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Merge pull request #3 from chenxi92/peak
Save image to file; use combine framework to download image
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,69 @@ | ||
| // | ||
| // LocalFileManager.swift | ||
| // iAppStore | ||
| // | ||
| // Created by peak on 2022/1/25. | ||
| // Copyright © 2022 37 Mobile Games. All rights reserved. | ||
| // | ||
|
|
||
| import Foundation | ||
| import SwiftUI | ||
|
|
||
| class LocalFileManager { | ||
| static let instance = LocalFileManager() | ||
| private init() {} | ||
|
|
||
| func saveImage(image: UIImage, imageName: String, folderName: String) { | ||
| createFolderIfNeeded(folderName: folderName) | ||
|
|
||
| guard let data = image.pngData(), | ||
| let url = getURLForImage(imageName: imageName, folderName: folderName) | ||
| else { | ||
| return | ||
| } | ||
|
|
||
| do { | ||
| try data.write(to: url) | ||
| } catch let error { | ||
| print("Error saving image. ImageName: \(imageName) \(error)") | ||
| } | ||
| } | ||
|
|
||
| func getImage(imageName: String, folderName: String) -> UIImage? { | ||
| guard let url = getURLForImage(imageName: imageName, folderName: folderName), | ||
| FileManager.default.fileExists(atPath: url.path) else { | ||
| return nil | ||
| } | ||
| return UIImage(contentsOfFile: url.path) | ||
| } | ||
|
|
||
| // MARK: Private | ||
|
|
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| private func createFolderIfNeeded(folderName: String) { | ||
| guard let url = getURLForFolder(folderName: folderName) else { | ||
| return | ||
| } | ||
|
|
||
| if !FileManager.default.fileExists(atPath: url.path) { | ||
| do { | ||
| try FileManager.default.createDirectory(at: url, withIntermediateDirectories: true, attributes: nil) | ||
| } catch let error { | ||
| print("Error creating directory. FolderName: \(folderName). \(error)") | ||
| } | ||
| } | ||
| } | ||
|
|
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| private func getURLForFolder(folderName: String) -> URL? { | ||
| guard let url = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask).first, !folderName.isEmpty else { | ||
| return nil | ||
| } | ||
| return url.appendingPathComponent(folderName) | ||
| } | ||
|
|
||
| private func getURLForImage(imageName: String, folderName: String) -> URL? { | ||
| guard let folderURL = getURLForFolder(folderName: folderName), !imageName.isEmpty else { | ||
| return nil | ||
| } | ||
| return folderURL.appendingPathComponent(imageName + ".png") | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| // | ||
| // NetworkManager.swift | ||
| // iAppStore | ||
| // | ||
| // Created by peak on 2022/1/25. | ||
| // Copyright © 2022 37 Mobile Games. All rights reserved. | ||
| // | ||
|
|
||
| import Foundation | ||
| import Combine | ||
|
|
||
| class NetworkingManager { | ||
|
|
||
| enum NetworkingError: LocalizedError { | ||
| case badURLResponse(url: URL) | ||
| case unknown | ||
|
|
||
| var errorDescription: String? { | ||
| switch self { | ||
| case .badURLResponse(url: let url): return "[🔥] Bad response from URL: \(url)" | ||
| case .unknown: return "[⚠️] Unknown error occured" | ||
| } | ||
| } | ||
| } | ||
|
|
||
| static func download(url: URL) -> AnyPublisher<Data, Error> { | ||
| return URLSession.shared.dataTaskPublisher(for: url) | ||
| .tryMap({ try handleURLResponse(output: $0, url: url) }) | ||
| .retry(2) | ||
| .eraseToAnyPublisher() | ||
| } | ||
|
|
||
| static func handleURLResponse(output: URLSession.DataTaskPublisher.Output, url: URL) throws -> Data { | ||
| guard let response = output.response as? HTTPURLResponse, | ||
| response.statusCode >= 200 && response.statusCode < 300 else { | ||
| throw NetworkingError.badURLResponse(url: url) | ||
| } | ||
| return output.data | ||
| } | ||
|
|
||
| static func handleCompletion(completion: Subscribers.Completion<Error>) { | ||
| switch completion { | ||
| case .finished: | ||
| break | ||
| case .failure(let error): | ||
| print(error.localizedDescription) | ||
| } | ||
| } | ||
| } |
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