refactor: simplify homeDir and appConfig usage

cmd/download.go

@@ -6,11 +6,15 @@ import (
 	"fmt"
 	"time"
 
+	"github.com/mathismqn/godeez/internal/config"
 	"github.com/mathismqn/godeez/internal/downloader"
 	"github.com/spf13/cobra"
 )
 
-var opts downloader.Options
+var (
+	opts    downloader.Options
+	cfgPath string
+)
 
 var downloadCmd = &cobra.Command{
 	Use:   "download",
@@ -20,6 +24,7 @@ var downloadCmd = &cobra.Command{
 func init() {
 	RootCmd.AddCommand(downloadCmd)
 
+	downloadCmd.PersistentFlags().StringVar(&cfgPath, "config", "", "config file (default ~/.godeez/config.toml)")
 	downloadCmd.PersistentFlags().StringVarP(&opts.Quality, "quality", "q", "best", "download quality [mp3_128, mp3_320, flac, best]")
 	downloadCmd.PersistentFlags().DurationVarP(&opts.Timeout, "timeout", "t", 2*time.Minute, "timeout for each download (e.g. 10s, 1m, 2m30s)")
 	downloadCmd.PersistentFlags().BoolVar(&opts.BPM, "bpm", false, "fetch BPM/key and add to file tags")
@@ -42,12 +47,20 @@ func newDownloadCmd(resourceType string) *cobra.Command {
 		Short: fmt.Sprintf("Download songs from %s %s", article, resourceType),
 		Args:  cobra.ExactArgs(1),
 		PreRunE: func(cmd *cobra.Command, args []string) error {
+			appConfig, err := config.New(cfgPath)
+			if err != nil {
+				return err
+			}
+			cmd.SetContext(context.WithValue(cmd.Context(), "appConfig", appConfig))
+
 			return opts.Validate()
 		},
 		RunE: func(cmd *cobra.Command, args []string) error {
 			ctx := cmd.Context()
-			dl := downloader.New(appConfig, resourceType)
+			appConfigVal := ctx.Value("appConfig")
+			appConfig, _ := appConfigVal.(*config.Config)
 
+			dl := downloader.New(appConfig, resourceType)
 			if err := dl.Run(ctx, opts, args[0]); err != nil {
 				if errors.Is(err, context.Canceled) {
 					return nil