ios: connect plan (#3205)

* ios: connect plan * improvements * wording * fixes * rework to use dismissAllSheets with callback * rework * update texts * Update apps/ios/Shared/Views/NewChat/NewChatButton.swift * Update apps/ios/Shared/Views/NewChat/NewChatButton.swift --------- Co-authored-by: Evgeny Poberezkin <2769109+epoberezkin@users.noreply.github.com>
2026-07-28 12:09:41 +00:00 · 2023-10-13 19:19:00 +04:00
parent 07047a3ef3
commit c609303348
9 changed files with 437 additions and 112 deletions
@@ -31,11 +31,11 @@ struct ContentView: View {
    @State private var chatListActionSheet: ChatListActionSheet? = nil

    private enum ChatListActionSheet: Identifiable {
-        case connectViaUrl(action: ConnReqType, link: String)
+        case planAndConnectSheet(sheet: PlanAndConnectActionSheet)

        var id: String {
            switch self {
-            case let .connectViaUrl(_, link): return "connectViaUrl \(link)"
+            case let .planAndConnectSheet(sheet): return sheet.id
            }
        }
    }
@@ -93,7 +93,7 @@ struct ContentView: View {
                mainView()
                .actionSheet(item: $chatListActionSheet) { sheet in
                    switch sheet {
-                    case let .connectViaUrl(action, link): return connectViaUrlSheet(action, link)
+                    case let .planAndConnectSheet(sheet): return planAndConnectActionSheet(sheet, dismiss: false)
                    }
                }
            } else {
@@ -290,12 +290,19 @@ struct ContentView: View {
            if let url = m.appOpenUrl {
                m.appOpenUrl = nil
                var path = url.path
-                logger.debug("ContentView.connectViaUrl path: \(path)")
                if (path == "/contact" || path == "/invitation") {
                    path.removeFirst()
-                    let action: ConnReqType = path == "contact" ? .contact : .invitation
-                    let link = url.absoluteString.replacingOccurrences(of: "///\(path)", with: "/\(path)")
-                    chatListActionSheet = .connectViaUrl(action: action, link: link)
+                    // TODO normalize in backend; revert
+                    // let link = url.absoluteString.replacingOccurrences(of: "///\(path)", with: "/\(path)")
+                    var link = url.absoluteString.replacingOccurrences(of: "///\(path)", with: "/\(path)")
+                    link = link.starts(with: "simplex:/") ? link.replacingOccurrences(of: "simplex:/", with: "https://simplex.chat/") : link
+                    planAndConnect(
+                        link,
+                        showAlert: showPlanAndConnectAlert,
+                        showActionSheet: { chatListActionSheet = .planAndConnectSheet(sheet: $0) },
+                        dismiss: false,
+                        incognito: nil
+                    )
                } else {
                    AlertManager.shared.showAlert(Alert(title: Text("Error: URL is invalid")))
                }
@@ -303,20 +310,8 @@ struct ContentView: View {
        }
    }

-    private func connectViaUrlSheet(_ action: ConnReqType, _ link: String) -> ActionSheet {
-        let title: LocalizedStringKey
-        switch action {
-        case .contact: title = "Connect via contact link"
-        case .invitation: title = "Connect via one-time link"
-        }
-        return ActionSheet(
-            title: Text(title),
-            buttons: [
-                .default(Text("Use current profile")) { connectViaLink(link, incognito: false) },
-                .default(Text("Use new incognito profile")) { connectViaLink(link, incognito: true) },
-                .cancel()
-            ]
-        )
+    private func showPlanAndConnectAlert(_ alert: PlanAndConnectAlert) {
+        AlertManager.shared.showAlert(planAndConnectAlert(alert, dismiss: false))
    }
 }

@@ -152,6 +152,16 @@ final class ChatModel: ObservableObject {
        }
    }

+    func getGroupChat(_ groupId: Int64) -> Chat? {
+        chats.first { chat in
+            if case let .group(groupInfo) = chat.chatInfo {
+                return groupInfo.groupId == groupId
+            } else {
+                return false
+            }
+        }
+    }
+
    private func getChatIndex(_ id: String) -> Int? {
        chats.firstIndex(where: { $0.id == id })
    }
@@ -586,6 +586,15 @@ func apiSetConnectionIncognito(connId: Int64, incognito: Bool) async throws -> P
    throw r
 }

+func apiConnectPlan(connReq: String) async throws -> ConnectionPlan {
+    logger.error("apiConnectPlan connReq: \(connReq)")
+    let userId = try currentUserId("apiConnectPlan")
+    let r = await chatSendCmd(.apiConnectPlan(userId: userId, connReq: connReq))
+    if case let .connectionPlan(_, connectionPlan) = r { return connectionPlan }
+    logger.error("apiConnectPlan error: \(responseError(r))")
+    throw r
+}
+
 func apiConnect(incognito: Bool, connReq: String) async -> ConnReqType? {
    let (connReqType, alert) = await apiConnect_(incognito: incognito, connReq: connReq)
    if let alert = alert {
@@ -610,10 +619,7 @@ func apiConnect_(incognito: Bool, connReq: String) async -> (ConnReqType?, Alert
        if let c = m.getContactChat(contact.contactId) {
            await MainActor.run { m.chatId = c.id }
        }
-        let alert = mkAlert(
-            title: "Contact already exists",
-            message: "You are already connected to \(contact.displayName)."
-        )
+        let alert = contactAlreadyExistsAlert(contact)
        return (nil, alert)
    case .chatCmdError(_, .error(.invalidConnReq)):
        let alert = mkAlert(
@@ -641,6 +647,13 @@ func apiConnect_(incognito: Bool, connReq: String) async -> (ConnReqType?, Alert
    return (nil, alert)
 }

