fixed pointer issue

internal/plugin/interface.go

@@ -2,6 +2,7 @@ package plugin
 
 import (
 	"errors"
+	"fmt"
 	"regexp"
 
 	"gitea.elara.ws/Hazel/music-kraken/internal/common"
@@ -163,7 +164,7 @@ func Fetch(musicObject data.MusicObject) (data.MusicObject, error) {
 		musicObject = musicObject.Merge(newMusicObject)
 	}
 
-	return musicObject, nil
+	return musicObject.Compile(), nil
 }
 
 type SearchConfig struct {
@@ -204,15 +205,21 @@ var variousAlbum = data.Album{
 	Name: "VariousAlbum",
 }.Compile().(data.Album)
 
-func downloadSong(song data.Song, state downloadState) {}
+func downloadSong(song data.Song, state downloadState) error {
+	fmt.Println("downloading: " + song.Name)
+	return nil
+}
 
-func Download(musicObject data.MusicObject, statesInput ...downloadState) {
+func Download(musicObject data.MusicObject, statesInput ...downloadState) []error {
 	state := downloadState{}
 	if len(statesInput) > 0 {
 		state = statesInput[0]
 	}
 
-	musicObject = musicObject.Compile()
+	musicObject, err := Fetch(musicObject)
+	if err != nil {
+		return []error{err}
+	}
 
 	if song, ok := musicObject.(data.Song); ok {
 		state.song = &song
@@ -232,8 +239,13 @@ func Download(musicObject data.MusicObject, statesInput ...downloadState) {
 				state.album = &variousAlbum
 			}
 		}
-		downloadSong(song, state)
-		return
+
+		err := downloadSong(song, state)
+		if err == nil {
+			return []error{}
+		} else {
+			return []error{err}
+		}
 	}
 
 	if album, ok := musicObject.(data.Album); ok {
@@ -247,18 +259,24 @@ func Download(musicObject data.MusicObject, statesInput ...downloadState) {
 			}
 		}
 
+		errList := []error{}
 		for _, song := range album.Songs {
-			Download(song, state)
+			errList = append(errList, Download(song, state)...)
 		}
-		return
+		return errList
 	}
 
 	if artist, ok := musicObject.(data.Artist); ok {
 		state.artist = &artist
 
+		errList := []error{}
 		for _, album := range artist.Albums {
-			Download(album, state)
+			errList = append(errList, Download(album, state)...)
 		}
-		return
+		return errList
+	}
+
+	return []error{
+		errors.New("music object not recognized"),
 	}
 }