0.12.0 Begin neu Architecture

backend/src/services/downloadService.js

@@ -119,6 +119,7 @@ class DownloadService {
     }
 
     const nowIso = new Date().toISOString();
+    const pendingResumeIds = [];
 
     for (const entry of entries) {
       if (!entry.isFile() || !entry.name.endsWith('.json')) {
@@ -136,11 +137,34 @@ class DownloadService {
 
       let changed = false;
       if (item.status === 'queued' || item.status === 'processing') {
-        item.status = 'failed';
-        item.errorMessage = 'ZIP-Erstellung wurde durch einen Server-Neustart unterbrochen.';
-        item.finishedAt = nowIso;
-        changed = true;
-        await this._safeUnlink(item.partialPath);
+        const archiveExists = await this._pathExists(item.archivePath);
+        if (archiveExists) {
+          const archiveStat = await fs.promises.stat(item.archivePath).catch(() => null);
+          item.status = 'ready';
+          item.errorMessage = null;
+          item.finishedAt = item.finishedAt || nowIso;
+          item.sizeBytes = Number.isFinite(Number(archiveStat?.size))
+            ? archiveStat.size
+            : item.sizeBytes;
+          changed = true;
+          logger.warn('download:init:recovered-ready-archive', {
+            id: item.id,
+            archiveName: item.archiveName
+          });
+        } else {
+          item.status = 'queued';
+          item.startedAt = null;
+          item.finishedAt = null;
+          item.errorMessage = null;
+          item.sizeBytes = null;
+          changed = true;
+          pendingResumeIds.push(item.id);
+          await this._safeUnlink(item.partialPath);
+          logger.warn('download:init:requeue-interrupted-job', {
+            id: item.id,
+            archiveName: item.archiveName
+          });
+        }
       } else if (item.status === 'ready') {
         const exists = await this._pathExists(item.archivePath);
         if (!exists) {
@@ -157,6 +181,17 @@ class DownloadService {
         await this._persistItem(item);
       }
     }
+
+    if (pendingResumeIds.length > 0) {
+      logger.warn('download:init:resume-pending-jobs', {
+        count: pendingResumeIds.length
+      });
+      setImmediate(() => {
+        for (const id of pendingResumeIds) {
+          void this._startArchiveJob(id);
+        }
+      });
+    }
   }
 
   _normalizeLoadedItem(rawItem, fallbackDir) {