+func contactAlreadyExistsAlert(_ contact: Contact) -> Alert {
+    mkAlert(
+        title: "Contact already exists",
+        message: "You are already connected to \(contact.displayName)."
+    )
+}
+
 private func connectionErrorAlert(_ r: ChatResponse) -> Alert {
    if let networkErrorAlert = networkErrorAlert(r) {
        return networkErrorAlert
@@ -19,7 +19,7 @@ struct GroupMemberInfoView: View {
    @State private var connectionCode: String? = nil
    @State private var newRole: GroupMemberRole = .member
    @State private var alert: GroupMemberInfoViewAlert?
-    @State private var connectToMemberDialog: Bool = false
+    @State private var sheet: PlanAndConnectActionSheet?
    @AppStorage(DEFAULT_DEVELOPER_TOOLS) private var developerTools = false
    @State private var justOpened = true
    @State private var progressIndicator = false
@@ -30,9 +30,8 @@ struct GroupMemberInfoView: View {
        case switchAddressAlert
        case abortSwitchAddressAlert
        case syncConnectionForceAlert
-        case connRequestSentAlert(type: ConnReqType)
+        case planAndConnectAlert(alert: PlanAndConnectAlert)
        case error(title: LocalizedStringKey, error: LocalizedStringKey)
-        case other(alert: Alert)

        var id: String {
            switch self {
@@ -41,9 +40,8 @@ struct GroupMemberInfoView: View {
            case .switchAddressAlert: return "switchAddressAlert"
            case .abortSwitchAddressAlert: return "abortSwitchAddressAlert"
            case .syncConnectionForceAlert: return "syncConnectionForceAlert"
-            case .connRequestSentAlert: return "connRequestSentAlert"
+            case let .planAndConnectAlert(alert): return "planAndConnectAlert \(alert.id)"
            case let .error(title, _): return "error \(title)"
-            case let .other(alert): return "other \(alert)"
            }
        }
    }
@@ -206,11 +204,11 @@ struct GroupMemberInfoView: View {
                case .switchAddressAlert: return switchAddressAlert(switchMemberAddress)
                case .abortSwitchAddressAlert: return abortSwitchAddressAlert(abortSwitchMemberAddress)
                case .syncConnectionForceAlert: return syncConnectionForceAlert({ syncMemberConnection(force: true) })
-                case let .connRequestSentAlert(type): return connReqSentAlert(type)
+                case let .planAndConnectAlert(alert): return planAndConnectAlert(alert, dismiss: true)
                case let .error(title, error): return Alert(title: Text(title), message: Text(error))
-                case let .other(alert): return alert
                }
            }
+            .actionSheet(item: $sheet) { s in planAndConnectActionSheet(s, dismiss: true) }

            if progressIndicator {
                ProgressView().scaleEffect(2)
@@ -220,25 +218,16 @@ struct GroupMemberInfoView: View {

    func connectViaAddressButton(_ contactLink: String) -> some View {
        Button {
-            connectToMemberDialog = true
+            planAndConnect(
+                contactLink,
+                showAlert: { alert = .planAndConnectAlert(alert: $0) },
+                showActionSheet: { sheet = $0 },
+                dismiss: true,
+                incognito: nil
+            )
        } label: {
            Label("Connect", systemImage: "link")
        }
-        .confirmationDialog("Connect directly", isPresented: $connectToMemberDialog, titleVisibility: .visible) {
-            Button("Use current profile") { connectViaAddress(incognito: false, contactLink: contactLink) }
-            Button("Use new incognito profile") { connectViaAddress(incognito: true, contactLink: contactLink) }
-        }
-    }
-
-    func connectViaAddress(incognito: Bool, contactLink: String) {
-        Task {
-            let (connReqType, connectAlert) = await apiConnect_(incognito: incognito, connReq: contactLink)
-            if let connReqType = connReqType {
-                alert = .connRequestSentAlert(type: connReqType)
-            } else if let connectAlert = connectAlert {
-                alert = .other(alert: connectAlert)
-            }
-        }
    }

    func knownDirectChatButton(_ chat: Chat) -> some View {
@@ -58,65 +58,331 @@ struct NewChatButton: View {
    }
 }

-enum ConnReqType: Equatable {
-    case contact
-    case invitation
+enum PlanAndConnectAlert: Identifiable {
+    case ownInvitationLinkConfirmConnect(connectionLink: String, connectionPlan: ConnectionPlan, incognito: Bool)
+    case invitationLinkConnecting(connectionLink: String)
+    case ownContactAddressConfirmConnect(connectionLink: String, connectionPlan: ConnectionPlan, incognito: Bool)
+    case groupLinkConfirmConnect(connectionLink: String, connectionPlan: ConnectionPlan, incognito: Bool)
+    case groupLinkConnecting(connectionLink: String, groupInfo: GroupInfo?)
+
+    var id: String {
+        switch self {
+        case let .ownInvitationLinkConfirmConnect(connectionLink, _, _): return "ownInvitationLinkConfirmConnect \(connectionLink)"
+        case let .invitationLinkConnecting(connectionLink): return "invitationLinkConnecting \(connectionLink)"
+        case let .ownContactAddressConfirmConnect(connectionLink, _, _): return "ownContactAddressConfirmConnect \(connectionLink)"
+        case let .groupLinkConfirmConnect(connectionLink, _, _): return "groupLinkConfirmConnect \(connectionLink)"
+        case let .groupLinkConnecting(connectionLink, _): return "groupLinkConnecting \(connectionLink)"
+        }
+    }
 }

