mirror of
https://github.com/cgzirim/seek-tune.git
synced 2025-12-17 17:04:22 +00:00
326 lines
9.1 KiB
Go
326 lines
9.1 KiB
Go
package main
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import (
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"context"
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"encoding/base64"
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"encoding/json"
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"fmt"
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"log"
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"log/slog"
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"net/http"
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"song-recognition/shazam"
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"song-recognition/spotify"
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"song-recognition/utils"
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"song-recognition/wav"
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"strings"
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"github.com/gin-gonic/gin"
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"github.com/mdobak/go-xerrors"
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socketio "github.com/googollee/go-socket.io"
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)
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const (
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SONGS_DIR = "songs"
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)
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func GinMiddleware(allowOrigin string) gin.HandlerFunc {
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return func(c *gin.Context) {
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c.Writer.Header().Set("Access-Control-Allow-Origin", allowOrigin)
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c.Writer.Header().Set("Access-Control-Allow-Credentials", "true")
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c.Writer.Header().Set("Access-Control-Allow-Methods", "POST, OPTIONS, GET, PUT, DELETE")
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c.Writer.Header().Set("Access-Control-Allow-Headers", "Accept, Authorization, Content-Type, Content-Length, X-CSRF-Token, Token, session, Origin, Host, Connection, Accept-Encoding, Accept-Language, X-Requested-With")
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if c.Request.Method == http.MethodOptions {
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c.AbortWithStatus(http.StatusNoContent)
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return
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}
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c.Request.Header.Del("Origin")
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c.Next()
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}
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}
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func downloadStatus(statusType, message string) string {
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data := map[string]interface{}{"type": statusType, "message": message}
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jsonData, err := json.Marshal(data)
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if err != nil {
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logger := utils.GetLogger()
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ctx := context.Background()
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err := xerrors.New(err)
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logger.ErrorContext(ctx, "failed to marshal data.", slog.Any("error", err))
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return ""
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}
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return string(jsonData)
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}
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type RecordData struct {
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Audio string `json:"audio"`
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Channels int `json:"channels"`
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SampleRate int `json:"sampleRate"`
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SampleSize int `json:"sampleSize"`
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}
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func main() {
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router := gin.New()
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server := socketio.NewServer(nil)
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logger := utils.GetLogger()
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ctx := context.Background()
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server.OnConnect("/", func(socket socketio.Conn) error {
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socket.SetContext("")
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log.Println("CONNECTED: ", socket.ID())
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return nil
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})
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err := spotify.CreateFolder(SONGS_DIR)
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if err != nil {
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err := xerrors.New(err)
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logMsg := fmt.Sprintf("failed to create directory %v", SONGS_DIR)
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logger.ErrorContext(ctx, logMsg, slog.Any("error", err))
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}
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server.OnEvent("/", "totalSongs", func(socket socketio.Conn) {
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db, err := utils.NewDbClient()
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if err != nil {
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err := xerrors.New(err)
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logger.ErrorContext(ctx, "error connecting to DB", slog.Any("error", err))
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return
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}
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defer db.Close()
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totalSongs, err := db.TotalSongs()
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if err != nil {
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err := xerrors.New(err)
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logger.ErrorContext(ctx, "Log error getting total songs", slog.Any("error", err))
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return
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}
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socket.Emit("totalSongs", totalSongs)
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})
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server.OnEvent("/", "newDownload", func(socket socketio.Conn, spotifyURL string) {
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if len(spotifyURL) == 0 {
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logger.Debug("Spotify URL required.")
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return
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}
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splitURL := strings.Split(spotifyURL, "/")
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if len(splitURL) < 2 {
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logger.Debug("invalid Spotify URL.")
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return
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}
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spotifyID := splitURL[len(splitURL)-1]
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if strings.Contains(spotifyID, "?") {
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spotifyID = strings.Split(spotifyID, "?")[0]
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}
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// Handle album download
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if strings.Contains(spotifyURL, "album") {
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tracksInAlbum, err := spotify.AlbumInfo(spotifyURL)
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if err != nil {
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fmt.Println("log error: ", err)
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if len(err.Error()) <= 25 {
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socket.Emit("downloadStatus", downloadStatus("error", err.Error()))
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logger.Info(err.Error())
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} else {
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err := xerrors.New(err)
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logger.ErrorContext(ctx, "error getting album info", slog.Any("error", err))
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}
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return
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}
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statusMsg := fmt.Sprintf("%v songs found in album.", len(tracksInAlbum))
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socket.Emit("downloadStatus", downloadStatus("info", statusMsg))
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totalTracksDownloaded, err := spotify.DlAlbum(spotifyURL, SONGS_DIR)
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if err != nil {
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socket.Emit("downloadStatus", downloadStatus("error", "Couldn't to download album."))
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err := xerrors.New(err)
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logger.ErrorContext(ctx, "failed to download album.", slog.Any("error", err))
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return
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}
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statusMsg = fmt.Sprintf("%d songs downloaded from album", totalTracksDownloaded)
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socket.Emit("downloadStatus", downloadStatus("success", statusMsg))
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}
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// Handle playlist download
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if strings.Contains(spotifyURL, "playlist") {
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tracksInPL, err := spotify.PlaylistInfo(spotifyURL)
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if err != nil {
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if len(err.Error()) <= 25 {
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socket.Emit("downloadStatus", downloadStatus("error", err.Error()))
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logger.Info(err.Error())
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} else {
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err := xerrors.New(err)
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logger.ErrorContext(ctx, "error getting album info", slog.Any("error", err))
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}
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return
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}
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statusMsg := fmt.Sprintf("%v songs found in playlist.", len(tracksInPL))
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socket.Emit("downloadStatus", downloadStatus("info", statusMsg))
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totalTracksDownloaded, err := spotify.DlPlaylist(spotifyURL, SONGS_DIR)
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if err != nil {
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socket.Emit("downloadStatus", downloadStatus("error", "Couldn't download playlist."))
