V0.1

server/lib/merge-attachment-events.js

@@ -0,0 +1,51 @@
+/**
+ * Mehrere ATTACHMENT-Events pro Ticket und Kalendertag (lokal) zu einem Event zusammenführen.
+ */
+export function mergeLegacyAttachmentEventsByDay(db) {
+  const rows = db
+    .prepare(
+      `SELECT id, ticket_id, created_at, description,
+              date(created_at, 'localtime') AS day_key
+       FROM events
+       WHERE type = 'ATTACHMENT'
+       ORDER BY ticket_id, day_key, created_at ASC`,
+    )
+    .all();
+
+  /** @type {Map<string, Array<{id: string, description: string}>>} */
+  const groups = new Map();
+  for (const r of rows) {
+    const k = `${r.ticket_id}|${r.day_key}`;
+    if (!groups.has(k)) groups.set(k, []);
+    groups.get(k).push({ id: r.id, description: r.description || '' });
+  }
+
+  for (const [, evs] of groups) {
+    if (evs.length <= 1) continue;
+    const keeper = evs[0].id;
+    const others = evs.slice(1);
+    const descParts = evs
+      .map((e) => String(e.description || '').trim())
+      .filter(Boolean);
+    const mergedDesc = [...new Set(descParts)].join('\n\n');
+
+    db.exec('BEGIN');
+    try {
+      db.prepare('UPDATE events SET description = ? WHERE id = ?').run(
+        mergedDesc,
+        keeper,
+      );
+      for (const o of others) {
+        db.prepare('UPDATE ticket_attachments SET event_id = ? WHERE event_id = ?').run(
+          keeper,
+          o.id,
+        );
+        db.prepare('DELETE FROM events WHERE id = ?').run(o.id);
+      }
+      db.exec('COMMIT');
+    } catch (e) {
+      db.exec('ROLLBACK');
+      throw e;
+    }
+  }
+}