/*
 * Minio Client (C) 2014, 2015 Minio, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package main

import (
	"fmt"
	"math"
	"time"
)

// humanizeDuration humanizes time.Duration output to a meaningful value,
// golang's default ``time.Duration`` output is badly formatted and unreadable.
func humanizeDuration(duration time.Duration) string {
	if duration.Seconds() < 60.0 {
		return fmt.Sprintf("%d seconds", int64(duration.Seconds()))
	}
	if duration.Minutes() < 60.0 {
		remainingSeconds := math.Mod(duration.Seconds(), 60)
		return fmt.Sprintf("%d minutes %d seconds", int64(duration.Minutes()), int64(remainingSeconds))
	}
	if duration.Hours() < 24.0 {
		remainingMinutes := math.Mod(duration.Minutes(), 60)
		remainingSeconds := math.Mod(duration.Seconds(), 60)
		return fmt.Sprintf("%d hours %d minutes %d seconds",
			int64(duration.Hours()), int64(remainingMinutes), int64(remainingSeconds))
	}
	remainingHours := math.Mod(duration.Hours(), 24)
	remainingMinutes := math.Mod(duration.Minutes(), 60)
	remainingSeconds := math.Mod(duration.Seconds(), 60)
	return fmt.Sprintf("%d days %d hours %d minutes %d seconds",
		int64(duration.Hours()/24), int64(remainingHours),
		int64(remainingMinutes), int64(remainingSeconds))
}