package m3u

import (
	"bytes"
	"fmt"
	"io"
)

type Playlist struct {
	items []*PlaylistItem
}

type PlaylistItem struct {
	Name string
	Path string
	Time int
}

func (p Playlist) WriteTo(w io.Writer) (int64, error) {
	var buf bytes.Buffer
	buf.Write([]byte("#EXTM3U\n"))
	for i, item := range p.items {
		buf.WriteString(fmt.Sprintf("#EXTINF:%d,%s\n%s", item.Time, item.Name, item.Path))
		if i+1 < len(p.items) {
			buf.WriteString("\n")
		}
	}
	return io.Copy(w, &buf)
}

func (p *Playlist) Add(item *PlaylistItem) {
	p.items = append(p.items, item)
}