Adds altstore://install?url=[link] deep link to install remote .ipa’s

AltStore/My Apps/MyAppsViewController.swift

@@ -32,6 +32,7 @@ extension MyAppsViewController
 class MyAppsViewController: UICollectionViewController
 {
     private let coordinator = NSFileCoordinator()
+    private let operationQueue = OperationQueue()
     
     private lazy var dataSource = self.makeDataSource()
     private lazy var noUpdatesDataSource = self.makeNoUpdatesDataSource()
@@ -694,14 +695,157 @@ private extension MyAppsViewController
         self.present(documentPickerViewController, animated: true, completion: nil)
     }
     
-    func sideloadApp(at fileURL: URL, completion: @escaping (Result<Void, Error>) -> Void)
+    func sideloadApp(at url: URL, completion: @escaping (Result<Void, Error>) -> Void)
     {
-        let temporaryDirectory = FileManager.default.uniqueTemporaryURL()
+        let progress = Progress.discreteProgress(totalUnitCount: 100)
         
         self.navigationItem.leftBarButtonItem?.isIndicatingActivity = true
         
-        func finish(_ result: Result<ALTApplication, Error>)
+        class Context
         {
+            var fileURL: URL?
+            var application: ALTApplication?
+            var installedApp: InstalledApp? {
+                didSet {
+                    self.installedAppContext = self.installedApp?.managedObjectContext
+                }
+            }
+            private var installedAppContext: NSManagedObjectContext?
+            
+            var error: Error?
+        }
+        
+        let temporaryDirectory = FileManager.default.uniqueTemporaryURL()
+        let unzippedAppDirectory = temporaryDirectory.appendingPathComponent("App")
+        
+        let context = Context()
+        
+        let downloadOperation: RSTAsyncBlockOperation?
+        
+        if url.isFileURL
+        {
+            downloadOperation = nil
+            context.fileURL = url
+            progress.totalUnitCount -= 20
+        }
+        else
+        {
+            let downloadProgress = Progress.discreteProgress(totalUnitCount: 100)
+            downloadOperation = RSTAsyncBlockOperation { (operation) in
+                let downloadTask = URLSession.shared.downloadTask(with: url) { (fileURL, response, error) in
+                    do
+                    {
+                        let (fileURL, _) = try Result((fileURL, response), error).get()
+                        
+                        try FileManager.default.createDirectory(at: temporaryDirectory, withIntermediateDirectories: true, attributes: nil)
+                        
+                        let destinationURL = temporaryDirectory.appendingPathComponent("App.ipa")
+                        try FileManager.default.moveItem(at: fileURL, to: destinationURL)
+                        
+                        context.fileURL = destinationURL
+                    }
+                    catch
+                    {
+                        context.error = error
+                    }
+                    operation.finish()
+                }
+                downloadProgress.addChild(downloadTask.progress, withPendingUnitCount: 100)
+                downloadTask.resume()
+            }
+            progress.addChild(downloadProgress, withPendingUnitCount: 20)
+        }
+        
+        let unzipProgress = Progress.discreteProgress(totalUnitCount: 1)
+        let unzipAppOperation = BlockOperation {
+            do
+            {
+                if let error = context.error
+                {
+                    throw error
+                }
+                
+                guard let fileURL = context.fileURL else { throw OperationError.invalidParameters }
+                
+                try FileManager.default.createDirectory(at: unzippedAppDirectory, withIntermediateDirectories: true, attributes: nil)
+                let unzippedApplicationURL = try FileManager.default.unzipAppBundle(at: fileURL, toDirectory: unzippedAppDirectory)
+                
+                guard let application = ALTApplication(fileURL: unzippedApplicationURL) else { throw OperationError.invalidApp }
+                context.application = application
+                
+                unzipProgress.completedUnitCount = 1
+            }
+            catch
+            {
+                context.error = error
+            }
+        }
+        progress.addChild(unzipProgress, withPendingUnitCount: 10)
+        
+        if let downloadOperation = downloadOperation
+        {
+            unzipAppOperation.addDependency(downloadOperation)
+        }
+        
+        let removeAppExtensionsProgress = Progress.discreteProgress(totalUnitCount: 1)
+        let removeAppExtensionsOperation = RSTAsyncBlockOperation { [weak self] (operation) in
+            do
+            {
+                if let error = context.error
+                {
+                    throw error
+                }
+                
+                guard let application = context.application else { throw OperationError.invalidParameters }
+                
+                DispatchQueue.main.async {
+                    self?.removeAppExtensions(from: application) { (result) in
+                        switch result
+                        {
+                        case .success: removeAppExtensionsProgress.completedUnitCount = 1
+                        case .failure(let error): context.error = error
+                        }
+                        operation.finish()
+                    }
+                }
+            }
+            catch
+            {
+                context.error = error
+                operation.finish()
+            }
+        }
+        removeAppExtensionsOperation.addDependency(unzipAppOperation)
+        progress.addChild(removeAppExtensionsProgress, withPendingUnitCount: 5)
+        
+        let installProgress = Progress.discreteProgress(totalUnitCount: 100)
+        let installAppOperation = RSTAsyncBlockOperation { (operation) in
+            do
+            {
+                if let error = context.error
+                {
+                    throw error
+                }
+                
+                guard let application = context.application else { throw OperationError.invalidParameters }
+                
+                let progress = AppManager.shared.install(application, presentingViewController: self) { (result) in
+                    switch result
+                    {
+                    case .success(let installedApp): context.installedApp = installedApp
+                    case .failure(let error): context.error = error
+                    }
+                    operation.finish()
+                }
+                installProgress.addChild(progress, withPendingUnitCount: 100)
+            }
+            catch
+            {
+                context.error = error
+                operation.finish()
+            }
+        }
+        installAppOperation.completionBlock = {
             try? FileManager.default.removeItem(at: temporaryDirectory)
             
