ios: rework UX of creating new connection (#3482)

* ios: connection UI (wip)

* custom search

* rework invite

* connect paste link ui

* scan rework, process errors, other fixes

* scan layout

* clear link on cancel

* improved search

* further improve search

* animation

* connect on paste in search

* layout

* layout

* layout

* layout, add conn

* delete unused invitation, create used invitation chat

* remove old views

* regular paste button

* new chat menu

* previews

* increase spacing

* animation, fix alerts

* swipe

* change text

* less sensitive gesture

* layout

* search cancel button transition

* slow down chat list animation (uses deprecated modifiers)

* icons

* update code scanner, layout

* manage camera permissions

* ask to delete unused invitation

* comment

* remove onDismiss

* don't filter chats on link in search, allow to paste text with link

* cleanup link after connection

* filter chat by link

* revert change

* show link descr

* disabled search

* underline

* filter own group

* simplify

* no animation

* add delay, move createInvitation

* update library

* possible fix for ios 15

* add explicit frame to qr code

* update library

* Revert "add explicit frame to qr code"

This reverts commit 95c7d31e47.

* remove comment

* fix pasteboardHasURLs, disable paste button based on it

* align help texts with changed button names

Co-authored-by: Stanislav Dmitrenko <7953703+avently@users.noreply.github.com>

* update library

* Revert "fix pasteboardHasURLs, disable paste button based on it"

This reverts commit 46f63572e9.

* remove unused var

* restore disabled

* export localizations

---------

Co-authored-by: Evgeny Poberezkin <2769109+epoberezkin@users.noreply.github.com>
Co-authored-by: Stanislav Dmitrenko <7953703+avently@users.noreply.github.com>

apps/ios/Shared/Model/ChatModel.swift

@@ -89,14 +89,15 @@ final class ChatModel: ObservableObject {
     @Published var showCallView = false
     // remote desktop
     @Published var remoteCtrlSession: RemoteCtrlSession?
-    // currently showing QR code
-    @Published var connReqInv: String?
+    // currently showing invitation
+    @Published var showingInvitation: ShowingInvitation?
     // audio recording and playback
     @Published var stopPreviousRecPlay: URL? = nil // coordinates currently playing source
     @Published var draft: ComposeState?
     @Published var draftChatId: String?
     // tracks keyboard height via subscription in AppDelegate
     @Published var keyboardHeight: CGFloat = 0
+    @Published var pasteboardHasStrings: Bool = UIPasteboard.general.hasStrings
 
     var messageDelivery: Dictionary<Int64, () -> Void> = [:]
 
@@ -620,14 +621,16 @@ final class ChatModel: ObservableObject {
     }
 
     func dismissConnReqView(_ id: String) {
-        if let connReqInv = connReqInv,
-           let c = getChat(id),
-           case let .contactConnection(contactConnection) = c.chatInfo,
-           connReqInv == contactConnection.connReqInv {
+        if id == showingInvitation?.connId {
+            markShowingInvitationUsed()
             dismissAllSheets()
         }
     }
 
+    func markShowingInvitationUsed() {
+        showingInvitation?.connChatUsed = true
+    }
+
     func removeChat(_ id: String) {
         withAnimation {
             chats.removeAll(where: { $0.id == id })
@@ -704,6 +707,11 @@ final class ChatModel: ObservableObject {
     }
 }
 
+struct ShowingInvitation {
+    var connId: String
+    var connChatUsed: Bool
+}
+
 struct NTFContactRequest {
     var incognito: Bool
     var chatId: String

apps/ios/Shared/Model/SimpleXAPI.swift

@@ -581,15 +581,15 @@ func apiVerifyGroupMember(_ groupId: Int64, _ groupMemberId: Int64, connectionCo
     return nil
 }
 
-func apiAddContact(incognito: Bool) async -> (String, PendingContactConnection)? {
+func apiAddContact(incognito: Bool) async -> ((String, PendingContactConnection)?, Alert?) {
     guard let userId = ChatModel.shared.currentUser?.userId else {
         logger.error("apiAddContact: no current user")
-        return nil
+        return (nil, nil)
     }
     let r = await chatSendCmd(.apiAddContact(userId: userId, incognito: incognito), bgTask: false)
-    if case let .invitation(_, connReqInvitation, connection) = r { return (connReqInvitation, connection) }
-    AlertManager.shared.showAlert(connectionErrorAlert(r))
-    return nil
+    if case let .invitation(_, connReqInvitation, connection) = r { return ((connReqInvitation, connection), nil) }
+    let alert = connectionErrorAlert(r)
+    return (nil, alert)
 }
 
 func apiSetConnectionIncognito(connId: Int64, incognito: Bool) async throws -> PendingContactConnection? {