package op

import (
	"errors"
	"net/http"

	"github.com/caos/oidc/pkg/oidc"
)

//TokenExchange will handle the OAuth 2.0 token exchange grant ("urn:ietf:params:oauth:grant-type:token-exchange")
func TokenExchange(w http.ResponseWriter, r *http.Request, exchanger Exchanger) {
	tokenRequest, err := ParseTokenExchangeRequest(w, r)
	if err != nil {
		RequestError(w, r, err)
		return
	}
	err = ValidateTokenExchangeRequest(tokenRequest, exchanger.Storage())
	if err != nil {
		RequestError(w, r, err)
		return
	}
}

func ParseTokenExchangeRequest(w http.ResponseWriter, r *http.Request) (oidc.TokenRequest, error) {
	return nil, errors.New("Unimplemented") //TODO: impl
}

func ValidateTokenExchangeRequest(tokenReq oidc.TokenRequest, storage Storage) error {
	return errors.New("Unimplemented") //TODO: impl
}