From 6628e2c89c18a39f01738e3acbdaf5302295f2d1 Mon Sep 17 00:00:00 2001
From: Neil Brommer <neil@neilbrommer.com>
Date: Sun, 31 Dec 2017 15:52:48 -0800
Subject: [PATCH] Simplify calcBackground

---
 js/main.js | 38 ++++++++++++++++----------------------
 1 file changed, 16 insertions(+), 22 deletions(-)

diff --git a/js/main.js b/js/main.js
index 8959551..a64ed81 100644
--- a/js/main.js
+++ b/js/main.js
@@ -1,6 +1,14 @@
 // use this when making changes so that there is no need to parse the page
-var backgroundList = ["img/1.png", "img/2.png", "img/3.png", "img/4.png",
-	"img/5.png", "img/6.png", "img/7.png", "img/8.png"];
+var backgroundList = [
+	{address: "img/1.png", dark: false},
+	{address: "img/2.png", dark: false},
+	{address: "img/3.png", dark: false},
+	{address: "img/4.png", dark: false},
+	{address: "img/5.png", dark: false},
+	{address: "img/6.png", dark: true},
+	{address: "img/7.png", dark: true},
+	{address: "img/8.png", dark: true}
+];
 
 $(document).ready(function () {
 	calcBackground();
@@ -14,30 +22,16 @@ function calcBackground() {
 		var mins = now.getMinutes();
 		var total = (hours * 60) + mins;
 
-		// 24*60 = 1440
-		// 2:40 between each step
-		if (total > 300 && total < 460) // 5:00 - 7:40
-			setBackground(0, false);
-		else if (total > 460 && total < 620)
-			setBackground(1, false);
-		else if (total > 620 && total < 780)
-			setBackground(2, false);
-		else if (total > 780 && total < 940)
-			setBackground(3, false);
-		else if (total > 940 && total < 1100)
-			setBackground(4, false);
-		else if (total > 1100 && total < 1260)
-			setBackground(5, true);
-		else if (total > 1260 && total < 1420)
-			setBackground(6, true);
-		else
-			setBackground(7, true);
+		var period = (24 / backgroundList.length) * 60; // in minutes
+
+		var background = backgroundList[Math.floor(total / period)];
+		setBackground(background.address, background.dark);
 	}
 }
 
-function setBackground(num, dark) {
+function setBackground(address, dark) {
 	// dark is a boolean that indicates the brightness of the background
-	$("body").css("background-image", "url(" + backgroundList[num] + ")");
+	$("body").css("background-image", "url(" + address + ")");
 
 	if (dark) {
 		$(".navbar").removeClass("navbar-dark").addClass("navbar-light");