Database.swift

//
//  Database.swift
//  Core
//
//  Copyright © 2019 DuckDuckGo. All rights reserved.
//
//  Licensed under the Apache License, Version 2.0 (the "License");
//  you may not use this file except in compliance with the License.
//  You may obtain a copy of the License at
//
//  http://www.apache.org/licenses/LICENSE-2.0
//
//  Unless required by applicable law or agreed to in writing, software
//  distributed under the License is distributed on an "AS IS" BASIS,
//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//  See the License for the specific language governing permissions and
//  limitations under the License.
//

import BrowserServicesKit
import Foundation
import CoreData
import Persistence
import RemoteMessaging

public class Database {

    fileprivate struct Constants {
        static let databaseGroupID = "\(Global.groupIdPrefix).database"

        static let databaseName = "Database"
    }

    public static let shared = makeCoreDataDatabase()

    static func makeCoreDataDatabase() -> CoreDataDatabase {

        guard let appRatingModel = CoreDataDatabase.loadModel(from: .main, named: "AppRatingPrompt"),
              let remoteMessagingModel = CoreDataDatabase.loadModel(from: RemoteMessaging.bundle, named: "RemoteMessaging"),
              let managedObjectModel = NSManagedObjectModel(byMerging: [appRatingModel,
                                                                        remoteMessagingModel,
                                                                        HTTPSUpgrade.managedObjectModel]) else {
            fatalError("No DB scheme found")
        }

        let url = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: Database.Constants.databaseGroupID)!
        return CoreDataDatabase(name: Constants.databaseName,
                                containerLocation: url,
                                model: managedObjectModel)
    }
}