RandomUser/ImageStore.swift at master · ayunav/RandomUser · GitHub

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//
//  ImageStore.swift
//  RandomUser
//
//  Created by Ayuna NYC on 1/11/17.
//  Copyright © 2017 Ayuna NYC. All rights reserved.
//

import UIKit

struct ImageStore {

    private let manager = FileManager.default

    private static let jpgSuffix = ".jpg"


    private func documentsDirectoryUrl() -> URL {

        let directoryPaths = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
        let documentsDirectoryUrl = directoryPaths[0]

        return documentsDirectoryUrl
    }


    func store(image: UIImage, for user: User) {

        let imageName = String(Int(user.id)) + ImageStore.jpgSuffix

        let imagePathUrl = documentsDirectoryUrl().appendingPathComponent(imageName)

        let imageData = UIImageJPEGRepresentation(image, 0.7)!

        do {
            try imageData.write(to: imagePathUrl, options: .atomic)
        } catch {
            print(error)
        }
    }


    func retrieveLocalImageFor(user: User) -> UIImage? {

        let imageName = String(Int(user.id)) + ImageStore.jpgSuffix

        let imagePath = documentsDirectoryUrl().appendingPathComponent(imageName).path

        if manager.fileExists(atPath: imagePath) {

            let image = UIImage(contentsOfFile: imagePath)!

            return image

        } else {

            return nil
        }
    }

}