今是昨非

    
 fileprivate var fileUrls: [URL]? // 選択されたファイルパス

 @IBAction func choosePathAction(_ sender: Any) {
     let panel = NSOpenPanel()
     panel.allowsMultipleSelection = true // 複数ファイルの選択をサポート
     panel.canChooseDirectories = true // ディレクトリを選択可能
     panel.canChooseFiles = true // ファイルを選択可能
     panel.begin { response in
         if response == .OK {
             self.fileUrls = panel.urls
             self._privateUpdateFilePathLabelDisplay()
         }
     }
 }

     /// パス表示ラベルの文字を更新
 fileprivate func _privateUpdateFilePathLabelDisplay() {
     guard let fileUrls = fileUrls else {
         // デフォルト表示
         filePath.stringValue = "圧縮するファイルパス"
         return
     }

     if fileUrls.count == 1 {
         // 単一ファイル || フォルダが選択されていることを示します
         filePath.stringValue = "選択済み：" + (fileUrls.first?.absoluteString ?? "")
     }
     else {
         filePath.stringValue = "複数のファイルが選択されました"
     }
 }

import Foundation
import AppKit
import Alamofire

let kTinyPNGCompressHost: String = "https://api.tinify.com/shrink"

public struct TinyPNGUploadService {
    /// 画像をアップロード
    /// - Parameter url: アップロードする画像のurl
    static func uploadFile(with url: URL, apiKey: String, responseCallback: ((UploadResponseItem?) -> Void)?) {
        let needBase64Str = "api:" + apiKey
        let authStr = "Basic " + needBase64Str.toBase64()
        let header: HTTPHeaders = [
            "Authorization": authStr,
        ]
        
        AF.upload(url, to: kTinyPNGCompressHost, method: .post, headers: header)
        .responseString(completionHandler: { response in
            print(response)
            // Fixed-Me:
            responseCallback?(nil) 
        })
    }
}

extension String {
    func fromBase64() -> String? {
        guard let data = Data(base64Encoded: self) else {
            return nil
        }

        return String(data: data, encoding: .utf8)
    }

    func toBase64() -> String {
        return Data(self.utf8).base64EncodedString()
    }
}

@IBAction func compressAction(_ sender: Any) {
     guard let urls = fileUrls, urls.count > 0 else {
         _privateShowAlert(with: "圧縮するパスを選択してください")
         return
     }
     
     let apiKey = keyTF.stringValue
     guard apiKey.count > 0 else {
         _privateShowAlert(with: "TinyPNGのAPIKeyを入力してください")
         return
     }
     
     _privateIncatorAnimate(true)
     
     let group = DispatchGroup()
     
     let fileManager = FileManager.default
     for url in urls {
         let urlStr = url.absoluteString
         if urlStr.hasSuffix("/") {
             // "/"で終わる場合はディレクトリを示します
             let dirEnumator = fileManager.enumerator(at: url, includingPropertiesForKeys: nil)
             while let subFileUrl = dirEnumator?.nextObject() as? URL {
                 print(subFileUrl)
                 if _privateIsSupportImageType(subFileUrl.pathExtension) {
                     group.enter()
                     _privateCompressImage(with: subFileUrl, apiKey: apiKey) {
                         
                         group.leave()
                     }
                 }
             }
         }
         else if _privateIsSupportImageType(url.pathExtension) {
             print(url)
             group.enter()
             _privateCompressImage(with: url, apiKey: apiKey) {
                 
                 group.leave()
             }
         }
     }
     
     group.notify(queue: DispatchQueue.main) {
         self._privateIncatorAnimate(false)
     }
 }

 fileprivate func _privateIncatorAnimate(_ isShow: Bool) {
     indicatorView.isHidden = !isShow
     if isShow {
         indicatorView.startAnimation(self)
     }
     else {
         indicatorView.stopAnimation(self)
     }
 }
 
