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package endpoints
import (
"encoding/json"
"fmt"
"log"
"math/rand"
"net/http"
"os"
audio "physick.ru/culture_exam/Audio"
settings "physick.ru/culture_exam/Settings"
)
type Song struct {
Name string
Duration int
Start int
Meta audio.TrackMeta
}
type SongsList struct {
Songs []Song
}
var cache *SongsList = nil
func (base Song) String() string {
var outp, jsonErr = json.Marshal(base)
if jsonErr != nil {
return fmt.Sprintf("Failed to parse settings: %s", jsonErr.Error())
}
return string(outp)
}
func (base SongsList) String() string {
var outp, jsonErr = json.Marshal(base)
if jsonErr != nil {
return fmt.Sprintf("Failed to parse settings: %s", jsonErr.Error())
}
return string(outp)
}
func getSongs(w http.ResponseWriter, r *http.Request) {
var songsList, err = GetAvaliableSongs()
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
log.Printf("Failed to get files: %v\n", err.Error())
return
}
w.Header().Add("Content-Type", "application/json")
fmt.Fprint(w, songsList)
}
func getRandomSong(w http.ResponseWriter, r *http.Request) {
var songsList, err = GetAvaliableSongs()
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
log.Printf("Failed to get files: %v\n", err.Error())
return
}
var index = rand.Intn(len(songsList.Songs))
w.Header().Add("Content-Type", "application/json")
var outp = songsList.Songs[index]
outp.Start = settings.Current.Distribution.GetDistributedInt(outp.Duration)
fmt.Fprint(w, outp)
}
func GetAvaliableSongs() (SongsList, error) {
if cache != nil {
return *cache, nil
}
var files, dirErr = os.ReadDir(settings.Current.SongsLocation)
if dirErr != nil {
return SongsList{}, dirErr
}
var outp = SongsList {
Songs: make([]Song, 0, len(files)),
}
for i, v := range files {
fmt.Printf("Indexing %d/%d\n", i+1, len(files))
var fullPath = fmt.Sprintf("%s/%s", settings.Current.SongsLocation, v.Name())
var duration, durErr = audio.GetSongDuration(fullPath)
if durErr != nil {
log.Printf("Failed to parse file metadata: File: %s, error: %s\n", fullPath, durErr.Error())
continue
}
var meta, metaErr = audio.GenerateMetadata(v.Name())
if metaErr != nil {
log.Printf("Failed to get metadata from file: %s", metaErr)
continue
}
var song = Song {
Name: v.Name(),
Duration: int(duration.Seconds()),
Meta: meta,
}
outp.Songs = append(outp.Songs, song)
}
cache = &outp
return outp, nil
}
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