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err := xerrors.New(err)
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logger.ErrorContext(ctx, "failed to download playlist.", slog.Any("error", err))
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return
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}
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statusMsg = fmt.Sprintf("%d songs downloaded from playlist.", totalTracksDownloaded)
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socket.Emit("downloadStatus", downloadStatus("success", statusMsg))
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}
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// Handle track download
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if strings.Contains(spotifyURL, "track") {
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trackInfo, err := spotify.TrackInfo(spotifyURL)
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if err != nil {
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if len(err.Error()) <= 25 {
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socket.Emit("downloadStatus", downloadStatus("error", err.Error()))
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logger.Info(err.Error())
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} else {
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err := xerrors.New(err)
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logger.ErrorContext(ctx, "error getting album info", slog.Any("error", err))
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}
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return
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}
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// check if track already exist
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db, err := utils.NewDbClient()
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if err != nil {
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fmt.Errorf("Log - error connecting to DB: %d", err)
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}
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defer db.Close()
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song, songExists, err := db.GetSongByKey(utils.GenerateSongKey(trackInfo.Title, trackInfo.Artist))
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if err == nil {
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if songExists {
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statusMsg := fmt.Sprintf(
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"'%s' by '%s' already exists in the database (https://www.youtube.com/watch?v=%s)",
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song.Title, song.Artist, song.YouTubeID)
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socket.Emit("downloadStatus", downloadStatus("error", statusMsg))
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return
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}
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} else {
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err := xerrors.New(err)
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logger.ErrorContext(ctx, "failed to get song by key.", slog.Any("error", err))
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}
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totalDownloads, err := spotify.DlSingleTrack(spotifyURL, SONGS_DIR)
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if err != nil {
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if len(err.Error()) <= 25 {
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socket.Emit("downloadStatus", downloadStatus("error", err.Error()))
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logger.Info(err.Error())
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} else {
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err := xerrors.New(err)
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logger.ErrorContext(ctx, "error getting album info", slog.Any("error", err))
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}
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return
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}
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statusMsg := ""
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if totalDownloads != 1 {
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statusMsg = fmt.Sprintf("'%s' by '%s' failed to download", trackInfo.Title, trackInfo.Artist)
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socket.Emit("downloadStatus", downloadStatus("error", statusMsg))
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} else {
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statusMsg = fmt.Sprintf("'%s' by '%s' was downloaded", trackInfo.Title, trackInfo.Artist)
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socket.Emit("downloadStatus", downloadStatus("success", statusMsg))
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}
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}
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return
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})
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server.OnEvent("/", "record", func(socket socketio.Conn, recordData string) {
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var recData RecordData
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if err := json.Unmarshal([]byte(recordData), &recData); err != nil {
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err := xerrors.New(err)
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logger.ErrorContext(ctx, "Failed to unmarshal record data.", slog.Any("error", err))
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return
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}
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// Decode base64 data
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decodedAudioData, err := base64.StdEncoding.DecodeString(recData.Audio)
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if err != nil {
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err := xerrors.New(err)
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logger.ErrorContext(ctx, "failed to decode base64 data.", slog.Any("error", err))
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return
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}
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// Save the decoded data to a file
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channels := recData.Channels
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sampleRate := recData.SampleRate
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bitsPerSample := recData.SampleSize
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fmt.Println(channels, sampleRate, bitsPerSample)
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err = wav.WriteWavFile("blob.wav", decodedAudioData, sampleRate, channels, bitsPerSample)
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if err != nil {
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err := xerrors.New(err)
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logger.ErrorContext(ctx, "failed to write wav file.", slog.Any("error", err))
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}
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samples, err := wav.WavBytesToSamples(decodedAudioData)
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if err != nil {
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err := xerrors.New(err)
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logger.ErrorContext(ctx, "failed to convert decodedData to samples.", slog.Any("error", err))
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}
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matches, err := shazam.FindMatches(samples, 10.0, sampleRate)
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if err != nil {
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err := xerrors.New(err)
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logger.ErrorContext(ctx, "failed to get matches.", slog.Any("error", err))
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}
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fmt.Println("Matches! : ", matches)
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jsonData, err := json.Marshal(matches)
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if len(matches) > 10 {
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jsonData, _ = json.Marshal(matches[:10])
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}
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if err != nil {
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err := xerrors.New(err)
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logger.ErrorContext(ctx, "failed to marshal matches.", slog.Any("error", err))
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return
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}
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socket.Emit("matches", string(jsonData))
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})
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server.OnError("/", func(s socketio.Conn, e error) {
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log.Println("meet error:", e)
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})
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server.OnDisconnect("/", func(s socketio.Conn, reason string) {
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log.Println("closed", reason)
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})
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go func() {
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if err := server.Serve(); err != nil {
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log.Fatalf("socketio listen error: %s\n", err)
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}
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}()
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defer server.Close()
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router.Use(GinMiddleware("http://localhost:3000"))
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router.GET("/socket.io/*any", gin.WrapH(server))
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router.POST("/socket.io/*any", gin.WrapH(server))
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if err := router.Run(":5000"); err != nil {
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log.Fatal("failed run app: ", err)
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}
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}
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