refactor(frontend): remove dead code

frontend/src/utils/utils.ts

@@ -2,76 +2,34 @@ function formatTime(seconds: number): string {
     const h = Math.floor(seconds / 3600);
     const m = Math.floor((seconds % 3600) / 60);
     const s = Math.floor(seconds % 60);
-
-    const padded = (n: number) => n.toString().padStart(2, '0');
-
-    if (h > 0) {
-        return `${h}:${padded(m)}:${padded(s)}`;
-    } else {
-        return `${m}:${padded(s)}`;
-    }
+    const pad = (n: number) => n.toString().padStart(2, '0');
+    if (h > 0) return `${h}:${pad(m)}:${pad(s)}`;
+    return `${m}:${pad(s)}`;
 }
 
 function stringToDate(dateString: string): Date {
-    const validIso = dateString.substring(0, 23);
-    const date = new Date(validIso);
-    if (isNaN(date.getTime())) {
-        throw new Error("Invalid date string");
-    }
+    const date = new Date(dateString.substring(0, 23));
+    if (isNaN(date.getTime())) throw new Error("Invalid date string");
     return date;
 }
 
 function dateToTimeAgo(date: Date): string {
-    const now = new Date();
-    const secondsAgo = Math.floor((now.getTime() - date.getTime()) / 1000);
-
-    if (secondsAgo < 60) {
-        return `${secondsAgo} seconds ago`;
-    } else if (secondsAgo < 3600) {
-        const minutes = Math.floor(secondsAgo / 60);
-
-        if (minutes === 1) {
-            return "1 minute ago";
+    const secondsAgo = Math.floor((Date.now() - date.getTime()) / 1000);
+    const units: [number, string][] = [
+        [31536000, 'year'],
+        [2592000, 'month'],
+        [86400, 'day'],
+        [3600, 'hour'],
+        [60, 'minute'],
+    ];
+    for (const [threshold, unit] of units) {
+        if (secondsAgo >= threshold) {
+            const count = Math.floor(secondsAgo / threshold);
+            return `${count} ${unit}${count !== 1 ? 's' : ''} ago`;
         }
-
-        return `${minutes} minutes ago`;
-    } else if (secondsAgo < 86400) {
-        const hours = Math.floor(secondsAgo / 3600);
-
-        if (hours === 1) {
-            return "1 hour ago";
-        }
-
-        return `${hours} hours ago`;
-    } else if (secondsAgo < 2592000) {
-        const days = Math.floor(secondsAgo / 86400);
-
-        if (days === 1) {
-            return "1 day ago";
-        }
-
-        return `${days} days ago`;
-    } else if (secondsAgo < 31536000) {
-        const months = Math.floor(secondsAgo / 2592000);
-
-        if (months === 1) {
-            return "1 month ago";
-        }
-
-        return `${months} months ago`;
-    } else {
-        const years = Math.floor(secondsAgo / 31536000);
-
-        if (years === 1) {
-            return "1 year ago";
-        }
-
-        return `${years} years ago`;
     }
+    const s = Math.max(0, secondsAgo);
+    return `${s} second${s !== 1 ? 's' : ''} ago`;
 }
 
-export {
-    formatTime,
-    stringToDate,
-    dateToTimeAgo
-}
+export { formatTime, stringToDate, dateToTimeAgo };