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feat(telegram): send author avatar as richheader link-preview card

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Serve an OG page at /api/richheader and use a small link-preview card
(avatar + author name) above the message instead of sending a photo.
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RhenCloud 2026-08-03 07:13:07 +08:00
parent be50d23319
commit fc2e2c2efa
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5 changed files with 61 additions and 1 deletions
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src/web/richheader-routes.ts Normal file
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import { Hono } from "hono";
function esc(s: string): string {
return String(s)
.replace(/&/g, "&")
.replace(/"/g, """)
.replace(/</g, "&lt;")
.replace(/>/g, "&gt;");
}
export function createRichHeaderRoutes(): Hono {
const app = new Hono();
app.get("/richheader", (c) => {
const title = c.req.query("title") ?? "";
const content = c.req.query("content") ?? "";
const avatar = c.req.query("avatar") ?? "";
const html = `<!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>`;
return c.html(html);
});
return app;
}