-func connectViaLink(_ connectionLink: String, dismiss: DismissAction? = nil, incognito: Bool) {
-    Task {
-        if let connReqType = await apiConnect(incognito: incognito, connReq: connectionLink) {
-            DispatchQueue.main.async {
-                dismiss?()
-                AlertManager.shared.showAlert(connReqSentAlert(connReqType))
-            }
+func planAndConnectAlert(_ alert: PlanAndConnectAlert, dismiss: Bool) -> Alert {
+    switch alert {
+    case let .ownInvitationLinkConfirmConnect(connectionLink, connectionPlan, incognito):
+        return Alert(
+            title: Text("Connect to yourself?"),
+            message: Text("This is your own one-time link!"),
+            primaryButton: .destructive(
+                Text(incognito ? "Connect incognito" : "Connect"),
+                action: { connectViaLink(connectionLink, connectionPlan: connectionPlan, dismiss: dismiss, incognito: incognito) }
+            ),
+            secondaryButton: .cancel()
+        )
+    case .invitationLinkConnecting:
+        return Alert(
+            title: Text("Already connecting!"),
+            message: Text("You are already connecting via this one-time link!")
+        )
+    case let .ownContactAddressConfirmConnect(connectionLink, connectionPlan, incognito):
+        return Alert(
+            title: Text("Connect to yourself?"),
+            message: Text("This is your own SimpleX address!"),
+            primaryButton: .destructive(
+                Text(incognito ? "Connect incognito" : "Connect"),
+                action: { connectViaLink(connectionLink, connectionPlan: connectionPlan, dismiss: dismiss, incognito: incognito) }
+            ),
+            secondaryButton: .cancel()
+        )
+    case let .groupLinkConfirmConnect(connectionLink, connectionPlan, incognito):
+        return Alert(
+            title: Text("Join group?"),
+            message: Text("You will connect to all group members."),
+            primaryButton: .default(
+                Text(incognito ? "Join incognito" : "Join"),
+                action: { connectViaLink(connectionLink, connectionPlan: connectionPlan, dismiss: dismiss, incognito: incognito) }
+            ),
+            secondaryButton: .cancel()
+        )
+    case let .groupLinkConnecting(_, groupInfo):
+        if let groupInfo = groupInfo {
+            return Alert(
+                title: Text("Group already exists!"),
+                message: Text("You are already joining the group \(groupInfo.displayName).")
+            )
        } else {
-            DispatchQueue.main.async {
-                dismiss?()
+            return Alert(
+                title: Text("Already joining the group!"),
+                message: Text("You are already joining the group via this link.")
+            )
+        }
+    }
+}
+
+enum PlanAndConnectActionSheet: Identifiable {
+    case askCurrentOrIncognitoProfile(connectionLink: String, connectionPlan: ConnectionPlan?, title: LocalizedStringKey)
+    case ownLinkAskCurrentOrIncognitoProfile(connectionLink: String, connectionPlan: ConnectionPlan, title: LocalizedStringKey)
+    case ownGroupLinkConfirmConnect(connectionLink: String, connectionPlan: ConnectionPlan, incognito: Bool?, groupInfo: GroupInfo)
+
+    var id: String {
+        switch self {
+        case let .askCurrentOrIncognitoProfile(connectionLink, _, _): return "askCurrentOrIncognitoProfile \(connectionLink)"
+        case let .ownLinkAskCurrentOrIncognitoProfile(connectionLink, _, _): return "ownLinkAskCurrentOrIncognitoProfile \(connectionLink)"
+        case let .ownGroupLinkConfirmConnect(connectionLink, _, _, _): return "ownGroupLinkConfirmConnect \(connectionLink)"
+        }
+    }
+}
+
+func planAndConnectActionSheet(_ sheet: PlanAndConnectActionSheet, dismiss: Bool) -> ActionSheet {
+    switch sheet {
+    case let .askCurrentOrIncognitoProfile(connectionLink, connectionPlan, title):
+        return ActionSheet(
+            title: Text(title),
+            buttons: [
+                .default(Text("Use current profile")) { connectViaLink(connectionLink, connectionPlan: connectionPlan, dismiss: dismiss, incognito: false) },
+                .default(Text("Use new incognito profile")) { connectViaLink(connectionLink, connectionPlan: connectionPlan, dismiss: dismiss, incognito: true) },
+                .cancel()
+            ]
+        )
+    case let .ownLinkAskCurrentOrIncognitoProfile(connectionLink, connectionPlan, title):
+        return ActionSheet(
+            title: Text(title),
+            buttons: [
+                .destructive(Text("Use current profile")) { connectViaLink(connectionLink, connectionPlan: connectionPlan, dismiss: dismiss, incognito: false) },
+                .destructive(Text("Use new incognito profile")) { connectViaLink(connectionLink, connectionPlan: connectionPlan, dismiss: dismiss, incognito: true) },
+                .cancel()
+            ]
+        )
+    case let .ownGroupLinkConfirmConnect(connectionLink, connectionPlan, incognito, groupInfo):
+        if let incognito = incognito {
+            return ActionSheet(
+                title: Text("Join your group?\nThis is your link for group \(groupInfo.displayName)!"),
+                buttons: [
+                    .default(Text("Open group")) { openKnownGroup(groupInfo, dismiss: dismiss, showAlreadyExistsAlert: nil) },
+                    .destructive(Text(incognito ? "Join incognito" : "Join with current profile")) { connectViaLink(connectionLink, connectionPlan: connectionPlan, dismiss: dismiss, incognito: incognito) },
+                    .cancel()
+                ]
+            )
+        } else {
+            return ActionSheet(
+                title: Text("Join your group?\nThis is your link for group \(groupInfo.displayName)!"),
+                buttons: [
+                    .default(Text("Open group")) { openKnownGroup(groupInfo, dismiss: dismiss, showAlreadyExistsAlert: nil) },
+                    .destructive(Text("Use current profile")) { connectViaLink(connectionLink, connectionPlan: connectionPlan, dismiss: dismiss, incognito: false) },
+                    .destructive(Text("Use new incognito profile")) { connectViaLink(connectionLink, connectionPlan: connectionPlan, dismiss: dismiss, incognito: true) },
+                    .cancel()
+                ]
+            )
+        }
+    }
+}
+
+func planAndConnect(
+    _ connectionLink: String,
+    showAlert: @escaping (PlanAndConnectAlert) -> Void,
+    showActionSheet: @escaping (PlanAndConnectActionSheet) -> Void,
+    dismiss: Bool,
+    incognito: Bool?
+) {
+    Task {
+        do {
+            let connectionPlan = try await apiConnectPlan(connReq: connectionLink)
+            switch connectionPlan {
+            case let .invitationLink(ilp):
+                switch ilp {
+                case .ok:
+                    logger.debug("planAndConnect, .invitationLink, .ok, incognito=\(incognito?.description ?? "nil")")
+                    if let incognito = incognito {
+                        connectViaLink(connectionLink, connectionPlan: connectionPlan, dismiss: dismiss, incognito: incognito)
+                    } else {
+                        showActionSheet(.askCurrentOrIncognitoProfile(connectionLink: connectionLink, connectionPlan: connectionPlan, title: "Connect via one-time link"))
+                    }
+                case .ownLink:
+                    logger.debug("planAndConnect, .invitationLink, .ownLink, incognito=\(incognito?.description ?? "nil")")
+                    if let incognito = incognito {
+                        showAlert(.ownInvitationLinkConfirmConnect(connectionLink: connectionLink, connectionPlan: connectionPlan, incognito: incognito))
+                    } else {
+                        showActionSheet(.ownLinkAskCurrentOrIncognitoProfile(connectionLink: connectionLink, connectionPlan: connectionPlan, title: "Connect to yourself?\nThis is your own one-time link!"))
+                    }
+                case let .connecting(contact_):
+                    logger.debug("planAndConnect, .invitationLink, .connecting, incognito=\(incognito?.description ?? "nil")")
+                    if let contact = contact_ {
+                        openKnownContact(contact, dismiss: dismiss) { AlertManager.shared.showAlert(contactAlreadyConnectingAlert(contact)) }
+                    } else {
+                        showAlert(.invitationLinkConnecting(connectionLink: connectionLink))
+                    }
+                case let .known(contact):
+                    logger.debug("planAndConnect, .invitationLink, .known, incognito=\(incognito?.description ?? "nil")")
+                    openKnownContact(contact, dismiss: dismiss) { AlertManager.shared.showAlert(contactAlreadyExistsAlert(contact)) }
+                }
+            case let .contactAddress(cap):
+                switch cap {
+                case .ok:
+                    logger.debug("planAndConnect, .contactAddress, .ok, incognito=\(incognito?.description ?? "nil")")
+                    if let incognito = incognito {
+                        connectViaLink(connectionLink, connectionPlan: connectionPlan, dismiss: dismiss, incognito: incognito)
+                    } else {
+                        showActionSheet(.askCurrentOrIncognitoProfile(connectionLink: connectionLink, connectionPlan: connectionPlan, title: "Connect via contact address"))
+                    }
+                case .ownLink:
+                    logger.debug("planAndConnect, .contactAddress, .ownLink, incognito=\(incognito?.description ?? "nil")")
+                    if let incognito = incognito {
+                        showAlert(.ownContactAddressConfirmConnect(connectionLink: connectionLink, connectionPlan: connectionPlan, incognito: incognito))
+                    } else {
+                        showActionSheet(.ownLinkAskCurrentOrIncognitoProfile(connectionLink: connectionLink, connectionPlan: connectionPlan, title: "Connect to yourself?\nThis is your own SimpleX address!"))
+                    }
+                case let .connecting(contact):
+                    logger.debug("planAndConnect, .contactAddress, .connecting, incognito=\(incognito?.description ?? "nil")")
+                    openKnownContact(contact, dismiss: dismiss) { AlertManager.shared.showAlert(contactAlreadyConnectingAlert(contact)) }
+                case let .known(contact):
+                    logger.debug("planAndConnect, .contactAddress, .known, incognito=\(incognito?.description ?? "nil")")
+                    openKnownContact(contact, dismiss: dismiss) { AlertManager.shared.showAlert(contactAlreadyExistsAlert(contact)) }
+                }
+            case let .groupLink(glp):
+                switch glp {
+                case .ok:
+                    if let incognito = incognito {
+                        showAlert(.groupLinkConfirmConnect(connectionLink: connectionLink, connectionPlan: connectionPlan, incognito: incognito))
+                    } else {
+                        showActionSheet(.askCurrentOrIncognitoProfile(connectionLink: connectionLink, connectionPlan: connectionPlan, title: "Join group"))
+                    }
+                case let .ownLink(groupInfo):
+                    logger.debug("planAndConnect, .groupLink, .ownLink, incognito=\(incognito?.description ?? "nil")")
+                    showActionSheet(.ownGroupLinkConfirmConnect(connectionLink: connectionLink, connectionPlan: connectionPlan, incognito: incognito, groupInfo: groupInfo))
+                case let .connecting(groupInfo_):
+                    logger.debug("planAndConnect, .groupLink, .connecting, incognito=\(incognito?.description ?? "nil")")
+                    showAlert(.groupLinkConnecting(connectionLink: connectionLink, groupInfo: groupInfo_))
+                case let .known(groupInfo):
+                    logger.debug("planAndConnect, .groupLink, .known, incognito=\(incognito?.description ?? "nil")")
+                    openKnownGroup(groupInfo, dismiss: dismiss) { AlertManager.shared.showAlert(groupAlreadyExistsAlert(groupInfo)) }
+                }
+            }
+        } catch {
+            logger.debug("planAndConnect, plan error")
+            if let incognito = incognito {
+                connectViaLink(connectionLink, connectionPlan: nil, dismiss: dismiss, incognito: incognito)
+            } else {
+                showActionSheet(.askCurrentOrIncognitoProfile(connectionLink: connectionLink, connectionPlan: nil, title: "Connect via link"))
            }
        }
    }
 }

