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Extract the decoded body of an email message encoded in quoted-printable format, sourcing from a public ethereal.email link.

This supports a workflow for checking the HTML code generated by email tools; give a public ethereal.email message ID as the email_id param, and this val returns the body of the email as clipboard-ready text. (I just needed this really badly tonight!)

Utterly unprepared for emails that are not quoted-printable content type. Will blow up.

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import { fetch } from "https://esm.town/v/std/fetch";
export const etherealExtractor = async function (
req: express.Request,
res: express.Response,
) {
try {
const { default: qp } = await import("npm:quoted-printable");
let email_id;
switch (req.method) {
case "GET": {
email_id = req.query.email_id;
break;
}
case "POST": {
email_id = req.body.email_id;
}
}
if (!email_id)
return res.status(400).send({ message: "email_id is required" });
const sourceUrl = `https://ethereal.email/message/${email_id}/message.eml`;
const resource = await fetch(sourceUrl);
const eml = await resource.text();
const headerEndsAt = eml.search(/\n\s+\n/);
return res.status(200).type("text").send(qp.decode(eml.slice(headerEndsAt)))
.end();
}
catch (e) {
res.status(500).json({
message: e.message,
});
}
};
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October 23, 2023