package api

import (
	"expvar"
	"fmt"
	"net/http"

	"github.com/ncarlier/webhookd/pkg/config"
)

func varz(conf *config.Config) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		fmt.Fprintf(w, "{\n")
		first := true
		expvar.Do(func(kv expvar.KeyValue) {
			if !first {
				fmt.Fprintf(w, ",\n")
			}
			first = false
			fmt.Fprintf(w, "%q: %s", kv.Key, kv.Value)
		})
		fmt.Fprintf(w, "\n}\n")
	})
}