package Api

import (
	"encoding/json"
	"fmt"
	"io/ioutil"
	"log"
	"math/rand"
	"net/http"
	"net/http/httptest"
	"os"
	"path"
	"runtime"
	"strings"
	"testing"

	"git.tovijaeschke.xyz/tovi/SuddenImpactRecords/Database"
	"git.tovijaeschke.xyz/tovi/SuddenImpactRecords/Models"
	"github.com/gorilla/mux"
	"gorm.io/gorm"
)

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)
	}

	log.SetOutput(ioutil.Discard)
	Database.Init()

	r = mux.NewRouter()
}

var letterRunes = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")

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

func Test_getUsers(t *testing.T) {
	t.Log("Testing getUsers...")

	r.HandleFunc("/user", getUsers).Methods("GET")

	ts := httptest.NewServer(r)
	defer ts.Close()

	var err error
	for i := 0; i < 20; i++ {
		userData := Models.User{
			Email: fmt.Sprintf(
				"%s@email.com",
				RandStringRunes(16),
			),
			Password:        "password",
			ConfirmPassword: "password",
		}

		err = Database.CreateUser(&userData)
		if err != nil {
			t.Errorf("Expected nil, recieved %s", err.Error())
		}

		defer Database.DB.
			Session(&gorm.Session{FullSaveAssociations: true}).
			Unscoped().
			Delete(&userData)
	}

	res, err := http.Get(ts.URL + "/user?page=1&pageSize=10")

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

	getUsersData := new([]Models.User)
	err = json.NewDecoder(res.Body).Decode(getUsersData)
	if err != nil {
		t.Errorf("Expected nil, recieved %s", err.Error())
	}

	if len(*getUsersData) != 10 {
		t.Errorf("Expected 10, recieved %d", len(*getUsersData))
	}
}

func Test_createUser(t *testing.T) {
	t.Log("Testing createUser...")

	r.HandleFunc("/user", createUser).Methods("POST")

	ts := httptest.NewServer(r)

	defer ts.Close()

	postJson := `
{
	"email": "email@email.com",
	"password": "password",
	"confirm_password": "password",
	"first_name": "Hugh",
	"last_name": "Mann"
}
`

	res, err := http.Post(ts.URL+"/user", "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
	}

	Database.DB.Model(Models.User{}).
		Select("count(*) > 0").
		Where("email = ?", "email@email.com").
		Delete(Models.User{})
}