Initial

server/models/groupModel.js

@@ -0,0 +1,25 @@
+import { db, id, now } from '../db.js';
+import { camelGroup } from './mappers.js';
+
+export function listGroups() {
+  return db.prepare(`
+    SELECT g.*, COUNT(ug.user_id) AS member_count
+    FROM groups g
+    LEFT JOIN user_groups ug ON ug.group_id = g.id
+    GROUP BY g.id
+    ORDER BY g.name
+  `).all().map((group) => ({ ...camelGroup(group), memberCount: group.member_count }));
+}
+
+export function createGroup(payload) {
+  const groupId = id('grp');
+  db.prepare('INSERT INTO groups (id, name, description, created_at) VALUES (?, ?, ?, ?)').run(
+    groupId,
+    payload.name,
+    payload.description || '',
+    now()
+  );
+  const stmt = db.prepare('INSERT OR IGNORE INTO user_groups (user_id, group_id) VALUES (?, ?)');
+  for (const userId of payload.userIds) stmt.run(userId, groupId);
+  return camelGroup(db.prepare('SELECT * FROM groups WHERE id = ?').get(groupId));
+}