package Auth

import (
	"fmt"
	"math/rand"
	"net/http"
	"net/http/httptest"
	"os"
	"path"
	"runtime"
	"strings"
	"testing"
	"time"

	"git.tovijaeschke.xyz/tovi/SuddenImpactRecords/Database"
	"git.tovijaeschke.xyz/tovi/SuddenImpactRecords/Models"

	"github.com/gorilla/mux"
)

var (
	r           *mux.Router
	letterRunes = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
)

func init() {
	// Fix working directory for tests
	_, filename, _, _ := runtime.Caller(0)
	dir := path.Join(path.Dir(filename), "..")
	err := os.Chdir(dir)
	if err != nil {
		panic(err)
	}

	Database.InitTest()

	r = mux.NewRouter()
}

func randString(n int) string {
	b := make([]rune, n)
	for i := range b {
		b[i] = letterRunes[rand.Intn(len(letterRunes))]
	}
	return string(b)
}

func createTestUser(random bool) (Models.User, error) {
	now := time.Now()

	email := "email@email.com"
	if random {
		email = fmt.Sprintf("%s@email.com", randString(16))
	}

	password, err := HashPassword("password")
	if err != nil {
		return Models.User{}, err
	}

	userData := Models.User{
		Email:     email,
		Password:  password,
		LastLogin: &now,
		FirstName: "Hugh",
		LastName:  "Mann",
	}

	err = Database.CreateUser(&userData)
	return userData, err
}

func Test_Login(t *testing.T) {
	t.Log("Testing Login...")

	r.HandleFunc("/admin/login", Login).Methods("POST")

	ts := httptest.NewServer(r)

	defer ts.Close()

	userData, err := createTestUser(true)
	if err != nil {
		t.Errorf("Expected nil, recieved %s", err.Error())
		t.FailNow()
	}

	postJson := `
{
	"email": "%s",
	"password": "password"
}
`
	postJson = fmt.Sprintf(postJson, userData.Email)

	res, err := http.Post(ts.URL+"/admin/login", "application/json", strings.NewReader(postJson))
	if err != nil {
		t.Errorf("Expected nil, recieved %s", err.Error())
		return
	}

	if res.StatusCode != http.StatusOK {
		t.Errorf("Expected %d, recieved %d", http.StatusOK, res.StatusCode)
		return
	}

	if len(res.Cookies()) != 1 {
		t.Errorf("Expected cookies len 1, recieved %d", len(res.Cookies()))
		return
	}
}