package bx

import (
	"bytes"
	"encoding/binary"
)

type CmdDeleteFile struct {
	baseBxCmd
	files []string
}

func NewCmdDeleteFile(files []string) CmdDeleteFile {
	return CmdDeleteFile{
		baseBxCmd: newBaseCmd(CMD_DEL_FILE.group, CMD_DEL_FILE.code),
		files:     files,
	}
}

func (cmd CmdDeleteFile) Build() []byte {
	w := bytes.NewBuffer(make([]byte, 0, 1024))
	binary.Write(w, binary.LittleEndian, cmd.Group())
	binary.Write(w, binary.LittleEndian, cmd.Cmd())
	binary.Write(w, binary.LittleEndian, cmd.ReqResp())
	binary.Write(w, binary.LittleEndian, []byte{0x00, 0x00})
	l := uint16(len(cmd.files))
	if l != 0 {
		binary.Write(w, binary.LittleEndian, l)
		for _, v := range cmd.files {
			binary.Write(w, binary.BigEndian, []byte(v))
		}
		return w.Bytes()
	}
	binary.Write(w, binary.LittleEndian, []byte{0x00})
	return w.Bytes()
}