             DispatchQueue.main.async {
@@ -709,13 +853,17 @@ private extension MyAppsViewController
                 self.sideloadingProgressView.observedProgress = nil
                 self.sideloadingProgressView.setHidden(true, animated: true)
                 
-                switch result
+                switch Result(context.installedApp, context.error)
                 {
                 case .success(let app):
-                    print("Successfully installed app:", app.bundleIdentifier)
                     completion(.success(()))
                     
-                case .failure(OperationError.cancelled): break
+                    app.managedObjectContext?.perform {
+                        print("Successfully installed app:", app.bundleIdentifier)
+                    }
+                    
+                case .failure(OperationError.cancelled):
+                    completion(.failure((OperationError.cancelled)))
                     
                 case .failure(let error):
                     let toastView = ToastView(error: error)
@@ -725,68 +873,16 @@ private extension MyAppsViewController
                 }
             }
         }
+        progress.addChild(installProgress, withPendingUnitCount: 65)
+        installAppOperation.addDependency(removeAppExtensionsOperation)
         
-        DispatchQueue.global().async {
-            do
-            {
-                try FileManager.default.createDirectory(at: temporaryDirectory, withIntermediateDirectories: true, attributes: nil)
-                
-                let unzippedApplicationURL = try FileManager.default.unzipAppBundle(at: fileURL, toDirectory: temporaryDirectory)
-                
-                guard let application = ALTApplication(fileURL: unzippedApplicationURL) else { throw OperationError.invalidApp }
-                
-                func install()
-                {
-                    self.sideloadingProgress = AppManager.shared.install(application, presentingViewController: self) { (result) in
-                        finish(result.map { _ in application })
-                    }
-                    
-                    DispatchQueue.main.async {
-                        self.sideloadingProgressView.progress = 0
-                        self.sideloadingProgressView.isHidden = false
-                        self.sideloadingProgressView.observedProgress = self.sideloadingProgress
-                    }
-                }
-                
-                if !application.appExtensions.isEmpty
-                {
-                    DispatchQueue.main.async {
-                        let alertController = UIAlertController(title: NSLocalizedString("App Contains Extensions", comment: ""), message: NSLocalizedString("Free developer accounts are limited to 3 active apps and app extensions. Would you like to remove this app's app extensions so they don't count towards your limit?", comment: ""), preferredStyle: .alert)
-                        alertController.addAction(UIAlertAction(title: UIAlertAction.cancel.title, style: UIAlertAction.cancel.style, handler: { (action) in
-                            finish(.failure(OperationError.cancelled))
-                        }))
-                        alertController.addAction(UIAlertAction(title: NSLocalizedString("Keep App Extensions", comment: ""), style: .default) { (action) in
-                            install()
-                        })
-                        alertController.addAction(UIAlertAction(title: NSLocalizedString("Remove App Extensions", comment: ""), style: .destructive) { (action) in
-                            do
-                            {
-                                for appExtension in application.appExtensions
-                                {
-                                    try FileManager.default.removeItem(at: appExtension.fileURL)
-                                }
-                                
-                                install()
-                            }
