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package server
import "time"
// RenewButtonTime returns the time when the renew button should be shown for the server
// Implemented according to: https://github.com/eduvpn/documentation/blob/cdf4d054f7652d74e4192494e8bb0e21040e46ac/API.md#session-expiry
func RenewButtonTime(st time.Time, et time.Time) int64 {
d := et.Sub(st)
// If the time is less than 24 hours (a day left), show it when 30 minutes have passed or on expired if less than 30 minutes
dayl := time.Duration(24 * time.Hour)
if d < dayl {
// Get the minimum time to add, 30 minutes or on expired
m := time.Duration(30 * time.Minute)
// The total delta time is larger, return that we should show the button after 30 minutes
if d > m {
return st.Add(30 * time.Minute).Unix()
}
// Just show it on expired
return st.Add(d).Unix()
}
// Else just show it when 24 hours is left
// This is the delta minus 24 hours left as that's how long it takes for a day to be left in the expiry
// We thus add this to the start time
tillDay := d - dayl
t := st.Add(tillDay)
return t.Unix()
}
func CountdownTime(st time.Time, et time.Time) int64 {
d := et.Sub(st)
dayl := time.Duration(24 * time.Hour)
// This is just the last 24 hours
// if less than or equal to 24 hours, immediately
if d <= dayl {
return st.Unix()
}
tillDay := d - dayl
t := st.Add(tillDay)
return t.Unix()
}
func NotificationTimes(st time.Time, et time.Time) []int64 {
last := []time.Duration{
time.Duration(0),
time.Duration(1 * time.Hour),
time.Duration(2 * time.Hour),
time.Duration(4 * time.Hour),
}
var t []int64
d := et.Sub(st)
for _, l := range last {
// If the notification remaining time is more than the total delta, continue
if l > d {
continue
}
// calculating the time till a notification must happen
tillN := d - l
// Get absolute time when this notification must be shown by adding the delta
c := st.Add(tillN)
t = append(t, c.Unix())
}
return t
}
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