package tests

import (
	"io/ioutil"
	"os"
	"time"

	"github.com/coreos/etcd/server"
	"github.com/coreos/etcd/store"
)

const (
	testName             = "ETCDTEST"
	testClientURL        = "localhost:4401"
	testRaftURL          = "localhost:7701"
	testSnapshotCount    = 10000
	testHeartbeatTimeout = time.Duration(50) * time.Millisecond
	testElectionTimeout  = time.Duration(200) * time.Millisecond
)

// Starts a server in a temporary directory.
func RunServer(f func(*server.Server)) {
	path, _ := ioutil.TempDir("", "etcd-")
	defer os.RemoveAll(path)

	store := store.New()
	registry := server.NewRegistry(store)
	corsInfo, _ := server.NewCORSInfo([]string{})

	psConfig := server.PeerServerConfig{
		Name: testName,
		Path: path,
		URL: "http://"+testRaftURL,
		BindAddr: testRaftURL,
		SnapshotCount: testSnapshotCount,
		HeartbeatTimeout: testHeartbeatTimeout,
		ElectionTimeout: testElectionTimeout,
		MaxClusterSize: 9,
		CORS: corsInfo,
	}
	ps := server.NewPeerServer(psConfig, &server.TLSConfig{Scheme: "http"}, &server.TLSInfo{}, registry, store, nil)

	sConfig := server.ServerConfig{
		Name: testName,
		URL: "http://"+testClientURL,
		BindAddr: testClientURL,
		CORS: corsInfo,
	}
	s := server.New(sConfig, &server.TLSConfig{Scheme: "http"}, &server.TLSInfo{}, ps, registry, store, nil)

	ps.SetServer(s)

	// Start up peer server.
	c := make(chan bool)
	go func() {
		c <- true
		ps.ListenAndServe(false, []string{})
	}()
	<-c

	// Start up etcd server.
	go func() {
		c <- true
		s.ListenAndServe()
	}()
	<-c

	// Wait to make sure servers have started.
	time.Sleep(50 * time.Millisecond)

	// Execute the function passed in.
	f(s)

	// Clean up servers.
	ps.Close()
	s.Close()
}