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package main
import (
"fmt"
"github.com/dhowden/tag"
"muhq.space/go/wrms/llog"
"os"
"path"
"path/filepath"
"strings"
"sync"
)
type LocalBackend struct {
musicDir string
lock sync.RWMutex
songs map[string]*Song
}
func NewLocalBackend(musicDir string) *LocalBackend {
b := LocalBackend{musicDir, sync.RWMutex{}, map[string]*Song{}}
go b.findSongs()
return &b
}
func (b *LocalBackend) insert(song *Song) {
b.lock.Lock()
defer b.lock.Unlock()
b.songs[song.Uri] = song
}
func (b *LocalBackend) findSongs() {
llog.Debug(fmt.Sprintf("Starting song search under: %s", b.musicDir))
// Insert some Songs
song := NewSong("No!", "Bukahara", "local", "Bukahara/Phantasma/01-No!.ogg")
for _, s := range []*Song{&song} {
b.insert(s)
}
err := filepath.Walk(b.musicDir, func(p string, finfo os.FileInfo, err error) error {
if err != nil {
llog.Warning(fmt.Sprintf("error %v at path %s\n", err, p))
return err
}
if !finfo.Mode().IsRegular() {
return nil
}
ext := strings.ToLower(path.Ext(p))
for _, excluded := range []string{".png", ".jpg", ".txt", ".pdf", ".m3u"} {
if ext == excluded {
return nil
}
}
f, err := os.Open(p)
defer f.Close()
if err != nil {
llog.Warning(fmt.Sprintf("error %v opening file %s", err, p))
return err
}
m, err := tag.ReadFrom(f)
if err != nil {
llog.Warning(fmt.Sprintf("error reading tags from %s: %v", p, err))
// Contiune walking
return nil
}
s := NewSong(m.Title(), m.Artist(), "local", p)
b.insert(&s)
return nil
})
if err != nil {
llog.Error(fmt.Sprintf("error walking the path %q: %v", b.musicDir, err))
}
}
func (b *LocalBackend) Play(song *Song, player *Player) {
player.PlayUri("file://" + song.Uri)
}
func (b *LocalBackend) Search(keyword string) []Song {
pattern := strings.ToLower(keyword)
results := []Song{}
b.lock.RLock()
defer b.lock.RUnlock()
for _, s := range b.songs {
if strings.Contains(strings.ToLower(s.Title), pattern) ||
strings.Contains(strings.ToLower(s.Artist), pattern) {
results = append(results, *s)
}
}
return results
}
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