58 lines
2.2 KiB
TypeScript
58 lines
2.2 KiB
TypeScript
/*
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Copyright 2018, 2020 New Vector Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import type { IConfigOptions } from "matrix-react-sdk/src/IConfigOptions";
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// Load the config file. First try to load up a domain-specific config of the
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// form "config.$domain.json" and if that fails, fall back to config.json.
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export async function getVectorConfig(relativeLocation = ""): Promise<IConfigOptions> {
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if (relativeLocation !== "" && !relativeLocation.endsWith("/")) relativeLocation += "/";
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const specificConfigPromise = getConfig(`${relativeLocation}config.${document.domain}.json`);
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const generalConfigPromise = getConfig(relativeLocation + "config.json");
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try {
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const configJson = await specificConfigPromise;
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// 404s succeed with an empty json config, so check that there are keys
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if (Object.keys(configJson).length === 0) {
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throw new Error(); // throw to enter the catch
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}
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return configJson;
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} catch (e) {
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return generalConfigPromise;
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}
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}
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async function getConfig(configJsonFilename: string): Promise<IConfigOptions> {
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const url = new URL(configJsonFilename, window.location.href);
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url.searchParams.set("cachebuster", Date.now().toString());
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const res = await fetch(url, {
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cache: "no-cache",
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method: "GET",
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});
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if (res.status === 404 || res.status === 0) {
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// Lack of a config isn't an error, we should just use the defaults.
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// Also treat a blank config as no config, assuming the status code is 0, because we don't get 404s from file:
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// URIs so this is the only way we can not fail if the file doesn't exist when loading from a file:// URI.
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return {} as IConfigOptions;
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}
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if (res.ok) {
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return res.json();
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}
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}
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