-struct CReqClientData: Decodable {
-    var type: String
-    var groupLinkId: String?
-}
-
-func parseLinkQueryData(_ connectionLink: String) -> CReqClientData? {
-    if let hashIndex = connectionLink.firstIndex(of: "#"),
-       let urlQuery = URL(string: String(connectionLink[connectionLink.index(after: hashIndex)...])),
-       let components = URLComponents(url: urlQuery, resolvingAgainstBaseURL: false),
-       let data = components.queryItems?.first(where: { $0.name == "data" })?.value,
-       let d = data.data(using: .utf8),
-       let crData = try? getJSONDecoder().decode(CReqClientData.self, from: d) {
-        return crData
-    } else {
-        return nil
+private func connectViaLink(_ connectionLink: String, connectionPlan: ConnectionPlan?, dismiss: Bool, incognito: Bool) {
+    Task {
+        if let connReqType = await apiConnect(incognito: incognito, connReq: connectionLink) {
+            let crt: ConnReqType
+            if let plan = connectionPlan {
+                crt = planToConnReqType(plan)
+            } else {
+                crt = connReqType
+            }
+            DispatchQueue.main.async {
+                if dismiss {
+                    dismissAllSheets(animated: true) {
+                        AlertManager.shared.showAlert(connReqSentAlert(crt))
+                    }
+                } else {
+                    AlertManager.shared.showAlert(connReqSentAlert(crt))
+                }
+            }
+        } else {
+            if dismiss {
+                DispatchQueue.main.async {
+                    dismissAllSheets(animated: true)
+                }
+            }
+        }
    }
 }

