package main

import (
	"bytes"
	"encoding/binary"
	"fmt"
	"io"
	"os"

	lame "github.com/sunicy/go-lame"
)

func PcmToMp3(audioBuffer *bytes.Buffer, mp3FileName string) {
	mp3File, _ := os.OpenFile(mp3FileName, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0755)
	defer mp3File.Close()
	wr, err := lame.NewWriter(mp3File)
	if err != nil {
		panic("cannot create lame writer, err: " + err.Error())

	}
	wr.InSampleRate = 48000       // input sample rate
	wr.InNumChannels = 1          // number of channels: 1
	wr.OutMode = lame.MODE_STEREO // common, 2 channels
	wr.OutQuality = 0             // 0: highest; 9: lowest
	wr.OutSampleRate = 44100      // output sample rate
	io.Copy(wr, audioBuffer)
	wr.Close()
}

func bufWriter(stuff []byte) {
	buf := new(bytes.Buffer)
	err := binary.Write(buf, binary.LittleEndian, stuff)
	if err != nil {
		fmt.Println("binary.Write failed:", err)
	}
	fmt.Printf("% x", buf.Bytes())
}