From 708f25ce83e3ee42ef5ac9da81eb9b29006fe43b Mon Sep 17 00:00:00 2001
From: Dan Cojocaru <dan@dcdev.ro>
Date: Fri, 17 Mar 2023 03:16:51 +0100
Subject: [PATCH] Manipulate history when viewing yesterday's train

---
 sw.js         |  2 +-
 view-train.js | 18 +++++++++++++++++-
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/sw.js b/sw.js
index 7b9b09c..a0f4573 100755
--- a/sw.js
+++ b/sw.js
@@ -1,4 +1,4 @@
-const VERSION = 'v33'
+const VERSION = 'v34'
 const API_ORIGIN = 'https://scraper.infotren.dcdev.ro/'
 const API_TRAINS = `${API_ORIGIN}v3/trains`
 const API_STATIONS = `${API_ORIGIN}v3/stations`
diff --git a/view-train.js b/view-train.js
index b68da97..f476658 100755
--- a/view-train.js
+++ b/view-train.js
@@ -89,6 +89,16 @@ function onTrainData(data, fetchDate) {
 		e.preventDefault()
 		// Implement date switcher
 		yesterday = !yesterday
+		if (!yesterday) {
+			history.back()
+		}
+		else {
+			const yesterdayUrl = new URL(location.href)
+			const newDate = new Date(date.getTime())
+			newDate.setDate(newDate.getDate() - 1)
+			yesterdayUrl.searchParams.set('date', newDate.toISOString())
+			history.pushState('', '', yesterdayUrl)
+		}
 		refresh()
 	})
 
@@ -495,7 +505,13 @@ function rsk() {
 }
 
 window.addEventListener('popstate', function (e) {
-	groupIndex = null
+	if (yesterday) {
+		yesterday = false
+		trainData = null
+	}
+	else {
+		groupIndex = null
+	}
 	if (trainData) {
 		onTrainData(trainData)
 	}