 /// APIを呼び出して画像を圧縮
 fileprivate func _privateCompressImage(with url: URL, apiKey: String, callback: (() -> Void)?) {
     TinyPNGUploadService.uploadFile(with: url, apiKey: apiKey, responseCallback: { uploadResItem in
            let str = url.absoluteString + "圧縮が完了しました\n"
            self.resultOutput += str
            self.contentTextView.string = self.resultOutput

         callback?()
     })
 }
 
 /// 圧縮をサポートする画像形式かを判断
 fileprivate func _privateIsSupportImageType(_ typeStr: String) -> Bool {
     let supportLists: [String] = [
         "jpeg",
         "JPEG",
         "jpg",
         "JPG",
         "png",
         "PNG",
         "webp",
         "WEBP",
     ]
     
     if supportLists.contains(typeStr) {
         return true
     }
     else {
         return false
     }
 }

     /// アラートダイアログ
 fileprivate func _privateShowAlert(with str: String) {
     let alert = NSAlert()
     alert.messageText = str
     alert.addButton(withTitle: "OK")
     alert.beginSheetModal(for: NSApplication.shared.keyWindow!)
 }

{
    "input": {
        "size": 2129441,
        "type": "image/png"
    },
    "output": {
        "size": 185115,
        "type": "image/png",
        "width": 750,
        "height": 1334,
        "ratio": 0.0869,
        "url": "https://api.tinify.com/output/59dt7ar44cvau1tmnhpfhp42f35bdpd7"
    }
}

import Foundation

struct UploadResponseItem: Codable {
    var input: UploadReponseInputItem
    var output: UploadResponseOutputItem
}

struct UploadReponseInputItem: Codable {
    var size: CLongLong
    var type: String
}

struct UploadResponseOutputItem: Codable {
    var size: CLongLong
    var type: String
    var width: CLongLong
    var height: CLongLong
    var ratio: Double
    var url: String
}

public struct TinyPNGUploadService {
    /// 画像をアップロード
    /// - Parameter url: アップロードする画像のurl
    static func uploadFile(with url: URL, apiKey: String, responseCallback: ((UploadResponseItem?) -> Void)?) {
        let needBase64Str = "api:" + apiKey
        let authStr = "Basic " + needBase64Str.toBase64()
        let header: HTTPHeaders = [
            "Authorization": authStr,
        ]
        
        AF.upload(url, to: kTinyPNGCompressHost, method: .post, headers: header)
//        .responseString(completionHandler: { response in
//            print(response)
//            responseCallback?(nil)
//        })
        .responseDecodable(of: UploadResponseItem.self) { response in
            switch response.result {
            case .success(let item):
                responseCallback?(item)
            case .failure(let error):
                print(error)
                responseCallback?(nil)
            }
        }
    }
}

import Foundation

public extension String {
    func tinyPNGAuthFormatStr() -> String {
        let needBase64Str = "api:" + self
        let authStr = "Basic " + needBase64Str.toBase64()
        return authStr
    }
    
    func fromBase64() -> String? {
        guard let data = Data(base64Encoded: self) else {
            return nil
        }

        return String(data: data, encoding: .utf8)
    }

    func toBase64() -> String {
        return Data(self.utf8).base64EncodedString()
    }

}

        
        let authStr = apiKey.tinyPNGAuthFormatStr()

import Foundation
import AppKit
import Alamofire

public struct TinyPNGDownloadService {
    
    /// 画像をダウンロード
    /// - Parameters:
    ///   - url: ダウンロードする画像リンク
    ///   - destinationURL: ダウンロード後の画像の保存位置
    ///   - apiKey: tinypngのAPIKey
    ///   - responseCallback: 結果のコールバック
    static func downloadFile(with url: URL, to destinationURL: URL, apiKey: String, responseCallback: (() -> Void)?) {
        let authStr = apiKey.tinyPNGAuthFormatStr()
        let header: HTTPHeaders = [
            "Authorization": authStr,
            "Content-type": "application/json"
        ]
        
        let destination: DownloadRequest.Destination = { _, _ in
         return (destinationURL, [.createIntermediateDirectories, .removePreviousFile])
        }

        AF.download(url, method: .post, headers: header, to: destination)
            .response { response in
                switch response.result {
                case .success(_):
                    responseCallback?()
                case .failure(let error):
                    print(error)
                    responseCallback?()
                }
            }
    }
}

    fileprivate var isSamePath: Bool = true // デフォルトは同じパス

    /// チェックボタンの選択状態
    @IBAction func checkBtnAction(_ sender: NSButton) {
        print(sender.state)
        isSamePath = (sender.state == .on)
    }

