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goth.stack/lib/spotify.go

86 lines
2.3 KiB
Go

package lib
import (
"context"
"os"
"strings"
"sync"
"atri.dad/lib/pubsub"
"github.com/zmb3/spotify"
"golang.org/x/oauth2"
)
var (
spotifyOAuth2Endpoint = oauth2.Endpoint{
TokenURL: "https://accounts.spotify.com/api/token",
AuthURL: "https://accounts.spotify.com/authorize",
}
config *oauth2.Config
once sync.Once
)
func NowPlayingTextFilter(s string) string {
s = strings.Replace(s, "'", "'", -1)
s = strings.Replace(s, "\"", """, -1)
return s
}
func GetOAuth2Config(clientID string, clientSecret string) *oauth2.Config {
once.Do(func() {
config = &oauth2.Config{
ClientID: clientID,
ClientSecret: clientSecret,
Scopes: []string{spotify.ScopeUserReadCurrentlyPlaying},
Endpoint: spotifyOAuth2Endpoint,
}
})
return config
}
func GetCurrentlyPlayingTrack(clientID string, clientSecret string, refreshToken string) (*spotify.CurrentlyPlaying, error) {
// OAuth2 config
config := GetOAuth2Config(clientID, clientSecret)
// Token source
tokenSource := config.TokenSource(context.Background(), &oauth2.Token{RefreshToken: refreshToken})
// Get new token
newToken, err := tokenSource.Token()
if err != nil {
return nil, err
}
// Create new client
client := spotify.Authenticator{}.NewClient(newToken)
// Get currently playing track
playing, err := client.PlayerCurrentlyPlaying()
if err != nil {
return nil, err
}
return playing, nil
}
func CurrentlyPlayingTrackSSE(ctx context.Context, pubSub pubsub.PubSub) error {
clientID := os.Getenv("SPOTIFY_CLIENT_ID")
clientSecret := os.Getenv("SPOTIFY_CLIENT_SECRET")
refreshToken := os.Getenv("SPOTIFY_REFRESH_TOKEN")
playing, err := GetCurrentlyPlayingTrack(clientID, clientSecret, refreshToken)
if err != nil {
return err
}
if playing.Item != nil && playing.Playing {
songName := NowPlayingTextFilter(playing.Item.Name)
artistName := NowPlayingTextFilter(playing.Item.Artists[0].Name)
return SendSSE(ctx, pubSub, "spotify", `<div class="indicator-item badge badge-success"><a _='on mouseover put "🔥 Listening to `+songName+" by "+artistName+` 🔥" into my.textContent on mouseout put "🔥" into my.textContent' href="`+playing.Item.ExternalURLs["spotify"]+`" rel="noreferrer" target="_blank">🔥</a></div>`)
} else {
SendSSE(ctx, pubSub, "spotify", "<span></span>")
}
return nil
}