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add confirmation dialog to chat creation

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This commit introduces a confirmation dialog before creating a new chat. The dialog displays the final chat title, which is now dynamically generated based on the user's input or the names of the selected participants.

Key changes:
- Added a confirmation dialog that appears when the user clicks the "create chat" button.
- Implemented logic to generate a provisional chat title from participants' names if no title is explicitly set.
- Refactored `CreateChatViewModel` by removing the interface and simplifying the implementation.
- Added new string resources for the confirmation dialog.
This commit is contained in:
Danil Nikolaev
2025-12-02 05:31:09 +03:00
parent 6f55251fb7
commit 018151ad18
7 changed files with 128 additions and 71 deletions
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feature/createchat/src/main/kotlin/dev/meloda/fast/conversations/CreateChatViewModel.kt
+93 -65
View File
@@ -17,74 +17,67 @@ import dev.meloda.fast.domain.GetLocalUserByIdUseCase
import dev.meloda.fast.domain.MessagesUseCase
import dev.meloda.fast.domain.util.asPresentation
import dev.meloda.fast.model.BaseError
import dev.meloda.fast.model.api.domain.VkUser
import dev.meloda.fast.network.VkErrorCode
import dev.meloda.fast.ui.model.api.UiFriend
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.StateFlow
import kotlinx.coroutines.flow.asStateFlow
import kotlinx.coroutines.flow.update
import kotlinx.coroutines.launch
import kotlinx.coroutines.withContext
interface CreateChatViewModel {
val screenState: StateFlow<CreateChatScreenState>
val baseError: StateFlow<BaseError?>
val currentOffset: StateFlow<Int>
val canPaginate: StateFlow<Boolean>
val isChatCreated: StateFlow<Long?>
fun onPaginationConditionsMet()
fun onRefresh()
fun onErrorConsumed()
fun toggleFriendSelection(userId: Long)
fun onTitleTextInputChanged(newTitle: String)
fun onCreateChatButtonClicked()
fun onNavigatedBack()
}
class CreateChatViewModelImpl(
class CreateChatViewModel(
private val friendsUseCase: FriendsUseCase,
private val messagesUseCase: MessagesUseCase,
private val imageLoader: ImageLoader,
private val applicationContext: Context,
private val getLocalUserByIdUseCase: GetLocalUserByIdUseCase,
private val userSettings: UserSettings
) : CreateChatViewModel, ViewModel() {
) : ViewModel() {
override val screenState = MutableStateFlow(CreateChatScreenState.EMPTY)
override val baseError = MutableStateFlow<BaseError?>(null)
override val currentOffset = MutableStateFlow(0)
override val canPaginate = MutableStateFlow(false)
private val _screenState = MutableStateFlow(CreateChatScreenState.EMPTY)
val screenState: StateFlow<CreateChatScreenState> = _screenState.asStateFlow()
override val isChatCreated = MutableStateFlow<Long?>(null)
private val _baseError = MutableStateFlow<BaseError?>(null)
val baseError: StateFlow<BaseError?> = _baseError.asStateFlow()
private val currentOffset = MutableStateFlow(0)
private val _canPaginate = MutableStateFlow(false)
val canPaginate: StateFlow<Boolean> = _canPaginate.asStateFlow()
private val _isChatCreated = MutableStateFlow<Long?>(null)
val isChatCreated: StateFlow<Long?> = _isChatCreated.asStateFlow()
private val _finalChatTitle = MutableStateFlow("")
val finalChatTitle: StateFlow<String> = _finalChatTitle.asStateFlow()
private val useContactNames: Boolean = userSettings.useContactNames.value
private var accountUser: VkUser? = null
init {
loadFriends()
fetchAccountUser()
fetchUsers()
}
override fun onPaginationConditionsMet() {
fun onPaginationConditionsMet() {
currentOffset.update { screenState.value.friends.size }
loadFriends()
fetchUsers()
}
override fun onRefresh() {
fun onRefresh() {
onErrorConsumed()
loadFriends(offset = 0)
fetchUsers(offset = 0)
}
override fun onErrorConsumed() {
baseError.setValue { null }
fun onErrorConsumed() {
_baseError.setValue { null }
}
override fun toggleFriendSelection(userId: Long) {
fun toggleFriendSelection(userId: Long) {
