android: prevent self member actions and add member action confirmations

android/app/src/main/java/ru/daemonlord/messenger/ui/chat/ChatScreen.kt

@@ -1350,6 +1350,7 @@ fun ChatScreen(
                         },
                         members = state.chatMembers,
                         bans = state.chatBans,
+                        selfUserId = state.selfUserId,
                         canManageMembers = state.canManageMembers,
                         canTransferOwnership = state.chatRole.equals("owner", ignoreCase = true),
                         onPromoteMember = onPromoteMember,
@@ -3467,6 +3468,7 @@ private fun ChatInfoTabContent(
     onForceCycleSpeedAudioSourceHandled: (String) -> Unit,
     members: List<ChatMemberItem>,
     bans: List<ChatBanItem>,
+    selfUserId: Long?,
     canManageMembers: Boolean,
     canTransferOwnership: Boolean,
     onPromoteMember: (Long) -> Unit,
@@ -3481,6 +3483,7 @@ private fun ChatInfoTabContent(
         ChatMembersTabContent(
             members = members,
             bans = bans,
+            selfUserId = selfUserId,
             canManageMembers = canManageMembers,
             canTransferOwnership = canTransferOwnership,
             onPromoteMember = onPromoteMember,
@@ -3725,6 +3728,7 @@ private val urlRegex = Regex("""https?://[^\s]+""")
 private fun ChatMembersTabContent(
     members: List<ChatMemberItem>,
     bans: List<ChatBanItem>,
+    selfUserId: Long?,
     canManageMembers: Boolean,
     canTransferOwnership: Boolean,
     onPromoteMember: (Long) -> Unit,
@@ -3734,6 +3738,13 @@ private fun ChatMembersTabContent(
     onTransferOwnership: (Long) -> Unit,
     onUnbanMember: (Long) -> Unit,
 ) {
+    data class PendingMemberAction(
+        val title: String,
+        val body: String,
+        val onConfirm: () -> Unit,
+    )
+    var pendingAction by remember { mutableStateOf<PendingMemberAction?>(null) }
+
     if (members.isEmpty() && bans.isEmpty()) {
         Box(
             modifier = Modifier
@@ -3792,7 +3803,8 @@ private fun ChatMembersTabContent(
                         }
                     }
 
-                    if (canManageMembers && !member.role.equals("owner", ignoreCase = true)) {
+                    val isSelf = selfUserId != null && member.userId == selfUserId
+                    if (canManageMembers && !member.role.equals("owner", ignoreCase = true) && !isSelf) {
                         Row(
                             modifier = Modifier
                                 .fillMaxWidth()
@@ -3807,22 +3819,46 @@ private fun ChatMembersTabContent(
                             }
                             if (member.role.equals("admin", ignoreCase = true)) {
                                 AssistChip(
-                                    onClick = { onDemoteMember(member.userId) },
+                                    onClick = {
+                                        pendingAction = PendingMemberAction(
+                                            title = "Demote admin",
+                                            body = "Demote ${member.name.ifBlank { "@${member.username ?: member.userId}" }} to member?",
+                                            onConfirm = { onDemoteMember(member.userId) },
+                                        )
+                                    },
                                     label = { Text("Demote") },
                                 )
                             }
                             if (canTransferOwnership) {
                                 AssistChip(
-                                    onClick = { onTransferOwnership(member.userId) },
+                                    onClick = {
+                                        pendingAction = PendingMemberAction(
+                                            title = "Transfer ownership",
+                                            body = "Transfer ownership to ${member.name.ifBlank { "@${member.username ?: member.userId}" }}?",
+                                            onConfirm = { onTransferOwnership(member.userId) },
+                                        )
+                                    },
                                     label = { Text("Transfer owner") },
                                 )
                             }
                             AssistChip(
-                                onClick = { onBanMember(member.userId) },
+                                onClick = {
+                                    pendingAction = PendingMemberAction(
+                                        title = "Ban member",
+                                        body = "Ban ${member.name.ifBlank { "@${member.username ?: member.userId}" }}?",
+                                        onConfirm = { onBanMember(member.userId) },
+                                    )
+                                },
                                 label = { Text("Ban") },
                             )
                             AssistChip(
-                                onClick = { onKickMember(member.userId) },
+                                onClick = {
+                                    pendingAction = PendingMemberAction(
+                                        title = "Kick member",
+                                        body = "Kick ${member.name.ifBlank { "@${member.username ?: member.userId}" }} from chat?",
+                                        onConfirm = { onKickMember(member.userId) },
+                                    )
+                                },
                                 label = { Text("Kick") },
                             )
                         }
@@ -3871,6 +3907,24 @@ private fun ChatMembersTabContent(
             }
         }
     }
+    pendingAction?.let { action ->
+        AlertDialog(
+            onDismissRequest = { pendingAction = null },
+            title = { Text(action.title) },
+            text = { Text(action.body) },
+            confirmButton = {
+                TextButton(
+                    onClick = {
+                        action.onConfirm()
+                        pendingAction = null
+                    },
+                ) { Text(stringResource(id = R.string.common_confirm)) }
+            },
+            dismissButton = {
+                TextButton(onClick = { pendingAction = null }) { Text(stringResource(id = R.string.common_cancel)) }
+            },
+        )
+    }
 }
 
