feat(groups): private groups

apps/flipcash/app/src/main/kotlin/com/flipcash/app/internal/ui/navigation/AppScreenContent.kt

@@ -26,6 +26,7 @@ import com.flipcash.app.contact.verification.VerificationFlowScreen
 import com.flipcash.app.currencycreator.CurrencyCreatorFlowScreen
 import com.flipcash.app.tipping.FindByUsernameScreen
 import com.flipcash.app.tipping.ArchivedChatsScreen
+import com.flipcash.app.tipping.RequestsScreen
 import com.flipcash.app.tipping.NewChatScreen
 import com.flipcash.app.tipping.NewGroupFlowScreen
 import com.flipcash.app.tipping.ChatsScreen
@@ -138,6 +139,7 @@ fun appEntryProvider(
     annotatedEntry<AppRoute.Messaging.Profile> { key -> ProfileScreen(key.address, key.origin) }
     annotatedEntry<AppRoute.Messaging.NewChat> { NewChatScreen() }
     annotatedEntry<AppRoute.Messaging.ArchivedChats> { ArchivedChatsScreen() }
+    annotatedEntry<AppRoute.Messaging.Requests> { RequestsScreen() }
     annotatedEntry<AppRoute.Messaging.FindByUsername> { FindByUsernameScreen() }
     annotatedEntry<AppRoute.Messaging.NewGroup> { key ->
         NewGroupFlowScreen(route = key, resultStateRegistry = resultStateRegistry)
@@ -151,6 +153,9 @@ fun appEntryProvider(
     annotatedEntry<AppRoute.Messaging.PhotoViewer> { key -> ChatPhotoViewerScreen(key.chatId, key.messageId) }
     annotatedEntry<AppRoute.Messaging.E2eeDmInfo> { E2eeLearnMoreScreen(forGroup = false) }
     annotatedEntry<AppRoute.Messaging.E2eeGroupInfo> { E2eeLearnMoreScreen(forGroup = true) }
+    annotatedEntry<AppRoute.Messaging.E2eePrivateGroupInfo> {
+        E2eeLearnMoreScreen(forGroup = true, isPrivate = true)
+    }
 
     // Tokens
     annotatedEntry<AppRoute.Token.Info>(testTag = "token_info_screen") { key ->

apps/flipcash/core/src/main/kotlin/com/flipcash/app/core/AppRoute.kt

@@ -363,9 +363,16 @@ sealed interface AppRoute : NavKey, Parcelable {
             // profile is the flow's root, so back returns to wherever the tap came from, and Open
             // Chat pushes the transcript on top of it.
             val openOnProfile: Boolean = false,
+            // Open on a private group's Join Requests as the flow's root, so back returns to the
+            // Requests screen that set it, the way iOS does.
+            val openOnJoinRequests: Boolean = false,
         ) : Messaging, FlowRoute {
             override val initialStack: List<NavKey>
-                get() = listOf(if (openOnProfile) ChatStep.GroupProfile else ChatStep.Conversation)
+                get() = when {
+                    openOnJoinRequests -> listOf(ChatStep.JoinRequests)
+                    openOnProfile -> listOf(ChatStep.GroupProfile)
+                    else -> listOf(ChatStep.Conversation)
+                }
         }
 
         /**
@@ -389,6 +396,14 @@ sealed interface AppRoute : NavKey, Parcelable {
         @Parcelize
         data object ArchivedChats : Messaging
 
+        /**
+         * Join requests in both directions, behind the Requests button on the Chats header. Pushed
+         * for the reason [ArchivedChats] is.
+         */
+        @Serializable
+        @Parcelize
+        data object Requests : Messaging
+
         /**
          * Another person's profile, opened on its own rather than from inside a chat — the
          * destination of a `flipcash.com/{username}` or `flipcash.com/{uuid}` link.
@@ -412,14 +427,18 @@ sealed interface AppRoute : NavKey, Parcelable {
         data object FindByUsername : Messaging
 
