/*
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 (
	"fmt"
	"strconv"
	"strings"

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

// Various helpers to deal with database

// NewDataDBConn creates a DataDB connection
func NewDataDBConn(dbType, host, port, name, user,
	pass, marshaler string, opts *config.DataDBOpts,
	itmsCfg map[string]*config.ItemOpts) (d DataDBDriver, err error) {
	switch dbType {
	case utils.Redis:
		var dbNo int
		dbNo, err = strconv.Atoi(name)
		if err != nil {
			utils.Logger.Crit("Redis db name must be an integer!")
			return
		}
		if port != "" && !strings.Contains(host, ":") {
			host += ":" + port
		}
		d, err = NewRedisStorage(host, dbNo, user, pass, marshaler, utils.RedisMaxConns, utils.RedisMaxAttempts,
			opts.RedisSentinel, opts.RedisCluster, opts.RedisClusterSync, opts.RedisClusterOndownDelay,
			opts.RedisTLS, opts.RedisClientCertificate, opts.RedisClientKey, opts.RedisCACertificate)
	case utils.Mongo:
		d, err = NewMongoStorage(host, port, name, user, pass, marshaler, utils.DataDB, nil, opts.MongoQueryTimeout)
	case utils.Internal:
		d = NewInternalDB(nil, nil, itmsCfg)
	default:
		err = fmt.Errorf("unsupported db_type <%s>", dbType)
	}
	return
}