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Implement Amount debugging using Decimal class

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This commit is contained in:
Simon Warta 2020-01-30 08:43:08 +01:00
parent 55700b2157
commit d52f69afff
1 changed files with 6 additions and 26 deletions
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32
packages/faucet/src/debugging.ts
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@ -1,38 +1,18 @@
import { Account, Amount } from "@iov/bcp";
import { Decimal } from "@iov/encoding";
import { MultiChainSigner } from "@iov/multichain";
import { SendJob } from "./types";
export function amountToNumber(amount: Amount): number {
const { quantity, fractionalDigits } = amount;
if (!quantity.match(/^[0-9]+$/)) {
throw new Error(`quantity must be a number, got ${quantity}`);
}
if (fractionalDigits < 0) {
throw new Error(`invalid fractional digits: ${fractionalDigits}`);
}
// let's remove those leading zeros...
const temp = quantity.replace(/^0+/, "");
// unless we need them to reach a decimal point
const pad = fractionalDigits - temp.length;
const trimmed = pad > 0 ? "0".repeat(pad) + temp : temp;
const cut = trimmed.length - fractionalDigits;
const whole = cut === 0 ? "0" : trimmed.slice(0, cut);
const decimal = fractionalDigits === 0 ? "" : `.${trimmed.slice(cut)}`;
const value = `${whole}${decimal}`;
return Number(value);
}
/** A string representation of a coin in a human-readable format that can change at any time */
export function debugCoin(coin: Amount): string {
return `${amountToNumber(coin)} ${coin.tokenTicker}`;
function debugAmount(amount: Amount): string {
const value = Decimal.fromAtomics(amount.quantity, amount.fractionalDigits).toString();
return `${value} ${amount.tokenTicker}`;
}
/** A string representation of a balance in a human-readable format that can change at any time */
export function debugBalance(data: ReadonlyArray<Amount>): string {
return `[${data.map(debugCoin).join(", ")}]`;
return `[${data.map(debugAmount).join(", ")}]`;
}
/** A string representation of an account in a human-readable format that can change at any time */
@ -53,6 +33,6 @@ export function logAccountsState(accounts: ReadonlyArray<Account>): void {
export function logSendJob(signer: MultiChainSigner, job: SendJob): void {
const from = signer.identityToAddress(job.sender);
const to = job.recipient;
const amount = debugCoin(job.amount);
const amount = debugAmount(job.amount);
console.info(`Sending ${amount} from ${from} to ${to} ...`);
}