From 1ad6633cdd02ad7ce9362cd708d8589ce6621c5f Mon Sep 17 00:00:00 2001
From: dmolinari <dmolinari@eldia.com>
Date: Fri, 17 Apr 2026 11:45:56 -0300
Subject: [PATCH] feat(domain): MedioInactivoException (issue #16)

---
 .../Exceptions/MedioInactivoException.cs         | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 src/api/SIGCM2.Domain/Exceptions/MedioInactivoException.cs

diff --git a/src/api/SIGCM2.Domain/Exceptions/MedioInactivoException.cs b/src/api/SIGCM2.Domain/Exceptions/MedioInactivoException.cs
new file mode 100644
index 0000000..92e40c2
--- /dev/null
+++ b/src/api/SIGCM2.Domain/Exceptions/MedioInactivoException.cs
@@ -0,0 +1,16 @@
+namespace SIGCM2.Domain.Exceptions;
+
+/// <summary>
+/// Thrown when a mutation is attempted on a Seccion whose parent Medio is inactive.
+/// Cascades the freeze from Medio → Seccion (REQ-SEC-006).
+/// </summary>
+public sealed class MedioInactivoException : DomainException
+{
+    public int MedioId { get; }
+
+    public MedioInactivoException(int medioId)
+        : base($"El medio {medioId} está inactivo. No se pueden modificar sus secciones hasta reactivarlo.")
+    {
+        MedioId = medioId;
+    }
+}