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import { canonicalizeBaseUrl } from "@gnu-taler/taler-util";
import {
HttpResponseOk,
RequestOptions,
useApiContext,
} from "@gnu-taler/web-util/browser";
import { useCallback } from "preact/hooks";
import { uiSettings } from "../settings.js";
interface useBackendType {
request: <T>(
path: string,
options?: RequestOptions,
) => Promise<HttpResponseOk<T>>;
fetcher: <T>(args: [string, string]) => Promise<HttpResponseOk<T>>;
paginatedFetcher: <T>(
args: [string, number, number, string],
) => Promise<HttpResponseOk<T>>;
}
export function usePublicBackend(): useBackendType {
const { request: requestHandler } = useApiContext();
const baseUrl = getInitialBackendBaseURL();
const request = useCallback(
function requestImpl<T>(
path: string,
options: RequestOptions = {},
): Promise<HttpResponseOk<T>> {
return requestHandler<T>(baseUrl, path, options);
},
[baseUrl],
);
const fetcher = useCallback(
function fetcherImpl<T>([endpoint, talerAmlOfficerSignature]: [string, string]): Promise<HttpResponseOk<T>> {
return requestHandler<T>(baseUrl, endpoint, {
talerAmlOfficerSignature
});
},
[baseUrl],
);
const paginatedFetcher = useCallback(
function fetcherImpl<T>([endpoint, page, size, talerAmlOfficerSignature]: [
string,
number,
number,
string,
]): Promise<HttpResponseOk<T>> {
return requestHandler<T>(baseUrl, endpoint, {
params: { page: page || 1, size },
talerAmlOfficerSignature,
});
},
[baseUrl],
);
return {
request,
fetcher,
paginatedFetcher,
};
}
export function getInitialBackendBaseURL(): string {
const overrideUrl =
typeof localStorage !== "undefined"
? localStorage.getItem("exchange-base-url")
: undefined;
let result: string;
if (!overrideUrl) {
//normal path
if (!uiSettings.backendBaseURL) {
console.error(
"ERROR: backendBaseURL was overridden by a setting file and missing. Setting value to 'window.origin'",
);
result = typeof (window as any) !== "undefined" ? window.origin : "localhost"
} else {
result = uiSettings.backendBaseURL;
}
} else {
// testing/development path
result = overrideUrl
}
try {
return canonicalizeBaseUrl(result)
} catch (e) {
//fall back
return canonicalizeBaseUrl(window.origin)
}
}
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