val newSelectionList = screenState.value.selectedFriendsIds.toMutableList()
if (newSelectionList.contains(userId)) {
@@ -93,26 +86,69 @@ class CreateChatViewModelImpl(
newSelectionList.add(userId)
}
screenState.setValue { old ->
_screenState.setValue { old ->
old.copy(selectedFriendsIds = newSelectionList)
}
refreshFinalTitle()
}
fun onTitleTextInputChanged(newTitle: String) {
_screenState.setValue { old -> old.copy(chatTitle = newTitle) }
refreshFinalTitle()
}
fun onCreateChatButtonClicked() {
_screenState.setValue { old -> old.copy(showConfirmDialog = true) }
}
fun onNavigatedBack() {
viewModelScope.launch(Dispatchers.Main) {
_isChatCreated.emit(null)
}
}
override fun onTitleTextInputChanged(newTitle: String) {
screenState.setValue { old -> old.copy(chatTitle = newTitle) }
fun onConfirmDialogDismissed() {
_screenState.setValue { old -> old.copy(showConfirmDialog = false) }
}
override fun onCreateChatButtonClicked() {
fun onConfirmDialogConfirmed() {
_screenState.setValue { old -> old.copy(showConfirmDialog = false) }
createChat()
}
override fun onNavigatedBack() {
viewModelScope.launch(Dispatchers.Main) {
isChatCreated.emit(null)
private fun fetchAccountUser() {
viewModelScope.launch {
accountUser = getLocalUserByIdUseCase.proceed(UserConfig.userId)
if (accountUser != null) {
_finalChatTitle.setValue { accountUser?.firstName.orEmpty() }
}
}
}
private fun loadFriends(
private fun refreshFinalTitle() {
if (screenState.value.chatTitle.trim().isNotEmpty()) {
_finalChatTitle.setValue { screenState.value.chatTitle.trim() }
} else {
val accountAsFriend = accountUser?.asPresentation(useContactNames)
val accountList = accountAsFriend?.let(::listOf) ?: emptyList()
val selectedFriends = screenState.value.selectedFriendsIds
.take(3)
.takeIf { it.isNotEmpty() }
?.mapNotNull { userId -> screenState.value.friends.find { it.userId == userId } }
val finalTitle =
(accountList + selectedFriends.orEmpty()).joinToString(transform = UiFriend::firstName)
.plus(if (screenState.value.selectedFriendsIds.size > 3) ", ..." else "")
_finalChatTitle.setValue { finalTitle }
}
}
private fun fetchUsers(
offset: Int = currentOffset.value
) {
friendsUseCase.getFriends(count = LOAD_COUNT, offset = offset)
@@ -121,13 +157,13 @@ class CreateChatViewModelImpl(
error = ::handleError,
success = { response ->
val itemsCountSufficient = response.size == LOAD_COUNT
canPaginate.setValue { itemsCountSufficient }
_canPaginate.setValue { itemsCountSufficient }
val paginationExhausted = !itemsCountSufficient &&
screenState.value.friends.isNotEmpty()
val imagesToPreload =
response.mapNotNull { it.photo100.takeIf { !it.isNullOrEmpty() } }
response.mapNotNull { it.photo100.takeIf { p -> !p.isNullOrEmpty() } }
imagesToPreload.forEach { url ->
imageLoader.enqueue(
@@ -147,11 +183,11 @@ class CreateChatViewModelImpl(
isPaginationExhausted = paginationExhausted
)
if (offset == 0) {
screenState.setValue {
_screenState.setValue {
newState.copy(friends = loadedFriends)
}
} else {
screenState.setValue {
_screenState.setValue {
newState.copy(
friends = newState.friends.plus(loadedFriends)
)
@@ -160,7 +196,7 @@ class CreateChatViewModelImpl(
}
)
screenState.setValue { old ->
_screenState.setValue { old ->
old.copy(
isLoading = offset == 0 && state.isLoading(),
isPaginating = offset > 0 && state.isLoading()
@@ -171,27 +207,19 @@ class CreateChatViewModelImpl(
private fun createChat() {
viewModelScope.launch {
val title = screenState.value.chatTitle.takeUnless(String::isBlank)
val accountAsFriend =
getLocalUserByIdUseCase.proceed(UserConfig.userId)?.asPresentation(useContactNames)
val accountList = accountAsFriend?.let(::listOf) ?: emptyList()
val selectedFriends = screenState.value.selectedFriendsIds
.takeIf { it.isNotEmpty() }
?.mapNotNull { userId -> screenState.value.friends.find { it.userId == userId } }
messagesUseCase.createChat(
userIds = selectedFriends?.map { it.userId },
title = title
?: (accountList + selectedFriends.orEmpty()).joinToString(transform = UiFriend::firstName)
title = finalChatTitle.value
).listenValue(viewModelScope) { state ->
state.processState(
