v4: link previews are read once, in one place, and no longer take an error page, a relative image or a mask icon for the page's — each provider fetched its page and scanned it with regular expressions of its own, the generic one some fifteen times, and Bandcamp and SoundCloud read only OG tags. fetchPage (remote/fetch.ts) now fetches every page, follows redirects to the address it was served from, and refuses an error status, so a 404 or a bot challenge is unreachable rather than a preview titled "Just a moment...", and a refresh no longer overwrites good metadata with it. parsePage (remote/html.ts) reads it in one linear pass with a real attribute reader: unquoted values, a > inside quotes, og: tags under name as well as property, and nothing from comments or scripts. Every URL a page names is resolved against where it was served from, so a relative og:image works; entities are decoded in one pass, &eacute; and &rsquo; included, and one that names no character no longer fails the preview (bandcamp-tralbum.ts shares the decoder). The mask icon is no longer the favicon, JSON-LD prefers the page's node over the site's, tracking pixels and lazy placeholders aren't thumbnails, an og:url with a slug keeps the OG tags, and a <title> loses its site suffix. genericPreview is the base of the Bandcamp, SoundCloud and YouTube channel previews; SoundCloud takes www., m. and on.soundcloud.com short links, embedding the page they lead to, and Bandcamp keeps only its own player. The service tidies every preview: text on one line, titles and descriptions capped, only http(s) images and players. RichContent.type is now RichContentType, and the unused videoId is gone.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
khannurien
2026-10-09 20:46:32 +00:00
parent b4936cccf7
commit 2c3ba6ad11
22 changed files with 1111 additions and 519 deletions

View File

@@ -7,17 +7,20 @@
* @module
*/
/**
* Names the kind of link a {@link RichContent} previews: a site the player
* plays its own way, or `generic` for any other page, this site's included.
*/
export type RichContentType = "youtube" | "bandcamp" | "soundcloud" | "generic";
/**
* Built by a provider of `rich-content-service.ts` when a link is posted or
* previewed, and stored with the dump as JSON. The frontend's
* `RichContentCard` and player read it.
*/
export interface RichContent {
/**
* The provider that read the page: `youtube`, `bandcamp`, `soundcloud` or
* `generic`. The player picks how to play the link by it.
*/
type: string;
/** The player picks how to play the link by it. */
type: RichContentType;
url: string;
siteName?: string;
title?: string;
@@ -32,8 +35,10 @@ export interface RichContent {
faviconUrl?: string;
/** The page's declared brand color, normalized to `#rrggbb`. */
accentColor?: string;
/** Set for a YouTube link only. */
videoId?: string;
/**
* The player a YouTube, Bandcamp or SoundCloud link plays in, framed by the
* frontend.
*/
embedUrl?: string;
}