package dockerswarm

import (
	"fmt"

	"github.com/VictoriaMetrics/VictoriaMetrics/lib/promauth"
	"github.com/VictoriaMetrics/VictoriaMetrics/lib/promscrape/discoveryutils"
)

var configMap = discoveryutils.NewConfigMap()

type apiConfig struct {
	client *discoveryutils.Client
	port   int
}

func getAPIConfig(sdc *SDConfig, baseDir string) (*apiConfig, error) {
	v, err := configMap.Get(sdc, func() (interface{}, error) { return newAPIConfig(sdc, baseDir) })
	if err != nil {
		return nil, err
	}
	return v.(*apiConfig), nil
}

func newAPIConfig(sdc *SDConfig, baseDir string) (*apiConfig, error) {
	cfg := &apiConfig{
		port: sdc.Port,
	}
	ac, err := promauth.NewConfig(baseDir, sdc.BasicAuth, sdc.BearerToken, sdc.BearerTokenFile, sdc.TLSConfig)
	if err != nil {
		return nil, err
	}
	client, err := discoveryutils.NewClient(sdc.Host, ac)
	if err != nil {
		return nil, fmt.Errorf("cannot create HTTP client for %q: %w", sdc.Host, err)
	}
	cfg.client = client
	return cfg, nil
}