149 lines
4.4 KiB
TypeScript
149 lines
4.4 KiB
TypeScript
import type { RichContent } from "../../model/interfaces.ts";
|
|
import type { RichContentProvider } from "../rich-content-service.ts";
|
|
import { extractOgTag, fetchWithTimeout } from "../rich-content-service.ts";
|
|
|
|
function extractVideoId(url: string): string | null {
|
|
try {
|
|
const u = new URL(url);
|
|
if (u.hostname === "youtu.be") {
|
|
return u.pathname.slice(1).split("/")[0] || null;
|
|
}
|
|
if (u.hostname === "youtube.com" || u.hostname === "www.youtube.com") {
|
|
if (u.pathname === "/watch" || u.pathname.startsWith("/watch?")) {
|
|
return u.searchParams.get("v");
|
|
}
|
|
if (
|
|
u.pathname.startsWith("/embed/") || u.pathname.startsWith("/shorts/")
|
|
) {
|
|
return u.pathname.split("/")[2] || null;
|
|
}
|
|
}
|
|
} catch {
|
|
// invalid URL
|
|
}
|
|
return null;
|
|
}
|
|
|
|
function extractPlaylistId(url: string): string | null {
|
|
try {
|
|
return new URL(url).searchParams.get("list");
|
|
} catch {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
/** Matches /channel/UC…, /@handle, /c/name, /user/name */
|
|
function extractChannelPath(url: string): string | null {
|
|
try {
|
|
const u = new URL(url);
|
|
if (u.hostname === "youtube.com" || u.hostname === "www.youtube.com") {
|
|
if (
|
|
u.pathname.startsWith("/channel/") ||
|
|
u.pathname.startsWith("/@") ||
|
|
u.pathname.startsWith("/c/") ||
|
|
u.pathname.startsWith("/user/")
|
|
) {
|
|
return u.pathname;
|
|
}
|
|
}
|
|
} catch {
|
|
// invalid URL
|
|
}
|
|
return null;
|
|
}
|
|
|
|
async function fetchOEmbed(
|
|
url: string,
|
|
): Promise<{ title?: string; thumbnailUrl?: string }> {
|
|
try {
|
|
const oembedUrl = `https://www.youtube.com/oembed?url=${
|
|
encodeURIComponent(url)
|
|
}&format=json`;
|
|
const res = await fetchWithTimeout(oembedUrl);
|
|
if (res.ok) {
|
|
const data = await res.json() as {
|
|
title?: string;
|
|
thumbnail_url?: string;
|
|
};
|
|
return { title: data.title, thumbnailUrl: data.thumbnail_url };
|
|
}
|
|
} catch {
|
|
// oembed failed — carry on
|
|
}
|
|
return {};
|
|
}
|
|
|
|
export const youtubeProvider: RichContentProvider = {
|
|
name: "youtube",
|
|
|
|
matches(url: string): boolean {
|
|
return (
|
|
extractVideoId(url) !== null ||
|
|
extractPlaylistId(url) !== null ||
|
|
extractChannelPath(url) !== null
|
|
);
|
|
},
|
|
|
|
async fetch(url: string): Promise<RichContent> {
|
|
const videoId = extractVideoId(url);
|
|
const listId = extractPlaylistId(url);
|
|
const channelPath = extractChannelPath(url);
|
|
|
|
// ── Channel ───────────────────────────────────────────────────────────────
|
|
if (channelPath && !videoId) {
|
|
// oEmbed doesn't support channel URLs — scrape og:image from the page instead
|
|
let title: string | undefined;
|
|
let thumbnailUrl: string | undefined;
|
|
try {
|
|
const res = await fetchWithTimeout(url);
|
|
if (res.ok) {
|
|
const html = await res.text();
|
|
title = extractOgTag(html, "title");
|
|
thumbnailUrl = extractOgTag(html, "image");
|
|
}
|
|
} catch {
|
|
// scrape failed — carry on with undefined values
|
|
}
|
|
return {
|
|
type: "youtube",
|
|
siteName: "YouTube",
|
|
url,
|
|
title,
|
|
thumbnailUrl,
|
|
// channels are not embeddable as a player
|
|
};
|
|
}
|
|
|
|
// ── Playlist (no specific video) ──────────────────────────────────────────
|
|
if (listId && !videoId) {
|
|
const { title, thumbnailUrl } = await fetchOEmbed(url);
|
|
return {
|
|
type: "youtube",
|
|
siteName: "YouTube",
|
|
url,
|
|
title,
|
|
thumbnailUrl,
|
|
embedUrl:
|
|
`https://www.youtube.com/embed/videoseries?list=${listId}&rel=0`,
|
|
};
|
|
}
|
|
|
|
// ── Video (with optional playlist context) ────────────────────────────────
|
|
const thumbnailUrl = `https://img.youtube.com/vi/${videoId}/hqdefault.jpg`;
|
|
const { title } = await fetchOEmbed(url);
|
|
|
|
const embedParams = new URLSearchParams({ rel: "0" });
|
|
if (listId) embedParams.set("list", listId);
|
|
|
|
return {
|
|
type: "youtube",
|
|
siteName: "YouTube",
|
|
url,
|
|
videoId: videoId!,
|
|
title,
|
|
thumbnailUrl,
|
|
embedUrl: `https://www.youtube.com/embed/${videoId}?${embedParams}`,
|
|
};
|
|
},
|
|
};
|