ios: mailto url open

apps/ios/Shared/Views/Onboarding/CreateSimpleXAddress.swift

@@ -36,11 +36,14 @@ struct CreateSimpleXAddress: View {
                             shareQRCodeButton(userAddress)
                                 .frame(maxWidth: .infinity)
 
+                            Spacer()
+
                             if MFMailComposeViewController.canSendMail() {
-                                Spacer()
-                                
                                 shareViaEmailButton(userAddress)
                                     .frame(maxWidth: .infinity)
+                            } else {
+                                shareViaEmailToButton(userAddress)
+                                    .frame(maxWidth: .infinity)
                             }
 
                             Spacer()
@@ -170,6 +173,15 @@ struct CreateSimpleXAddress: View {
         }
     }
 
+    private func shareViaEmailToButton(_ userAddress: UserContactLink) -> some View {
+        Button {
+            UserAddressView.shareUserAddressViaMailTo(userAddress)
+        } label: {
+            Label("Invite friends", systemImage: "envelope")
+                .font(.title2)
+        }
+    }
+
     private func continueButton() -> some View {
         Button {
             withAnimation {
@@ -190,14 +202,14 @@ struct SendAddressMailView: View {
     var userAddress: UserContactLink
 
     var body: some View {
-        let messageBody = """
+        let messageBody = NSLocalizedString("""
             <p>Hi!</p>
             <p><a href="\(userAddress.connReqContact)">Connect to me via SimpleX Chat</a></p>
-            """
+            """, comment: "")
         MailView(
             isShowing: self.$showMailView,
             result: $mailViewResult,
-            subject: "Let's talk in SimpleX Chat",
+            subject: NSLocalizedString("Let's talk in SimpleX Chat", comment: ""),
             messageBody: messageBody
         )
     }

apps/ios/Shared/Views/UserSettings/UserAddressView.swift

@@ -40,7 +40,7 @@ struct UserAddressView: View {
             }
         }
     }
-    
+
     var body: some View {
         ZStack {
             if viaCreateLinkView {
@@ -192,9 +192,13 @@ struct UserAddressView: View {
         Section {
             QRCode(uri: userAddress.connReqContact)
             shareQRCodeButton(userAddress)
+
             if MFMailComposeViewController.canSendMail() {
                 shareViaEmailButton(userAddress)
+            } else {
+                shareViaEmailToButton(userAddress)
             }
+
             shareWithContactsButton()
             autoAcceptToggle()
             learnMoreButton()
@@ -286,6 +290,16 @@ struct UserAddressView: View {
         }
     }
 
+    private func shareViaEmailToButton(_ userAddress: UserContactLink) -> some View {
+        Button {
+            UserAddressView.shareUserAddressViaMailTo(userAddress)
+        } label: {
+            settingsRow("envelope") {
+                Text("Invite friends")
+            }
+        }
+    }
+
     private func autoAcceptToggle() -> some View {
         settingsRow("checkmark") {
             Toggle("Auto-accept", isOn: $aas.enable)
@@ -434,6 +448,36 @@ struct UserAddressView: View {
             }
         }
     }
+
+    static func shareUserAddressViaMailTo(_ userAddress: UserContactLink) {
+        guard
+            let subject = String(format: NSLocalizedString("Let's talk in SimpleX Chat", comment: "")).addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed),
+            let addressStr = userAddress.connReqContact.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed.subtracting(CharacterSet(charactersIn: "&"))),
+            let bodyWithoutAddress = (String(format: NSLocalizedString("Hi!\nConnect to me via SimpleX Chat:", comment: "")) + " ").addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)
+        else { return }
+
+        let body = bodyWithoutAddress + addressStr
+
+        let gmailUrl = URL(string: "googlegmail://co?subject=\(subject)&body=\(body)")
+        let outlookUrl = URL(string: "ms-outlook://compose?subject=\(subject)&body=\(body)")
+        let yahooUrl = URL(string: "ymail://mail/compose?subject=\(subject)&body=\(body)")
+        let sparkUrl = URL(string: "readdle-spark://compose?subject=\(subject)&body=\(body)")
+        var selectedUrl: URL
+
+        if let gmailUrl = gmailUrl, UIApplication.shared.canOpenURL(gmailUrl) {
+            selectedUrl = gmailUrl
+        } else if let outlookUrl = outlookUrl, UIApplication.shared.canOpenURL(outlookUrl) {
+            selectedUrl = outlookUrl
+        } else if let yahooUrl = yahooUrl, UIApplication.shared.canOpenURL(yahooUrl) {
+            selectedUrl = yahooUrl
+        } else if let sparkUrl = sparkUrl, UIApplication.shared.canOpenURL(sparkUrl) {
+            selectedUrl = sparkUrl
+        } else {
+            return
+        }
+
+        UIApplication.shared.open(selectedUrl, options: [:])
+    }
 }
 
 struct UserAddressView_Previews: PreviewProvider {

apps/ios/SimpleX--iOS--Info.plist

@@ -2,6 +2,13 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>LSApplicationQueriesSchemes</key>
+	<array>
+		<string>googlegmail</string>
+		<string>ms-outlook</string>
+		<string>readdle-spark</string>
+		<string>ymail</string>
+	</array>
 	<key>BGTaskSchedulerPermittedIdentifiers</key>
 	<array>
 		<string>chat.simplex.app.receive</string>