package m3u8

import (
	"bytes"
	"context"
	"io/ioutil"
	"sync"
)

var (
	cacheEnkey   []byte
	cacheTvEnkey []byte
	initOnce     sync.Once
)

// 安全初始化 m3u8 key
func init() {
	initOnce.Do(func() {
		if len(cacheEnkey) == 0 {
			data, err := ioutil.ReadFile("conf/m3u8.key")
			if err != nil {
				panic(err)
			}
			cacheEnkey = data
		}
	})

}

// Enkey 密匙key
func Enkey(ctx context.Context) (buffer *bytes.Buffer, err error) {
	buffer = bytes.NewBuffer(cacheEnkey)
	return
}