feat(watch): add command to register a playlist to the watch list

cmd/watch_add.go

@@ -0,0 +1,48 @@
+package cmd
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/mathismqn/godeez/internal/store"
+	"github.com/spf13/cobra"
+)
+
+var watchAddCmd = &cobra.Command{
+	Use:   "add <playlist_id>",
+	Short: "Add a playlist to the watch list",
+	Args:  cobra.ExactArgs(1),
+	RunE: func(cmd *cobra.Command, args []string) error {
+		id := args[0]
+		ok, err := store.IsWatched(id)
+		if err != nil {
+			return err
+		}
+		if ok {
+			fmt.Printf("Playlist %s is already being watched\n", id)
+			return nil
+		}
+
+		playlist := &store.WatchedPlaylist{
+			ID:      id,
+			Quality: opts.Quality,
+			BPM:     opts.BPM,
+			Timeout: opts.Timeout,
+		}
+
+		if err := playlist.Save(); err != nil {
+			return fmt.Errorf("failed to add playlist %s to watch list: %w", id, err)
+		}
+		fmt.Printf("Playlist %s added to watch list\n", id)
+
+		return nil
+	},
+}
+
+func init() {
+	watchCmd.AddCommand(watchAddCmd)
+
+	watchAddCmd.Flags().StringVarP(&opts.Quality, "quality", "q", "best", "download quality [mp3_128, mp3_320, flac, best]")
+	watchAddCmd.Flags().DurationVarP(&opts.Timeout, "timeout", "t", 2*time.Minute, "timeout for each download (e.g. 10s, 1m, 2m30s)")
+	watchAddCmd.Flags().BoolVar(&opts.BPM, "bpm", false, "fetch BPM/key and add to file tags")
+}