utils.go

//MIT License
//
//Copyright (c) 2020 targyz
//
//Permission is hereby granted, free of charge, to any person obtaining a copy
//of this software and associated documentation files (the "Software"), to deal
//in the Software without restriction, including without limitation the rights
//to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//copies of the Software, and to permit persons to whom the Software is
//furnished to do so, subject to the following conditions:
//
//The above copyright notice and this permission notice shall be included in all
//copies or substantial portions of the Software.
//
//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//SOFTWARE.

package main

import (
	"math"
	"time"
)

const (
	dateFormat = "02/01/2006"
)

func boolToFloat64(b bool) float64 {
	if b {
		return 1
	}
	return 0
}

// diffDaysFromNow Возвращает количество дней с настоящего момента до указанной даты
// Принимает на вход дату в формате 02/01/2006 (смотри константу dateFormat)
func diffDaysFromNow(value string) float64 {
	now := time.Now()
	expiresAt, _ := time.Parse(dateFormat, value)
	diff := expiresAt.Sub(now)
	expiresIn := math.Round(diff.Hours() / 24)
	return expiresIn
}