Allow viewing yesterday's train

This can be achieved by selecting the date in the view train screen.

sw.js

@@ -1,4 +1,4 @@
-const VERSION = 'v10'
+const VERSION = 'v11'
 const API_ORIGIN = 'https://scraper.infotren.dcdev.ro/'
 const API_TRAINS = `${API_ORIGIN}v3/trains`
 const API_STATIONS = `${API_ORIGIN}v3/stations`

view-train.js

@@ -2,6 +2,7 @@ var trainNumber
 var date
 var groupIndex = null
 
+var yesterday = false
 var showKm = false
 
 var trainData = null
@@ -39,10 +40,12 @@ function onTrainData(data) {
 	dateHref.textContent = data.date
 	dateHref.href = '#'
 	dateHref.classList.add('no-a-custom')
-	// dateHref.classList.add('items', 'no-a-custom')
+	dateHref.classList.add('items', 'no-a-custom')
 	dateHref.addEventListener('click', function (e) {
 		e.preventDefault()
 		// Implement date switcher
+		yesterday = !yesterday
+		refresh()
 	})
 
 	document.getElementById('loading').classList.add('hidden')
@@ -340,8 +343,15 @@ function refresh() {
 			refresh()
 		}, timeout || 60000)
 	}
+	/**
+	 * @type {Date}
+	 */
+	var reqDate = date
+	if (yesterday) {
+		reqDate.setDate(reqDate.getDate() - 1)
+	}
 	return fetch(
-		`https://scraper.infotren.dcdev.ro/v3/trains/${trainNumber}?date=${date.getFullYear().toString()}-${(date.getMonth() + 1).toString().padStart(2, "0")}-${date.getDate().toString().padStart(2, "0")}`,
+		`https://scraper.infotren.dcdev.ro/v3/trains/${trainNumber}?date=${reqDate.getFullYear().toString()}-${(reqDate.getMonth() + 1).toString().padStart(2, "0")}-${reqDate.getDate().toString().padStart(2, "0")}`,
 		{
 			cache: 'no-store',
 		},