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/*
This file is part of GNU Taler
(C) 2021 Taler Systems S.A.
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 { classifyTalerUri, TalerUriType } from "@gnu-taler/taler-util";
import { useEffect, useState } from "preact/hooks";
export function useTalerActionURL(): [string | undefined, (s: boolean) => void] {
const [talerActionUrl, setTalerActionUrl] = useState<string | undefined>(
undefined
);
const [dismissed, setDismissed] = useState(false);
useEffect(() => {
async function check(): Promise<void> {
const talerUri = await findTalerUriInActiveTab();
if (talerUri) {
const actionUrl = actionForTalerUri(talerUri);
setTalerActionUrl(actionUrl);
}
}
check();
}, []);
const url = dismissed ? undefined : talerActionUrl;
return [url, setDismissed];
}
function actionForTalerUri(talerUri: string): string | undefined {
const uriType = classifyTalerUri(talerUri);
switch (uriType) {
case TalerUriType.TalerWithdraw:
return makeExtensionUrlWithParams("static/wallet.html#/withdraw", {
talerWithdrawUri: talerUri,
});
case TalerUriType.TalerPay:
return makeExtensionUrlWithParams("static/wallet.html#/pay", {
talerPayUri: talerUri,
});
case TalerUriType.TalerTip:
return makeExtensionUrlWithParams("static/wallet.html#/tip", {
talerTipUri: talerUri,
});
case TalerUriType.TalerRefund:
return makeExtensionUrlWithParams("static/wallet.html#/refund", {
talerRefundUri: talerUri,
});
case TalerUriType.TalerNotifyReserve:
// FIXME: implement
break;
default:
console.warn(
"Response with HTTP 402 has Taler header, but header value is not a taler:// URI.",
);
break;
}
return undefined;
}
function makeExtensionUrlWithParams(
url: string,
params?: { [name: string]: string | undefined },
): string {
const innerUrl = new URL(chrome.extension.getURL("/" + url));
if (params) {
const hParams = Object.keys(params).map(k => `${k}=${params[k]}`).join('&')
innerUrl.hash = innerUrl.hash + '?' + hParams
}
return innerUrl.href;
}
async function findTalerUriInActiveTab(): Promise<string | undefined> {
return new Promise((resolve, reject) => {
chrome.tabs.executeScript(
{
code: `
(() => {
let x = document.querySelector("a[href^='taler://'") || document.querySelector("a[href^='taler+http://'");
return x ? x.href.toString() : null;
})();
`,
allFrames: false,
},
(result) => {
if (chrome.runtime.lastError) {
console.error(chrome.runtime.lastError);
resolve(undefined);
return;
}
console.log("got result", result);
resolve(result[0]);
},
);
});
}
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