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Pocket Poster/Extensions/Views/Alert++.swift

@@ -0,0 +1,74 @@
+//
+//  Alert++.swift
+//  Cowabunga
+//
+//  Created by sourcelocation on 30/01/2023.
+//
+
+import UIKit
+
+// credit: sourcelocation & TrollTools
+var currentUIAlertController: UIAlertController?
+var lastDismissTitle: String?
+
+
+fileprivate let errorString = NSLocalizedString("Error", comment: "")
+fileprivate let okString = NSLocalizedString("OK", comment: "")
+fileprivate let cancelString = NSLocalizedString("Cancel", comment: "")
+
+extension UIApplication {
+    
+    func dismissAlert(animated: Bool) {
+        DispatchQueue.main.async {
+            lastDismissTitle = currentUIAlertController?.title
+            currentUIAlertController?.dismiss(animated: animated)
+        }
+    }
+    func alert(title: String = errorString, body: String, animated: Bool = true, withButton: Bool = true) {
+        DispatchQueue.main.async {
+            var body = body
+            
+            if title == errorString {
+                // append debug info
+                let device = UIDevice.current
+                let appVersion = Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String ?? ""
+                let appBuild = Bundle.main.infoDictionary?["CFBundleVersion"] as? String ?? ""
+                let systemVersion = device.systemVersion
+                body += "\n\(device.systemName) \(systemVersion), v\(appVersion) build \(appBuild)"
+            }
+            
+            currentUIAlertController = UIAlertController(title: title, message: body, preferredStyle: .alert)
+            if withButton { currentUIAlertController?.addAction(.init(title: okString, style: .cancel)) }
+            self.present(alert: currentUIAlertController!)
+        }
+    }
+    func confirmAlert(title: String = errorString, body: String, confirmTitle: String = okString, onOK: @escaping () -> (), noCancel: Bool) {
+        DispatchQueue.main.async {
+            currentUIAlertController = UIAlertController(title: title, message: body, preferredStyle: .alert)
+            if !noCancel {
+                currentUIAlertController?.addAction(.init(title: cancelString, style: .cancel))
+            }
+            currentUIAlertController?.addAction(.init(title: confirmTitle, style: noCancel ? .cancel : .default, handler: { _ in
+                onOK()
+            }))
+            self.present(alert: currentUIAlertController!)
+        }
+    }
+    func change(title: String = errorString, body: String) {
+        DispatchQueue.main.async {
+            currentUIAlertController?.title = title
+            currentUIAlertController?.message = body
+        }
+    }
+    
+    func present(alert: UIAlertController) {
+        if let window = UIApplication.shared.connectedScenes.map({ $0 as? UIWindowScene }).compactMap({ $0 }).first?.windows.first, var topController = window.rootViewController {
+            while let presentedViewController = topController.presentedViewController, presentedViewController.title != lastDismissTitle {
+                topController = presentedViewController
+            }
+            
+            topController.present(alert, animated: true)
+            // topController should now be your topmost view controller
+        }
+    }
+}