synchronisation";
 
const receive = makeAccountBridgeReceive();
 
const currencyBridge: CurrencyBridge = {
  getPreloadStrategy,
  preload,
  hydrate,
  scanAccounts,
};
 
const createTransaction = () => {
  throw new Error("createTransaction not implemented");
};
 
const prepareTransaction = () => {
  throw new Error("prepareTransaction not implemented");
};
 
const updateTransaction = () => {
  throw new Error("updateTransaction not implemented");
};
 
const getTransactionStatus = () => {
  throw new Error("getTransactionStatus not implemented");
};
 
const estimateMaxSpendable = () => {
  throw new Error("estimateMaxSpendable not implemented");
};
 
const signOperation = () => {
  throw new Error("signOperation not implemented");
};
 
const broadcast = () => {
  throw new Error("broadcast not implemented");
};
 
const accountBridge: AccountBridge<Transaction> = {
  estimateMaxSpendable,
  createTransaction,
  updateTransaction,
  getTransactionStatus,
  prepareTransaction,
  sync,
  receive,
  signOperation,
  broadcast,
};
 
export default { currencyBridge, accountBridge };