-func checkCRDataGroup(_ crData: CReqClientData) -> Bool {
-    return crData.type == "group" && crData.groupLinkId != nil
+func openKnownContact(_ contact: Contact, dismiss: Bool, showAlreadyExistsAlert: (() -> Void)?) {
+    Task {
+        let m = ChatModel.shared
+        if let c = m.getContactChat(contact.contactId) {
+            DispatchQueue.main.async {
+                if dismiss {
+                    dismissAllSheets(animated: true) {
+                        m.chatId = c.id
+                        showAlreadyExistsAlert?()
+                    }
+                } else {
+                    m.chatId = c.id
+                    showAlreadyExistsAlert?()
+                }
+            }
+        }
+    }
 }

-func groupLinkAlert(_ connectionLink: String, incognito: Bool) -> Alert {
-    return Alert(
-        title: Text("Connect via group link?"),
-        message: Text("You will join a group this link refers to and connect to its group members."),
-        primaryButton: .default(Text(incognito ? "Connect incognito" : "Connect")) {
-            connectViaLink(connectionLink, incognito: incognito)
-        },
-        secondaryButton: .cancel()
+func openKnownGroup(_ groupInfo: GroupInfo, dismiss: Bool, showAlreadyExistsAlert: (() -> Void)?) {
+    Task {
+        let m = ChatModel.shared
+        if let g = m.getGroupChat(groupInfo.groupId) {
+            DispatchQueue.main.async {
+                if dismiss {
+                    dismissAllSheets(animated: true) {
+                        m.chatId = g.id
+                        showAlreadyExistsAlert?()
+                    }
+                } else {
+                    m.chatId = g.id
+                    showAlreadyExistsAlert?()
+                }
+            }
+        }
+    }
+}
+
+func contactAlreadyConnectingAlert(_ contact: Contact) -> Alert {
+    mkAlert(
+        title: "Contact already exists",
+        message: "You are already connecting to \(contact.displayName)."
    )
 }

