From 7bf0984698e43b9aa2dd879f65951318ed410390 Mon Sep 17 00:00:00 2001
From: Maze <167211895+mazeincoding@users.noreply.github.com>
Date: Sat, 31 Jan 2026 00:20:04 +0100
Subject: codebase overhaul (#697)

---
 apps/web/src/lib/timeline/bookmarks.ts | 61 ++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 apps/web/src/lib/timeline/bookmarks.ts

(limited to 'apps/web/src/lib/timeline/bookmarks.ts')

diff --git a/apps/web/src/lib/timeline/bookmarks.ts b/apps/web/src/lib/timeline/bookmarks.ts
new file mode 100644
index 00000000..0b06c2f6
--- /dev/null
+++ b/apps/web/src/lib/timeline/bookmarks.ts
@@ -0,0 +1,61 @@
+import { roundToFrame } from "@/lib/time";
+
+export function findBookmarkIndex({
+	bookmarks,
+	frameTime,
+}: {
+	bookmarks: number[];
+	frameTime: number;
+}): number {
+	return bookmarks.findIndex(
+		(bookmark) => Math.abs(bookmark - frameTime) < 0.001,
+	);
+}
+
+export function isBookmarkAtTime({
+	bookmarks,
+	frameTime,
+}: {
+	bookmarks: number[];
+	frameTime: number;
+}): boolean {
+	return bookmarks.some((bookmark) => Math.abs(bookmark - frameTime) < 0.001);
+}
+
+export function toggleBookmarkInArray({
+	bookmarks,
+	frameTime,
+}: {
+	bookmarks: number[];
+	frameTime: number;
+}): number[] {
+	const bookmarkIndex = findBookmarkIndex({ bookmarks, frameTime });
+
+	if (bookmarkIndex !== -1) {
+		return bookmarks.filter((_, i) => i !== bookmarkIndex);
+	}
+
+	return [...bookmarks, frameTime].sort((a, b) => a - b);
+}
+
+export function removeBookmarkFromArray({
+	bookmarks,
+	frameTime,
+}: {
+	bookmarks: number[];
+	frameTime: number;
+}): number[] {
+	return bookmarks.filter(
+		(bookmark) => Math.abs(bookmark - frameTime) >= 0.001,
+	);
+}
+
+export function getFrameTime({
+	time,
+	fps,
+}: {
+	time: number;
+	fps: number;
+}): number {
+	return roundToFrame({ time, fps });
+}
-- 
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