Add OPML Export for SwiftUI

iOS/Settings/SettingsSubscriptionsExportDocumentPickerView.swift

@@ -0,0 +1,31 @@
+//
+//  SettingsSubscriptionsExportDocumentPickerView.swift
+//  NetNewsWire-iOS
+//
+//  Created by Maurice Parker on 6/16/19.
+//  Copyright © 2019 Ranchero Software. All rights reserved.
+//
+
+import SwiftUI
+import Account
+
+struct SettingsSubscriptionsExportDocumentPickerView : UIViewControllerRepresentable {
+	var account: Account
+
+	func makeUIViewController(context: UIViewControllerRepresentableContext<SettingsSubscriptionsExportDocumentPickerView>) ->   UIDocumentPickerViewController {
+		
+		let accountName = account.nameForDisplay.replacingOccurrences(of: " ", with: "").trimmingCharacters(in: .whitespaces)
+		let filename = "Subscriptions-\(accountName).opml"
+		let tempFile = FileManager.default.temporaryDirectory.appendingPathComponent(filename)
+		
+		let opmlString = OPMLExporter.OPMLString(with: account, title: filename)
+		try? opmlString.write(to: tempFile, atomically: true, encoding: String.Encoding.utf8)
+		
+		return UIDocumentPickerViewController(url: tempFile, in: .exportToService)
+	}
+	
+	func updateUIViewController(_ uiViewController: UIDocumentPickerViewController, context: UIViewControllerRepresentableContext<SettingsSubscriptionsExportDocumentPickerView>) {
+		//
+	}
+	
+}

iOS/Settings/SettingsSubscriptionsImportDocumentPickerView.swift

@@ -1,5 +1,5 @@
 //
-//  SettingsImportSubscriptionsDocumentPickerView.swift
+//  SettingsSubscriptionsImportDocumentPickerView.swift
 //  NetNewsWire-iOS
 //
 //  Created by Maurice Parker on 6/16/19.
@@ -9,17 +9,16 @@
 import SwiftUI
 import Account
 
-struct SettingsImportSubscriptionsDocumentPickerView : UIViewControllerRepresentable {
-	var account: Account?
+struct SettingsSubscriptionsImportDocumentPickerView : UIViewControllerRepresentable {
+	var account: Account
 	
-	func makeUIViewController(context: UIViewControllerRepresentableContext<SettingsImportSubscriptionsDocumentPickerView>) -> UIDocumentPickerViewController {
+	func makeUIViewController(context: UIViewControllerRepresentableContext<SettingsSubscriptionsImportDocumentPickerView>) -> UIDocumentPickerViewController {
 		let docPicker = UIDocumentPickerViewController(documentTypes: ["public.xml", "org.opml.opml"], in: .import)
 		docPicker.delegate = context.coordinator
-		docPicker.modalPresentationStyle = .formSheet
 		return docPicker
 	}
 	
-	func updateUIViewController(_ uiViewController: UIDocumentPickerViewController, context: UIViewControllerRepresentableContext<SettingsImportSubscriptionsDocumentPickerView>) {
+	func updateUIViewController(_ uiViewController: UIDocumentPickerViewController, context: UIViewControllerRepresentableContext<SettingsSubscriptionsImportDocumentPickerView>) {
 		//
 	}
 	
@@ -28,25 +27,17 @@ struct SettingsImportSubscriptionsDocumentPickerView : UIViewControllerRepresent
 	}
 	
 	class Coordinator : NSObject, UIDocumentPickerDelegate {
-		var parent: SettingsImportSubscriptionsDocumentPickerView
+		var parent: SettingsSubscriptionsImportDocumentPickerView
 		
-		init(_ view: SettingsImportSubscriptionsDocumentPickerView) {
+		init(_ view: SettingsSubscriptionsImportDocumentPickerView) {
 			self.parent = view
 		}
 		
 		func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) {
 			for url in urls {
-				parent.account?.importOPML(url) { result in}
+				parent.account.importOPML(url) { result in}
 			}
 		}
 		
