package zfs

import (
	"os"
	"time"

	"bazil.org/fuse"
	"bazil.org/fuse/fs"
	"github.com/debridmediamanager.com/zurg/internal/config"
	"github.com/debridmediamanager.com/zurg/internal/torrent"
	"github.com/debridmediamanager.com/zurg/pkg/chunk"
	"github.com/debridmediamanager.com/zurg/pkg/logutil"

	"golang.org/x/sys/unix"
)

func Mount(mountpoint string, cfg config.ConfigInterface, tMgr *torrent.TorrentManager, cMgr *chunk.Manager) error {
	rlog := logutil.NewLogger()
	log := rlog.Named("zfs")

	options := []fuse.MountOption{
		fuse.AllowOther(),
		fuse.AllowNonEmptyMount(),
		fuse.MaxReadahead(uint32(128 << 10)),
		fuse.DefaultPermissions(),
		fuse.FSName("zurgfs"),
	}
	conn, err := fuse.Mount(mountpoint, options...)
	if err != nil {
		return err
	}
	defer conn.Close()

	srv := fs.New(conn, nil)

	filesys := &FS{
		uid:      uint32(unix.Geteuid()),
		gid:      uint32(unix.Getegid()),
		umask:    os.FileMode(0),
		c:        cfg,
		t:        tMgr,
		log:      log,
		initTime: time.Now(),
		chunk:    cMgr,
	}

	if err := srv.Serve(filesys); err != nil {
		return err
	}

	return nil
}

func Unmount(mountpoint string) error {
	fuse.Unmount(mountpoint)
	return nil
}