From 9cbef2064489d71c55d12b8d2992056b93af0fce Mon Sep 17 00:00:00 2001
From: Shaheed Azaad <shaheed.azaad@protonmail.com>
Date: Tue, 11 Nov 2025 00:11:03 +0100
Subject: [PATCH] added randomisation

---
 package-lock.json                      | 18 +++++++++++++++++-
 package.json                           |  3 ++-
 src/routes/participate/+page.server.js |  8 +++++++-
 3 files changed, 26 insertions(+), 3 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index b9596ab..7b40857 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -16,7 +16,8 @@
 				"@sveltejs/adapter-node": "^5.2.13",
 				"chart.js": "^4.5.0",
 				"drizzle-orm": "^0.40.0",
-				"exceljs": "^4.4.0"
+				"exceljs": "^4.4.0",
+				"knuth-shuffle-seeded": "^1.0.6"
 			},
 			"devDependencies": {
 				"@eslint/compat": "^1.2.5",
@@ -6462,6 +6463,15 @@
 			"dev": true,
 			"license": "MIT"
 		},
+		"node_modules/knuth-shuffle-seeded": {
+			"version": "1.0.6",
+			"resolved": "https://registry.npmjs.org/knuth-shuffle-seeded/-/knuth-shuffle-seeded-1.0.6.tgz",
+			"integrity": "sha512-9pFH0SplrfyKyojCLxZfMcvkhf5hH0d+UwR9nTVJ/DDQJGuzcXjTwB7TP7sDfehSudlGGaOLblmEWqv04ERVWg==",
+			"license": "Apache-2.0",
+			"dependencies": {
+				"seed-random": "~2.2.0"
+			}
+		},
 		"node_modules/lazystream": {
 			"version": "1.0.1",
 			"resolved": "https://registry.npmjs.org/lazystream/-/lazystream-1.0.1.tgz",
@@ -7750,6 +7760,12 @@
 				"node": ">=10"
 			}
 		},
+		"node_modules/seed-random": {
+			"version": "2.2.0",
+			"resolved": "https://registry.npmjs.org/seed-random/-/seed-random-2.2.0.tgz",
+			"integrity": "sha512-34EQV6AAHQGhoc0tn/96a9Fsi6v2xdqe/dMUwljGRaFOzR3EgRmECvD0O8vi8X+/uQ50LGHfkNu/Eue5TPKZkQ==",
+			"license": "MIT"
+		},
 		"node_modules/semver": {
 			"version": "7.7.2",
 			"resolved": "https://registry.npmjs.org/semver/-/semver-7.7.2.tgz",
diff --git a/package.json b/package.json
index 07e784d..642f47b 100644
--- a/package.json
+++ b/package.json
@@ -46,6 +46,7 @@
 		"@sveltejs/adapter-node": "^5.2.13",
 		"chart.js": "^4.5.0",
 		"drizzle-orm": "^0.40.0",
-		"exceljs": "^4.4.0"
+		"exceljs": "^4.4.0",
+		"knuth-shuffle-seeded": "^1.0.6"
 	}
 }
diff --git a/src/routes/participate/+page.server.js b/src/routes/participate/+page.server.js
index 8b7f1f3..6ad2515 100644
--- a/src/routes/participate/+page.server.js
+++ b/src/routes/participate/+page.server.js
@@ -4,6 +4,7 @@ import { inviteLink, participant, audioFile, rating, overallRating } from '$lib/
 import { eq, isNull, and, inArray } from 'drizzle-orm';
 import { parseStoredTags, matchesInviteTags } from '$lib/server/tag-utils.js';
 import { env } from '$env/dynamic/private';
+import shuffle from 'knuth-shuffle-seeded';
 
 export async function load({ url, cookies }) {
 	const token = url.searchParams.get('token');
@@ -81,7 +82,7 @@ export async function load({ url, cookies }) {
 	.from(audioFile)
 	.where(isNull(audioFile.deletedAt)); // Only show active audio files
 
-	const filteredAudio = audioRows
+	const baseAudioList = audioRows
 		.map((audio) => ({
 			data: {
 				id: audio.id,
@@ -96,6 +97,11 @@ export async function load({ url, cookies }) {
 		.filter(({ tags }) => matchesInviteTags(tags, inviteTags))
 		.map(({ data }) => data);
 
+	const shuffleSeed = participantId || token;
+	const filteredAudio = baseAudioList.length > 0
+		? shuffle([...baseAudioList], shuffleSeed)
+		: baseAudioList;
+
 	const allowedAudioIds = filteredAudio.map((file) => file.id);
 
 	const displayContinuousRating = env.DISPLAY_CONT_RATING !== 'false';