 	}
 }
-
-#if DEBUG
-struct SettingsImportSubscriptionsDocumentPickerView_Previews : PreviewProvider {
-    static var previews: some View {
-        SettingsImportSubscriptionsDocumentPickerView()
-    }
-}
-#endif

iOS/Settings/SettingsView.swift

@@ -14,9 +14,10 @@ import Account
 
 struct SettingsView : View {
 	@ObjectBinding var viewModel: ViewModel
-	@State var importSubscriptionsAccounts: ActionSheet? = nil
-	@State var importSubscriptionsDocumentPicker: Modal? = nil
-	@State var showExportSubscriptions = false
+	@State var subscriptionsImportAccounts: ActionSheet? = nil
+	@State var subscriptionsImportDocumentPicker: Modal? = nil
+	@State var subscriptionsExportAccounts: ActionSheet? = nil
+	@State var subscriptionsExportDocumentPicker: Modal? = nil
 
     var body: some View {
 		NavigationView {
@@ -68,18 +69,19 @@ struct SettingsView : View {
 						}
 					}
 					Button(action: {
-						self.importSubscriptionsAccounts = self.createImportSubscriptionsAccounts
+						self.subscriptionsImportAccounts = self.createSubscriptionsImportAccounts
 					}) {
 						Text("Import Subscriptions...")
 					}
-					.presentation(importSubscriptionsAccounts)
-					.presentation(importSubscriptionsDocumentPicker)
+						.presentation(subscriptionsImportAccounts)
+						.presentation(subscriptionsImportDocumentPicker)
 					Button(action: {
-						self.showExportSubscriptions = true
+						self.subscriptionsExportAccounts = self.createSubscriptionsExportAccounts
 					}) {
 						Text("Export Subscriptions...")
 					}
-					.presentation(showExportSubscriptions ? exportSubscriptionsAccounts : nil)
+						.presentation(subscriptionsExportAccounts)
+						.presentation(subscriptionsExportDocumentPicker)
 				}
 				.foregroundColor(.primary)
 
@@ -90,29 +92,29 @@ struct SettingsView : View {
 		}
     }
 	
-	var createImportSubscriptionsAccounts: ActionSheet {
+	var createSubscriptionsImportAccounts: ActionSheet {
 		var buttons = [ActionSheet.Button]()
 		for account in viewModel.accounts {
 			let button = ActionSheet.Button.default(Text(verbatim: account.nameForDisplay)) {
-				self.importSubscriptionsAccounts = nil
-				self.importSubscriptionsDocumentPicker = Modal(SettingsImportSubscriptionsDocumentPickerView(account: account))
+				self.subscriptionsImportAccounts = nil
+				self.subscriptionsImportDocumentPicker = Modal(SettingsSubscriptionsImportDocumentPickerView(account: account))
 			}
 			buttons.append(button)
 		}
-		buttons.append(.cancel { self.importSubscriptionsAccounts = nil })
+		buttons.append(.cancel { self.subscriptionsImportAccounts = nil })
 		return ActionSheet(title: Text("Import Subscriptions..."), message: Text("Select the account to import your OPML file into."), buttons: buttons)
 	}
 	
-	var exportSubscriptionsAccounts: ActionSheet {
+	var createSubscriptionsExportAccounts: ActionSheet {
 		var buttons = [ActionSheet.Button]()
 		for account in viewModel.accounts {
 			let button = ActionSheet.Button.default(Text(verbatim: account.nameForDisplay)) {
-				self.showExportSubscriptions = false
-				// Call doc picker here...
+				self.subscriptionsExportAccounts = nil
+				self.subscriptionsExportDocumentPicker = Modal(SettingsSubscriptionsExportDocumentPickerView(account: account))
 			}
 			buttons.append(button)
 		}
-		buttons.append(.cancel { self.showExportSubscriptions = false })
+		buttons.append(.cancel { self.subscriptionsExportAccounts = nil })
 		return ActionSheet(title: Text("Export Subscriptions..."), message: Text("Select the account to export out of."), buttons: buttons)
 	}