package copart

import (
	"bytes"
	"fmt"
	"io/ioutil"
	"local/router"
	"net/http"
	"net/http/httptest"
	"os/exec"
	"path"
	"runtime"
	"strings"
	"testing"
	"time"
)

func StartServer() *http.Server {
	_, filename, _, _ := runtime.Caller(0)
	dir := path.Dir(filename)
	html := path.Join(dir, "testdata", "sample_auction_live.html")
	b, _ := ioutil.ReadFile(html)

	handler := func(w http.ResponseWriter, r *http.Request) {
		w.Write(b)
	}

	s := router.New()
	s.Add(router.Wildcard, handler)
	s.Add("/", handler)

	port := getPort()

	cmd := exec.Command("bash", "-c", `ifconfig en0 | grep -o '[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*' | head -n 1`)
	out := bytes.NewBuffer(nil)
	cmd.Stdout = out
	if err := cmd.Run(); err != nil {
		panic(err)
	}
	if len(out.Bytes()) < 1 {
		cmd := exec.Command("bash", "-c", `ifconfig eno1 | grep -o '[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*' | head -n 1`)
		cmd.Stdout = out
		if err := cmd.Run(); err != nil {
			panic(err)
		}
	}
	url := fmt.Sprintf("http://%s:%s", strings.TrimSpace(string(out.Bytes())), port)

	srv := &http.Server{
		Addr:    ":" + port,
		Handler: s,
	}
	go func() {
		if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
			panic(err)
		}
	}()
	for {
		if _, err := http.Get(url); err == nil {
			break
		}
		time.Sleep(time.Millisecond * 250)
	}
	srv.Addr = url
	return srv
}

func getPort() string {
	s := httptest.NewServer(nil)
	s.Close()
	time.Sleep(time.Millisecond * 2500)
	seg := strings.Split(s.URL, ":")
	return seg[len(seg)-1]
}

func TestStartServer(t *testing.T) {
	s := StartServer()
	defer s.Close()
	resp, _ := http.Get(s.Addr)
	b, _ := ioutil.ReadAll(resp.Body)
	if len(b) < 1 {
		t.Fatalf("failed to start fake auction server")
	}
}