Avoid systematic crashes when things go wrong + better email management

LeCountdown.xcodeproj/project.pbxproj

@@ -126,6 +126,7 @@
 		C4742B59298411E800D5D950 /* CountdownFormView.swift in Sources */ = {isa = PBXBuildFile; fileRef = C4742B58298411E800D5D950 /* CountdownFormView.swift */; };
 		C4742B5B298414B000D5D950 /* ImageSelectionView.swift in Sources */ = {isa = PBXBuildFile; fileRef = C4742B5A298414B000D5D950 /* ImageSelectionView.swift */; };
 		C4742B5F2984205000D5D950 /* ViewModifiers.swift in Sources */ = {isa = PBXBuildFile; fileRef = C4742B5E2984205000D5D950 /* ViewModifiers.swift */; };
+		C47A9AF32AD1B32C00618A50 /* URLs.swift in Sources */ = {isa = PBXBuildFile; fileRef = C47A9AF22AD1B32C00618A50 /* URLs.swift */; };
 		C47C933529F01B5E00C780E2 /* FileLogger.swift in Sources */ = {isa = PBXBuildFile; fileRef = C4556F6A29E40B7800DEB40B /* FileLogger.swift */; };
 		C47C933629F01B6600C780E2 /* FileUtils.swift in Sources */ = {isa = PBXBuildFile; fileRef = C4556F6E29E40BED00DEB40B /* FileUtils.swift */; };
 		C47C933729F01B7A00C780E2 /* Codable+Extensions.swift in Sources */ = {isa = PBXBuildFile; fileRef = C4556F7029E40DCF00DEB40B /* Codable+Extensions.swift */; };
@@ -434,6 +435,7 @@
 		C4742B58298411E800D5D950 /* CountdownFormView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CountdownFormView.swift; sourceTree = "<group>"; };
 		C4742B5A298414B000D5D950 /* ImageSelectionView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ImageSelectionView.swift; sourceTree = "<group>"; };
 		C4742B5E2984205000D5D950 /* ViewModifiers.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ViewModifiers.swift; sourceTree = "<group>"; };
+		C47A9AF22AD1B32C00618A50 /* URLs.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = URLs.swift; sourceTree = "<group>"; };
 		C47C933829F13BD100C780E2 /* AppleMusicPickerView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppleMusicPickerView.swift; sourceTree = "<group>"; };
 		C47C933C29F13DBD00C780E2 /* en */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = en; path = en.lproj/InfoPlist.strings; sourceTree = "<group>"; };
 		C48940DD2AC307860086F4FA /* GoogleService-Info.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; path = "GoogleService-Info.plist"; sourceTree = "<group>"; };
@@ -779,6 +781,7 @@
 				C4060DF4297AE9A7003FAB80 /* TimeInterval+Extensions.swift */,
 				C473C33B29ACEC4F0056B38A /* Tip.swift */,
 				C4BA2B7829A65C1400CB4FBA /* UIDevice+Extensions.swift */,
+				C47A9AF22AD1B32C00618A50 /* URLs.swift */,
 			);
 			path = Utils;
 			sourceTree = "<group>";
@@ -1349,6 +1352,7 @@
 				C4F8B17A298AC234005C86A5 /* Countdown+CoreDataClass.swift in Sources */,
 				C42E970229E6B32B005B1B8C /* CalendarView.swift in Sources */,
 				C4BA2B0F299BE61E00CB4FBA /* Interval+CoreDataClass.swift in Sources */,
+				C47A9AF32AD1B32C00618A50 /* URLs.swift in Sources */,
 				C4F8B164298A9A92005C86A5 /* AlarmFormView.swift in Sources */,
 				C4286EB02A1B75AB0070D075 /* BoringContext.swift in Sources */,
 				C40FDB622992985C0042A390 /* TextToSpeechRecorder.swift in Sources */,

