package op

import (
	"fmt"
	"net/http"

	"github.com/gorilla/mux"
	"github.com/ory/fosite/handler/openid"
)

func (op *OIDCHandler) TokenEndpoint(w http.ResponseWriter, req *http.Request) {
	w.Header().Set("Access-Control-Allow-Origin", "*")
	namespace := mux.Vars(req)["namespace"]
	provider := op.NamespaceProviders[namespace]

	ctx := req.Context()

	mySessionData := openid.NewDefaultSession()

	accessRequest, err := provider.NewAccessRequest(ctx, req, mySessionData)
	if err != nil {
		fmt.Printf("Error occurred in NewAccessRequest: %+v", err)
		provider.WriteAccessError(w, accessRequest, err)
		return
	}

	if accessRequest.GetGrantTypes().ExactOne("client_credentials") {
		for _, scope := range accessRequest.GetRequestedScopes() {
			accessRequest.GrantScope(scope)
		}
	}

	response, err := provider.NewAccessResponse(ctx, accessRequest)
	if err != nil {
		fmt.Printf("Error occurred in NewAccessResponse: %+v", err)
		provider.WriteAccessError(w, accessRequest, err)
		return
	}

	provider.WriteAccessResponse(w, accessRequest, response)
}