error = ::handleError,
success = { response ->
withContext(Dispatchers.Main) {
isChatCreated.emit(2_000_000_000 + response)
_isChatCreated.emit(2_000_000_000 + response)
}
}
)
@@ -204,11 +232,11 @@ class CreateChatViewModelImpl(
is State.Error.ApiError -> {
when (error.errorCode) {
VkErrorCode.USER_AUTHORIZATION_FAILED -> {
baseError.setValue { BaseError.SessionExpired }
_baseError.setValue { BaseError.SessionExpired }
}
else -> {
baseError.setValue {
_baseError.setValue {
BaseError.SimpleError(message = error.errorMessage)
}
}
@@ -216,19 +244,19 @@ class CreateChatViewModelImpl(
}
State.Error.ConnectionError -> {
baseError.setValue {
_baseError.setValue {
BaseError.SimpleError(message = "Connection error")
}
}
State.Error.InternalError -> {
baseError.setValue {
_baseError.setValue {
BaseError.SimpleError(message = "Internal error")
}
}
State.Error.UnknownError -> {
baseError.setValue {
_baseError.setValue {
BaseError.SimpleError(message = "Unknown error")
}
}
feature/createchat/src/main/kotlin/dev/meloda/fast/conversations/di/CreateChatModule.kt
+2 -2
View File
@@ -1,9 +1,9 @@
package dev.meloda.fast.conversations.di
import dev.meloda.fast.conversations.CreateChatViewModelImpl
import dev.meloda.fast.conversations.CreateChatViewModel
import org.koin.core.module.dsl.viewModelOf
import org.koin.dsl.module
val createChatModule = module {
viewModelOf(::CreateChatViewModelImpl)
viewModelOf(::CreateChatViewModel)
}
feature/createchat/src/main/kotlin/dev/meloda/fast/conversations/model/CreateChatScreenState.kt
+4 -2
View File
@@ -10,7 +10,8 @@ data class CreateChatScreenState(
val isPaginationExhausted: Boolean,
val friends: List<UiFriend>,
val selectedFriendsIds: List<Long>,
val chatTitle: String
val chatTitle: String,
val showConfirmDialog: Boolean
) {
companion object {
val EMPTY: CreateChatScreenState = CreateChatScreenState(
@@ -19,7 +20,8 @@ data class CreateChatScreenState(
isPaginationExhausted = false,
friends = emptyList(),
selectedFriendsIds = emptyList(),
chatTitle = ""
chatTitle = "",
showConfirmDialog = false
)
}
}
feature/createchat/src/main/kotlin/dev/meloda/fast/conversations/navigation/CreateChatNavigation.kt
+1 -2
View File
@@ -6,7 +6,6 @@ import androidx.navigation.NavController
import androidx.navigation.NavGraphBuilder
import androidx.navigation.compose.composable
import dev.meloda.fast.conversations.CreateChatViewModel
import dev.meloda.fast.conversations.CreateChatViewModelImpl
import dev.meloda.fast.conversations.presentation.CreateChatRoute
import kotlinx.serialization.Serializable
import org.koin.compose.viewmodel.koinViewModel
@@ -20,7 +19,7 @@ fun NavGraphBuilder.createChatScreen(
) {
composable<CreateChat> {
val context = LocalContext.current
val viewModel: CreateChatViewModel = koinViewModel<CreateChatViewModelImpl>(
val viewModel: CreateChatViewModel = koinViewModel(
viewModelStoreOwner = context as AppCompatActivity
)
feature/createchat/src/main/kotlin/dev/meloda/fast/conversations/presentation/CreateChatScreen.kt
+22
View File
@@ -64,6 +64,7 @@ import dev.meloda.fast.model.BaseError
import dev.meloda.fast.ui.R
import dev.meloda.fast.ui.components.FullScreenContainedLoader
import dev.meloda.fast.ui.components.IconButton
import dev.meloda.fast.ui.components.MaterialDialog
import dev.meloda.fast.ui.components.NoItemsView
import dev.meloda.fast.ui.components.VkErrorView
import dev.meloda.fast.ui.theme.LocalHazeState
@@ -89,6 +90,27 @@ fun CreateChatRoute(
}
}
if (screenState.showConfirmDialog) {
MaterialDialog(
onDismissRequest = viewModel::onConfirmDialogDismissed,
title = stringResource(R.string.confirm),
text = when {
screenState.selectedFriendsIds.isEmpty() -> stringResource(
R.string.confirm_chat_create_empty_with_title,
viewModel.finalChatTitle.value
)
else -> stringResource(
R.string.confirm_chat_create_with_title,
viewModel.finalChatTitle.value
)
},
confirmAction = viewModel::onConfirmDialogConfirmed,
confirmText = stringResource(R.string.action_create),
cancelText = stringResource(R.string.cancel)
)
}
CreateChatScreen(
screenState = screenState,
baseError = baseError,