66 lines
1.4 KiB
Go
66 lines
1.4 KiB
Go
package models
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import (
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"log"
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)
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type Date struct {
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Week int // Set whether the date is all weeks (0), odd weeks (1) or even weeks (2).
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Day int
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Hour int
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Minute int
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}
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// Return the name of the day for a given integer.
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func DayName(day int) string {
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switch day {
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case 0:
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return "Montag"
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case 1:
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return "Dienstag"
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case 2:
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return "Mittwoch"
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case 3:
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return "Donnerstag"
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case 4:
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return "Freitag"
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default:
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log.Printf("No day name found for day %d", day)
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return ""
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}
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}
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// Compare whether first date is strictly before second date.
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func DateLess(first Date, second Date) bool {
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if first.Day < second.Day {
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return true
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} else if first.Day > second.Day {
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return false
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}
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if first.Hour < second.Hour {
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return true
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} else if first.Hour > second.Hour {
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return false
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}
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if first.Minute < second.Minute {
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return true
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} else if first.Minute > second.Minute {
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return false
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}
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return false
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}
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// Get the end date for some duration.
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func GetEndDate(date Date, duration int, ignoreWeek bool) Date {
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var endDate Date
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if ignoreWeek {
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endDate = Date{0, date.Day, date.Hour, date.Minute} // deep copy
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} else {
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endDate = Date{date.Week, date.Day, date.Hour, date.Minute}
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}
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endDate.Day = (endDate.Day + (endDate.Hour*60+endDate.Minute+duration)/(60*24)) % 7
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endDate.Hour = (endDate.Hour + (endDate.Minute+duration)/60) % 24
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endDate.Minute = (endDate.Minute + duration) % 60
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return endDate
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}
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