-                            catch
-                            {
-                                finish(.failure(error))
-                            }
-                        })
-                        
-                        self.present(alertController, animated: true, completion: nil)
-                    }
-                }
-                else
-                {
-                    install()
-                }
-            }
-            catch
-            {
-                finish(.failure(error))
-            }
-        }
+        self.sideloadingProgress = progress
+        self.sideloadingProgressView.progress = 0
+        self.sideloadingProgressView.isHidden = false
+        self.sideloadingProgressView.observedProgress = self.sideloadingProgress
+        
+        let operations = [downloadOperation, unzipAppOperation, removeAppExtensionsOperation, installAppOperation].compactMap { $0 }
+        self.operationQueue.addOperations(operations, waitUntilFinished: false)
     }
     
     @IBAction func activateApp(_ sender: UIButton)
@@ -834,6 +930,49 @@ private extension MyAppsViewController
         
         cell.bannerView.iconImageView.isIndicatingActivity = false
     }
+    
+    func removeAppExtensions(from application: ALTApplication, completion: @escaping (Result<Void, Error>) -> Void)
+    {
+        guard !application.appExtensions.isEmpty else { return completion(.success(())) }
+        
+        let firstSentence: String
+        
+        if UserDefaults.standard.activeAppLimitIncludesExtensions
+        {
+            firstSentence = NSLocalizedString("Free developer accounts are limited to 3 active apps and app extensions.", comment: "")
+        }
+        else
+        {
+            firstSentence = NSLocalizedString("Free developer accounts are limited to creating 10 App IDs per week.", comment: "")
+        }
+        
+        let message = firstSentence + " " + NSLocalizedString("Would you like to remove this app's extensions so they don't count towards your limit?", comment: "")
+        
+        let alertController = UIAlertController(title: NSLocalizedString("App Contains Extensions", comment: ""), message: message, preferredStyle: .alert)
+        alertController.addAction(UIAlertAction(title: UIAlertAction.cancel.title, style: UIAlertAction.cancel.style, handler: { (action) in
+            completion(.failure(OperationError.cancelled))
+        }))
+        alertController.addAction(UIAlertAction(title: NSLocalizedString("Keep App Extensions", comment: ""), style: .default) { (action) in
+            completion(.success(()))
+        })
+        alertController.addAction(UIAlertAction(title: NSLocalizedString("Remove App Extensions", comment: ""), style: .destructive) { (action) in
+            do
+            {
+                for appExtension in application.appExtensions
+                {
+                    try FileManager.default.removeItem(at: appExtension.fileURL)
+                }
+                
+                completion(.success(()))
+            }
+            catch
+            {
+                completion(.failure(error))
+            }
+        })
+        
+        self.present(alertController, animated: true, completion: nil)
+    }
 }
 
 private extension MyAppsViewController
@@ -1098,12 +1237,14 @@ private extension MyAppsViewController
         // Make sure left UIBarButtonItem has been set.
         self.loadViewIfNeeded()
         
-        guard let fileURL = notification.userInfo?[AppDelegate.importAppDeepLinkURLKey] as? URL else { return }
+        guard let url = notification.userInfo?[AppDelegate.importAppDeepLinkURLKey] as? URL else { return }
         
-        self.sideloadApp(at: fileURL) { (result) in
+        self.sideloadApp(at: url) { (result) in
+            guard url.isFileURL else { return }
+            
             do
             {
-                try FileManager.default.removeItem(at: fileURL)
+                try FileManager.default.removeItem(at: url)
             }
             catch
             {