package user

import (
	"fmt"
	"math/rand"
	"strings"
	"time"

	"git.umbach.dev/app-idea/rest-api/routers/database"
	"git.umbach.dev/app-idea/rest-api/routers/debug"
	"github.com/gofiber/fiber/v2"
	"github.com/google/uuid"
	"golang.org/x/crypto/bcrypt"
)

func NewUser(c *fiber.Ctx) error {
	type LoginInput struct {
		Username string `json:"username"`
		Email    string `json:"email"`
		Password string `json:"password"`
	}

	var input LoginInput

	// check if given request is complete
	if err := c.BodyParser(&input); err != nil {
		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{"status": "error", "message": "Error on login request", "data": err})
	}

	// check in database if username and email is available

	db, err := database.GetDatabase()

	if db == nil || err != nil {
		return c.SendString(err.Error())
	}

	password := []byte(input.Password)

	hashedPassword, err := bcrypt.GenerateFromPassword(password, bcrypt.DefaultCost)

	if err != nil {
		panic(err)
	}

	//err = bcrypt.CompareHashAndPassword(hashedPassword, []byte("hello wolrd"))
	//fmt.Println(err)

	user_id := strings.Replace(uuid.New().String(), "-", "", -1)
	user_hashtag := RandomHashtag(6)
	created := time.Now().Format("2006-02-01 15:04:05")

	sqlStatement, err := db.Prepare("INSERT INTO users (user_id, user_hashtag, username, email, password, created) VALUES (?, ?, ?, ?, ?, ?);")
	sqlStatement.Exec(user_id, user_hashtag, input.Username, input.Email, hashedPassword, created)

	db.Close()

	debug.Msg("user created", user_id, user_hashtag, input.Username, input.Email)

	return c.JSON(fiber.Map{"status": 1, "user_hashtag": user_hashtag})
}

func RandomHashtag(n int) string {
	var letters = []rune("ABCDEFGHIJKLMNOPQRSTUVWXYZ")

	s := make([]rune, n)

	for i := range s {
		s[i] = letters[rand.Intn(len(letters))]
	}

	//fmt.Println(s)

	return string(s)
}

func GetUser(c *fiber.Ctx) error {
	return c.SendString("user")
}

func GetUsers(c *fiber.Ctx) error {
	db, err := database.GetDatabase()

	// c.Params("id")

	if db == nil || err != nil {
		return c.SendString("db error")
	}

	list := []string{}

	var (
		name string
	)

	rows, err := db.Query("SELECT username FROM users;")
	defer rows.Close()
	fmt.Println("reading data:")
	for rows.Next() {
		err := rows.Scan(&name)
		fmt.Printf("Data row = (%s, %s)\n", name, err)
		list = append(list, name)
	}
	err = rows.Err()
	fmt.Println("Done")

	return c.JSON(list)
}