// This is Free Software under GNU Affero General Public License v >= 3.0
// 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 common

import (
	"archive/zip"
	"strings"
)

// FindInZIP scans a ZIP file directory for a file that ends with
// case insensitive string. Returns only the first match.
func FindInZIP(z *zip.ReadCloser, needle string) *zip.File {
	if z == nil {
		return nil
	}
	needle = strings.ToLower(needle)
	for _, straw := range z.File {
		if strings.HasSuffix(strings.ToLower(straw.Name), needle) {
			return straw
		}
	}
	return nil
}