/*
This file is part of GNU Taler
(C) 2022-2024 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
*/
import {
CacheEvictor,
LibtoolVersion,
ObservabilityEvent,
ObservableHttpClientLibrary,
TalerAuthenticationHttpClient,
TalerBankConversionCacheEviction,
TalerBankConversionHttpClient,
TalerCoreBankCacheEviction,
TalerCoreBankHttpClient,
TalerCorebankApi,
TalerError
} from "@gnu-taler/taler-util";
import {
ComponentChildren,
FunctionComponent,
VNode,
createContext,
h,
} from "preact";
import { useContext, useEffect, useState } from "preact/hooks";
import { APIClient, ActiviyTracker, BankLib, Suscriber } from "./activity.js";
import { useTranslationContext } from "./translation.js";
import { BrowserFetchHttpLib, ErrorLoading } from "../index.browser.js";
/**
*
* @author Sebastian Javier Marchano (sebasjm)
*/
export type BankContextType = {
url: URL;
config: TalerCorebankApi.Config;
lib: BankLib;
hints: VersionHint[];
onActivity: Suscriber;
cancelRequest: (eventId: string) => void;
};
// @ts-expect-error default value to undefined, should it be another thing?
const BankContext = createContext(undefined);
export const useBankCoreApiContext = (): BankContextType => useContext(BankContext);
enum VersionHint {
NONE,
}
type Evictors = {
conversion?: CacheEvictor;
bank?: CacheEvictor;
}
type ConfigResult =
| undefined
| { type: "ok"; config: T; hints: VersionHint[] }
| { type: "incompatible"; result: T; supported: string }
| { type: "error"; error: TalerError };
export const BankApiProvider = ({
baseUrl,
children,
frameOnError,
evictors = {},
}: {
baseUrl: URL;
children: ComponentChildren;
evictors?: Evictors,
frameOnError: FunctionComponent<{ children: ComponentChildren }>;
}): VNode => {
const [checked, setChecked] = useState>();
const { i18n } = useTranslationContext();
const { getRemoteConfig, VERSION, lib, cancelRequest, onActivity } = buildBankApiClient(baseUrl, evictors);
useEffect(() => {
getRemoteConfig()
.then((config) => {
if (LibtoolVersion.compare(VERSION, config.version)) {
setChecked({ type: "ok", config, hints: [] });
} else {
setChecked({
type: "incompatible",
result: config,
supported: VERSION,
});
}
})
.catch((error: unknown) => {
if (error instanceof TalerError) {
setChecked({ type: "error", error });
}
});
}, []);
if (checked === undefined) {
return h(frameOnError, { children: h("div", {}, "checking compatibility with server...") });
}
if (checked.type === "error") {
return h(frameOnError, {
children: h(ErrorLoading, { error: checked.error, showDetail: true }),
});
}
if (checked.type === "incompatible") {
return h(frameOnError, {
children: h(
"div",
{},
i18n.str`The server version is not supported. Supported version "${checked.supported}", server version "${checked.result.version}"`,
),
});
}
const value: BankContextType = {
url: baseUrl,
config: checked.config,
onActivity: onActivity,
lib,
cancelRequest,
hints: checked.hints,
};
return h(BankContext.Provider, {
value,
children,
});
};
function buildBankApiClient(url: URL, evictors: Evictors,
): APIClient {
const httpFetch = new BrowserFetchHttpLib({
enableThrottling: true,
requireTls: false,
});
const tracker = new ActiviyTracker();
const httpLib = new ObservableHttpClientLibrary(httpFetch, {
observe(ev) {
tracker.notify(ev);
},
});
const bank = new TalerCoreBankHttpClient(
url.href,
httpLib,
evictors.bank,
);
const conversion = new TalerBankConversionHttpClient(
bank.getConversionInfoAPI().href,
httpLib,
evictors.conversion,
);
const auth = (user: string) =>
new TalerAuthenticationHttpClient(
bank.getAuthenticationAPI(user).href,
httpLib,
);
async function getRemoteConfig() {
const resp = await bank.getConfig()
return resp.body
}
return {
getRemoteConfig,
VERSION: bank.PROTOCOL_VERSION,
lib: {
bank, conversion, auth
},
onActivity: tracker.subscribe,
cancelRequest: httpLib.cancelRequest,
};
}
export const BankApiProviderTesting = ({
children,
value,
}: {
value: BankContextType
children: ComponentChildren;
}): VNode => {
return h(BankContext.Provider, {
value,
children,
});
}