package storage

import (
	"fmt"

	"github.com/spf13/viper"
)

type Storage interface {
	CreateEvent(Event) error
	GetEvent(string) (*Event, error)
	GetEvents(namespaces []string) ([]Event, error)
	AddSubscription(eventid string, subscription Subscription) error
	UpdateSubscription(eventid string, subscriber string, deletesubscription Subscription) error
	UpdateEvent(Event) error
	GetSubscriber(subscriber string) ([]Subscription, error)
	GetSubscriptionByUser(subscriber string) ([]Subscription, error)
}
type StorageImpl struct {
}

func NewStorage(cfg *viper.Viper) (Storage, error) {
	var (
		storage_type = cfg.GetString("storage.db.type")
	)

	switch storage_type {
	case "mongodb":
		s, err := NewMongoDBStorage(cfg)
		return s, err
	case "psql":
		s, err := NewPostgresqlStorage(cfg)
		return s, err
	default:
		return nil, fmt.Errorf("storage type %v is not supported", storage_type)
	}
}