paginate artist album fetching for deezer and qobuz

internal/provider/deezer/client.go

@@ -203,7 +203,7 @@ func (c *Client) GetMetadata(ctx context.Context, item, mediaType string) (map[s
 		resp["tracks"] = map[string]any{"items": items}
 		return resp, nil
 	case "artist":
-		resp, err := c.apiGet(ctx, "/artist/"+item+"/albums", nil)
+		resp, err := c.getArtistAlbums(ctx, item)
 		if err != nil {
 			return nil, err
 		}
@@ -224,6 +224,35 @@ func (c *Client) GetMetadata(ctx context.Context, item, mediaType string) (map[s
 	}
 }
 
+func (c *Client) getArtistAlbums(ctx context.Context, artistID string) (map[string]any, error) {
+	const pageSize = 100
+	index := 0
+	total := -1
+	all := make([]any, 0)
+	for {
+		params := url.Values{}
+		params.Set("limit", strconv.Itoa(pageSize))
+		params.Set("index", strconv.Itoa(index))
+		resp, err := c.apiGet(ctx, "/artist/"+strings.TrimSpace(artistID)+"/albums", params)
+		if err != nil {
+			return nil, err
+		}
+		data, _ := resp["data"].([]any)
+		all = append(all, data...)
+		if total < 0 {
+			total = intFromAny(resp["total"])
+		}
+		if len(data) < pageSize {
+			break
+		}
+		index += len(data)
+		if total > 0 && index >= total {
+			break
+		}
+	}
+	return map[string]any{"data": all, "total": total}, nil
+}
+
 func (c *Client) GetDownloadable(ctx context.Context, item string, _ int) (*provider.Downloadable, error) {
 	if strings.TrimSpace(c.license) == "" {
 		if strings.TrimSpace(c.arl) != "" {