demo/Extensions/DateTimeExtension.cs

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C#
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2024-06-21 16:48:24 +08:00
using System;
namespace antblazorpro {
public static class DateTimeExtension {
private const int Second = 1;
private const int Minute = 60 * Second;
private const int Hour = 60 * Minute;
private const int Day = 24 * Hour;
private const int Month = 30 * Day;
// todo: Need to be localized
public static string ToFriendlyDisplay(this DateTime dateTime) {
var ts = DateTime.Now - dateTime;
var delta = ts.TotalSeconds;
if (delta < 0) {
return "not yet";
}
if (delta < 1 * Minute) {
return ts.Seconds == 1 ? "1 second ago" : ts.Seconds + " seconds ago";
}
if (delta < 2 * Minute) {
return "1 minute ago";
}
if (delta < 45 * Minute) {
return ts.Minutes + "minute";
}
if (delta < 90 * Minute) {
return "1 hour ago";
}
if (delta < 24 * Hour) {
return ts.Hours + " hours ago";
}
if (delta < 48 * Hour) {
return "yesterday";
}
if (delta < 30 * Day) {
return ts.Days + " days ago";
}
if (delta < 12 * Month) {
var months = Convert.ToInt32(Math.Floor((double)ts.Days / 30));
return months <= 1 ? "A month ago" : months + " months ago";
}
else {
var years = Convert.ToInt32(Math.Floor((double)ts.Days / 365));
return years <= 1 ? "a year ago" : years + " years ago";
}
}
}
}