package main

import (
	"cmp"
	"context"
	"crypto/rand"
	"encoding/base64"
	"maps"
	"net/http"
	"time"

	"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"`
}

func (h *Handler) createSession(c echo.Context, user *User) error {
	ctx := context.Background()

	id := make([]byte, 64)
	_, err := rand.Read(id)
	if err != nil {
		return err
	}

	dev := cmp.Or(c.Param("device"), c.Request().Header.Get("User-Agent"))
	device := &dev
	if dev == "" {
		device = nil
	}

	session, err := h.db.CreateSession(ctx, dbc.CreateSessionParams{
		ID:     base64.StdEncoding.EncodeToString(id),
		UserID: user.ID,
		Device: device,
	})
	if err != nil {
		return err
	}
	return c.JSON(201, session)
}

func (h *Handler) CreateJwt(c echo.Context, user *User) error {
	claims := maps.Clone(user.Claims)
	claims["sub"] = user.ID.String()
	claims["iss"] = h.config.Issuer
	claims["exp"] = &jwt.NumericDate{
		Time: time.Now().UTC().Add(time.Hour),
	}
	claims["iss"] = &jwt.NumericDate{
		Time: time.Now().UTC(),
	}
	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,
	})
}