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// Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause
package driveimpl
import (
"context"
"io/fs"
"os"
"time"
"github.com/djherbis/times"
"github.com/tailscale/xnet/webdav"
)
// birthTimingFS extends a webdav.FileSystem to return FileInfos that implement
// the webdav.BirthTimer interface.
type birthTimingFS struct {
webdav.FileSystem
}
func (fs *birthTimingFS) Stat(ctx context.Context, name string) (os.FileInfo, error) {
fi, err := fs.FileSystem.Stat(ctx, name)
if err != nil {
return nil, err
}
return &birthTimingFileInfo{fi}, nil
}
func (fs *birthTimingFS) OpenFile(ctx context.Context, name string, flag int, perm os.FileMode) (webdav.File, error) {
f, err := fs.FileSystem.OpenFile(ctx, name, flag, perm)
if err != nil {
return nil, err
}
return &birthTimingFile{f}, nil
}
// birthTimingFileInfo extends an os.FileInfo to implement the BirthTimer
// interface.
type birthTimingFileInfo struct {
os.FileInfo
}
func (fi *birthTimingFileInfo) BirthTime(ctx context.Context) (time.Time, error) {
if fi.Sys() == nil {
return time.Time{}, webdav.ErrNotImplemented
}
if !times.HasBirthTime {
return time.Time{}, webdav.ErrNotImplemented
}
return times.Get(fi.FileInfo).BirthTime(), nil
}
// birthTimingFile extends a webdav.File to return FileInfos that implement the
// BirthTimer interface.
type birthTimingFile struct {
webdav.File
}
func (f *birthTimingFile) Stat() (fs.FileInfo, error) {
fi, err := f.File.Stat()
if err != nil {
return nil, err
}
return &birthTimingFileInfo{fi}, nil
}
func (f *birthTimingFile) Readdir(count int) ([]fs.FileInfo, error) {
fis, err := f.File.Readdir(count)
if err != nil {
return nil, err
}
for i, fi := range fis {
fis[i] = &birthTimingFileInfo{fi}
}
return fis, nil
}
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