From a9cdfb567a3f1dd29e5060c1af6b7dc960a5bb9c Mon Sep 17 00:00:00 2001
From: naielv <109038805+naielv@users.noreply.github.com>
Date: Thu, 25 Dec 2025 01:46:48 +0100
Subject: [PATCH] Add fecha-diff to materiales

---
 src/app_modules.js     | 31 +++++++++++++++++++++++++++++++
 src/page/materiales.js |  2 +-
 2 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/src/app_modules.js b/src/app_modules.js
index 4ffe8cd..c8cb292 100644
--- a/src/app_modules.js
+++ b/src/app_modules.js
@@ -896,6 +896,37 @@ function TS_IndexElement(
             new_tr.appendChild(tdFechaISO);
             break;
           }
+          case "fecha-diff": {
+            const tdFechaISO = document.createElement("td");
+            if (data[key.key]) {
+              const fecha = new Date(data[key.key]);
+              const now = new Date();
+              const diffTime = Math.abs(now - fecha);
+              const diffDays = Math.floor(diffTime / (1000 * 60 * 60 * 24));
+              const diffMonths = Math.floor(diffDays / 30);
+              const diffYears = Math.floor(diffDays / 365);
+              let diffString = "";
+              if (diffYears > 0) {
+                diffString += diffYears + " año" + (diffYears > 1 ? "s " : " ");
+              }
+              if (diffMonths % 12 > 0) {
+                diffString +=
+                  (diffMonths % 12) +
+                  " mes" +
+                  (diffMonths % 12 > 1 ? "es " : " ");
+              }
+              
+              // if more than 3 months, show rgb(255, 192, 192) as background
+              if (diffMonths >= 3) {
+                tdFechaISO.style.backgroundColor = "rgb(255, 192, 192)";
+              } else if (diffMonths >= 1) {
+                tdFechaISO.style.backgroundColor = "rgb(252, 252, 176)";
+              }
+              tdFechaISO.innerText = diffString.trim();
+            }
+            new_tr.appendChild(tdFechaISO);
+            break;
+          }
           case "template": {
             const tdCustomTemplate = document.createElement("td");
             new_tr.appendChild(tdCustomTemplate);
diff --git a/src/page/materiales.js b/src/page/materiales.js
index 446dd3b..f5e4bec 100644
--- a/src/page/materiales.js
+++ b/src/page/materiales.js
@@ -136,7 +136,7 @@ PAGES.materiales = {
     `;
 
     const config = [
-      { key: "Revision", label: "F. Revisión", type: "fecha", default: "" },
+      { key: "Revision", label: "Ult. Revisión", type: "fecha-diff", default: "" },
       { key: "Nombre", label: "Nombre", type: "text", default: "" },
       { key: "Ubicacion", label: "Ubicación", type: "text", default: "--" },
       {