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/*
This file is part of TALER
(C) 2015 GNUnet e.V.
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.
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
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
* Implementation of the shop API, either invoked via HTTP or
* via a JS DOM Events.
*
* @author Florian Dold
*/
function subst(url: string, H_contract: string) {
url = url.replace("${H_contract}", H_contract);
url = url.replace("${$}", "$");
return url;
}
export function createReserve(amount: any, callback_url: any, wt_types: any) {
let params = {
amount: JSON.stringify(amount),
callback_url: URI(callback_url)
.absoluteTo(document.location.href),
bank_url: document.location.href,
wt_types: JSON.stringify(wt_types),
};
let uri = URI(chrome.extension.getURL("pages/confirm-create-reserve.html"));
document.location.href = uri.query(params).href();
}
export function confirmContract(contract_wrapper: any, replace_navigation: any) {
if (contract_wrapper) {
console.error("contract wrapper missing");
return;
}
const offer = contract_wrapper;
if (!offer.contract) {
console.error("contract field missing");
return;
}
const msg = {
type: "check-repurchase",
detail: {
contract: offer.contract
},
};
chrome.runtime.sendMessage(msg, (resp) => {
if (resp.error) {
console.error("wallet backend error", resp);
return;
}
if (resp.isRepurchase) {
console.log("doing repurchase");
console.assert(resp.existingFulfillmentUrl);
console.assert(resp.existingContractHash);
window.location.href = subst(resp.existingFulfillmentUrl,
resp.existingContractHash);
} else {
const uri = URI(chrome.extension.getURL("pages/confirm-contract.html"));
const params = {
offer: JSON.stringify(offer),
merchantPageUrl: document.location.href,
};
const target = uri.query(params).href();
if (replace_navigation === true) {
document.location.replace(target);
} else {
document.location.href = target;
}
}
});
}
/**
* Fetch a payment (coin deposit permissions) for a given contract.
* If we don't have the payment for the contract, redirect to
* offering url instead.
*/
export function fetchPayment(H_contract: any, offering_url: any) {
const msg = {
type: "fetch-payment",
detail: {H_contract},
};
chrome.runtime.sendMessage(msg, (resp) => {
console.log("got resp");
console.dir(resp);
if (!resp.success) {
if (offering_url) {
console.log("offering url", offering_url);
window.location.href = offering_url;
} else {
console.error("fetch-payment failed");
}
return;
}
let contract = resp.contract;
if (!contract) {
throw Error("contract missing");
}
// We have the details for then payment, the merchant page
// is responsible to give it to the merchant.
let evt = new CustomEvent("taler-notify-payment", {
detail: {
H_contract: H_contract,
contract: resp.contract,
payment: resp.payReq,
}
});
document.dispatchEvent(evt);
});
}
/**
* Offer a contract to the wallet after
* downloading it from the given URL.
*/
function offerContractFrom(url: string) {
var contract_request = new XMLHttpRequest();
console.log("downloading contract from '" + url + "'");
contract_request.open("GET", url, true);
contract_request.onload = function (e) {
if (contract_request.readyState == 4) {
if (contract_request.status == 200) {
console.log("response text:",
contract_request.responseText);
var contract_wrapper = JSON.parse(contract_request.responseText);
if (!contract_wrapper) {
console.error("response text was invalid json");
alert("Failure to download contract (invalid json)");
return;
}
confirmContract(contract_wrapper, true);
} else {
alert("Failure to download contract from merchant " +
"(" + contract_request.status + "):\n" +
contract_request.responseText);
}
}
};
contract_request.onerror = function (e) {
alert("Failure requesting the contract:\n"
+ contract_request.statusText);
};
contract_request.send();
}
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