ID Already Exists form reset.

Fixes #2

Form data is preserved and the error message stays longer and shows the next id.

Author: cantis

app/blueprints/miniatures.py

@@ -83,7 +83,7 @@ def add():
             "notes": form.get("notes"),
         }
         # Prevent duplicate (series, unique_id) combination
-        from sqlalchemy import and_
+        from sqlalchemy import and_, func
 
         from ..extensions import session_scope
         from ..models.miniature import Miniature
@@ -95,8 +95,27 @@ def add():
                 .first()
             )
             if existing:
-                flash(f"Unique ID {unique_id} already exists in Series {series}", "danger")
-                return render_template("miniatures/add.html")
+                # Calculate next available unique_id in this series
+                max_unique = (
+                    session.query(func.max(Miniature.unique_id))
+                    .filter(Miniature.series == series)
+                    .scalar()
+                ) or 0
+                next_unique = max_unique + 1
+                
+                # Preserve all form fields and suggest next ID
+                prefill = {
+                    "series": series,
+                    "unique_id": next_unique,
+                    "prefix": form.get("prefix"),
+                    "chassis": form.get("chassis"),
+                    "type": form.get("type"),
+                    "status": form.get("status"),
+                    "tray_id": form.get("tray_id"),
+                    "notes": form.get("notes"),
+                }
+                flash(f"Unique ID {unique_id} already exists in Series {series}. Suggested next ID: {next_unique}", "danger")
+                return render_template("miniatures/add.html", prefill=prefill)
 
         add_miniature(data)
         flash("Miniature added", "success")

app/templates/base.html

@@ -26,13 +26,13 @@
             {% endfor %}
         </div>
         <script>
-            // Auto-fade alerts after 3 seconds
+            // Auto-fade alerts after 6 seconds
             setTimeout(() => {
                 document.querySelectorAll('.alert').forEach(alert => {
                     const bsAlert = new bootstrap.Alert(alert);
                     bsAlert.close();
                 });
-            }, 3000);
+            }, 6000);
         </script>
         {% endif %}
         {% endwith %}