Prompt the user when the invited MatrixId is not recognized (#8483)

changelog.d/8468.bugfix

@@ -0,0 +1 @@
+Prompt the user when the invited MatrixId is not recognized

library/ui-strings/src/main/res/values/strings.xml

@@ -1729,6 +1729,8 @@
     <string name="create_room_public_title">"Public"</string>
     <string name="create_room_public_description">"Anyone will be able to join this room"</string>
     <string name="create_room_federation_error">"The room has been created, but some invitations have not been sent for the following reason:\n\n%s"</string>
+    <string name="create_room_unknown_users_dialog_content">Unable to find profiles for the Matrix IDs listed below. Would you like to start a chat anyway?\n\n%s</string>
+    <string name="create_room_unknown_users_dialog_submit">Start chat anyway</string>
 
     <string name="keys_backup_unable_to_get_trust_info">"An error occurred getting trust info"</string>
     <string name="keys_backup_unable_to_get_keys_backup_data">"An error occurred getting keys backup data"</string>
@@ -2744,6 +2746,8 @@
         <item quantity="other">Invitations sent to %1$s and %2$d more</item>
     </plurals>
     <string name="invite_users_to_room_failure">We could not invite users. Please check the users you want to invite and try again.</string>
+    <string name="invite_unknown_users_dialog_content">Unable to find profiles for the Matrix IDs listed below. Would you like to invite them anyway?\n\n%s</string>
+    <string name="invite_unknown_users_dialog_submit">Invite anyway</string>
 
     <string name="user_code_scan">Scan a QR code</string>
     <string name="user_code_share">Share my code</string>

vector/src/main/java/im/vector/app/features/createdirect/CreateDirectRoomActivity.kt

@@ -48,6 +48,7 @@ import im.vector.app.features.qrcode.QrCodeScannerEvents
 import im.vector.app.features.qrcode.QrCodeScannerFragment
 import im.vector.app.features.qrcode.QrCodeScannerViewModel
 import im.vector.app.features.qrcode.QrScannerArgs
+import im.vector.app.features.userdirectory.PendingSelection
 import im.vector.app.features.userdirectory.UserListFragment
 import im.vector.app.features.userdirectory.UserListFragmentArgs
 import im.vector.app.features.userdirectory.UserListSharedAction
@@ -160,7 +161,19 @@ class CreateDirectRoomActivity : SimpleFragmentActivity() {
     }
 
     private fun handleOnMenuItemSubmitClick(action: UserListSharedAction.OnMenuItemSubmitClick) {
-        viewModel.handle(CreateDirectRoomAction.PrepareRoomWithSelectedUsers(action.selections))
+        val unknownUsers = action.selections.filter { it is PendingSelection.UserPendingSelection && it.isUnknownUser }
+        if (unknownUsers.isEmpty()) {
+            viewModel.handle(CreateDirectRoomAction.PrepareRoomWithSelectedUsers(action.selections))
+        } else {
+            MaterialAlertDialogBuilder(this)
+                    .setTitle(R.string.dialog_title_confirmation)
+                    .setMessage(getString(R.string.create_room_unknown_users_dialog_content, unknownUsers.joinToString("\n • ", " • ") { it.getMxId() }))
+                    .setPositiveButton(R.string.create_room_unknown_users_dialog_submit) { _, _ ->
+                        viewModel.handle(CreateDirectRoomAction.PrepareRoomWithSelectedUsers(action.selections))
+                    }
+                    .setNegativeButton(R.string.action_cancel, null)
+                    .show()
+        }
     }
 
