package main

import (
	"context"
	"net/http"

	"github.com/alexedwards/argon2id"
	"github.com/golang-jwt/jwt/v5"
	"github.com/labstack/echo/v4"
	"github.com/zoriya/kyoo/keibi/dbc"
)

type LoginDto struct {
	Login    string `json:"login" validate:"required"`
	Password string `json:"password" validate:"required"`
}

type RegisterDto struct {
	Username string `json:"username" validate:"required"`
	Email    string `json:"email" validate:"required,email"`
	Password string `json:"password" validate:"required"`
}

func (h *Handler) Register(c echo.Context) error {
	var req RegisterDto
	err := c.Bind(&req)
	if err != nil {
		return echo.NewHTTPError(http.StatusBadRequest, err.Error())
	}
	if err = c.Validate(&req); err != nil {
		return err
	}

	pass, err := argon2id.CreateHash(req.Password, argon2id.DefaultParams)
	if err != nil {
		return echo.NewHTTPError(400, "Invalid password")
	}

	duser, err := h.db.CreateUser(context.Background(), dbc.CreateUserParams{
		Username: req.Username,
		Email:    req.Email,
		Password: &pass,
		Claims:   h.config.DefaultClaims,
	})
	if err != nil {
		return echo.NewHTTPError(409, "Email or username already taken")
	}
	user := MapDbUser(&duser)
	return h.createToken(c, &user)
}

func (h *Handler) createToken(c echo.Context, user *User) error {
	claims := &jwt.RegisteredClaims{
		Subject: user.ID.String(),
	}
	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
	t, err := token.SignedString(h.config.JwtSecret)
	if err != nil {
		return err
	}
	return c.JSON(http.StatusOK, echo.Map{
		"token": t,
	})
}