tuna-timer/tuna-timer-api

package utils

import (
    "fmt"
    "time"
)

// FormatDuration formats duration to be like HH:MMh regardless of days, months etc
func FormatDuration(d time.Duration) string {
    if d.Minutes() == 0 {
        return "0:00"
    }

    minutes := int(d.Minutes()) % 60
    hours := int(d.Hours())
    return fmt.Sprintf("%.1d:%.2d", hours, minutes)
}