         /**
-         * Node 10153:22901 — creating a public group, from the empty form to its invite link.
+         * Node 10153:22901 — creating a public group, from the empty form to its invite link; node
+         * 11203:65 is the same flow for a private one.
          *
          * The three screens share one draft, so they are steps of a flow rather than routes; see
          * [NewGroupStep].
          */
         @Serializable
         @Parcelize
-        data object NewGroup : Messaging, FlowRoute {
+        data class NewGroup(
+            /** Node 11203:65: approval to join, end-to-end encrypted, no balance requirement. */
+            val isPrivate: Boolean = false,
+        ) : Messaging, FlowRoute {
             override val initialStack: List<NavKey>
                 get() = listOf(NewGroupStep.Form)
         }
@@ -526,6 +545,14 @@ sealed interface AppRoute : NavKey, Parcelable {
             Messaging,
             com.getcode.navigation.Sheet,
             com.getcode.navigation.WrapContentSheet
+
+        /** [E2eeGroupInfo] for a private group, which is end-to-end encrypted (node 11210:71). */
+        @Serializable
+        @Parcelize
+        data object E2eePrivateGroupInfo :
+            Messaging,
+            com.getcode.navigation.Sheet,
+            com.getcode.navigation.WrapContentSheet
     }
 
     @Serializable

apps/flipcash/core/src/main/kotlin/com/flipcash/app/core/chat/ChatStep.kt

@@ -101,6 +101,23 @@ sealed interface ChatStep : FlowStep, Parcelable {
     @Serializable
     data object EditGroup : ChatStep
 
+    /**
+     * Node 11206:60 — who is waiting to join a private group, for its creator to approve or deny.
+     * Carries nothing for the same reason [GroupProfile] does not; the lobby itself comes from the
+     * shared host-lobby store.
+     */
+    @Parcelize
+    @Serializable
+    data object JoinRequests : ChatStep
+
+    /**
+     * Node 11210:70 — every member of a private group, the creator pinned first with a Host tag.
+     * The roster comes from the shared roster store.
+     */
+    @Parcelize
+    @Serializable
+    data object Members : ChatStep
+
     /** The group's title, on the same entry screen shape the profile name uses. */
     @Parcelize
     @Serializable

apps/flipcash/core/src/main/res/values/strings.xml

@@ -932,6 +932,8 @@
     <string name="action_addToChat">Add %1$s to Chat</string>
     <string name="action_leaveChat">Leave Chat</string>
     <string name="prompt_title_leaveChat">Leave %1$s?</string>
+    <!-- A private group: coming back means a new request, not an invite link (node 11206:98). -->
+    <string name="prompt_description_leavePrivateChat">You’ll lose access to the conversation. To rejoin, you’ll need to request again and wait for the host to approve</string>
     <string name="prompt_description_leaveChat">You won’t receive messages from this group any more. You can join again with an invite link</string>
     <string name="error_title_failedToLeave">Something Went Wrong</string>
     <string name="error_description_failedToLeave">We were unable to leave this group. Please try again</string>
@@ -1020,6 +1022,10 @@
     <string name="item_e2eeSheet_beforeEncryption">Messages sent before encryption became available</string>
     <string name="item_e2eeSheet_messagesAndMediaInDms">Messages and media in 1:1 chats</string>
     <string name="item_e2eeSheet_publicGroupChatsIncludingThis">Public group chats, including this one</string>
+    <!-- A private group (node 11210:71). -->
+    <string name="subtitle_e2eeSheet_privateGroup">Messages and media in this group are end-to-end encrypted. Only its members can read them, and the host approves everyone who joins.</string>
+    <string name="item_e2eeSheet_groupDetails">The group’s name, photo, description and cover</string>
+    <string name="item_e2eeSheet_groupMembers">Who is in the group, and how many</string>
 
