[wip] chat materials; some experiments with local composition and blur

feature/chatmaterials/build.gradle.kts

@@ -27,6 +27,7 @@ android {
     }
     kotlinOptions {
         jvmTarget = Configs.java.toString()
+        freeCompilerArgs = listOf("-opt-in=kotlin.RequiresOptIn", "-Xcontext-receivers")
     }
     buildFeatures {
         compose = true

feature/chatmaterials/src/main/kotlin/com/meloda/app/fast/chatmaterials/ChatMaterialsScreenContent.kt

@@ -1,91 +0,0 @@
-package com.meloda.app.fast.chatmaterials
-
-import android.annotation.SuppressLint
-import androidx.compose.foundation.layout.Arrangement
-import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.foundation.layout.wrapContentHeight
-import androidx.compose.foundation.lazy.grid.GridCells
-import androidx.compose.foundation.lazy.grid.LazyVerticalGrid
-import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.automirrored.rounded.ArrowBack
-import androidx.compose.material3.ExperimentalMaterial3Api
-import androidx.compose.material3.Icon
-import androidx.compose.material3.IconButton
-import androidx.compose.material3.Scaffold
-import androidx.compose.material3.Text
-import androidx.compose.material3.TopAppBar
-import androidx.compose.material3.TopAppBarDefaults
-import androidx.compose.runtime.Composable
-import androidx.compose.runtime.remember
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.layout.ContentScale
-import androidx.compose.ui.unit.dp
-import coil.compose.AsyncImage
-import dev.chrisbanes.haze.HazeState
-import dev.chrisbanes.haze.haze
-import dev.chrisbanes.haze.hazeChild
-import dev.chrisbanes.haze.materials.ExperimentalHazeMaterialsApi
-import dev.chrisbanes.haze.materials.HazeMaterials
-
-@SuppressLint("UnusedMaterial3ScaffoldPaddingParameter")
-@OptIn(
-    ExperimentalMaterial3Api::class,
-    ExperimentalHazeMaterialsApi::class
-)
-@Composable
-fun ChatMaterialsScreen(
-    onBack: () -> Unit
-) {
-    val hazeState = remember { HazeState() }
-
-    Scaffold(
-        topBar = {
-            TopAppBar(
-                title = {
-                    Text(text = "Chat Materials")
-                },
-                colors = TopAppBarDefaults.largeTopAppBarColors(Color.Transparent),
-                modifier = Modifier
-                    .hazeChild(
-                        state = hazeState,
-                        style = HazeMaterials.ultraThin()
-                    )
-                    .fillMaxWidth(),
-                navigationIcon = {
-                    IconButton(
-                        onClick = onBack
-                    ) {
-                        Icon(
-                            imageVector = Icons.AutoMirrored.Rounded.ArrowBack,
-                            contentDescription = null
-                        )
-                    }
-                }
-            )
-        }
-    ) {
-        LazyVerticalGrid(
-            columns = GridCells.Adaptive(200.dp),
-            horizontalArrangement = Arrangement.spacedBy(4.dp),
-            modifier = Modifier
-                .haze(
-                    state = hazeState,
-                    style = HazeMaterials.ultraThin()
-                )
-        ) {
-            items(100) { index ->
-                val link = "https://random.imagecdn.app/500/150"
-
-                AsyncImage(
-                    model = link,
-                    contentDescription = "Image",
-                    contentScale = ContentScale.Crop,
-                    modifier = Modifier
-                        .fillMaxWidth()
-                        .wrapContentHeight()
-                )
-            }
-        }
-    }
-}

feature/chatmaterials/src/main/kotlin/com/meloda/app/fast/chatmaterials/ChatMaterialsViewModel.kt

