feat: add --interval flag

lib/app.go

@@ -5,12 +5,14 @@ type App struct {
 	SelectedTidalApiUrl string
 	Verbose             bool
 	SpotifyClient       *SpotifyClient
+	ApiInterval           int // How many ms to wait between one call to apis and the other
 }
 
 func NewApp() App {
 	return App{
 		UserAgent: "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36",
 		Verbose:   false,
+		ApiInterval: 800,
 	}
 }
 

lib/download.go

@@ -95,7 +95,7 @@ func (app *App) DownloadPlaylist(url string, outputFile string, service string,
 		}
 
 		// Avoid getting rate limited
-		time.Sleep(800 * time.Millisecond)
+		time.Sleep(time.Duration(app.ApiInterval) * time.Millisecond)
 	}
 
 	return nil

main.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"log"
 	"os"
+	"strconv"
 
 	"github.com/Superredstone/spotiflac-cli/lib"
 	"github.com/urfave/cli/v3"
@@ -39,6 +40,13 @@ func main() {
 						Usage:       "set service to tidal/amazon/qobuz (FFmpeg is required for amazon and qobuz)",
 						Destination: &service,
 					},
+					&cli.IntFlag{
+						Name: "interval",
+						Aliases: []string{"i"},
+						Usage: "interval between api requests in milliseconds",
+						DefaultText: strconv.Itoa(app.ApiInterval),
+						Destination: &app.ApiInterval,
+					},
 				},
 				Action: func(ctx context.Context, cmd *cli.Command) error {
 					song_url := cmd.Args().First()