/*
godlighty -- highly-customizable HTTP, HTTP/2, HTTPS server
Copyright (C) 2021-2023 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
}