Added game file size

frontend/src/app/components/game-detail-view/game-detail-view.component.ts

@@ -34,8 +34,28 @@ export class GameDetailViewComponent implements OnInit {
   ngOnInit(): void {
   }
 
-  downloadGame(): void {
+  public downloadGame(): void {
     this.gamesService.downloadGame(this.game.slug);
   }
 
+  public bytesAsHumanReadableString(bytes: number): string {
+    const thresh = 1024;
+
+    if (Math.abs(bytes) < thresh) {
+      return bytes + ' B';
+    }
+
+    const units = ['kB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
+    const dp = 1;
+    let u = -1;
+    const r = 10**dp;
+
+    do {
+      bytes /= thresh;
+      ++u;
+    } while (Math.round(Math.abs(bytes) * r) / r >= thresh && u < units.length - 1);
+
+    return bytes.toFixed(dp) + ' ' + units[u];
+  }
+
 }