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/*
This file is part of GNU Taler
(C) 2022 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/>
*/
/* eslint-disable react-hooks/rules-of-hooks */
import { Amounts, TalerErrorDetail } from "@gnu-taler/taler-util";
import { TalerError } from "@gnu-taler/taler-wallet-core";
import { useState } from "preact/hooks";
import { useAsyncAsHook } from "../../hooks/useAsyncAsHook.js";
import { useSelectedExchange } from "../../hooks/useSelectedExchange.js";
import * as wxApi from "../../wxApi.js";
import { Props, State } from "./index.js";
type RecursiveState<S extends object> = S | (() => RecursiveState<S>);
export function useComponentState(
{ amount: amountStr, onClose, onSuccess }: Props,
api: typeof wxApi,
): RecursiveState<State> {
const amount = Amounts.parseOrThrow(amountStr);
const hook = useAsyncAsHook(api.listExchanges);
if (!hook) {
return {
status: "loading",
error: undefined,
};
}
if (hook.hasError) {
return {
status: "loading-uri",
error: hook,
};
}
const exchangeList = hook.response.exchanges;
return () => {
const [subject, setSubject] = useState("");
const [operationError, setOperationError] = useState<
TalerErrorDetail | undefined
>(undefined);
const selectedExchange = useSelectedExchange({
currency: amount.currency,
defaultExchange: undefined,
list: exchangeList,
});
if (selectedExchange.status !== "ready") {
return selectedExchange;
}
const exchange = selectedExchange.selected;
async function accept(): Promise<void> {
try {
const resp = await api.initiatePeerPullPayment({
amount: Amounts.stringify(amount),
exchangeBaseUrl: exchange.exchangeBaseUrl,
partialContractTerms: {
summary: subject,
},
});
onSuccess(resp.transactionId);
} catch (e) {
if (e instanceof TalerError) {
setOperationError(e.errorDetail);
}
console.error(e);
throw Error("error trying to accept");
}
}
return {
status: "ready",
subject: {
error: !subject ? "cant be empty" : undefined,
value: subject,
onInput: async (e) => setSubject(e),
},
doSelectExchange: selectedExchange.doSelect,
invalid: !subject || Amounts.isZero(amount),
exchangeUrl: exchange.exchangeBaseUrl,
create: {
onClick: accept,
},
cancel: {
onClick: onClose,
},
chosenAmount: amount,
toBeReceived: amount,
error: undefined,
operationError,
};
};
}
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