fix: doodstream two-step upload (follow HTML form redirect)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

lib/doodstream-upload.js

@@ -286,16 +286,59 @@ class DoodstreamUploader {
     }
 
     if (!payload) {
-      // Try to extract from HTML response
-      const match = resText.match(/filecode['":\s]+['"]([a-zA-Z0-9]+)['"]/i);
-      if (match) {
+      // Try to extract filecode directly from HTML
+      const codeMatch = resText.match(/filecode['":\s]+['"]([a-zA-Z0-9]+)['"]/i);
+      if (codeMatch) {
         return {
-          download_url: `https://doodstream.com/d/${match[1]}`,
-          embed_url: `https://doodstream.com/e/${match[1]}`,
-          file_code: match[1]
+          download_url: `https://doodstream.com/d/${codeMatch[1]}`,
+          embed_url: `https://doodstream.com/e/${codeMatch[1]}`,
+          file_code: codeMatch[1]
         };
       }
-      throw new Error(`Doodstream Upload: Keine gueltige Antwort (HTTP ${statusCode}, Body: ${resText.slice(0, 150)})`);
+
+      // Follow HTML form redirect (two-step upload)
+      const formAction = resText.match(/<form[^>]*action=['"]([^'"]+)['"]/i);
+      if (formAction) {
+        const hiddenFields = {};
+        const inputRegex = /<input[^>]*type=['"]hidden['"][^>]*name=['"]([^'"]+)['"][^>]*value=['"]([^'"]*)['"]/gi;
+        let m;
+        while ((m = inputRegex.exec(resText)) !== null) {
+          hiddenFields[m[1]] = m[2];
+        }
+        // Also try reversed attribute order (value before name)
+        const inputRegex2 = /<input[^>]*value=['"]([^'"]*)['""][^>]*name=['"]([^'"]+)['"]/gi;
+        while ((m = inputRegex2.exec(resText)) !== null) {
+          if (!hiddenFields[m[2]]) hiddenFields[m[2]] = m[1];
+        }
+
+        const formData = new URLSearchParams(hiddenFields);
+        const followRes = await this._fetch(formAction[1], {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
+          body: formData.toString()
+        });
+        const followText = await followRes.text();
+
+        // Try JSON from follow response
+        let followPayload;
+        try { followPayload = JSON.parse(followText); } catch {}
+        if (followPayload) {
+          payload = followPayload;
+        } else {
+          // Try filecode from follow response HTML
+          const followCode = followText.match(/filecode['":\s]+['"]([a-zA-Z0-9]+)['"]/i);
+          if (followCode) {
+            return {
+              download_url: `https://doodstream.com/d/${followCode[1]}`,
+              embed_url: `https://doodstream.com/e/${followCode[1]}`,
+              file_code: followCode[1]
+            };
+          }
+          throw new Error(`Doodstream Upload: Redirect-Antwort ungueltig (${followText.slice(0, 150)})`);
+        }
+      } else {
+        throw new Error(`Doodstream Upload: Keine gueltige Antwort (HTTP ${statusCode}, Body: ${resText.slice(0, 150)})`);
+      }
     }
 
     if (payload.status && Number(payload.status) !== 200 && payload.msg) {