WebHooker/server/lib/web/richheader.ts

35 lines
1.4 KiB
TypeScript

import type { H3Event } from "h3";
import { getQuery } from "h3";
function esc(s: string): string {
return String(s)
.replace(/&/g, "&")
.replace(/"/g, """)
.replace(/</g, "&lt;")
.replace(/>/g, "&gt;");
}
/** GET /api/richheader — Open Graph page for Telegram avatar link-preview cards. */
export function handleRichHeader(event: H3Event): string {
const query = getQuery(event);
const title = String(query["title"] ?? "");
const content = String(query["content"] ?? "");
const avatar = String(query["avatar"] ?? "");
return `<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta property="og:type" content="website">
<meta property="og:site_name" content="${esc(title)}">
${content ? `<meta property="og:title" content="${esc(content)}">` : ""}
${avatar ? `<meta property="og:image" content="${esc(avatar)}">` : ""}
</head>
<body style="font-family: system-ui, -apple-system, sans-serif; text-align: center; padding: 40px; max-width: 600px; margin: 0 auto;">
${avatar ? `<img src="${esc(avatar)}" alt="Avatar" style="width: 128px; height: 128px; border-radius: 50%; margin-bottom: 20px;">` : ""}
${title ? `<h1 style="margin: 0 0 10px 0; color: #333;">${esc(title)}</h1>` : ""}
${content ? `<p style="margin: 0; color: #666;">${esc(content)}</p>` : ""}
<p style="margin-top: 40px; font-size: 14px; color: #999;">This page is used for Open Graph meta tags (richheader) only.</p>
</body>
</html>`;
}