1 files changed, 53 insertions, 0 deletions
diff --git a/src/zenserver/frontend/html/util/friendly.js b/src/zenserver/frontend/html/util/friendly.js
index 5d4586165..f400bbce0 100644
--- a/src/zenserver/frontend/html/util/friendly.js
+++ b/src/zenserver/frontend/html/util/friendly.js
@@ -30,6 +30,59 @@ export class Friendly
 		return Friendly.sep(v * 1000000000, 0) + " ns";
 	}
 
+	/** Format a .NET-style TimeSpan string (e.g. "0:05:23.4560000") as a human-readable duration. */
+	static timespan(value)
+	{
+		if (typeof value === "number")
+		{
+			return Friendly._formatDurationMs(value);
+		}
+
+		const str = String(value);
+		const match = str.match(/^[+-]?(?:(\d+)\.)?(\d+):(\d+):(\d+)(?:\.(\d+))?$/);
+		if (!match)
+		{
+			return str;
+		}
+
+		const days = parseInt(match[1] || "0", 10);
+		const hours = parseInt(match[2], 10);
+		const minutes = parseInt(match[3], 10);
+		const seconds = parseInt(match[4], 10);
+		const frac = match[5] ? parseInt(match[5].substring(0, 3).padEnd(3, "0"), 10) : 0;
+		const totalMs = ((days * 86400 + hours * 3600 + minutes * 60 + seconds) * 1000) + frac;
+
+		return Friendly._formatDurationMs(totalMs);
+	}
+
+	static _formatDurationMs(ms)
+	{
+		const seconds = Math.floor(ms / 1000);
+		const minutes = Math.floor(seconds / 60);
+		const hours = Math.floor(minutes / 60);
+		const days = Math.floor(hours / 24);
+
+		if (days > 0)	return `${days}d ${hours % 24}h ${minutes % 60}m`;
+		if (hours > 0)	return `${hours}h ${minutes % 60}m`;
+		if (minutes > 0) return `${minutes}m ${seconds % 60}s`;
+		if (seconds > 0) return `${seconds}.${String(ms % 1000).padStart(3, "0")}s`;
+		return `${ms}ms`;
+	}
+
+	/** Format an ISO / .NET datetime string as a friendly local date+time. */
+	static datetime(value)
+	{
+		const d = new Date(value);
+		if (isNaN(d.getTime()))
+		{
+			return String(value);
+		}
+		return d.toLocaleString(undefined, {
+			year: "numeric", month: "short", day: "numeric",
+			hour: "2-digit", minute: "2-digit", second: "2-digit",
+		});
+	}
+
 	static bytes(x)
 	{
 		const v = BigInt(Math.trunc(Number(x)));