/*
Real-time Online/Offline Charging System (OCS) for Telecom & ISP environments
Copyright (C) ITsysCOM GmbH

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>
*/

package engine

import (
	"reflect"
	"strings"

	"github.com/cgrates/cgrates/utils"
)

type Responder struct {
	ShdChan *utils.SyncedChan
}

func (rs *Responder) Shutdown(arg *utils.TenantWithAPIOpts, reply *string) (err error) {
	dm.DataDB().Close()
	cdrStorage.Close()
	defer rs.ShdChan.CloseOnce()
	*reply = "Done!"
	return
}

// Ping used to detreminate if component is active
func (chSv1 *Responder) Ping(ign *utils.CGREvent, reply *string) error {
	*reply = utils.Pong
	return nil
}

func (rs *Responder) Call(serviceMethod string, args interface{}, reply interface{}) error {
	parts := strings.Split(serviceMethod, ".")
	if len(parts) != 2 {
		return utils.ErrNotImplemented
	}
	// get method
	method := reflect.ValueOf(rs).MethodByName(parts[1])
	if !method.IsValid() {
		return utils.ErrNotImplemented
	}
	// construct the params
	params := []reflect.Value{reflect.ValueOf(args), reflect.ValueOf(reply)}
	ret := method.Call(params)
	if len(ret) != 1 {
		return utils.ErrServerError
	}
	if ret[0].Interface() == nil {
		return nil
	}
	err, ok := ret[0].Interface().(error)
	if !ok {
		return utils.ErrServerError
	}
	return err
}