From 96f45aef6a47e766f3db43ffe9afa8a444a7139d Mon Sep 17 00:00:00 2001
From: Codex <codex@openai.com>
Date: Thu, 14 May 2026 18:21:03 +0300
Subject: [PATCH] refactor: extract pinned message handling

---
 .../messageshistory/MessagesHistoryLoaders.kt |  1 -
 .../MessagesHistoryPinnedMessageHandler.kt    | 51 +++++++++++++++++++
 .../MessagesHistoryViewModelImpl.kt           | 50 +++---------------
 3 files changed, 58 insertions(+), 44 deletions(-)
 create mode 100644 feature/messageshistory/src/main/kotlin/dev/meloda/fast/messageshistory/MessagesHistoryPinnedMessageHandler.kt

diff --git a/feature/messageshistory/src/main/kotlin/dev/meloda/fast/messageshistory/MessagesHistoryLoaders.kt b/feature/messageshistory/src/main/kotlin/dev/meloda/fast/messageshistory/MessagesHistoryLoaders.kt
index caba7999..7f2da1c7 100644
--- a/feature/messageshistory/src/main/kotlin/dev/meloda/fast/messageshistory/MessagesHistoryLoaders.kt
+++ b/feature/messageshistory/src/main/kotlin/dev/meloda/fast/messageshistory/MessagesHistoryLoaders.kt
@@ -3,7 +3,6 @@ package dev.meloda.fast.messageshistory
 import android.util.Log
 import dev.meloda.fast.common.VkConstants
 import dev.meloda.fast.common.extensions.listenValue
-import dev.meloda.fast.common.extensions.orDots
 import dev.meloda.fast.common.extensions.setValue
 import dev.meloda.fast.common.paging.canPaginate as canPaginatePage
 import dev.meloda.fast.common.paging.isPaginationExhausted as isPaginationExhaustedPage
diff --git a/feature/messageshistory/src/main/kotlin/dev/meloda/fast/messageshistory/MessagesHistoryPinnedMessageHandler.kt b/feature/messageshistory/src/main/kotlin/dev/meloda/fast/messageshistory/MessagesHistoryPinnedMessageHandler.kt
new file mode 100644
index 00000000..b5a2254c
--- /dev/null
+++ b/feature/messageshistory/src/main/kotlin/dev/meloda/fast/messageshistory/MessagesHistoryPinnedMessageHandler.kt
@@ -0,0 +1,51 @@
+package dev.meloda.fast.messageshistory
+
+import androidx.compose.ui.text.buildAnnotatedString
+import dev.meloda.fast.common.extensions.orDots
+import dev.meloda.fast.common.extensions.setValue
+import dev.meloda.fast.data.VkMemoryCache
+import dev.meloda.fast.messageshistory.model.MessagesHistoryScreenState
+import dev.meloda.fast.model.api.domain.VkMessage
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlin.math.abs
+
+internal class MessagesHistoryPinnedMessageHandler(
+    private val screenState: MutableStateFlow<MessagesHistoryScreenState>
+) {
+    fun update(pinnedMessage: VkMessage?) {
+        if (pinnedMessage == null) {
+            screenState.setValue { old ->
+                old.copy(
+                    pinnedMessage = null,
+                    convo = old.convo.copy(
+                        pinnedMessage = null,
+                        pinnedMessageId = null
+                    ),
+                    pinnedSummary = null,
+                    pinnedTitle = null
+                )
+            }
+            return
+        }
+
+        val pinnedUser = VkMemoryCache.getUser(pinnedMessage.fromId)
+        val pinnedGroup = VkMemoryCache.getGroup(abs(pinnedMessage.fromId))
+        val pinnedTitle = pinnedUser?.fullName ?: pinnedGroup?.name
+
+        val pinnedSummary = buildAnnotatedString {
+            pinnedMessage.text?.let(::append) ?: append("...")
+        }
+
+        screenState.setValue { old ->
+            old.copy(
+                pinnedMessage = pinnedMessage,
+                convo = old.convo.copy(
+                    pinnedMessage = pinnedMessage,
+                    pinnedMessageId = pinnedMessage.id
+                ),
+                pinnedSummary = pinnedSummary,
+                pinnedTitle = pinnedTitle.orDots()
+            )
+        }
+    }
+}
diff --git a/feature/messageshistory/src/main/kotlin/dev/meloda/fast/messageshistory/MessagesHistoryViewModelImpl.kt b/feature/messageshistory/src/main/kotlin/dev/meloda/fast/messageshistory/MessagesHistoryViewModelImpl.kt
index 3ff39b8b..561ed12d 100644
--- a/feature/messageshistory/src/main/kotlin/dev/meloda/fast/messageshistory/MessagesHistoryViewModelImpl.kt
+++ b/feature/messageshistory/src/main/kotlin/dev/meloda/fast/messageshistory/MessagesHistoryViewModelImpl.kt
@@ -2,7 +2,6 @@ package dev.meloda.fast.messageshistory
 
