package filesys

import (
	"bazil.org/fuse/fs"
	"bazil.org/fuse"
	"context"
	"os"
	"fmt"
	"path"
	"github.com/chrislusf/seaweedfs/weed/filer"
)

type Dir struct {
	Path string
	wfs  *WFS
}

func (dir *Dir) Attr(context context.Context, attr *fuse.Attr) error {
	attr.Mode = os.ModeDir | 0555
	return nil
}

func (dir *Dir) Lookup(ctx context.Context, name string) (fs.Node, error) {
	if entry, err := filer.LookupDirectoryEntry(dir.wfs.filer, dir.Path, name); err == nil {
		if !entry.Found {
			return nil, fuse.ENOENT
		}
		if entry.FileId != "" {
			return &File{FileId: filer.FileId(entry.FileId), Name: name, wfs: dir.wfs}, nil
		} else {
			return &Dir{Path: path.Join(dir.Path, name), wfs: dir.wfs}, nil
		}
	}

	return nil, fuse.ENOENT
}

func (dir *Dir) ReadDirAll(ctx context.Context) ([]fuse.Dirent, error) {
	var ret []fuse.Dirent
	if dirs, e := filer.ListDirectories(dir.wfs.filer, dir.Path); e == nil {
		for _, d := range dirs.Directories {
			dirent := fuse.Dirent{Name: string(d), Type: fuse.DT_Dir}
			ret = append(ret, dirent)
		}
	}
	if files, e := filer.ListFiles(dir.wfs.filer, dir.Path, ""); e == nil {
		for _, f := range files.Files {
			dirent := fuse.Dirent{Name: f.Name, Type: fuse.DT_File}
			ret = append(ret, dirent)
		}
	}
	return ret, nil
}

func (dir *Dir) Remove(ctx context.Context, req *fuse.RemoveRequest) error {
	name := path.Join(dir.Path, req.Name)
	err := filer.DeleteDirectoryOrFile(dir.wfs.filer, name, req.Dir)
	if err != nil {
		fmt.Printf("Delete file %s [ERROR] %s\n", name, err)
	}
	return err
}