using System;

namespace HC
{
    public static class HCTimeTools
    {
        // 获取当前时间戳
        public static long GetCurrentTimestamp()
        {
            return DateTimeOffset.UtcNow.ToUnixTimeSeconds();
        }

        // 获取两个时间戳相差的天数
        public static int GetDaysBetweenTimestamps(long timestamp1, long timestamp2)
        {
            var dateTimeOffset = DateTimeOffset.FromUnixTimeSeconds(timestamp1);
            var dateTime1 = dateTimeOffset.LocalDateTime;
            var dateTimeOffset2 = DateTimeOffset.FromUnixTimeSeconds(timestamp2);
            var dateTime2 = dateTimeOffset2.LocalDateTime;
            var date1 = dateTime1.Date;
            var date2 = dateTime2.Date;
            return (date2 - date1).Days;
        }

        // 格式化时间为指定格式的字符串
        public static string FormatDateTime(long timestamp, string format)
        {
            var dateTimeOffset = DateTimeOffset.FromUnixTimeSeconds(timestamp);
            var dateTime = dateTimeOffset.LocalDateTime;
            var formattedDateTime = dateTime.ToString(format);
            return formattedDateTime;
        }
    }
}