     private fun renderCreateAndInviteState(state: Async<String>) {

vector/src/main/java/im/vector/app/features/invite/InviteUsersToRoomActivity.kt

@@ -37,6 +37,7 @@ import im.vector.app.core.utils.onPermissionDeniedSnackbar
 import im.vector.app.core.utils.registerForPermissionsResult
 import im.vector.app.core.utils.toast
 import im.vector.app.features.contactsbook.ContactsBookFragment
+import im.vector.app.features.userdirectory.PendingSelection
 import im.vector.app.features.userdirectory.UserListFragment
 import im.vector.app.features.userdirectory.UserListFragmentArgs
 import im.vector.app.features.userdirectory.UserListSharedAction
@@ -94,7 +95,19 @@ class InviteUsersToRoomActivity : SimpleFragmentActivity() {
     }
 
     private fun handleOnMenuItemSubmitClick(action: UserListSharedAction.OnMenuItemSubmitClick) {
-        viewModel.handle(InviteUsersToRoomAction.InviteSelectedUsers(action.selections))
+        val unknownUsers = action.selections.filter { it is PendingSelection.UserPendingSelection && it.isUnknownUser }
+        if (unknownUsers.isEmpty()) {
+            viewModel.handle(InviteUsersToRoomAction.InviteSelectedUsers(action.selections))
+        } else {
+            MaterialAlertDialogBuilder(this)
+                    .setTitle(R.string.dialog_title_confirmation)
+                    .setMessage(getString(R.string.invite_unknown_users_dialog_content, unknownUsers.joinToString("\n • ", " • ") { it.getMxId() }))
+                    .setPositiveButton(R.string.invite_unknown_users_dialog_submit) { _, _ ->
+                        viewModel.handle(InviteUsersToRoomAction.InviteSelectedUsers(action.selections))
+                    }
+                    .setNegativeButton(R.string.action_cancel, null)
+                    .show()
+        }
     }
 
     private fun openPhoneBook() {

vector/src/main/java/im/vector/app/features/userdirectory/PendingSelection.kt

@@ -22,7 +22,7 @@ import org.matrix.android.sdk.api.session.user.model.User
 import org.matrix.android.sdk.api.util.toMatrixItem
 
 sealed class PendingSelection {
-    data class UserPendingSelection(val user: User) : PendingSelection()
+    data class UserPendingSelection(val user: User, var isUnknownUser: Boolean = false) : PendingSelection()
     data class ThreePidPendingSelection(val threePid: ThreePid) : PendingSelection()
 
     fun getBestName(): String {

vector/src/main/java/im/vector/app/features/userdirectory/UserListViewModel.kt

@@ -260,6 +260,7 @@ class UserListViewModel @AssistedInject constructor(
                         .sortedBy { it.toMatrixItem().firstLetterOfDisplayName() }
                 val userProfile = if (MatrixPatterns.isUserId(search)) {
                     val user = tryOrNull { session.profileService().getProfileAsUser(search) }
+                    setState { copy(unknownUserId = search.takeIf { user == null }) }
                     User(
                             userId = search,
                             displayName = user?.displayName,
@@ -284,6 +285,9 @@ class UserListViewModel @AssistedInject constructor(
                 (action.pendingSelection is PendingSelection.UserPendingSelection &&
                         state.pendingSelections.last() is PendingSelection.UserPendingSelection)
         if (canSelectUser) {
+            if (action.pendingSelection is PendingSelection.UserPendingSelection) {
+                action.pendingSelection.isUnknownUser = action.pendingSelection.getMxId() == state.unknownUserId
+            }
             val selections = state.pendingSelections.toggle(action.pendingSelection, singleElement = state.singleSelection)
             setState { copy(pendingSelections = selections) }
         }

vector/src/main/java/im/vector/app/features/userdirectory/UserListViewState.kt

@@ -30,6 +30,7 @@ data class UserListViewState(
         val matchingEmail: Async<ThreePidUser?> = Uninitialized,
         val filteredMappedContacts: List<MappedContact> = emptyList(),
         val pendingSelections: Set<PendingSelection> = emptySet(),
+        val unknownUserId: String? = null,
         val searchTerm: String = "",
         val singleSelection: Boolean,
         val single3pidSelection: Boolean,