 import android.content.Context
 import android.os.Bundle
-import androidx.compose.ui.text.buildAnnotatedString
 import androidx.compose.ui.text.TextRange
 import androidx.compose.ui.text.input.TextFieldValue
 import androidx.lifecycle.SavedStateHandle
@@ -11,10 +10,9 @@ import androidx.lifecycle.viewModelScope
 import com.conena.nanokt.collections.indexOfFirstOrNull
 import dev.meloda.fast.common.extensions.getParcelableCompat
 import dev.meloda.fast.common.extensions.listenValue
-import dev.meloda.fast.common.extensions.orDots
 import dev.meloda.fast.common.extensions.setValue
 import dev.meloda.fast.common.provider.ResourceProvider
-import dev.meloda.fast.data.VkMemoryCache
+import dev.meloda.fast.datastore.AppSettings
 import dev.meloda.fast.domain.ConvoUseCase
 import dev.meloda.fast.domain.GetMessageReadPeersUseCase
 import dev.meloda.fast.domain.LongPollUpdatesParser
@@ -33,7 +31,6 @@ import kotlinx.coroutines.flow.update
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.suspendCancellableCoroutine
 import kotlin.coroutines.resume
-import kotlin.math.abs
 
 class MessagesHistoryViewModelImpl(
     private val applicationContext: Context,
@@ -64,6 +61,10 @@ class MessagesHistoryViewModelImpl(
     override val messages = MutableStateFlow<List<VkMessage>>(emptyList())
     override val uiMessages = MutableStateFlow<List<MessageUiItem>>(emptyList())
 
+    private val pinnedMessageHandler = MessagesHistoryPinnedMessageHandler(
+        screenState = screenState
+    )
+
     private val messageActions = MessagesHistoryMessageActions(
         applicationContext = applicationContext,
         viewModelScope = viewModelScope,
@@ -75,7 +76,7 @@ class MessagesHistoryViewModelImpl(
         showKeyboard = showKeyboard,
         dialog = dialog,
         syncUiMessages = ::syncUiMessages,
-        onPinnedMessageChanged = ::handlePinnedMessage
+        onPinnedMessageChanged = pinnedMessageHandler::update
     )
 
     private val loaders = MessagesHistoryLoaders(
@@ -89,7 +90,7 @@ class MessagesHistoryViewModelImpl(
         baseError = baseError,
         scope = viewModelScope,
         syncUiMessages = ::syncUiMessages,
-        onPinnedMessage = ::handlePinnedMessage
+        onPinnedMessage = pinnedMessageHandler::update
     )
 
     private val longPollEventHandler = MessagesHistoryLongPollEventHandler(
@@ -497,43 +498,6 @@ class MessagesHistoryViewModelImpl(
             }
         }
 
-    private fun handlePinnedMessage(pinnedMessage: VkMessage?) {
-        if (pinnedMessage == null) {
-            screenState.setValue { old ->
-                old.copy(
-                    pinnedMessage = null,
-                    convo = old.convo.copy(
-                        pinnedMessage = null,
-                        pinnedMessageId = null
-                    ),
-                    pinnedSummary = null,
-                    pinnedTitle = null
-                )
-            }
-            return
-        }
-
-        val pinnedUser = VkMemoryCache.getUser(pinnedMessage.fromId)
-        val pinnedGroup = VkMemoryCache.getGroup(abs(pinnedMessage.fromId))
-        val pinnedTitle = pinnedUser?.fullName ?: pinnedGroup?.name
-
-        val pinnedSummary = buildAnnotatedString {
-            pinnedMessage.text?.let(::append) ?: append("...")
-        }
-
-        screenState.setValue { old ->
-            old.copy(
-                pinnedMessage = pinnedMessage,
-                convo = old.convo.copy(
-                    pinnedMessage = pinnedMessage,
-                    pinnedMessageId = pinnedMessage.id
-                ),
-                pinnedSummary = pinnedSummary,
-                pinnedTitle = pinnedTitle.orDots()
-            )
-        }
-    }
-
     private fun syncUiMessages(): List<MessageUiItem> {
         val newUiMessages = buildMessagesHistoryUiMessages(
             messages = messages.value,