fixed pointer issue

internal/cli/shell.go

@@ -76,21 +76,29 @@ func (s musicObjectStore) currentMusicObjects() ([]data.MusicObject, error) {
 
 var indexSelectionPattern = regexp.MustCompile(`^[\d ,]+$`)
 
-func interpretCommand(command string, store musicObjectStore) (musicObjectStore, error) {
+func interpretCommand(command string, store musicObjectStore) (musicObjectStore, []error) {
 	// going back in history
 	if command == ".." {
 		if len(store) <= 1 {
-			return store, errors.New("can't go back")
+			return store, []error{errors.New("can't go back")}
 		}
 
-		return store[:len(store)-1], nil
+		return store[:len(store)-1], []error{}
+	}
+
+	forceDownload := false
+	if strings.HasPrefix(command, "d:") {
+		command, _ = strings.CutPrefix(command, "d:")
+		command = strings.TrimSpace(command)
+
+		forceDownload = true
 	}
 
 	// fetch special music object
 	if indexSelectionPattern.MatchString(command) {
 		currentMusicObjects, err := store.currentMusicObjects()
 		if err != nil {
-			return store, err
+			return store, []error{err}
 		}
 
 		var fetched data.MusicObject
@@ -99,14 +107,14 @@ func interpretCommand(command string, store musicObjectStore) (musicObjectStore,
 			index, _ := strconv.Atoi(strings.TrimSpace(stringIndex))
 
 			if index >= len(currentMusicObjects) || index < 0 {
-				return store, errors.New(command + " is out of bounds [0 <= " + strconv.Itoa(index) + " <= " + strconv.Itoa(len(currentMusicObjects)-1) + "]")
+				return store, []error{errors.New(command + " is out of bounds [0 <= " + strconv.Itoa(index) + " <= " + strconv.Itoa(len(currentMusicObjects)-1) + "]")}
 			}
 
 			current := currentMusicObjects[index]
 
 			newFetched, err := plugin.Fetch(current)
 			if err != nil {
-				return store, err
+				return store, []error{err}
 			}
 
 			if fetched == nil {
@@ -116,7 +124,13 @@ func interpretCommand(command string, store musicObjectStore) (musicObjectStore,
 			}
 		}
 
-		return append(store, fetched.Related()), nil
+		if forceDownload {
+			return store, plugin.Download(fetched)
+		} else {
+			return append(store, fetched.Related()), []error{}
+		}
+	} else if forceDownload {
+		return store, []error{errors.New("can only download indices not " + command)}
 	}
 
 	// search in every other case
@@ -126,7 +140,7 @@ func interpretCommand(command string, store musicObjectStore) (musicObjectStore,
 		fmt.Println()
 	}
 
-	return append(store, currentMusicObjects), nil
+	return append(store, currentMusicObjects), []error{}
 }
 
 func Shell(commandsList ...[]string) {
@@ -161,10 +175,13 @@ func Shell(commandsList ...[]string) {
 			fmt.Println("> " + command)
 		}
 
-		store, err = interpretCommand(strings.TrimSpace(command), store)
-		if err != nil {
+		var errList []error
+		store, errList = interpretCommand(strings.TrimSpace(command), store)
+		if len(errList) > 0 {
 			fmt.Println()
-			fmt.Println(color.Yellow + err.Error() + color.Reset)
+			for _, err := range errList {
+				fmt.Println(color.Yellow + err.Error() + color.Reset)
+			}
 			fmt.Println()
 		}