+func groupAlreadyExistsAlert(_ groupInfo: GroupInfo) -> Alert {
+    mkAlert(
+        title: "Group already exists",
+        message: "You are already in group \(groupInfo.displayName)."
+    )
+}
+
+enum ConnReqType: Equatable {
+    case invitation
+    case contact
+    case groupLink
+
+    var connReqSentText: LocalizedStringKey {
+        switch self {
+        case .invitation: return "You will be connected when your contact's device is online, please wait or check later!"
+        case .contact: return "You will be connected when your connection request is accepted, please wait or check later!"
+        case .groupLink: return "You will be connected when group link host's device is online, please wait or check later!"
+        }
+    }
+}
+
+private func planToConnReqType(_ connectionPlan: ConnectionPlan) -> ConnReqType {
+    switch connectionPlan {
+    case .invitationLink: return .invitation
+    case .contactAddress: return .contact
+    case .groupLink: return .groupLink
+    }
+}
+
 func connReqSentAlert(_ type: ConnReqType) -> Alert {
    return mkAlert(
        title: "Connection request sent!",
-        message: type == .contact
-            ? "You will be connected when your connection request is accepted, please wait or check later!"
-            : "You will be connected when your contact's device is online, please wait or check later!"
+        message: type.connReqSentText
    )
 }

@@ -14,6 +14,8 @@ struct PasteToConnectView: View {
    @State private var connectionLink: String = ""
    @AppStorage(GROUP_DEFAULT_INCOGNITO, store: groupDefaults) private var incognitoDefault = false
    @FocusState private var linkEditorFocused: Bool
+    @State private var alert: PlanAndConnectAlert?
+    @State private var sheet: PlanAndConnectActionSheet?

    var body: some View {
        List {
@@ -57,6 +59,8 @@ struct PasteToConnectView: View {
                + Text("You can also connect by clicking the link. If it opens in the browser, click **Open in mobile app** button.")
            }
        }
+        .alert(item: $alert) { a in planAndConnectAlert(a, dismiss: true) }
+        .actionSheet(item: $sheet) { s in planAndConnectActionSheet(s, dismiss: true) }
    }

    private func linkEditor() -> some View {
@@ -83,13 +87,13 @@ struct PasteToConnectView: View {

    private func connect() {
        let link = connectionLink.trimmingCharacters(in: .whitespaces)
-        if let crData = parseLinkQueryData(link),
-           checkCRDataGroup(crData) {
-            dismiss()
-            AlertManager.shared.showAlert(groupLinkAlert(link, incognito: incognitoDefault))
-        } else {
-            connectViaLink(link, dismiss: dismiss, incognito: incognitoDefault)
-        }
+        planAndConnect(
+            link,
+            showAlert: { alert = $0 },
+            showActionSheet: { sheet = $0 },
+            dismiss: true,
+            incognito: incognitoDefault
+        )
    }
 }

@@ -13,6 +13,8 @@ import CodeScanner
 struct ScanToConnectView: View {
    @Environment(\.dismiss) var dismiss: DismissAction
    @AppStorage(GROUP_DEFAULT_INCOGNITO, store: groupDefaults) private var incognitoDefault = false
+    @State private var alert: PlanAndConnectAlert?
+    @State private var sheet: PlanAndConnectActionSheet?

    var body: some View {
        ScrollView {
@@ -49,18 +51,20 @@ struct ScanToConnectView: View {
            .frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .top)
        }
        .background(Color(.systemGroupedBackground))
+        .alert(item: $alert) { a in planAndConnectAlert(a, dismiss: true) }
+        .actionSheet(item: $sheet) { s in planAndConnectActionSheet(s, dismiss: true) }
    }

