feat: add amazon and qobuz services

flake.nix

@@ -55,6 +55,8 @@
               go
               # Required for .deb build
               dpkg
+
+              ffmpeg_7
             ];
           };
         }
@@ -67,6 +69,10 @@
             src = ./.;
             vendorHash = "sha256-EpGgfiCqJjHEOphV2x8FmXeIFls7eq2NVxb/or4NLUo=";
 
+            dependencies = with pkgs; [
+              ffmpeg_7
+            ];
+
             nativeBuildInputs = with pkgs; [
               installShellFiles
             ];

main.go

@@ -11,7 +11,7 @@ import (
 )
 
 func main() {
-	var output_folder string
+	var output_folder, service string
 
 	application := app.NewApp()
 
@@ -32,10 +32,16 @@ func main() {
 						Usage:       "set output folder",
 						Destination: &output_folder,
 					},
+					&cli.StringFlag{
+						Name:        "service",
+						Aliases:     []string{"s"},
+						Usage:       "set service to tidal/amazon/qobuz (FFmpeg is required for amazon and qobuz)",
+						Destination: &service,
+					},
 				},
 				Action: func(ctx context.Context, cmd *cli.Command) error {
 					song_url := cmd.Args().First()
-					err := pkg.Download(application, song_url, output_folder)
+					err := pkg.Download(application, song_url, output_folder, service)
 					return err
 				},
 			},

pkg/download.go

@@ -13,11 +13,26 @@ const (
 	DEFAULT_DOWNLOAD_OUTPUT_FOLDER = "."
 )
 
-func Download(application *app.App, url string, output_folder string) error {
+func Download(application *app.App, url string, output_folder string, service string) error {
 	if output_folder == "" {
 		output_folder = DEFAULT_DOWNLOAD_OUTPUT_FOLDER
 	}
 
+	if service == "" {
+		service = DEFAULT_DOWNLOAD_SERVICE
+	}
+
+	if service == "amazon" || service == "qobuz" {
+		isInstalled, err := application.CheckFFmpegInstalled()
+		if err != nil {
+			return err
+		}
+
+		if !isInstalled {
+			return errors.New("FFmpeg is not installed.")
+		}
+	}
+
 	url_type := GetUrlType(url)
 
 	switch url_type {
@@ -29,7 +44,7 @@ func Download(application *app.App, url string, output_folder string) error {
 
 		track := metadata.Track
 		downloadRequest := app.DownloadRequest{
-			Service:     DEFAULT_DOWNLOAD_SERVICE,
+			Service:     service,
 			TrackName:   track.Name,
 			ArtistName:  track.Artists,
 			AlbumName:   track.AlbumName,
@@ -53,7 +68,7 @@ func Download(application *app.App, url string, output_folder string) error {
 			fmt.Println("[" + strconv.Itoa(idx+1) + "/" + trackListSize + "] " + track.Name + " - " + track.Artists)
 
 			downloadRequest := app.DownloadRequest{
-				Service:      DEFAULT_DOWNLOAD_SERVICE,
+				Service:      service,
 				TrackName:    track.Name,
 				ArtistName:   track.Artists,
 				AlbumName:    track.AlbumName,