Chat creation feature (#138)

feature/messageshistory/src/main/kotlin/dev/meloda/fast/messageshistory/MessagesHistoryViewModel.kt

@@ -29,6 +29,7 @@ import dev.meloda.fast.messageshistory.navigation.MessagesHistory
 import dev.meloda.fast.messageshistory.util.asPresentation
 import dev.meloda.fast.messageshistory.util.extractAvatar
 import dev.meloda.fast.messageshistory.util.extractTitle
+import dev.meloda.fast.messageshistory.util.findMessageById
 import dev.meloda.fast.model.BaseError
 import dev.meloda.fast.model.LongPollEvent
 import dev.meloda.fast.model.api.domain.VkAttachment
@@ -160,7 +161,9 @@ class MessagesHistoryViewModelImpl(
         val message = event.message
 
         Log.d("MessagesHistoryViewModel", "handleNewMessage: $message")
+
         if (message.peerId != screenState.value.conversationId) return
+        if (screenState.value.messages.findMessageById(message.id) != null) return
 
         val randomIds = messages.value.map(VkMessage::randomId)
         if (message.randomId != 0 && message.randomId in randomIds) return

feature/messageshistory/src/main/kotlin/dev/meloda/fast/messageshistory/presentation/MessagesHistoryScreen.kt

@@ -282,6 +282,7 @@ fun MessagesHistoryScreen(
 
                                     // TODO: 11/07/2024, Danil Nikolaev: to VM
 
+                                    // TODO: 23-Mar-25, Danil Nikolaev: crash if not messages (ex. new chat)
                                     onChatMaterialsDropdownItemClicked(
                                         screenState.conversationId,
                                         screenState.messages.firstMessage().conversationMessageId

feature/messageshistory/src/main/kotlin/dev/meloda/fast/messageshistory/util/Ext.kt

@@ -4,11 +4,13 @@ import dev.meloda.fast.messageshistory.model.UiItem
 
 fun List<UiItem>.firstMessage(): UiItem.Message = filterIsInstance<UiItem.Message>().first()
 
+fun List<UiItem>.firstMessageOrNull(): UiItem.Message? = filterIsInstance<UiItem.Message>().firstOrNull()
+
 fun List<UiItem>.indexOfMessageById(messageId: Int): Int =
     indexOfFirst { it.id == messageId }
 
-fun List<UiItem>.findMessageById(messageId: Int): UiItem.Message =
-    first { it.id == messageId } as UiItem.Message
+fun List<UiItem>.findMessageById(messageId: Int): UiItem.Message? =
+    firstOrNull { it.id == messageId } as UiItem.Message?
 
 fun List<UiItem>.indexOfMessageByCmId(cmId: Int): Int =
     indexOfFirst { it.cmId == cmId }