From 4c4f007130ff20691b9ac2f5fbf05ed5be3c9931 Mon Sep 17 00:00:00 2001
From: JoelHMikael <joel.h.kronqvist@gmail.com>
Date: Thu, 30 Dec 2021 12:48:42 +0200
Subject: Example input

---
 index.html |  2 +-
 parse.js   | 28 ++++++++++++++++++++++++++++
 server.js  |  3 +++
 3 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/index.html b/index.html
index 4b6a503..b66abad 100644
--- a/index.html
+++ b/index.html
@@ -18,7 +18,7 @@
 				<form method="GET" class="float-block">
 					<label for="index" class="shadow">Opettaja, kurssi tai luokka:</label>
 					<br>
-					<input type="text" name="index" placeholder="sahe // ÄI1.2 // B203">
+					<input type="text" name="index" placeholder="\(example-input\)">
 					<img src="/help.png" class="info" alt="Siis häh?">
 					<span><p class="infoblock highlight">Syötä tähän kenttään yhdeltätoista alkavan tuntisi opettaja, kurssikoodi tai luokka. Älä syötä useampaa edellä mainituista, yksi on tarpeeksi.</p></span>
 					<br>
diff --git a/parse.js b/parse.js
index 7c47423..c3b7684 100644
--- a/parse.js
+++ b/parse.js
@@ -277,9 +277,37 @@ function getShift(day, index, db) // day: int, 1 = monday; index: string of cour
 	return res;
 }
 
+function randInt(start, stop)
+{
+	return start + Math.floor(Math.random() * (stop - start));
+}
+
+function getIndexes(db, day, shift, type)
+{
+	let d = db[day];
+	let sh = Object.values(d)[shift][type];
+	return Object.values(db[day])[shift][type];
+}
+
+function getRandomIndex(db, day = randInt(0, 5), shift = randInt(0, 3), type = randInt(0, 3))
+{
+	let el;
+	let i = 0;
+	let indexes = getIndexes(db, day, shift, type);
+	while ((el === undefined) && (i < indexes.length))
+	{
+		el = indexes[i];
+		i++;
+	}
+	if (el == undefined)
+		return getRandomIndex(db);
+	return el;
+}
+
 exports.build	= parseShift;
 exports.indexType = getIndexType;
 exports.classes = parseClasses;
 exports.get 	= getShift;
 exports.cluttered = parseCluttered;
 exports.find = findExpression;
+exports.randomIndex = getRandomIndex;
diff --git a/server.js b/server.js
index 2f45e95..d3c8838 100644
--- a/server.js
+++ b/server.js
@@ -132,6 +132,9 @@ async function buildMain(args)
 	if (res["shift"] === -1)
 		res["shift"] = "Kurssilla/opettajalla/luokalla ei ole ruokailua päivällä tai kurssia ei ole olemassa!";
 
+	// get the example input
+	res["example-input"] = parse.randomIndex(DB, day - 1);
+
 	// get the day
 	let weekdays = ["su", "ma", "ti", "ke", "to", "pe", "la"];
 	res["day"] = weekdays[day];
-- 
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