/*

    Copyright (C) 2016 Apple Inc. All Rights Reserved.

    See LICENSE.txt for this sample’s licensing information

    Abstract:

                Album has an array of Photos loaded from the application bundle

*/

import UIKit

class Album: NSObject {

    // MARK: Properties

    let photos: [Photo]

    // MARK: Initializers

    override init () {

        guard let imageURLs = Bundle.main.urls(forResourcesWithExtension: "jpg", subdirectory: "Photos") else {

            fatalError("Unable to load photos")

        }

        photos = imageURLs.map { Photo(URL: $0) }

    }

    func importPhotos() -> Progress {

        let progress = Progress()

        progress.totalUnitCount = Int64(photos.count)

        for photo in photos {

            let importProgress = photo.startImport()

            progress.addChild(importProgress, withPendingUnitCount: 1)

        }

        return progress

    }

    func resetPhotos() {

        for photo in photos {

            photo.reset()

        }

    }

}