//
//  RealmProvider.swift
//  Domain Ninja
//
//  Created by CyberSoft s.r.o. on 02/10/2017.
//  Copyright © 2017 CyberSoft s.r.o. All rights reserved.
//

import Foundation
import RealmSwift

class RealmProvider
{
    //SINGLE INSTANCE FOR THE WHOLE APP
    class var sharedInstance: RealmProvider
    {
        struct Singleton
        {
            static let instance = RealmProvider()
        }
        return Singleton.instance
    }

    //USERS
    func getUsers() -> [User]
    {
        let realm = try! Realm()
        let storagedUsers = realm.objects(User.self)

        var users: [User] = []

        for user in storagedUsers
        {
            users.append(user)
        }

        return users
    }

    func storeUser(user: User)
    {
        let realm = try! Realm()
        let storagedUsers = getUsers()

        for user in storagedUsers
        {
            try! realm.write
            {
                realm.delete(user)
            }
        }

        try! realm.write
        {
            realm.add(user, update: true)
        }
    }

    //GENERIC OBJECT STORAGE

    func getObjectsFromStorage(type: Object.Type) -> [Object]
    {
        let realm = try! Realm()
        let storagedObjects = realm.objects(type.self)

        var response: [Object] = []

        for object in storagedObjects
        {
            response.append(object)
        }

        return response
    }

    func storeObjectsToStorage(objects: [Object])
    {
        let realm = try! Realm()

        for object in objects
        {
            try! realm.write
            {
                realm.add(object, update: true)
            }
        }
    }

    func deleteObjects(objects: [Object])
    {
        let realm = try! Realm()

        for object in objects
        {
            try! realm.write
            {
                realm.delete(object)
            }
        }
    }


}