package route

import (
	"net/http"

	"forge.cadoles.com/wpetit/hydra-passwordless/internal/hydra"
	"forge.cadoles.com/wpetit/hydra-passwordless/internal/query"
	"github.com/pkg/errors"
	"gitlab.com/wpetit/goweb/cqrs"
	"gitlab.com/wpetit/goweb/logger"
	"gitlab.com/wpetit/goweb/middleware/container"
)

func handleVerification(w http.ResponseWriter, r *http.Request) {
	ctn := container.Must(r.Context())
	bus := cqrs.Must(ctn)

	token := r.URL.Query().Get("token")
	if token == "" {
		http.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest)

		return
	}

	qry := &query.VerifyUserRequest{
		Token: token,
	}

	ctx := r.Context()

	result, err := bus.Query(ctx, qry)
	if err != nil {
		logger.Error(ctx, "could not verify token", logger.E(err))

		err := renderErrorPage(
			w, r,
			http.StatusBadRequest,
			"Lien invalide",
			"Le lien de connexion utilisé est invalide ou a expiré.",
		)
		if err != nil {
			panic(errors.Wrapf(err, "could not render '%s' page", r.URL.Path))
		}

		return
	}

	verifyUserData, ok := result.Data().(*query.VerifyUserData)
	if !ok {
		panic(errors.New("unexpected result data"))
	}

	hydr := hydra.Must(ctn)

	accept := &hydra.AcceptLoginRequest{
		Subject:     verifyUserData.Email,
		Remember:    verifyUserData.RememberMe,
		RememberFor: 3600,
		Context: map[string]interface{}{
			"email": verifyUserData.Email,
		},
	}

	res, err := hydr.AcceptLoginRequest(verifyUserData.Challenge, accept)
	if err != nil {
		logger.Error(ctx, "could not retrieve hydra accept response", logger.E(err))

		err := renderErrorPage(
			w, r,
			http.StatusBadRequest,
			"Lien invalide",
			"Le lien de connexion utilisé est invalide ou a expiré.",
		)
		if err != nil {
			panic(errors.Wrapf(err, "could not render '%s' page", r.URL.Path))
		}

		return
	}

	http.Redirect(w, r, res.RedirectTo, http.StatusSeeOther)
}