feat(intake): require an address for an upload link and send the link to it (#260)

Creating a link now requires a valid email address and mails the link to it, which is the whole point: getting a link to a contributor was previously a copy-and-paste into whatever the admin happened to use.

The send is awaited and its outcome reported, unlike every other sender in this codebase, which fires and forgets because nobody is waiting on the answer. Here somebody is. The admin is looking at the screen, and whether they now have to send the link by hand is exactly the thing they need to know — and QA blocks delivery to any address outside MAIL_ALLOWLIST by design, so a link that was never emailed would otherwise look precisely like one that was.

A send that could not happen does not roll the link back. The token is displayed exactly once, so a rollback would leave the admin retrying and holding a different link, discarding work that had succeeded. They end up with a usable link and an honest statement about delivery instead.

One inaccuracy left deliberately: an SMTP rejection is reported as skipped-unconfigured rather than a fourth outcome of its own. The distinction is real but nothing consumes it, and the admin's next action is identical either way.

Also updates the other integration tests that created a link with only a label, since an address is now required, and adds the uploadLink template key that GET /api/admin/email-templates was missing from its list — an omission left by the template's addition in the prior commit on this branch.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

backend/src/routes/adminUploadLinks.ts

@@ -2,7 +2,10 @@ import { Router, Request, Response } from 'express';
 import { pool, requireRow } from '../db';
 import { asyncRoute } from '../asyncRoute';
 import { generateToken, hashToken } from '../uploadLinks';
-import { trimTrailingSlashes } from '../utils';
+import { trimTrailingSlashes, isValidEmail } from '../utils';
+import { sendMail, MailOutcome } from '../mailer';
+import { renderTemplate } from '../emailTemplates';
+import { loadStoredTemplate } from './adminEmailTemplates';
 
 const router = Router();
 
@@ -27,7 +30,7 @@ const router = Router();
  * `token_hash` into every listing the moment somebody added a convenience.
  */
 const LINK_SELECT = `
-  SELECT id, label, revoked_at, submission_count, max_submissions, last_used_at, created_at
+  SELECT id, label, contact_email, revoked_at, submission_count, max_submissions, last_used_at, created_at
   FROM upload_links
 `;
 
@@ -44,6 +47,7 @@ const DEFAULT_MAX_SUBMISSIONS = 25;
 interface UploadLinkRow {
   id: number;
   label: string;
+  contact_email: string | null;
   revoked_at: string | null;
   submission_count: number;
   max_submissions: number | null;
@@ -51,6 +55,19 @@ interface UploadLinkRow {
   created_at: string;
 }
 
+/**
+ * What the mail tells the recipient about how much they may send.
+ *
+ * Words rather than a bare number for an uncapped link, so the sentence reads
+ * as a sentence instead of showing an empty space where a figure should be.
+ * An uncapped link is a deliberate choice the admin already had to make, so it
+ * is emailable like any other.
+ */
+function submissionsAllowed(maxSubmissions: number | null): string {
+  if (maxSubmissions === null) return 'as many items as you like';
+  return maxSubmissions === 1 ? '1 item' : `${maxSubmissions} items`;
+}
+
 router.get('/', asyncRoute(async (_req: Request, res: Response) => {
   const { rows } = await pool.query<UploadLinkRow>(`${LINK_SELECT} ORDER BY created_at DESC`);
   res.json(rows);
@@ -62,6 +79,11 @@ router.post('/', asyncRoute(async (req: Request, res: Response) => {
     return res.status(400).json({ error: 'a label is required' });
   }
 
+  const email = typeof req.body?.email === 'string' ? req.body.email.trim() : '';
+  if (email === '' || !isValidEmail(email)) {
+    return res.status(400).json({ error: 'a valid email address is required' });
+  }
+
   // Three cases, deliberately distinct. Absent means nobody decided, which
   // gets the bounded default. An explicit null means unlimited — a decision
   // someone made, visible in the request. A number is itself. Reading absent
@@ -80,10 +102,10 @@ router.post('/', asyncRoute(async (req: Request, res: Response) => {
 
   const token = generateToken();
   const { rows } = await pool.query<UploadLinkRow>(
-    `INSERT INTO upload_links (label, token_hash, max_submissions)
-     VALUES ($1, $2, $3)
-     RETURNING id, label, revoked_at, submission_count, max_submissions, last_used_at, created_at`,
-    [label, hashToken(token), maxSubmissions]
+    `INSERT INTO upload_links (label, token_hash, max_submissions, contact_email)
+     VALUES ($1, $2, $3, $4)
+     RETURNING id, label, contact_email, revoked_at, submission_count, max_submissions, last_used_at, created_at`,
+    [label, hashToken(token), maxSubmissions, email]
   );
   const link = requireRow(rows, 'the upload_links INSERT');
 
@@ -91,7 +113,43 @@ router.post('/', asyncRoute(async (req: Request, res: Response) => {
   // outbound link is built from. Absent in local development, which yields a
   // relative URL the admin screen can still show and copy usefully.
   const base = trimTrailingSlashes(process.env.PUBLIC_URL ?? '');
-  res.status(201).json({ ...link, token, url: `${base}/submit/${token}` });
+  const url = `${base}/submit/${token}`;
+
+  // Awaited, and its outcome reported rather than swallowed. Every other sender
+  // in this codebase fires and forgets because nobody is waiting on the answer;
+  // here somebody is — the admin is looking at the screen, and whether they
+  // now have to send the link by hand is the thing they need to know.
+  //
+  // A failure does not roll the link back. The token is shown exactly once, so
+  // a rollback would leave the admin retrying and holding a different link,
+  // discarding work that succeeded for the sake of tidiness.
+  let outcome: MailOutcome = 'skipped-unconfigured';
+  try {
+    const template = renderTemplate('uploadLink', await loadStoredTemplate('uploadLink'), {
+      submitUrl: url,
+      label: link.label,
+      submissionsAllowed: submissionsAllowed(link.max_submissions)
+    });
+    outcome = await sendMail(email, template.subject, template.html);
+  } catch (err) {
+    // Reported, not thrown. The link exists and is usable; the admin needs to
+    // be told the mail did not go, not handed a 500 for a link that was made.
+    //
+    // An SMTP rejection also lands here and is reported the same way as an
+    // unconfigured environment, which is not strictly accurate — a fourth
+    // outcome would be a real distinction, but nothing consumes it and the
+    // admin's next action is identical either way: copy the link and send it
+    // by hand.
+    console.error(`[upload-links] could not email ${email}:`, err);
+    outcome = 'skipped-unconfigured';
+  }
+
+  res.status(201).json({
+    ...link,
+    token,
+    url,
+    mail: { sent: outcome === 'sent', outcome }
+  });
 }));
 
 /**