 private fun buildChatInfoEntries(messages: List<MessageItem>): List<ChatInfoEntry> {

android/app/src/main/java/ru/daemonlord/messenger/ui/chat/ChatViewModel.kt

@@ -15,6 +15,7 @@ import kotlinx.coroutines.flow.update
 import kotlinx.coroutines.launch
 import ru.daemonlord.messenger.core.notifications.ActiveChatTracker
 import ru.daemonlord.messenger.core.notifications.NotificationDispatcher
+import ru.daemonlord.messenger.core.token.TokenRepository
 import ru.daemonlord.messenger.domain.chat.repository.ChatRepository
 import ru.daemonlord.messenger.domain.chat.usecase.ObserveChatUseCase
 import ru.daemonlord.messenger.domain.chat.usecase.ObserveChatsUseCase
@@ -64,6 +65,7 @@ class ChatViewModel @Inject constructor(
     private val handleRealtimeEventsUseCase: HandleRealtimeEventsUseCase,
     private val activeChatTracker: ActiveChatTracker,
     private val notificationDispatcher: NotificationDispatcher,
+    private val tokenRepository: TokenRepository,
 ) : ViewModel() {
 
     private val chatId: Long = checkNotNull(savedStateHandle["chatId"])
@@ -506,18 +508,34 @@ class ChatViewModel @Inject constructor(
     }
 
     fun promoteMember(userId: Long) {
+        if (userId == uiState.value.selfUserId) {
+            _uiState.update { it.copy(errorMessage = "You cannot change your own role from this screen.") }
+            return
+        }
         updateMemberRole(userId = userId, role = "admin")
     }
 
     fun demoteMember(userId: Long) {
+        if (userId == uiState.value.selfUserId) {
+            _uiState.update { it.copy(errorMessage = "You cannot change your own role from this screen.") }
+            return
+        }
         updateMemberRole(userId = userId, role = "member")
     }
 
     fun transferOwnership(userId: Long) {
+        if (userId == uiState.value.selfUserId) {
+            _uiState.update { it.copy(errorMessage = "Transfer ownership to another member.") }
+            return
+        }
         updateMemberRole(userId = userId, role = "owner")
     }
 
     fun kickMember(userId: Long) {
+        if (userId == uiState.value.selfUserId) {
+            _uiState.update { it.copy(errorMessage = "You cannot kick yourself.") }
+            return
+        }
         viewModelScope.launch {
             when (val result = chatRepository.removeMember(chatId = chatId, userId = userId)) {
                 is AppResult.Success -> refreshMembersAndBans()
@@ -527,6 +545,10 @@ class ChatViewModel @Inject constructor(
     }
 
     fun banMember(userId: Long) {
+        if (userId == uiState.value.selfUserId) {
+            _uiState.update { it.copy(errorMessage = "You cannot ban yourself.") }
+            return
+        }
         viewModelScope.launch {
             when (val result = chatRepository.banMember(chatId = chatId, userId = userId)) {
                 is AppResult.Success -> refreshMembersAndBans()
@@ -807,11 +829,13 @@ class ChatViewModel @Inject constructor(
     private fun refresh() {
         viewModelScope.launch {
             _uiState.update { it.copy(isLoading = true, errorMessage = null) }
+            val selfUserId = tokenRepository.getActiveUserId()
             when (val result = syncRecentMessagesUseCase(chatId = chatId)) {
-                is AppResult.Success -> _uiState.update { it.copy(isLoading = false) }
+                is AppResult.Success -> _uiState.update { it.copy(isLoading = false, selfUserId = selfUserId) }
                 is AppResult.Error -> _uiState.update {
                     it.copy(
                         isLoading = false,
+                        selfUserId = selfUserId,
                         errorMessage = result.reason.toUiMessage(),
                     )
                 }

android/app/src/main/java/ru/daemonlord/messenger/ui/chat/MessageUiState.kt

@@ -7,6 +7,7 @@ import ru.daemonlord.messenger.domain.chat.model.ChatBanItem
 
 data class MessageUiState(
     val chatId: Long = 0L,
+    val selfUserId: Long? = null,
     val isLoading: Boolean = true,
     val isLoadingMore: Boolean = false,
     val isSending: Boolean = false,

android/app/src/main/res/values-ru/strings.xml

@@ -24,6 +24,7 @@
     <string name="toast_night_mode_enabled">Включен ночной режим.</string>
 
     <string name="common_cancel">Отмена</string>
+    <string name="common_confirm">Подтвердить</string>
     <string name="common_close">Закрыть</string>
     <string name="common_delete">Удалить</string>
     <string name="common_send">Отправить</string>

android/app/src/main/res/values/strings.xml

@@ -24,6 +24,7 @@
     <string name="chats_not_found">No chats found</string>
 
     <string name="common_cancel">Cancel</string>
+    <string name="common_confirm">Confirm</string>
     <string name="common_close">Close</string>
     <string name="common_delete">Delete</string>
     <string name="common_send">Send</string>