fix(doodstream): recover codeless API uploads by polling the file list by name

Backstop for the API path: if the doodapi upload POST returns no filecode (the
same backend registration hiccup that empties the web form), poll
doodapi.co/api/file/list for a newly-appeared file whose normalized title
matches what we uploaded, and claim its code — instead of failing the upload.

This is the exact recovery byse already uses in this file for the identical
symptom (large MKV, server-side "OK" but empty immediate response, file shows up
in the account shortly after). Doodstream is the same XFileSharing family with
the same doodapi-style API, and it directly addresses the user's observation
that the same file often succeeds on a second run.

- _fetchDoodstreamFileList / _resolveDoodstreamUploadByName: list via
  /api/file/list?key=&per_page=200, baseline-diff + exact normalized-title match
  (never "take the only new one", so parallel uploads can't claim each other's
  files), 12 polls × 2.5s.
- uploadFile snapshots a doodstream baseline before upload and polls after a
  codeless result, before the hosterTransient throw.

Verified solo: doodapi.co is reachable and returns {"status":400,"msg":"Invalid
key"} for a bad key, so the validation/list path keys off status correctly.
178/178. The real large-file run on the server is the final confirmation.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

lib/hosters.js

@@ -446,6 +446,54 @@ async function _resolveByseUploadByName(apiKey, fileName, baselineCodes, signal)
   return null;
 }
 
+async function _fetchDoodstreamFileList(apiKey, signal) {
+  // doodapi.co file list: { msg, status:200, result: { files: [{ file_code, title, uploaded, ... }] } }
+  const url = `https://doodapi.co/api/file/list?key=${encodeURIComponent(apiKey)}&per_page=200`;
+  try {
+    const { body, statusCode } = await request(url, {
+      method: 'GET', signal,
+      headers: { 'Accept': 'application/json', 'User-Agent': 'multi-hoster-uploader/1.1' },
+      headersTimeout: 30_000, bodyTimeout: 30_000
+    });
+    const text = await body.text();
+    if (statusCode < 200 || statusCode >= 300) return [];
+    const data = JSON.parse(text);
+    const files = data && data.result && Array.isArray(data.result.files) ? data.result.files : [];
+    return files.map(f => ({
+      file_code: String(f.file_code || f.filecode || '').trim(),
+      file_name: String(f.title || f.file_name || f.name || '').trim()
+    })).filter(f => f.file_code);
+  } catch {
+    return [];
+  }
+}
+
+async function _resolveDoodstreamUploadByName(apiKey, fileName, baselineCodes, signal) {
+  // Same recovery byse uses: the upload POST returned no filecode, but the file
+  // may register in the account a little later. Poll the list for a NEW file
+  // whose normalized title matches what we uploaded. Exact-name match only
+  // (never "take the only new one") so parallel doodstream uploads can't claim
+  // each other's files.
+  const expected = _normalizeFileTitle(fileName);
+  const POLL_ATTEMPTS = 12;
+  const POLL_DELAY_MS = 2500;
+  for (let i = 0; i < POLL_ATTEMPTS; i++) {
+    if (signal && signal.aborted) return null;
+    const list = await _fetchDoodstreamFileList(apiKey, signal);
+    const fresh = list.filter(f => !baselineCodes.has(f.file_code));
+    const match = fresh.find(f => _normalizeFileTitle(f.file_name) === expected);
+    if (match) {
+      return {
+        download_url: `https://doodstream.com/d/${match.file_code}`,
+        embed_url: `https://doodstream.com/e/${match.file_code}`,
+        file_code: match.file_code
+      };
+    }
+    if (i < POLL_ATTEMPTS - 1) await sleep(POLL_DELAY_MS, signal);
+  }
+  return null;
+}
+
 async function uploadFile(hosterName, filePath, apiKey, onProgress, signal, throttle) {
   const config = HOSTER_CONFIGS[hosterName];
   if (!config) throw new Error(`Unbekannter Hoster: ${hosterName}`);
@@ -458,6 +506,13 @@ async function uploadFile(hosterName, filePath, apiKey, onProgress, signal, thro
     const baseline = await _fetchByseFileList(apiKey, signal);
     byseBaseline = new Set(baseline.map(f => f.file_code));
   }
+  // Doodstream: same snapshot so a codeless upload response can be recovered by
+  // matching a newly-appeared file in the account by name (see below).
+  let doodBaseline = null;
+  if (hosterName === 'doodstream.com') {
+    const baseline = await _fetchDoodstreamFileList(apiKey, signal);
+    doodBaseline = new Set(baseline.map(f => f.file_code));
+  }
 
   // Step 1: Get upload server
   const uploadUrl = await getUploadServer(hosterName, config, apiKey, signal);
@@ -537,6 +592,15 @@ async function uploadFile(hosterName, filePath, apiKey, onProgress, signal, thro
     if (polled) return polled;
   }
 
+  // Doodstream: the doodapi upload POST returned no filecode (the same backend
+  // hiccup that empties the web form). Poll the account file list by name — if
+  // the file did register, claim its code instead of failing the upload.
+  if (hosterName === 'doodstream.com' && doodBaseline) {
+    const fileName = path.basename(filePath);
+    const polled = await _resolveDoodstreamUploadByName(apiKey, fileName, doodBaseline, signal);
+    if (polled) return polled;
+  }
+
   if (parseErr) throw parseErr;
 
   if (payload.success === false) {