fix: allow downloads without premium account

internal/deezer/session.go

@@ -29,6 +29,7 @@ type Session struct {
 	APIToken     string
 	LicenseToken string
 	HttpClient   *http.Client
+	Premium      bool
 }
 
 func Authenticate(ctx context.Context, arlCookie string) (*Session, error) {
@@ -75,14 +76,14 @@ func Authenticate(ctx context.Context, arlCookie string) (*Session, error) {
 	if res.Results.User.Id == 0 {
 		return nil, fmt.Errorf("invalid arl cookie")
 	}
-	if !res.Results.User.Options.MobileOffline && !res.Results.User.Options.WebOffline {
-		return nil, fmt.Errorf("premium account required")
-	}
+
+	isPremium := res.Results.User.Options.MobileOffline || res.Results.User.Options.WebOffline
 
 	return &Session{
 		ArlCookie:    arlCookie,
 		APIToken:     res.Results.APIToken,
 		LicenseToken: res.Results.User.Options.LicenseToken,
 		HttpClient:   client,
+		Premium:      isPremium,
 	}, nil
 }

internal/downloader/client.go

@@ -47,6 +47,10 @@ func (c *Client) Run(ctx context.Context, opts Options, id string) error {
 		return err
 	}
 
+	if !c.deezerClient.Session.Premium && (opts.Quality == "mp3_320" || opts.Quality == "flac") {
+		return fmt.Errorf("premium account required for %s quality", opts.Quality)
+	}
+
 	var resource deezer.Resource
 	switch c.resourceType {
 	case "album":