     <!-- Cash link card: the state of the link a message carries, read without claiming it -->
     <string name="label_linkCard_cash">Cash</string>
@@ -1104,6 +1110,80 @@
          (node 10127:117987). -->
     <string name="title_startNewChat">New Chat</string>
     <string name="action_createPublicGroup">Create a Public Group</string>
+    <string name="action_createPrivateGroup">Create a Private Group</string>
+    <string name="title_newPrivateGroup">New Private Group</string>
+    <string name="action_requestToJoin">Request to Join</string>
+    <string name="action_requestSent">Request Sent</string>
+    <string name="action_cancelRequest">Cancel Request</string>
+    <string name="subtitle_privateGroupMembers">Private group · %1$s</string>
+    <string name="subtitle_hostApprovesJoins">The host approves who joins</string>
+    <string name="action_requestedMinutesAgo">Requested %1$dm ago</string>
+    <string name="action_requestedHoursAgo">Requested %1$dh ago</string>
+    <string name="action_requestedDaysAgo">Requested %1$dd ago</string>
+    <string name="subtitle_requestPendingHost">You\'ll be able to open the chat once %1$s approves</string>
+    <string name="subtitle_requestPendingHostUnnamed">You\'ll be able to open the chat once the host approves</string>
+    <string name="prompt_title_lobbyClosed">%1$s isn\'t taking requests right now</string>
+    <string name="prompt_description_lobbyFull">Too many people are waiting for the host to respond. Try again later</string>
+    <string name="prompt_description_tooManyLobbies">You have too many pending requests. Cancel one to request another</string>
+    <string name="error_title_failedToRequestJoin">Couldn\'t Send Request</string>
+    <string name="error_description_failedToRequestJoin">Something went wrong. Please try again</string>
+    <string name="error_title_failedToCancelJoinRequest">Couldn\'t Cancel Request</string>
+    <string name="error_description_failedToCancelJoinRequest">Something went wrong. Please try again</string>
+    <string name="error_title_failedToApproveJoinRequest">Couldn\'t Approve</string>
+    <string name="error_description_failedToApproveJoinRequest">Something went wrong. Please try again</string>
+    <string name="error_title_failedToDenyJoinRequest">Couldn\'t Deny</string>
+    <string name="error_description_failedToDenyJoinRequest">Something went wrong. Please try again</string>
+    <string name="title_joinRequests">Join Requests</string>
+    <!-- The Requests button on the Chats header and the screen behind it. -->
+    <string name="title_requests">Requests</string>
+    <string name="header_waitingOnYou">Waiting on you</string>
+    <string name="header_sentRequests">Sent</string>
+    <string name="title_noRequests">No requests right now</string>
+    <string name="subtitle_noRequests">Requests to join your private groups, and the ones you send, show up here</string>
+    <plurals name="subtitle_joinRequestsWaiting">
+        <item quantity="one">%1$d person is waiting</item>
+        <item quantity="other">%1$d people are waiting</item>
+    </plurals>
+    <string name="content_description_moreWithRequests">More, people waiting to join</string>
+    <string name="content_description_requestsWaiting">Requests, people waiting to join</string>
+    <string name="subtitle_requestedJustNow">requested just now</string>
+    <string name="subtitle_requestedMinutesAgo">requested %1$dm ago</string>
+    <string name="subtitle_requestedHoursAgo">requested %1$dh ago</string>
+    <string name="subtitle_requestedYesterday">requested yesterday</string>
+    <string name="subtitle_requestedDaysAgo">requested %1$dd ago</string>
+    <string name="action_deny">Deny</string>
+    <string name="action_approve">Approve</string>
+    <string name="subtitle_joinRequestsFooter">Approving shares the group key with them from this device.</string>
+    <string name="title_noJoinRequests">No requests right now</string>
+    <string name="subtitle_noJoinRequests">When someone asks to join %1$s, they\'ll show up here</string>
+    <string name="action_shareGroup">Share Group</string>
+    <!-- In-chat Join Requests anchor (nodes 11354:70, 11354:81). -->
+    <string name="title_wantsToJoin">%1$s wants to join</string>
+    <plurals name="title_peopleWantToJoin">
+        <item quantity="one">%1$d person wants to join</item>
+        <item quantity="other">%1$d people want to join</item>
+    </plurals>
+    <string name="subtitle_namesAnd">and</string>
+    <string name="title_requestedJustNow">Requested just now</string>
+    <string name="title_requestedYesterday">Requested yesterday</string>
+    <string name="action_review">Review</string>
+    <!-- A private group's members (nodes 11210:68, 11210:70). -->
+    <string name="title_members">Members</string>
+    <plurals name="header_memberCount">
+        <item quantity="one">%1$d MEMBER</item>
+        <item quantity="other">%1$d MEMBERS</item>
+    </plurals>
+    <string name="label_host">Host</string>
+    <string name="subtitle_joinedJustNow">Joined just now</string>
+    <string name="subtitle_joinedMinutesAgo">Joined %1$dm ago</string>
+    <string name="subtitle_joinedHoursAgo">Joined %1$dh ago</string>
+    <string name="subtitle_joinedYesterday">Joined yesterday</string>
+    <string name="subtitle_joinedDaysAgo">Joined %1$dd ago</string>
+    <string name="subtitle_joinedLastWeek">Joined last week</string>
+    <string name="subtitle_joinedWeeksAgo">Joined %1$d weeks ago</string>
+    <string name="subtitle_joinedLastMonth">Joined last month</string>
+    <string name="subtitle_joinedMonthsAgo">Joined %1$d months ago</string>
+    <string name="subtitle_privateGroupFootnote">Only people you approve can join. Messages are end-to-end encrypted.</string>
     <string name="action_findByUsername">Find Someone by Username</string>
 