/// APIを呼び出して画像を圧縮
    fileprivate func _privateCompressImage(with url: URL, apiKey: String, callback: (() -> Void)?) {
        TinyPNGUploadService.uploadFile(with: url, apiKey: apiKey, responseCallback: { uploadResItem in
            if let tempUrlStr = uploadResItem?.output.url,
               let tempUrl = URL(string: tempUrlStr) {
                let destinationUrl = self._privateGetDownloadDestinationPath(from: url)
                TinyPNGDownloadService.downloadFile(with: tempUrl,
                                                    to: destinationUrl,
                                                    apiKey: apiKey) {
                    self._privateUpdateContentOutDisplay(with: url)
                    callback?()
                }
            }
            else {
                self._privateUpdateContentOutDisplay(with: url)
                callback?()
            }
        })
    }
    
    /// 出力表示を更新
    fileprivate func _privateUpdateContentOutDisplay(with url: URL) {
        let str = url.absoluteString + "圧縮が完了しました\n"
        self.resultOutput += str
        self.contentTextView.string = self.resultOutput
    }
    
    /// ダウンロードファイルの保存先を取得
    fileprivate func _privateGetDownloadDestinationPath(from url: URL) -> URL {
        if isSamePath {
            // 元のファイルを直接置き換え
            return url
        }
        else {
            // ファイルディレクトリ内にoutputフォルダを新規作成し、outputに保存
            let fileName = url.lastPathComponent
            let subFolderPath = String(format: "output/%@", fileName)
            let destinationUrl = URL(fileURLWithPath: subFolderPath, relativeTo: url)
            return destinationUrl
        }
    }

    fileprivate var totalCompressSize: CLongLong = 0 // 合計圧縮サイズ

    @IBAction func compressAction(_ sender: Any) {
        
        ...

        group.notify(queue: DispatchQueue.main) {
            self.resultOutput += String(format: "\n 合計：以前と比べて共に圧縮されたのは%ldKb", self.totalCompressSize/1024)
            self.contentTextView.string = self.resultOutput
            self._privateIncatorAnimate(false)
        }
    }


  /// APIを呼び出して画像を圧縮
    fileprivate func _privateCompressImage(with url: URL, apiKey: String, callback: (() -> Void)?) {
        TinyPNGUploadService.uploadFile(with: url, apiKey: apiKey, responseCallback: { uploadResItem in
            let compressSize = (uploadResItem?.input.size ?? 0) - (uploadResItem?.output.size ?? 0)
            self.totalCompressSize += compressSize
            
            self._privateUpdateContentOutDisplay(with: url, isCompressCompleted: false, item: uploadResItem?.output)
            if let tempUrlStr = uploadResItem?.output.url,
               let tempUrl = URL(string: tempUrlStr) {
                let destinationUrl = self._privateGetDownloadDestinationPath(from: url)
                TinyPNGDownloadService.downloadFile(with: tempUrl,
                                                    to: destinationUrl,
                                                    apiKey: apiKey) {
                    self._privateUpdateContentOutDisplay(with: url, isCompressCompleted: true, item: uploadResItem?.output)
                    callback?()
                }
            }
            else {
                callback?()
            }
        })
    }
    
    /// 出力表示を更新
    fileprivate func _privateUpdateContentOutDisplay(with url: URL, isCompressCompleted: Bool, item: UploadResponseOutputItem?) {
        var suffixStr: String = ""
        if let outputItem = item {
            let ratio = 1.0 - outputItem.ratio
            suffixStr = "圧縮が完了しました、圧縮したのは: " + String(format: "%.0f", ratio*100) + "%のサイズ\n"
            if isCompressCompleted {
                suffixStr = String(format: "書き込みが完了しました、最終的なサイズは約:%.ldKb \n", outputItem.size/1024)
            }
        }
        else {
            suffixStr = "圧縮が完了しました\n"
            if isCompressCompleted {
                suffixStr = "書き込みが完了しました\n"
            }
        }

        let str = url.absoluteString + suffixStr
        self.resultOutput += str
        self.contentTextView.string = self.resultOutput
    }