/*******************************************************************************
 * Copyright 2020 huanggefan.cn
 *
 * 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 core

import "time"

const timeLayout = "2006-01-02 15:04:05"

func TimestampToUTCString(timestamp int64) string {
	return time.Unix(timestamp, 0).UTC().Format(timeLayout)
}

func TimestampToUTC8String(timestamp int64) string {
	return time.Unix(timestamp, 0).Format(timeLayout)
}

func UTCStringToTimestamp(str string) (int64, error) {
	t, err := time.Parse(timeLayout, str)
	if err != nil {
		return -1, err
	}
	s := t.Unix()
	return s, nil
}

func UTC8StringToTimestamp(str string) (int64, error) {
	loc,_ := time.LoadLocation("Asia/Shanghai")
	t, err := time.ParseInLocation(timeLayout, str, loc)
	if err != nil {
		return -1, err
	}
	s := t.Unix()
	return s, nil
}