package client
 
 import (
 	"encoding/json"
 	"net/url"
 
 	"github.com/docker/docker/api/types"
 	"github.com/docker/docker/api/types/filters"
 	"github.com/docker/docker/api/types/swarm"
 	"golang.org/x/net/context"
 )
 
 // ConfigList returns the list of configs.
 func (cli *Client) ConfigList(ctx context.Context, options types.ConfigListOptions) ([]swarm.Config, error) {

 	if err := cli.NewVersionError("1.30", "config list"); err != nil {
 		return nil, err
 	}

 	query := url.Values{}
 
 	if options.Filters.Len() > 0 {

 		filterJSON, err := filters.ToJSON(options.Filters)

 		if err != nil {
 			return nil, err
 		}
 
 		query.Set("filters", filterJSON)
 	}
 
 	resp, err := cli.get(ctx, "/configs", query, nil)
 	if err != nil {
 		return nil, err
 	}
 
 	var configs []swarm.Config
 	err = json.NewDecoder(resp.body).Decode(&configs)
 	ensureReaderClosed(resp)
 	return configs, err
 }