misskey/packages/frontend-shared/js/media-proxy.ts

64 lines
2.0 KiB
TypeScript

/*
* SPDX-FileCopyrightText: syuilo and misskey-project
* SPDX-License-Identifier: AGPL-3.0-only
*/
import * as Misskey from 'misskey-js';
import { query } from './url.js';
export class MediaProxy {
private serverMetadata: Misskey.entities.MetaDetailed;
private url: string;
constructor(serverMetadata: Misskey.entities.MetaDetailed, url: string) {
this.serverMetadata = serverMetadata;
this.url = url;
}
public getProxiedImageUrl(imageUrl: string, type?: 'preview' | 'emoji' | 'avatar', mustOrigin = false, noFallback = false): string {
const localProxy = `${this.url}/proxy`;
let _imageUrl = imageUrl;
if (imageUrl.startsWith(this.serverMetadata.mediaProxy + '/') || imageUrl.startsWith('/proxy/') || imageUrl.startsWith(localProxy + '/')) {
// もう既にproxyっぽそうだったらurlを取り出す
_imageUrl = (new URL(imageUrl)).searchParams.get('url') ?? imageUrl;
}
return `${mustOrigin ? localProxy : this.serverMetadata.mediaProxy}/${
type === 'preview' ? 'preview.webp'
: 'image.webp'
}?${query({
url: _imageUrl,
...(!noFallback ? { 'fallback': '1' } : {}),
...(type ? { [type]: '1' } : {}),
...(mustOrigin ? { origin: '1' } : {}),
})}`;
}
public getProxiedImageUrlNullable(imageUrl: string | null | undefined, type?: 'preview'): string | null {
if (imageUrl == null) return null;
return this.getProxiedImageUrl(imageUrl, type);
}
public getStaticImageUrl(baseUrl: string): string {
const u = baseUrl.startsWith('http') ? new URL(baseUrl) : new URL(baseUrl, this.url);
if (u.href.startsWith(`${this.url}/emoji/`)) {
// もう既にemojiっぽそうだったらsearchParams付けるだけ
u.searchParams.set('static', '1');
return u.href;
}
if (u.href.startsWith(this.serverMetadata.mediaProxy + '/')) {
// もう既にproxyっぽそうだったらsearchParams付けるだけ
u.searchParams.set('static', '1');
return u.href;
}
return `${this.serverMetadata.mediaProxy}/static.webp?${query({
url: u.href,
static: '1',
})}`;
}
}