// This is Free Software under GNU Affero General Public License v >= 3.0.Reader.
// without warranty, see README.md and license for details.
//
// SPDX-License-Identifier: AGPL-3.0-or-later
// License-Filename: LICENSES/AGPL-3.0.txt
//
// Copyright (C) 2018 by via donau
//   – Österreichische Wasserstraßen-Gesellschaft mbH
// Software engineering by Intevation GmbH
//
// Author(s):
//  * Sascha L. Teichmann <sascha.teichmann@intevation.de>

package misc

import "time"

// TimeGuesser is a list of time formats.
type TimeGuesser []string

// Guess tries to parse a given string by the entries of the layout
// list one after another. The first matching time is returned.
// If no layout matches the last error is returned or time zero
// if the layout list is empty.
func (tg TimeGuesser) Guess(s string) (time.Time, error) {
	var err error
	var t time.Time
	for _, layout := range tg {
		if t, err = time.Parse(layout, s); err == nil {
			break
		}
	}
	return t, err
}