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/*
This file is part of TALER
(C) 2015-2016 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, If not, see <http://www.gnu.org/licenses/>
*/
import {amountToPretty, canonicalizeBaseUrl} from "../lib/wallet/helpers";
import {AmountJson, CreateReserveResponse} from "../lib/wallet/types";
"use strict";
declare var m: any;
/**
* Execute something after a delay, with the possibility
* to reset the delay.
*/
class DelayTimer {
ms: number;
f;
timerId: number = null;
constructor(ms: number, f) {
this.f = f;
this.ms = ms;
}
bump() {
if (this.timerId !== null) {
window.clearTimeout(this.timerId);
}
const handler = () => {
this.f();
};
this.timerId = window.setTimeout(handler, this.ms);
}
}
class Controller {
url = null;
errorString = null;
isValidMint = false;
private timer: DelayTimer;
private request: XMLHttpRequest;
constructor() {
this.update();
this.timer = new DelayTimer(800, () => this.update());
}
update() {
const doUpdate = () => {
if (!this.url) {
this.errorString = i18n`Please enter a URL`;
return;
}
this.errorString = null;
let parsedUrl = URI(this.url);
if (parsedUrl.is("relative")) {
this.errorString = i18n`The URL you've entered is not valid (must be absolute)`;
return;
}
const keysUrl = URI("/keys").absoluteTo(canonicalizeBaseUrl(this.url));
console.log(`requesting keys from '${keysUrl}'`);
this.request = new XMLHttpRequest();
this.request.onreadystatechange = () => {
if (this.request.readyState == XMLHttpRequest.DONE) {
switch (this.request.status) {
case 200:
this.isValidMint = true;
break;
case 0:
this.errorString = `unknown request error`;
break;
default:
this.errorString = `request failed with status ${this.request.status}`;
break;
}
m.redraw();
}
};
this.request.open("get", keysUrl.href());
this.request.send();
};
doUpdate();
m.redraw();
console.log("got update");
}
reset() {
this.isValidMint = false;
this.errorString = null;
if (this.request) {
this.request.abort();
this.request = null;
}
m.redraw();
}
confirmReserve(mint: string, amount: AmountJson, callback_url: string) {
const d = {mint, amount};
const cb = (rawResp) => {
if (!rawResp) {
throw Error("empty response");
}
if (!rawResp.error) {
const resp = CreateReserveResponse.checked(rawResp);
let q = {
mint: resp.mint,
reserve_pub: resp.reservePub,
amount_value: amount.value,
amount_fraction: amount.fraction,
amount_currency: amount.currency,
};
let url = URI(callback_url).addQuery(q);
if (!url.is("absolute")) {
throw Error("callback url is not absolute");
}
console.log("going to", url.href());
document.location.href = url.href();
} else {
this.reset();
this.errorString = (
`Oops, something went wrong.` +
`The wallet responded with error status (${rawResp.error}).`);
}
};
chrome.runtime.sendMessage({type: 'create-reserve', detail: d}, cb);
}
onUrlChanged(url: string) {
this.reset();
this.url = url;
this.timer.bump();
}
}
export function main() {
const url = URI(document.location.href);
const query: any = URI.parseQuery(url.query());
const amount = AmountJson.checked(JSON.parse(query.amount));
const callback_url = query.callback_url;
var MintSelection = {
controller: () => new Controller(),
view(ctrl: Controller) {
let controls = [];
let mx = (...args) => controls.push(m(...args));
mx("p",
i18n`The bank wants to create a reserve over ${amountToPretty(
amount)}.`);
mx("input.url",
{
type: "text",
spellcheck: false,
oninput: m.withAttr("value", ctrl.onUrlChanged.bind(ctrl)),
});
if (ctrl.isValidMint) {
mx("button", {
onclick: () => ctrl.confirmReserve(ctrl.url,
amount,
callback_url)
},
"Confirm mint selection");
}
if (ctrl.errorString) {
mx("p", ctrl.errorString);
}
return m("div", controls);
}
};
m.mount(document.getElementById("mint-selection"), MintSelection);
}
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