From acbac64ed0a39b1c5dc2340c30e6a46819a16ff3 Mon Sep 17 00:00:00 2001
From: "Antonio Eduardo (SkyaTura)" <antonio@skyatura.com.br>
Date: Mon, 6 Jun 2022 14:18:38 -0300
Subject: [PATCH] Add support for holiday as a function

---
 lib/business-hours.js       |  8 +++++++-
 test/spec.business-hours.js | 17 +++++++++++++++++
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/lib/business-hours.js b/lib/business-hours.js
index 01f3789..86099fc 100644
--- a/lib/business-hours.js
+++ b/lib/business-hours.js
@@ -8,6 +8,10 @@ function getLocaleData(key) {
     return moment.localeData()['_' + key];
 }
 
+function conditionalMatch(d, today, payload) {
+  return typeof payload === "function" ? payload(d, today) : minimatch(today, payload);
+}
+
 function openingTimes(d) {
     d = d.clone();
     var hours = getLocaleData('workinghours');
@@ -214,9 +218,11 @@ moment.fn.isWorkingTime = function isWorkingTime(opts) {
 
 moment.fn.isHoliday = function isHoliday() {
     var isHoliday = false,
+        d = this,
         today = this.format('YYYY-MM-DD');
     (getLocaleData('holidays') || []).forEach(function (holiday) {
-        if (minimatch(today, holiday)) {
+        if (isHoliday) return
+        if (conditionalMatch(d, today, holiday)) {
             isHoliday = true;
         }
     });
diff --git a/test/spec.business-hours.js b/test/spec.business-hours.js
index a55bd83..e9a8b31 100644
--- a/test/spec.business-hours.js
+++ b/test/spec.business-hours.js
@@ -913,6 +913,23 @@ describe('moment.business-hours', function () {
             moment('2019-12-25').isWorkingDay().should.be.false;
         });
 
+        it('supports holidays as functions', function () {
+            moment.locale('en');
+            moment.locale('en', {
+                holidays: [
+                    function(d) {
+                      return d.month() === 4 &&
+                        d.day() === 0 &&
+                        d.week() === (d.clone().startOf('month').week() + 1)
+                    },
+                    '2015-02-27',
+                    '*-12-25'
+                ]
+            });
+            moment('2021-05-08').isHoliday().should.be.false;
+            moment('2022-05-08').isHoliday().should.be.true;
+        });
+
     });
 
 });