LeCountdown/AppDelegate.swift

@@ -90,8 +90,9 @@ extension AppDelegate: UNUserNotificationCenterDelegate {
 
         print("didReceive notification")
         FileLogger.log("userNotificationCenter didReceive > cancelling sound player")
-        let timerId = self._timerId(notificationId: response.notification.request.identifier)
-        Conductor.maestro.cancelSoundPlayer(id: timerId)
+        if let timerId = self._timerId(notificationId: response.notification.request.identifier) {
+            Conductor.maestro.cancelSoundPlayer(id: timerId)
+        }
     }
     
     func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
@@ -102,13 +103,13 @@ extension AppDelegate: UNUserNotificationCenterDelegate {
 //        Conductor.maestro.notifyUser(countdownId: timerId)
     }
     
-    fileprivate func _timerId(notificationId: String) -> TimerID {
+    fileprivate func _timerId(notificationId: String) -> TimerID? {
         let components = notificationId.components(separatedBy: CountdownScheduler.notificationIdSeparator)
         if components.count == 2 {
             return components[0]
         } else {
-            FileLogger.log("app terminated by ourselves")
-            fatalError("bad notification format : \(notificationId)")
+            FileLogger.log("Couldn't parse notification Id: \(notificationId)")
+            return nil
         }
     }
     

LeCountdown/Model/Model+SharedExtensions.swift

@@ -27,8 +27,7 @@ extension AbstractTimer {
         if let url = URL(string: self.stringId) {
             return url
         } else {
-//            FileLogger.log("app terminated by ourselves")
-            fatalError("Can't produce url with \(self.stringId)")
+            return URL(filePath: "") // dummy URL to avoid the pain of dealing with optional/error
         }
     }
     

LeCountdown/Utils/URLs.swift

@@ -0,0 +1,12 @@
+//
+//  URLs.swift
+//  LeCountdown
+//
+//  Created by Laurent Morvillier on 07/10/2023.
+//
+
+import Foundation
+
+enum URLs: String {
+    case mail = "hello@getenchanted.app"
+}

LeCountdown/Views/Reusable/MailView.swift

@@ -33,10 +33,11 @@ struct MailView: UIViewControllerRepresentable {
     }
 
     func makeUIViewController(context: UIViewControllerRepresentableContext<MailView>) -> MFMailComposeViewController {
+        
         let vc = MFMailComposeViewController()
         vc.mailComposeDelegate = context.coordinator
         vc.setSubject(Bundle.main.applicationName)
-        vc.setToRecipients(["hello@getenchanted.app"])
+        vc.setToRecipients([URLs.mail.rawValue])
         
         let lastLogs = FileLogger.main.logs.suffix(40).reversed()
         let logs = lastLogs.map { $0.date.formattedDateTime + "\n" + $0.content }

LeCountdown/Views/SettingsView.swift

@@ -6,6 +6,7 @@
 //
 
 import SwiftUI
+import MessageUI
 
 struct SettingsView: View {
     
@@ -15,6 +16,7 @@ struct SettingsView: View {
     
     @State var showMailView: Bool = false
     @State var showLogsSheet: Bool = false
+    @State var emailCopied: Bool = false
 
     var body: some View {
         
@@ -36,11 +38,26 @@ struct SettingsView: View {
                     })
                     .frame(width: 120.0)
             }
-            Button {
-                self.showMailView = true
-            } label: {
-                Text("Contact us")
+            
+            if MFMailComposeViewController.canSendMail() {
+                Button {
+                    self.showMailView = true
+                } label: {
+                    Text("Contact us")
+                }
+            } else {
+                if self.emailCopied {
+                    Label("Copied", systemImage: "checkmark")
+                } else {
+                    Button {
+                        UIPasteboard.general.string = URLs.mail.rawValue
+                        self.emailCopied = true
+                    } label: {
+                        LabeledContent("Contact us", value: "tap to copy email")
+                    }
+                }
             }
+            
             Button {
                 withAnimation {
                     self.showLogsSheet.toggle()