wallet-core/packages/taler-util/src/payto.ts
2021-11-16 14:01:38 -03:00

115 lines
2.7 KiB
TypeScript

/*
This file is part of GNU Taler
(C) 2019 GNUnet e.V.
GNU Taler is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
import { URLSearchParams } from "./url.js";
export type PaytoUri = PaytoUriUnknown | PaytoUriIBAN | PaytoUriTalerBank;
interface PaytoUriGeneric {
targetType: string;
targetPath: string;
params: { [name: string]: string };
}
interface PaytoUriUnknown extends PaytoUriGeneric {
isKnown: false;
}
interface PaytoUriIBAN extends PaytoUriGeneric {
isKnown: true;
targetType: 'iban',
iban: string;
}
interface PaytoUriTalerBank extends PaytoUriGeneric {
isKnown: true;
targetType: 'x-taler-bank',
host: string;
account: string;
}
const paytoPfx = "payto://";
/**
* Add query parameters to a payto URI
*/
export function addPaytoQueryParams(
s: string,
params: { [name: string]: string },
): string {
const [acct, search] = s.slice(paytoPfx.length).split("?");
const searchParams = new URLSearchParams(search || "");
for (const k of Object.keys(params)) {
searchParams.set(k, params[k]);
}
return paytoPfx + acct + "?" + searchParams.toString();
}
export function parsePaytoUri(s: string): PaytoUri | undefined {
if (!s.startsWith(paytoPfx)) {
return undefined;
}
const [acct, search] = s.slice(paytoPfx.length).split("?");
const firstSlashPos = acct.indexOf("/");
if (firstSlashPos === -1) {
return undefined;
}
const targetType = acct.slice(0, firstSlashPos);
const targetPath = acct.slice(firstSlashPos + 1);
const params: { [k: string]: string } = {};
const searchParams = new URLSearchParams(search || "");
searchParams.forEach((v, k) => {
params[v] = k;
});
if (targetType === 'x-taler-bank') {
const parts = targetPath.split('/')
const host = parts[0]
const account = parts[1]
return {
targetPath,
targetType,
params,
isKnown: true,
host, account,
};
}
if (targetType === 'iban') {
return {
isKnown: true,
targetPath,
targetType,
params,
iban: targetPath
};
}
return {
targetPath,
targetType,
params,
isKnown: false
};
}