// +-------------------------------------------------------------------------
// | Copyright (C) 2016 Yunify, Inc.
// +-------------------------------------------------------------------------
// | Licensed under the Apache License, Version 2.0 (the "License");
// | you may not use this work except in compliance with the License.
// | You may obtain a copy of the License in the LICENSE file, or 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 utils

import (
	"time"
)

var layoutMap = map[string]string{
	"RFC 822":  "Mon, 02 Jan 2006 15:04:05 GMT",
	"ISO 8601": "2006-01-02T15:04:05Z",
}

// TimeToString transforms given time to string.
func TimeToString(timeValue time.Time, format string) string {
	return timeValue.UTC().Format(layoutMap[format])
}

// StringToTime transforms given string to time.
func StringToTime(timeString, format string) (time.Time, error) {
	return time.Parse(layoutMap[format], timeString)
}

// StringToUnixInt transforms given string to unix time int.
func StringToUnixInt(timeString, format string) int {
	t, err := StringToTime(timeString, format)
	if err != nil {
		return 0
	}

	return int(t.Unix())
}