package utils

import "time"

// TimeToMilliseconds 时间转毫秒时间戳
func TimeToMilliseconds(t time.Time) int64 {
	return t.UnixNano() / 1e6
}

// DateToMilliseconds 日期转毫秒时间戳（00:00:00）
func DateToMilliseconds(year, month, day int) int64 {
	t := time.Date(year, time.Month(month), day, 0, 0, 0, 0, time.Local)
	return TimeToMilliseconds(t)
}

// TodayMilliseconds 获取今天的时间戳范围
func TodayMilliseconds() (int64, int64) {
	now := time.Now()
	start := time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, now.Location())
	end := start.AddDate(0, 0, 1).Add(-time.Second)
	return TimeToMilliseconds(start), TimeToMilliseconds(end)
}

// YesterdayMilliseconds 获取昨天的时间戳范围
func YesterdayMilliseconds() (int64, int64) {
	now := time.Now()
	yesterday := now.AddDate(0, 0, -1)
	start := time.Date(yesterday.Year(), yesterday.Month(), yesterday.Day(), 0, 0, 0, 0, yesterday.Location())
	end := start.AddDate(0, 0, 1).Add(-time.Second)
	return TimeToMilliseconds(start), TimeToMilliseconds(end)
}

// Last7DaysMilliseconds 获取过去7天的时间戳范围
func Last7DaysMilliseconds() (int64, int64) {
	now := time.Now()
	end := time.Date(now.Year(), now.Month(), now.Day(), 23, 59, 59, 0, now.Location())
	start := end.AddDate(0, 0, -7)
	return TimeToMilliseconds(start), TimeToMilliseconds(end)
}