    func processQRCode(_ resp: Result<ScanResult, ScanError>) {
        switch resp {
        case let .success(r):
-            if let crData = parseLinkQueryData(r.string),
-               checkCRDataGroup(crData) {
-                dismiss()
-                AlertManager.shared.showAlert(groupLinkAlert(r.string, incognito: incognitoDefault))
-            } else {
-                Task { connectViaLink(r.string, dismiss: dismiss, incognito: incognitoDefault) }
-            }
+            planAndConnect(
+                r.string,
+                showAlert: { alert = $0 },
+                showActionSheet: { sheet = $0 },
+                dismiss: true,
+                incognito: incognitoDefault
+            )
        case let .failure(e):
            logger.error("ConnectContactView.processQRCode QR code error: \(e.localizedDescription)")
            dismiss()
@@ -176,6 +176,11 @@
 		649BCDA22805D6EF00C3A862 /* CIImageView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 649BCDA12805D6EF00C3A862 /* CIImageView.swift */; };
 		64AA1C6927EE10C800AC7277 /* ContextItemView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 64AA1C6827EE10C800AC7277 /* ContextItemView.swift */; };
 		64AA1C6C27F3537400AC7277 /* DeletedItemView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 64AA1C6B27F3537400AC7277 /* DeletedItemView.swift */; };
+		64AB9C832AD6B6B900B21C4C /* libgmp.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 64AB9C7E2AD6B6B900B21C4C /* libgmp.a */; };
+		64AB9C842AD6B6B900B21C4C /* libHSsimplex-chat-5.4.0.1-7lTZkX9ojv2DbehL2eOY1b-ghc8.10.7.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 64AB9C7F2AD6B6B900B21C4C /* libHSsimplex-chat-5.4.0.1-7lTZkX9ojv2DbehL2eOY1b-ghc8.10.7.a */; };
+		64AB9C852AD6B6B900B21C4C /* libHSsimplex-chat-5.4.0.1-7lTZkX9ojv2DbehL2eOY1b.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 64AB9C802AD6B6B900B21C4C /* libHSsimplex-chat-5.4.0.1-7lTZkX9ojv2DbehL2eOY1b.a */; };
+		64AB9C862AD6B6B900B21C4C /* libffi.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 64AB9C812AD6B6B900B21C4C /* libffi.a */; };
+		64AB9C872AD6B6B900B21C4C /* libgmpxx.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 64AB9C822AD6B6B900B21C4C /* libgmpxx.a */; };
 		64C06EB52A0A4A7C00792D4D /* ChatItemInfoView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 64C06EB42A0A4A7C00792D4D /* ChatItemInfoView.swift */; };
 		64C3B0212A0D359700E19930 /* CustomTimePicker.swift in Sources */ = {isa = PBXBuildFile; fileRef = 64C3B0202A0D359700E19930 /* CustomTimePicker.swift */; };
 		64D0C2C029F9688300B38D5F /* UserAddressView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 64D0C2BF29F9688300B38D5F /* UserAddressView.swift */; };
@@ -458,6 +463,11 @@
 		649BCDA12805D6EF00C3A862 /* CIImageView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CIImageView.swift; sourceTree = "<group>"; };
 		64AA1C6827EE10C800AC7277 /* ContextItemView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ContextItemView.swift; sourceTree = "<group>"; };
 		64AA1C6B27F3537400AC7277 /* DeletedItemView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DeletedItemView.swift; sourceTree = "<group>"; };
+		64AB9C7E2AD6B6B900B21C4C /* libgmp.a */ = {isa = PBXFileReference; lastKnownFileType = archive.ar; path = libgmp.a; sourceTree = "<group>"; };
+		64AB9C7F2AD6B6B900B21C4C /* libHSsimplex-chat-5.4.0.1-7lTZkX9ojv2DbehL2eOY1b-ghc8.10.7.a */ = {isa = PBXFileReference; lastKnownFileType = archive.ar; path = "libHSsimplex-chat-5.4.0.1-7lTZkX9ojv2DbehL2eOY1b-ghc8.10.7.a"; sourceTree = "<group>"; };
+		64AB9C802AD6B6B900B21C4C /* libHSsimplex-chat-5.4.0.1-7lTZkX9ojv2DbehL2eOY1b.a */ = {isa = PBXFileReference; lastKnownFileType = archive.ar; path = "libHSsimplex-chat-5.4.0.1-7lTZkX9ojv2DbehL2eOY1b.a"; sourceTree = "<group>"; };
+		64AB9C812AD6B6B900B21C4C /* libffi.a */ = {isa = PBXFileReference; lastKnownFileType = archive.ar; path = libffi.a; sourceTree = "<group>"; };
+		64AB9C822AD6B6B900B21C4C /* libgmpxx.a */ = {isa = PBXFileReference; lastKnownFileType = archive.ar; path = libgmpxx.a; sourceTree = "<group>"; };
 		64C06EB42A0A4A7C00792D4D /* ChatItemInfoView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ChatItemInfoView.swift; sourceTree = "<group>"; };
 		64C3B0202A0D359700E19930 /* CustomTimePicker.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CustomTimePicker.swift; sourceTree = "<group>"; };
 		64D0C2BF29F9688300B38D5F /* UserAddressView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = UserAddressView.swift; sourceTree = "<group>"; };
@@ -507,13 +517,13 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				5CA8D0162AD746C8001FD661 /* libgmpxx.a in Frameworks */,
-				5CA8D01A2AD746C8001FD661 /* libgmp.a in Frameworks */,
-				5CA8D0182AD746C8001FD661 /* libHSsimplex-chat-5.4.0.1-7lTZkX9ojv2DbehL2eOY1b.a in Frameworks */,
-				5CA8D0192AD746C8001FD661 /* libHSsimplex-chat-5.4.0.1-7lTZkX9ojv2DbehL2eOY1b-ghc8.10.7.a in Frameworks */,
+				64AB9C842AD6B6B900B21C4C /* libHSsimplex-chat-5.4.0.1-7lTZkX9ojv2DbehL2eOY1b-ghc8.10.7.a in Frameworks */,
+				64AB9C862AD6B6B900B21C4C /* libffi.a in Frameworks */,
+				64AB9C852AD6B6B900B21C4C /* libHSsimplex-chat-5.4.0.1-7lTZkX9ojv2DbehL2eOY1b.a in Frameworks */,
 				5CE2BA93284534B000EC33A6 /* libiconv.tbd in Frameworks */,
+				64AB9C832AD6B6B900B21C4C /* libgmp.a in Frameworks */,
 				5CE2BA94284534BB00EC33A6 /* libz.tbd in Frameworks */,
-				5CA8D0172AD746C8001FD661 /* libffi.a in Frameworks */,
+				64AB9C872AD6B6B900B21C4C /* libgmpxx.a in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -574,11 +584,11 @@
 		5C764E5C279C70B7000C6508 /* Libraries */ = {
 			isa = PBXGroup;
 			children = (
-				5CA8D0122AD746C8001FD661 /* libffi.a */,
-				5CA8D0152AD746C8001FD661 /* libgmp.a */,
-				5CA8D0112AD746C8001FD661 /* libgmpxx.a */,
-				5CA8D0142AD746C8001FD661 /* libHSsimplex-chat-5.4.0.1-7lTZkX9ojv2DbehL2eOY1b-ghc8.10.7.a */,
-				5CA8D0132AD746C8001FD661 /* libHSsimplex-chat-5.4.0.1-7lTZkX9ojv2DbehL2eOY1b.a */,
+				64AB9C812AD6B6B900B21C4C /* libffi.a */,
+				64AB9C7E2AD6B6B900B21C4C /* libgmp.a */,
+				64AB9C822AD6B6B900B21C4C /* libgmpxx.a */,
+				64AB9C7F2AD6B6B900B21C4C /* libHSsimplex-chat-5.4.0.1-7lTZkX9ojv2DbehL2eOY1b-ghc8.10.7.a */,
+				64AB9C802AD6B6B900B21C4C /* libHSsimplex-chat-5.4.0.1-7lTZkX9ojv2DbehL2eOY1b.a */,
 			);
 			path = Libraries;
 			sourceTree = "<group>";
@@ -86,6 +86,7 @@ public enum ChatCommand {
    case apiVerifyGroupMember(groupId: Int64, groupMemberId: Int64, connectionCode: String?)
    case apiAddContact(userId: Int64, incognito: Bool)
    case apiSetConnectionIncognito(connId: Int64, incognito: Bool)
+    case apiConnectPlan(userId: Int64, connReq: String)
    case apiConnect(userId: Int64, incognito: Bool, connReq: String)
    case apiDeleteChat(type: ChatType, id: Int64)
    case apiClearChat(type: ChatType, id: Int64)
@@ -219,6 +220,7 @@ public enum ChatCommand {
            case let .apiVerifyGroupMember(groupId, groupMemberId, .none): return "/_verify code #\(groupId) \(groupMemberId)"
            case let .apiAddContact(userId, incognito): return "/_connect \(userId) incognito=\(onOff(incognito))"
            case let .apiSetConnectionIncognito(connId, incognito): return "/_set incognito :\(connId) \(onOff(incognito))"
+            case let .apiConnectPlan(userId, connReq): return "/_connect plan \(userId) \(connReq)"
            case let .apiConnect(userId, incognito, connReq): return "/_connect \(userId) incognito=\(onOff(incognito)) \(connReq)"
            case let .apiDeleteChat(type, id): return "/_delete \(ref(type, id))"
            case let .apiClearChat(type, id): return "/_clear chat \(ref(type, id))"
@@ -335,6 +337,7 @@ public enum ChatCommand {
            case .apiVerifyGroupMember: return "apiVerifyGroupMember"
            case .apiAddContact: return "apiAddContact"
            case .apiSetConnectionIncognito: return "apiSetConnectionIncognito"
+            case .apiConnectPlan: return "apiConnectPlan"
            case .apiConnect: return "apiConnect"
            case .apiDeleteChat: return "apiDeleteChat"
            case .apiClearChat: return "apiClearChat"
@@ -460,6 +463,7 @@ public enum ChatResponse: Decodable, Error {
    case connectionVerified(user: UserRef, verified: Bool, expectedCode: String)
    case invitation(user: UserRef, connReqInvitation: String, connection: PendingContactConnection)
    case connectionIncognitoUpdated(user: UserRef, toConnection: PendingContactConnection)
+    case connectionPlan(user: UserRef, connectionPlan: ConnectionPlan)
    case sentConfirmation(user: UserRef)
    case sentInvitation(user: UserRef)
    case contactAlreadyExists(user: UserRef, contact: Contact)
@@ -601,6 +605,7 @@ public enum ChatResponse: Decodable, Error {
            case .connectionVerified: return "connectionVerified"
            case .invitation: return "invitation"
            case .connectionIncognitoUpdated: return "connectionIncognitoUpdated"
+            case .connectionPlan: return "connectionPlan"
            case .sentConfirmation: return "sentConfirmation"
            case .sentInvitation: return "sentInvitation"
            case .contactAlreadyExists: return "contactAlreadyExists"
@@ -739,6 +744,7 @@ public enum ChatResponse: Decodable, Error {
            case let .connectionVerified(u, verified, expectedCode): return withUser(u, "verified: \(verified)\nconnectionCode: \(expectedCode)")
            case let .invitation(u, connReqInvitation, _): return withUser(u, connReqInvitation)
            case let .connectionIncognitoUpdated(u, toConnection): return withUser(u, String(describing: toConnection))
+            case let .connectionPlan(u, connectionPlan): return withUser(u, String(describing: connectionPlan))
            case .sentConfirmation: return noDetails
            case .sentInvitation: return noDetails
            case let .contactAlreadyExists(u, contact): return withUser(u, String(describing: contact))
@@ -859,6 +865,33 @@ public func chatError(_ chatResponse: ChatResponse) -> ChatErrorType? {
    }
 }

