Show warning alert before continuing import

Fixes #16

Passepartout-iOS/AppDelegate.swift

@@ -95,6 +95,16 @@ class AppDelegate: UIResponder, UIApplicationDelegate, UISplitViewControllerDele
             try? fm.removeItem(at: url)
             return true
         }
+        if let warning = parsedFile.warning {
+            ParsedFile.alertImportWarning(url: url, in: root, withWarning: warning) {
+                if $0 {
+                    self.handleParsedFile(parsedFile, in: root)
+                } else {
+                    try? fm.removeItem(at: url)
+                }
+            }
+            return true
+        }
         handleParsedFile(parsedFile, in: root)
         return true
     }

Passepartout-iOS/Global/SwiftGen+Storyboards.swift

@@ -92,6 +92,7 @@ internal enum StoryboardSegue {
     case disclaimerSegueIdentifier = "DisclaimerSegueIdentifier"
     case importHostSegueIdentifier = "ImportHostSegueIdentifier"
     case selectProfileSegueIdentifier = "SelectProfileSegueIdentifier"
+    case showImportedHostsSegueIdentifier = "ShowImportedHostsSegueIdentifier"
     case versionSegueIdentifier = "VersionSegueIdentifier"
   }
 }

Passepartout-iOS/Scenes/Organizer/ImportedHostsViewController.swift

@@ -42,6 +42,12 @@ class ImportedHostsViewController: UITableViewController {
         title = L10n.ImportedHosts.title
     }
 
+    override func viewWillAppear(_ animated: Bool) {
+        super.viewWillAppear(animated)
+        
+        parsedFile = nil
+    }
+    
     override func viewDidAppear(_ animated: Bool) {
         super.viewDidAppear(animated)
 
@@ -56,22 +62,40 @@ class ImportedHostsViewController: UITableViewController {
             present(alert, animated: true, completion: nil)
             return
         }
+        if let selectedIP = tableView.indexPathForSelectedRow {
+            tableView.deselectRow(at: selectedIP, animated: true)
+        }
     }
     
     // MARK: Actions
     
     override func shouldPerformSegue(withIdentifier identifier: String, sender: Any?) -> Bool {
+
+        // segue parses configuration file if not yet
+        if parsedFile == nil {
             guard let cell = sender as? UITableViewCell, let indexPath = tableView.indexPath(for: cell) else {
                 return false
             }
             let url = pendingConfigurationURLs[indexPath.row]
             guard let parsedFile = ParsedFile.from(url, withErrorAlertIn: self) else {
-            if let selectedIP = tableView.indexPathForSelectedRow {
+                deselectSelectedRow()
-                tableView.deselectRow(at: selectedIP, animated: true)
-            }
                 return false
             }
             self.parsedFile = parsedFile
+
+            // postpone segue until alert dismissal
+            if let warning = parsedFile.warning {
+                ParsedFile.alertImportWarning(url: url, in: self, withWarning: warning) {
+                    self.deselectSelectedRow()
+                    if $0 {
+                        self.perform(segue: StoryboardSegue.Organizer.importHostSegueIdentifier)
+                    } else {
+                        self.parsedFile = nil
+                    }
+                }
+                return false
+            }
+        }
         return true
     }
     
@@ -86,6 +110,12 @@ class ImportedHostsViewController: UITableViewController {
     @IBAction private func close() {
         dismiss(animated: true, completion: nil)
     }
+    
+    private func deselectSelectedRow() {
+        if let selectedIP = tableView.indexPathForSelectedRow {
+            tableView.deselectRow(at: selectedIP, animated: true)
+        }
+    }
 }
 
 extension ImportedHostsViewController {

Passepartout-iOS/Scenes/Organizer/OrganizerViewController.swift

@@ -176,7 +176,7 @@ class OrganizerViewController: UITableViewController, TableModelHost {
     }
 
     private func addNewHost() {
-        perform(segue: StoryboardSegue.Organizer.importHostSegueIdentifier)
+        perform(segue: StoryboardSegue.Organizer.showImportedHostsSegueIdentifier)
     }
 
     private func removeProfile(at indexPath: IndexPath) {

Passepartout-iOS/en.lproj/Organizer.storyboard

@@ -194,7 +194,7 @@
                                     </subviews>
                                 </tableViewCellContentView>
                                 <connections>
-                                    <segue destination="oga-go-FqD" kind="show" id="kwN-PZ-Zg5"/>
+                                    <segue destination="oga-go-FqD" kind="show" identifier="ImportHostSegueIdentifier" id="kwN-PZ-Zg5"/>
                                 </connections>
                             </tableViewCell>
                         </prototypes>
@@ -293,7 +293,7 @@
                     <connections>
                         <segue destination="NVA-bQ-iIE" kind="presentation" identifier="AddProviderSegueIdentifier" modalPresentationStyle="formSheet" id="Win-5U-mIc"/>
                         <segue destination="a3d-vD-Pr7" kind="presentation" identifier="AboutSegueIdentifier" id="fd4-we-46n"/>
-                        <segue destination="z6E-m6-Op0" kind="presentation" identifier="ImportHostSegueIdentifier" modalPresentationStyle="formSheet" id="TZv-OK-8vU"/>
+                        <segue destination="z6E-m6-Op0" kind="presentation" identifier="ShowImportedHostsSegueIdentifier" modalPresentationStyle="formSheet" id="TZv-OK-8vU"/>
                     </connections>
                 </tableViewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="bGp-H5-24W" userLabel="First Responder" sceneMemberID="firstResponder"/>
@@ -567,6 +567,6 @@
     </resources>
     <inferredMetricsTieBreakers>
         <segue reference="HW6-RJ-VFY"/>
-        <segue reference="qQl-B5-moM"/>
+        <segue reference="kwN-PZ-Zg5"/>
     </inferredMetricsTieBreakers>
 </document>