feat(routing): open the profile until a DM exists

Flipcash/Core/Navigation/AppRouter+Destination.swift

@@ -111,14 +111,6 @@ extension AppRouter {
         /// trace shows "post-tip, keyboard up" distinctly, and so the ordinary
         /// tip-list / push-notification opens stay keyboard-closed untouched.
         case tipConversationWithKeyboard(ConversationID)
-        /// A tip DM named by its counterpart rather than its chat id — the
-        /// username lookup's destination. The chat is created by the first tip,
-        /// so before then there is no id to push; the screen derives one.
-        case tipConversationForUser(UserID)
-        /// Same chat as `tipConversationForUser`, opened with Send Cash already started — the
-        /// profile's Send Cash button. A sibling case for the same reason as
-        /// `tipConversationWithKeyboard`: the trace shows the send-first open distinctly.
-        case tipConversationForUserSendingCash(UserID)
         /// A person's Flipcash profile, pushed from a tip DM's title/card or a group member's face;
         /// hosts the Block action. `origin` decides whether it offers a way into the DM.
         case userProfile(UserID, origin: UserProfileOrigin)
@@ -156,8 +148,7 @@ extension AppRouter {
                  .settingsApplicationLogs, .blockedUsers, .accessKey, .withdraw:
                 return .you
             case .profileName, .profilePhoto, .tipcard, .usernameLookup, .newChat, .newPublicGroup,
-                 .tipConversation, .tipConversationWithKeyboard, .tipConversationForUser,
-                 .tipConversationForUserSendingCash, .userProfile, .chatProfile,
+                 .tipConversation, .tipConversationWithKeyboard, .userProfile, .chatProfile,
                  .editGroup, .editGroupName, .editGroupPicture, .archivedChats:
                 return .tips
             }
@@ -209,8 +200,6 @@ extension AppRouter {
             case .newPublicGroup:               "newPublicGroup"
             case .tipConversation:              "tipConversation"
             case .tipConversationWithKeyboard:  "tipConversationWithKeyboard"
-            case .tipConversationForUser:       "tipConversationForUser"
-            case .tipConversationForUserSendingCash: "tipConversationForUserSendingCash"
             case .userProfile:                  "userProfile"
             case .chatProfile:                  "chatProfile"
             case .editGroup:                    "editGroup"
@@ -244,9 +233,7 @@ extension AppRouter {
                  .editGroupName(let conversationID),
                  .editGroupPicture(let conversationID):
                 return conversationID.description
-            case .userProfile(let userID, _),
-                 .tipConversationForUser(let userID),
-                 .tipConversationForUserSendingCash(let userID):
+            case .userProfile(let userID, _):
                 return userID.uuidString
             case .username(let username):
                 return username?.value

Flipcash/Core/Navigation/AppRouter+DestinationView.swift

@@ -210,17 +210,6 @@ struct DestinationView: View {
             ConversationScreen(context: .existing(conversationID), openKeyboard: true)
                 .id(conversationID)
 
-        case .tipConversationForUser(let userID):
-            // Opened before the chat exists, so the screen is given the person
-            // and derives the chat id itself. `.id` forces fresh view identity.
-            ConversationScreen(context: .tipDM(counterpart: userID))
-                .id(userID)
-
-        case .tipConversationForUserSendingCash(let userID):
-            // The profile's Send Cash: the same chat, with the send started on open.
-            ConversationScreen(context: .tipDM(counterpart: userID), startSendCash: true)
-                .id(userID)
-
         case .userProfile(let userID, let origin):
             UserProfileScreen(userID: userID, origin: origin)
                 .id(userID)

Flipcash/Core/Navigation/DMRoute.swift

@@ -0,0 +1,22 @@
+//
+//  DMRoute.swift
+//  Flipcash
+//
+
+import FlipcashCore
+
+/// Where opening a person lands: their DM once it exists, their profile until then.
+nonisolated enum DMRoute {
+
+    /// The destination for opening `userID`, given the DM with them if there is one.
+    static func destination(
+        for userID: UserID,
+        dmID: ConversationID?,
+        origin: UserProfileOrigin
+    ) -> AppRouter.Destination {
+        if let dmID {
+            return .tipConversation(dmID)
+        }
+        return .userProfile(userID, origin: origin)
+    }
+}

Flipcash/Core/Screens/Conversation/ChatScreenRepresentable.swift

@@ -80,7 +80,6 @@ struct ChatScreenRepresentable: UIViewControllerRepresentable {
     /// Fired when the long-press strip's "+" is tapped, with the row's stable id.
     let onReactionStripAdd: (String) -> Void
     let showsSendCash: Bool
-    let chatExists: Bool
     let conversationID: ConversationID?
     let symbol: String
     let onSendCash: () -> Void
@@ -95,10 +94,6 @@ struct ChatScreenRepresentable: UIViewControllerRepresentable {
     /// the composer field in `viewDidAppear` — a hosted SwiftUI `@FocusState` never presents the
     /// keyboard across the hosting boundary.
     let focusOnAppear: Bool
-    /// Whether this is a tip DM, whose Send Cash reads Start Chatting until the chat exists.
-    let isTipDm: Bool
-    /// The floor the first tip has to clear to open this chat, named on the CTA.
-    let startChattingFee: FiatAmount?
     /// Whether the chat's participation rules leave this user anything to type, and whether they
     /// may read at all. Drives the gate panel in place of the bar and the blur over the transcript.
     let gate: ConversationGatePresentation
@@ -150,7 +145,7 @@ struct ChatScreenRepresentable: UIViewControllerRepresentable {
         screen.focusesComposerOnAppear = focusOnAppear
         screen.isTranscriptObscured = gate.obscuresTranscript
         screen.showsGatePlaceholder = showsGatePlaceholder
-        screen.barRestingDrop = chatExists ? BarMetrics.compactDrop : 0
+        screen.barRestingDrop = BarMetrics.compactDrop
         screen.authorAvatars = authorAvatars
         screen.onReachTop = onReachTop
         screen.onRetry = onRetry
@@ -206,7 +201,7 @@ struct ChatScreenRepresentable: UIViewControllerRepresentable {
         context.coordinator.barHost?.rootView = bar(coordinator: context.coordinator)
         screen.isTranscriptObscured = gate.obscuresTranscript
         screen.showsGatePlaceholder = showsGatePlaceholder
-        screen.barRestingDrop = chatExists ? BarMetrics.compactDrop : 0
+        screen.barRestingDrop = BarMetrics.compactDrop
         screen.authorAvatars = authorAvatars
         screen.onReachTop = onReachTop
         screen.onRetry = onRetry
@@ -313,14 +308,11 @@ struct ChatScreenRepresentable: UIViewControllerRepresentable {
         return AnyView(
             ConversationBottomBar(
                 showsSendCash: showsSendCash,
-                chatExists: chatExists,
                 conversationID: conversationID,
                 symbol: symbol,
                 onSendCash: onSendCash,
                 model: barModel,
                 composer: composer,
-                isTipDm: isTipDm,
-                startChattingFee: startChattingFee,
                 gate: gate,
                 gateMintName: gateMintName,
                 onGateAddFunds: onGateAddFunds,