package tools

import (
	"time"
)

// 计算时间差值

func RemainingTimeUntilNextFriday17() time.Duration {
	// 获取当前时间
	now := time.Now()

	// 计算下一个周五的时间
	nextFriday := now.AddDate(0, 0, (int(time.Friday)-int(now.Weekday())+7)%7)

	// 如果今天是周五，则直接返回距离今天17点的时间
	if now.Weekday() == time.Friday {
		today17 := time.Date(now.Year(), now.Month(), now.Day(), 17, 0, 0, 0, now.Location())
		return today17.Sub(now)
	}

	// 构造下一个周五 17 点的时间
	nextFriday17 := time.Date(nextFriday.Year(), nextFriday.Month(), nextFriday.Day(), 17, 0, 0, 0, nextFriday.Location())

	// 计算时间差
	duration := nextFriday17.Sub(now)

	return duration
}