From f15508df62ca407522de448f21711c0711601c91 Mon Sep 17 00:00:00 2001
From: Maze Winther <mazewinther@gmail.com>
Date: Wed, 30 Jul 2025 17:44:19 +0200
Subject: feat: make timestamp editable

---
 apps/web/src/lib/time.ts | 93 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 93 insertions(+)

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

diff --git a/apps/web/src/lib/time.ts b/apps/web/src/lib/time.ts
index df02d837..f24c5961 100644
--- a/apps/web/src/lib/time.ts
+++ b/apps/web/src/lib/time.ts
@@ -23,3 +23,96 @@ export const formatTimeCode = (
       return `${hours.toString().padStart(2, "0")}:${minutes.toString().padStart(2, "0")}:${seconds.toString().padStart(2, "0")}:${frames.toString().padStart(2, "0")}`;
   }
 };
+
+export const parseTimeCode = (
+  timeCode: string,
+  format: "MM:SS" | "HH:MM:SS" | "HH:MM:SS:CS" | "HH:MM:SS:FF" = "HH:MM:SS:CS",
+  fps = 30
+): number | null => {
+  if (!timeCode || typeof timeCode !== "string") return null;
+
+  // Remove any extra whitespace
+  const cleanTimeCode = timeCode.trim();
+
+  try {
+    switch (format) {
+      case "MM:SS": {
+        const parts = cleanTimeCode.split(":");
+        if (parts.length !== 2) return null;
+        const [minutes, seconds] = parts.map((part) => parseInt(part, 10));
+        if (isNaN(minutes) || isNaN(seconds)) return null;
+        if (minutes < 0 || seconds < 0 || seconds >= 60) return null;
+        return minutes * 60 + seconds;
+      }
+
+      case "HH:MM:SS": {
+        const parts = cleanTimeCode.split(":");
+        if (parts.length !== 3) return null;
+        const [hours, minutes, seconds] = parts.map((part) =>
+          parseInt(part, 10)
+        );
+        if (isNaN(hours) || isNaN(minutes) || isNaN(seconds)) return null;
+        if (
+          hours < 0 ||
+          minutes < 0 ||
+          seconds < 0 ||
+          minutes >= 60 ||
+          seconds >= 60
+        )
+          return null;
+        return hours * 3600 + minutes * 60 + seconds;
+      }
+
+      case "HH:MM:SS:CS": {
+        const parts = cleanTimeCode.split(":");
+        if (parts.length !== 4) return null;
+        const [hours, minutes, seconds, centiseconds] = parts.map((part) =>
+          parseInt(part, 10)
+        );
+        if (
+          isNaN(hours) ||
+          isNaN(minutes) ||
+          isNaN(seconds) ||
+          isNaN(centiseconds)
+        )
+          return null;
+        if (
+          hours < 0 ||
+          minutes < 0 ||
+          seconds < 0 ||
+          centiseconds < 0 ||
+          minutes >= 60 ||
+          seconds >= 60 ||
+          centiseconds >= 100
+        )
+          return null;
+        return hours * 3600 + minutes * 60 + seconds + centiseconds / 100;
+      }
+
+      case "HH:MM:SS:FF": {
+        const parts = cleanTimeCode.split(":");
+        if (parts.length !== 4) return null;
+        const [hours, minutes, seconds, frames] = parts.map((part) =>
+          parseInt(part, 10)
+        );
+        if (isNaN(hours) || isNaN(minutes) || isNaN(seconds) || isNaN(frames))
+          return null;
+        if (
+          hours < 0 ||
+          minutes < 0 ||
+          seconds < 0 ||
+          frames < 0 ||
+          minutes >= 60 ||
+          seconds >= 60 ||
+          frames >= fps
+        )
+          return null;
+        return hours * 3600 + minutes * 60 + seconds + frames / fps;
+      }
+    }
+  } catch {
+    return null;
+  }
+
+  return null;
+};
-- 
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