add ping command

src/util/general.ts

@@ -25,3 +25,33 @@ export async function promptForInput(prompt: string): Promise<string> {
     });
   });
 }
+
+export function calculateSecondsBetween(
+  start: number,
+  end: number,
+): { seconds: number; toReadable: () => string } {
+  const seconds = (end - start) / 1000;
+  return {
+    seconds,
+    toReadable: () => secondsToReadable(seconds),
+  };
+}
+
+export function secondsToReadable(secs: number): string {
+  var days = Math.floor(secs / (3600 * 24));
+  var hours = Math.floor((secs % (3600 * 24)) / 3600);
+  var minutes = Math.floor((secs % 3600) / 60);
+  var seconds = Math.floor(secs % 60);
+
+  var dayDisplay = days > 0 ? days + (days === 1 ? " day, " : " days, ") : "";
+  var hourDisplay =
+    hours > 0 ? hours + (hours === 1 ? " hour, " : " hours, ") : "";
+  var minuteDisplay =
+    minutes > 0 ? minutes + (minutes === 1 ? " minute, " : " minutes, ") : "";
+  var secondDisplay =
+    seconds > 0 ? seconds + (seconds === 1 ? " second" : " seconds") : "";
+  return (dayDisplay + hourDisplay + minuteDisplay + secondDisplay).replace(
+    /,\s*$/,
+    "",
+  );
+}