Implement bulk user management features: add user generation preview and bulk creation functionality in CID group view

generic/views.py

@@ -4561,6 +4561,78 @@ def cid_group_view_detail(request, group_id):
     )
 
 
+@user_is_cid_user_manager
+def cid_group_generate_preview(request, group_id):
+    """Parse submitted rows and return a preview fragment for HTMX."""
+    if not request.htmx:
+        raise Http404()
+
+    group = get_object_or_404(CidUserGroup, pk=group_id)
+    rows_text = request.POST.get('rows', '')
+    original = rows_text
+    parsed = []
+    for line in rows_text.splitlines():
+        line = line.strip()
+        if not line:
+            continue
+        # Accept CSV or tab-separated: name,email or just email
+        parts = [p.strip() for p in line.replace('\t', ',').split(',') if p.strip()]
+        if len(parts) == 1:
+            email = parts[0]
+            name = ''
+        else:
+            name = parts[0]
+            email = parts[1]
+        parsed.append({'name': name, 'email': email})
+
+    html = render_to_string('generic/partials/cid_group_generate_preview.html', {'rows': parsed, 'original': original, 'group': group}, request=request)
+    return HttpResponse(html)
+
+
+@user_is_cid_user_manager
+def cid_group_create_bulk(request, group_id):
+    """Create CidUser rows from posted rows and add them to the group, returning updated users list HTML."""
+    if not request.htmx:
+        raise Http404()
+
+    group = get_object_or_404(CidUserGroup, pk=group_id)
+    rows_text = request.POST.get('rows', '')
+    created = []
+    import secrets
+
+    for line in rows_text.splitlines():
+        line = line.strip()
+        if not line:
+            continue
+        parts = [p.strip() for p in line.replace('\t', ',').split(',') if p.strip()]
+        if len(parts) == 1:
+            email = parts[0]
+            name = ''
+        else:
+            name = parts[0]
+            email = parts[1]
+
+        # generate cid and passcode
+        try:
+            cid_val = get_next_cid()
+        except Exception:
+            # fallback: max+1
+            last = CidUser.objects.order_by('-cid').first()
+            cid_val = (last.cid if last and last.cid else 0) + 1
+
+        passcode = secrets.token_hex(3)
+
+        cu = CidUser.objects.create(cid=cid_val, passcode=passcode, name=name, email=email, group=group)
+        created.append(cu)
+
+    # re-render the users list
+    users = group.ciduser_set.filter(active=True)
+    inner = render_to_string('generic/partials/group_users_list.html', {'users': users, 'group_type': 'cid'}, request=request)
+    # return the wrapper so HTMX can replace the container even if it didn't exist before
+    html = f"<div id=\"group-users-wrap\">{inner}</div>"
+    return HttpResponse(html)
+
+
 @user_is_cid_user_manager
 def cid_group_view_all(request):
     groups = CidUserGroup.objects.filter()