// godlighty -- highly-customizable HTTP, HTTP/2, HTTPS server
// Copyright (C) 2021-2024 Sergey Matveev <stargrave@stargrave.org>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 3 of the License.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package godlighty

import "path"

const OctetStream = "application/octet-stream"

var (
	ContentTypes             = make(map[string]string)
	CompressibleContentTypes = make(map[string]struct{})
)

func mediaType(fn string, overrides map[string]string) string {
	ext := path.Ext(fn)
	if ext == "" {
		ext = fn
	}
	if ct := overrides[ext]; ct != "" {
		return ct
	}
	if ct := ContentTypes[ext]; ct != "" {
		return ct
	}
	if ct := overrides[""]; ct != "" {
		return ct
	}
	return OctetStream
}