+public enum ConnectionPlan: Decodable {
+    case invitationLink(invitationLinkPlan: InvitationLinkPlan)
+    case contactAddress(contactAddressPlan: ContactAddressPlan)
+    case groupLink(groupLinkPlan: GroupLinkPlan)
+}
+
+public enum InvitationLinkPlan: Decodable {
+    case ok
+    case ownLink
+    case connecting(contact_: Contact?)
+    case known(contact: Contact)
+}
+
+public enum ContactAddressPlan: Decodable {
+    case ok
+    case ownLink
+    case connecting(contact: Contact)
+    case known(contact: Contact)
+}
+
+public enum GroupLinkPlan: Decodable {
+    case ok
+    case ownLink(groupInfo: GroupInfo)
+    case connecting(groupInfo_: GroupInfo?)
+    case known(groupInfo: GroupInfo)
+}
+
 struct NewUser: Encodable {
    var profile: Profile?
    var sameServers: Bool
@@ -1477,6 +1510,7 @@ public enum ChatErrorType: Decodable {
    case chatNotStarted
    case chatNotStopped
    case chatStoreChanged
+    case connectionPlan(connectionPlan: ConnectionPlan)
    case invalidConnReq
    case invalidChatMessage(connection: Connection, message: String)
    case contactNotReady(contact: Contact)