From f411e07fb411e4276fd54ffde93453027f582ed0 Mon Sep 17 00:00:00 2001
From: Blaz Kristan <blaz@kristan-sp.si>
Date: Mon, 12 Apr 2021 23:00:22 +0200
Subject: [PATCH] Easier holiday/special events handling for background images.

---
 wled00/data/index.js | 26 +++++++++++++++++++-------
 1 file changed, 19 insertions(+), 7 deletions(-)

diff --git a/wled00/data/index.js b/wled00/data/index.js
index 0b62fcfe3..cdbf1c3f1 100644
--- a/wled00/data/index.js
+++ b/wled00/data/index.js
@@ -151,13 +151,25 @@ function cTheme(light) {
 
 function loadBg(iUrl) {
 	let bg = d.getElementById('bg');
-  let img = d.createElement("img");
-  img.src = iUrl;
-  if (iUrl == "") {
-    var today = new Date();
-    if (today.getMonth() == 11 && (today.getDate() > 23 && today.getDate() < 28)) img.src = "https://aircoookie.github.io/xmas.png";
-    else if (today.getMonth() == 3 && (today.getDate() > 3 && today.getDate() < 6)) img.src = "https://aircoookie.github.io/easter.png";
-  }
+	let img = d.createElement("img");
+	img.src = iUrl;
+	if (iUrl == "") {
+		var today = new Date();
+		var hol = [
+			[0,11,24,5,"https://aircoookie.github.io/xmas.png"], // christmas
+			[0,2,17,1,"https://images.alphacoders.com/491/491123.jpg"], // st. Patrick's day
+			[2022,3,16,3,"https://aircoookie.github.io/easter.png"],
+			[2023,3,8,3,"https://aircoookie.github.io/easter.png"],
+			[2024,2,30,3,"https://aircoookie.github.io/easter.png"]
+		]
+		for (var i=0; i<hol.length; i++) {
+			var yr = hol[i][0]==0 ? today.getFullYear() : hol[i][0];
+			var hs = new Date(yr,hol[i][1],hol[i][2]);
+			var he = new Date(hs)
+			he.setDate(he.getDate() + hol[i][3]);
+			if (today>=hs && today<=he)	img.src = hol[i][4];
+		}
+	}
 	img.addEventListener('load', (event) => {
 		var a = parseFloat(cfg.theme.alpha.bg);
 		if (isNaN(a)) a = 0.6;