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import { PREVIEW_PLASMIC } from "../../plasmic-init";
export default async function preview(req, res) {
// Check the secret and next parameters
// This secret should only be known to this API route and the CMS
if (
req.query.secret !== process.env.PLASMIC_PREVIEW_SECRET ||
!req.query.slug
) {
return res.status(401).json({ message: "Invalid token" });
}
// Check if the page with the given `slug` exists
const pages = await PREVIEW_PLASMIC.fetchPages();
const pageMeta = pages.find((p) => p.path === req.query.slug);
// If the slug doesn't exist prevent preview mode from being enabled
if (!pageMeta) {
return res.status(401).json({ message: "Invalid slug" });
}
// Enable Draft Mode by setting the cookie
res.setDraftMode({ enable: true });
// Redirect to the path from the fetched post
// We don't redirect to req.query.slug as that might lead to open redirect vulnerabilities
res.redirect(pageMeta.path);
}
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