69 lines
2.4 KiB
TypeScript
69 lines
2.4 KiB
TypeScript
/*
|
|
* Copyright (C) 2026 Fluxer Contributors
|
|
*
|
|
* This file is part of Fluxer.
|
|
*
|
|
* Fluxer is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* Fluxer 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 Affero General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Affero General Public License
|
|
* along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
import {buildExternalMediaProxyPath} from '@fluxer/media_proxy_utils/src/ExternalMediaProxyPathCodec';
|
|
import {createMediaProxySigner, type IMediaProxySigner} from '@fluxer/media_proxy_utils/src/MediaProxySigner';
|
|
|
|
export interface ExternalMediaProxyUrlBuilderOptions {
|
|
mediaProxyEndpoint: string;
|
|
mediaProxySecretKey: string;
|
|
}
|
|
|
|
export interface IExternalMediaProxyUrlBuilder {
|
|
buildExternalMediaProxyUrl(inputUrl: string): string;
|
|
}
|
|
|
|
interface InternalExternalMediaProxyUrlBuilderOptions {
|
|
mediaProxyEndpoint: string;
|
|
mediaProxySigner: IMediaProxySigner;
|
|
}
|
|
|
|
function normalizeMediaProxyEndpoint(mediaProxyEndpoint: string): string {
|
|
return mediaProxyEndpoint.replace(/\/+$/u, '');
|
|
}
|
|
|
|
class ExternalMediaProxyUrlBuilder implements IExternalMediaProxyUrlBuilder {
|
|
private readonly mediaProxyEndpoint: string;
|
|
private readonly mediaProxySigner: IMediaProxySigner;
|
|
|
|
constructor(options: InternalExternalMediaProxyUrlBuilderOptions) {
|
|
this.mediaProxyEndpoint = options.mediaProxyEndpoint;
|
|
this.mediaProxySigner = options.mediaProxySigner;
|
|
}
|
|
|
|
buildExternalMediaProxyUrl(inputUrl: string): string {
|
|
const proxyUrlPath = buildExternalMediaProxyPath(inputUrl);
|
|
const signature = this.mediaProxySigner.createSignature(proxyUrlPath);
|
|
return `${this.mediaProxyEndpoint}/external/${signature}/${proxyUrlPath}`;
|
|
}
|
|
}
|
|
|
|
export function createExternalMediaProxyUrlBuilder(
|
|
options: ExternalMediaProxyUrlBuilderOptions,
|
|
): IExternalMediaProxyUrlBuilder {
|
|
const mediaProxySigner = createMediaProxySigner({
|
|
mediaProxySecretKey: options.mediaProxySecretKey,
|
|
});
|
|
|
|
return new ExternalMediaProxyUrlBuilder({
|
|
mediaProxyEndpoint: normalizeMediaProxyEndpoint(options.mediaProxyEndpoint),
|
|
mediaProxySigner,
|
|
});
|
|
}
|