// Copyright 2026 Rose Hogenson <r@roseh.moe>
//
// This file is part of ccp.
//
// Ccp 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, either version 3 of the License, or (at your option) any later
// version.
//
// Ccp 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
// ccp. If not, see <https://www.gnu.org/licenses/>.

// Package osfs implements [wfs.FS] backed by the local filesystem.
package osfs

import (
	"io"
	"io/fs"
	"os"

	"roseh.moe/cmd/ccp/internal/wfs"
)

var (
	_ wfs.FS          = FS{}
	_ wfs.MkdirModeFS = FS{}
	_ wfs.ReadLinkFS  = FS{}
	_ fs.StatFS       = FS{}
)

// An FS is a [wfs.FS] backed by the local filesystem.
type FS struct{}

func (FS) Open(name string) (fs.File, error) {
	return os.Open(name)
}

func (FS) Stat(name string) (fs.FileInfo, error) {
	return os.Stat(name)
}

func (FS) Lstat(name string) (fs.FileInfo, error) {
	return os.Lstat(name)
}

func (FS) ReadLink(name string) (string, error) {
	return os.Readlink(name)
}

func (FS) Create(name string, perm fs.FileMode) (io.WriteCloser, error) {
	return os.OpenFile(name, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, perm)
}

func (FS) Remove(name string) error {
	return os.Remove(name)
}

func (FS) Mkdir(name string) error {
	return os.Mkdir(name, 0700)
}

func (FS) MkdirMode(name string, mode fs.FileMode) error {
	return os.Mkdir(name, mode)
}

func (FS) Symlink(oldname, newname string) error {
	return os.Symlink(oldname, newname)
}

func (FS) Chmod(name string, mode fs.FileMode) error {
	return os.Chmod(name, mode)
}