73 lines
2.1 KiB
TypeScript
73 lines
2.1 KiB
TypeScript
import { canonicalizeBaseUrl } from "@gnu-taler/taler-util";
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/**
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* Validate (the number part of) an amount. If needed,
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* replace comma with a dot. Returns 'false' whenever
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* the input is invalid, the valid amount otherwise.
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*/
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export function validateAmount(maybeAmount: string | undefined): string | undefined {
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const amountRegex = "^[0-9]+(.[0-9]+)?$";
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if (!maybeAmount) {
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console.log(`Entered amount (${maybeAmount}) mismatched <input> pattern.`);
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return;
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}
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if (typeof maybeAmount !== "undefined" || maybeAmount !== "") {
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console.log(`Maybe valid amount: ${maybeAmount}`);
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// tolerating comma instead of point.
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const re = RegExp(amountRegex);
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if (!re.test(maybeAmount)) {
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console.log(`Not using invalid amount '${maybeAmount}'.`);
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return;
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}
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}
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return maybeAmount;
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}
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/**
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* Extract IBAN from a Payto URI.
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*/
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export function getIbanFromPayto(url: string): string {
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const pathSplit = new URL(url).pathname.split("/");
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let lastIndex = pathSplit.length - 1;
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// Happens if the path ends with "/".
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if (pathSplit[lastIndex] === "") lastIndex--;
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const iban = pathSplit[lastIndex];
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return iban;
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}
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const maybeRootPath = "https://bank.demo.taler.net/demobanks/default/";
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export function getBankBackendBaseUrl(): string {
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const overrideUrl = localStorage.getItem("bank-base-url");
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if (overrideUrl) {
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console.log(
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`using bank base URL ${overrideUrl} (override via bank-base-url localStorage)`,
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);
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} else {
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console.log(`using bank base URL (${maybeRootPath})`);
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}
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return canonicalizeBaseUrl(overrideUrl ? overrideUrl : maybeRootPath)
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}
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export function undefinedIfEmpty<T extends object>(obj: T): T | undefined {
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return Object.keys(obj).some((k) => (obj as any)[k] !== undefined)
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? obj
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: undefined;
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}
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/**
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* Craft headers with Authorization and Content-Type.
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*/
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export function prepareHeaders(username?: string, password?: string): Headers {
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const headers = new Headers();
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if (username && password) {
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headers.append(
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"Authorization",
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`Basic ${window.btoa(`${username}:${password}`)}`,
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);
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}
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headers.append("Content-Type", "application/json");
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return headers;
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}
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