     <!-- Creating a public group (node 10153:22901). -->
@@ -1134,6 +1214,7 @@
     <string name="error_description_groupRulesInvalid">Try a different balance requirement</string>
     <string name="error_title_groupCreateDenied">Can\'t Create This Group</string>
     <string name="error_description_groupCreateDenied">Your account isn\'t able to create public groups</string>
+    <string name="error_description_privateGroupCreateDenied">Your account isn\'t able to create private groups</string>
     <!-- Anything StartChat can fail on that the form cannot explain: an unrecognised result, or the
          transport. The key survives a retry, so trying again resumes the same attempt. -->
     <string name="error_title_groupCreateFailed">Something Went Wrong</string>

apps/flipcash/features/messenger/src/main/kotlin/com/flipcash/app/messenger/ChatFlowScreen.kt

@@ -38,6 +38,8 @@ import com.flipcash.app.messenger.internal.screens.profile.ChatProfileViewModel
 import com.flipcash.app.messenger.internal.screens.profile.GroupProfileScreen
 import com.flipcash.app.messenger.internal.screens.profile.edit.EditGroupCoverScreen
 import com.flipcash.app.messenger.internal.screens.profile.edit.EditGroupDescriptionScreen
+import com.flipcash.app.messenger.internal.screens.profile.JoinRequestsScreen
+import com.flipcash.app.messenger.internal.screens.profile.MembersScreen
 import com.flipcash.app.messenger.internal.screens.profile.edit.EditGroupNameScreen
 import com.flipcash.app.messenger.internal.screens.profile.edit.EditGroupPictureScreen
 import com.flipcash.app.messenger.internal.screens.profile.edit.EditGroupScreen
@@ -119,6 +121,12 @@ private fun chatEntryProvider(
     annotatedEntry<ChatStep.EditGroup> {
         FlowEditGroupScreen()
     }
+    annotatedEntry<ChatStep.JoinRequests> {
+        JoinRequestsScreen(flowSharedViewModel<ChatViewModel>())
+    }
+    annotatedEntry<ChatStep.Members> {
+        MembersScreen(flowSharedViewModel<ChatViewModel>())
+    }
     annotatedEntry<ChatStep.EditGroupName> {
         FlowEditGroupNameScreen()
     }

apps/flipcash/features/messenger/src/main/kotlin/com/flipcash/app/messenger/E2eeLearnMoreScreen.kt

@@ -6,14 +6,19 @@ import com.flipcash.app.messenger.internal.screens.E2eeSheetKind
 import com.getcode.navigation.scenes.LocalBottomSheetDismissDispatcher
 
 /**
- * The DM or group encryption explainer, behind `AppRoute.Messaging.E2eeDmInfo` and `E2eeGroupInfo`.
+ * The DM or group encryption explainer, behind `AppRoute.Messaging.E2eeDmInfo`, `E2eeGroupInfo` and
+ * `E2eePrivateGroupInfo`.
  */
 @Composable
-fun E2eeLearnMoreScreen(forGroup: Boolean) {
+fun E2eeLearnMoreScreen(forGroup: Boolean, isPrivate: Boolean = false) {
     // Exit through the sheet so it animates down rather than having its scene deleted mid-frame.
     val dismissSheet = LocalBottomSheetDismissDispatcher.current
     E2eeLearnMoreSheet(
-        kind = if (forGroup) E2eeSheetKind.Group else E2eeSheetKind.Dm,
+        kind = when {
+            !forGroup -> E2eeSheetKind.Dm
+            isPrivate -> E2eeSheetKind.PrivateGroup
+            else -> E2eeSheetKind.Group
+        },
         onDismiss = dismissSheet,
     )
 }