func remoteIdentityExists(ur user.UserRepo, connectorID, id string) (bool, error) {
	_, err := ur.GetByRemoteIdentity(nil, user.RemoteIdentity{
		ConnectorID: connectorID,
		ID:          id,
	})

	if err == user.ErrorNotFound {
		return false, nil
	}

	if err == nil {
		return true, nil
	}

	return false, err
}

func getConnectorForUserByEmail(ur user.UserRepo, email string) (string, error) {
	usr, err := ur.GetByEmail(nil, email)
	if err != nil {
		return "", err
	}

	rids, err := ur.GetRemoteIdentities(nil, usr.ID)
	if err != nil {
		return "", err
	}

	if len(rids) == 0 {
		return "", fmt.Errorf("No remote Identities for user %v", usr.ID)
	}

	return rids[0].ConnectorID, nil
}

// handleVerifyEmailResendFunc will resend an email-verification email given a valid JWT for the user and a redirect URL.
// This handler is meant to be wrapped in clientTokenMiddleware, so a valid
// bearer token for the client is expected to be present.
// The user's JWT should be in the "token" parameter and the redirect URL should
// be in the "redirect_uri" param. Note that this re
func handleVerifyEmailResendFunc(
	issuerURL url.URL,
	srvKeysFunc func() ([]key.PublicKey, error),
	emailer *useremail.UserEmailer,
	userRepo user.UserRepo,
	clientIdentityRepo client.ClientIdentityRepo) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		decoder := json.NewDecoder(r.Body)
		var params struct {
			Token       string `json:"token"`
			RedirectURI string `json:"redirectURI"`
		}
		err := decoder.Decode(&params)
		if err != nil {
			writeAPIError(w, http.StatusBadRequest, newAPIError(errorInvalidRequest,
				"unable to parse body as JSON"))
			return
		}

		token := params.Token
		if token == "" {
			writeAPIError(w, http.StatusBadRequest,
				newAPIError(errorInvalidRequest, "missing valid JWT"))
			return
		}

		clientID, err := getClientIDFromAuthorizedRequest(r)
		if err != nil {
			log.Errorf("Failed to extract clientID: %v", err)
			writeAPIError(w, http.StatusUnauthorized,
				newAPIError(errorInvalidRequest, "cilent could not be extracted from bearer token."))
			return
		}

		cm, err := clientIdentityRepo.Metadata(clientID)
		if err == client.ErrorNotFound {
			log.Errorf("No such client: %v", err)
			writeAPIError(w, http.StatusBadRequest,
				newAPIError(errorInvalidRequest, "invalid client_id"))
			return

		}
		if err != nil {
			log.Errorf("Error getting ClientMetadata: %v", err)
			writeAPIError(w, http.StatusInternalServerError,
				newAPIError(errorServerError, "could not send email at this time"))
			return
		}

		noop := func() error { return nil }
		keysFunc := func() []key.PublicKey {
			keys, err := srvKeysFunc()
			if err != nil {
				log.Errorf("Error getting keys: %v", err)
			}
			return keys
		}

		jwt, err := jose.ParseJWT(token)
		if err != nil {
			log.Errorf("Failed to Parse JWT: %v", err)
			writeAPIError(w, http.StatusBadRequest,
				newAPIError(errorInvalidRequest, "token could not be parsed"))
			return
		}

		verifier := oidc.NewJWTVerifier(issuerURL.String(), clientID, noop, keysFunc)
		if err := verifier.Verify(jwt); err != nil {
			log.Errorf("Failed to Verify JWT: %v", err)
			writeAPIError(w, http.StatusUnauthorized,
				newAPIError(errorAccessDenied, "invalid token could not be verified"))
			return
		}

		claims, err := jwt.Claims()
		if err != nil {
			log.Errorf("Failed to extract claims from JWT: %v", err)
			writeAPIError(w, http.StatusBadRequest,
				newAPIError(errorInvalidRequest, "invalid token could not be parsed"))
			return
		}

		sub, ok, err := claims.StringClaim("sub")
		if err != nil || !ok || sub == "" {
			log.Errorf("Failed to extract sub claim from JWT: err:%q ok:%v", err, ok)
			writeAPIError(w, http.StatusBadRequest,
				newAPIError(errorInvalidRequest, "could not extract sub claim from token"))
			return
		}

		usr, err := userRepo.Get(nil, sub)
		if err != nil {
			if err == user.ErrorNotFound {
				log.Errorf("Failed to find user specified by token: %v", err)
				writeAPIError(w, http.StatusBadRequest,
//.........这里部分代码省略.........