// Reduced from the personal site's redirect handler. No dependencies.
// Save as redirect-repro.mjs and run: node redirect-repro.mjs
import assert from 'node:assert/strict';
const redirects = [
  { from: '/journal', to: '/writing', status: 301, preserveQuery: true, enabled: true },
  { from: '/old', to: '/new', status: 302, preserveQuery: false, enabled: true },
  { from: '/disabled', to: '/writing', status: 301, enabled: false },
];
function getModeledRedirect(pathname, search = '') {
  const row = redirects.find(entry => entry.enabled && entry.from === pathname);
  return row ? { status: row.status, location: row.to + (row.preserveQuery ? search : '') } : null;
}
// Before: the table exists, but nothing connects it to an incoming request.
function disconnected() { return new Response('Not found', { status: 404 }); }
function connected(request) {
  const url = new URL(request.url);
  const row = getModeledRedirect(url.pathname, url.search);
  return row ? Response.redirect(new URL(row.location, url), row.status)
    : new Response('Not found', { status: 404 });
}
const request = path => new Request('https://example.test' + path);
assert.equal(disconnected(request('/journal')).status, 404);
const result = connected(request('/journal?from=bookmark'));
assert.equal(result.status, 301);
assert.equal(result.headers.get('location'), 'https://example.test/writing?from=bookmark');
assert.equal(connected(request('/unknown')).status, 404);
assert.equal(connected(request('/disabled')).status, 404);
assert.equal(connected(request('/journal/child')).status, 404);
assert.equal(connected(request('/old?discard=this')).headers.get('location'), 'https://example.test/new');
console.log('PASS: disconnected route, redirect status, query preservation, unknown and disabled paths.');