@@ -0,0 +1,130 @@
+package com.meloda.app.fast.chatmaterials
+
+import androidx.lifecycle.SavedStateHandle
+import androidx.lifecycle.ViewModel
+import com.meloda.app.fast.chatmaterials.model.ChatMaterialsScreenState
+import com.meloda.app.fast.chatmaterials.navigation.ChatMaterials
+import com.meloda.app.fast.chatmaterials.util.asPresentation
+import com.meloda.app.fast.common.extensions.listenValue
+import com.meloda.app.fast.common.extensions.setValue
+import com.meloda.app.fast.data.api.messages.MessagesUseCase
+import com.meloda.app.fast.data.processState
+import com.meloda.app.fast.model.BaseError
+import com.meloda.app.fast.model.api.domain.VkAttachmentHistoryMessage
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.update
+
+interface ChatMaterialsViewModel {
+    val screenState: StateFlow<ChatMaterialsScreenState>
+    val baseError: StateFlow<BaseError?>
+    val imagesToPreload: StateFlow<List<String>>
+    val currentOffset: StateFlow<Int>
+    val canPaginate: StateFlow<Boolean>
+
+    fun onMetPaginationCondition()
+
+    fun onRefresh()
+
+    fun onErrorConsumed()
+
+    fun onTypeChanged(newType: String)
+}
+
+class ChatMaterialsViewModelImpl(
+    private val messagesUseCase: MessagesUseCase,
+    savedStateHandle: SavedStateHandle
+) : ViewModel(), ChatMaterialsViewModel {
+
+    override val screenState = MutableStateFlow(ChatMaterialsScreenState.EMPTY)
+
+    override val baseError = MutableStateFlow<BaseError?>(null)
+    override val imagesToPreload = MutableStateFlow<List<String>>(emptyList())
+    override val currentOffset = MutableStateFlow(0)
+    override val canPaginate = MutableStateFlow(false)
+
+    init {
+        val arguments = ChatMaterials.from(savedStateHandle)
+
+        screenState.setValue { old ->
+            old.copy(
+                peerId = arguments.peerId,
+                conversationMessageId = arguments.conversationMessageId
+            )
+        }
+
+        loadChatMaterials()
+    }
+
+    override fun onMetPaginationCondition() {
+        currentOffset.update { screenState.value.materials.size }
+        loadChatMaterials()
+    }
+
+    override fun onRefresh() {
+        loadChatMaterials(offset = 0)
+    }
+
+    override fun onErrorConsumed() {
+        baseError.setValue { null }
+    }
+
+    override fun onTypeChanged(newType: String) {
+        screenState.setValue { old -> old.copy(attachmentType = newType) }
+        loadChatMaterials(0)
+    }
+
+    private fun loadChatMaterials(
+        offset: Int = currentOffset.value
+    ) {
+        messagesUseCase.getHistoryAttachments(
+            peerId = screenState.value.peerId,
+            count = LOAD_COUNT,
+            offset = offset,
+            attachmentTypes = listOf(screenState.value.attachmentType),
+            conversationMessageId = screenState.value.conversationMessageId
+        ).listenValue { state ->
+            state.processState(
+                error = { error ->
+
+                },
+                success = { response ->
+                    val itemsCountSufficient = response.size == LOAD_COUNT
+                    canPaginate.setValue { itemsCountSufficient }
+
+                    val paginationExhausted = !itemsCountSufficient &&
+                            screenState.value.materials.size >= LOAD_COUNT
+
+                    val loadedMaterials = response.map(VkAttachmentHistoryMessage::asPresentation)
+
+                    val newState = screenState.value.copy(
+                        isPaginationExhausted = paginationExhausted
+                    )
+
+                    if (offset == 0) {
+                        screenState.setValue {
+                            newState.copy(materials = loadedMaterials)
+                        }
+                    } else {
+                        screenState.setValue {
+                            newState.copy(
+                                materials = newState.materials.plus(loadedMaterials)
+                            )
+                        }
+                    }
+                }
+            )
+
+            screenState.setValue { old ->
+                old.copy(
+                    isLoading = offset == 0 && state.isLoading(),
+                    isPaginating = offset > 0 && state.isLoading()
+                )
+            }
+        }
+    }
+
+    companion object {
+        const val LOAD_COUNT = 100
+    }
+}

feature/chatmaterials/src/main/kotlin/com/meloda/app/fast/chatmaterials/di/ChatMaterialsModule.kt

@@ -0,0 +1,9 @@
+package com.meloda.app.fast.chatmaterials.di
+
+import com.meloda.app.fast.chatmaterials.ChatMaterialsViewModelImpl
+import org.koin.androidx.viewmodel.dsl.viewModelOf
+import org.koin.dsl.module
+
+val chatMaterialsModule = module {
+    viewModelOf(::ChatMaterialsViewModelImpl)
+}

feature/chatmaterials/src/main/kotlin/com/meloda/app/fast/chatmaterials/model/ChatMaterialsScreenState.kt

@@ -0,0 +1,24 @@
+package com.meloda.app.fast.chatmaterials.model
+
+data class ChatMaterialsScreenState(
+    val isLoading: Boolean,
+    val materials: List<UiChatMaterial>,
+    val attachmentType: String,
+    val isPaginating: Boolean,
+    val isPaginationExhausted: Boolean,
+    val peerId: Int,
+    val conversationMessageId: Int
+) {
+
+    companion object {
+        val EMPTY: ChatMaterialsScreenState = ChatMaterialsScreenState(
+            isLoading = true,
+            materials = emptyList(),
+            attachmentType = "photo",
+            isPaginating = false,
+            isPaginationExhausted = false,
+            peerId = -1,
+            conversationMessageId = -1
+        )
+    }
+}

feature/chatmaterials/src/main/kotlin/com/meloda/app/fast/chatmaterials/model/UiChatMaterial.kt

@@ -0,0 +1,28 @@
+package com.meloda.app.fast.chatmaterials.model
+
+sealed class UiChatMaterial {
+
+    data class Photo(
+        val previewUrl: String
+    ) : UiChatMaterial()
+
+    data class Video(
+        val previewUrl: String
+    ) : UiChatMaterial()
+
+    data class Audio(
+        val previewUrl: String?,
+        val title: String,
+        val artist: String,
+        val duration: String
+    ) : UiChatMaterial()
+
+    data class File(
+        val title: String
+    ) : UiChatMaterial()
+
+    data class Link(
+        val title: String,
+        val previewUrl: String?
+    ) : UiChatMaterial()
+}

feature/chatmaterials/src/main/kotlin/com/meloda/app/fast/chatmaterials/navigation/ChatMaterialsRoute.kt

@@ -1,13 +1,23 @@
 package com.meloda.app.fast.chatmaterials.navigation
 
+import androidx.lifecycle.SavedStateHandle
 import androidx.navigation.NavController
 import androidx.navigation.NavGraphBuilder
 import androidx.navigation.compose.composable
-import com.meloda.app.fast.chatmaterials.ChatMaterialsScreen
+import androidx.navigation.toRoute
+import com.meloda.app.fast.chatmaterials.presentation.ChatMaterialsScreen
 import kotlinx.serialization.Serializable
 
 @Serializable
-data class ChatMaterials(val a: String)
+data class ChatMaterials(
+    val peerId: Int,
+    val conversationMessageId: Int
+) {
+    companion object {
+        fun from(savedStateHandle: SavedStateHandle) =
+            savedStateHandle.toRoute<ChatMaterials>()
+    }
+}
 
 fun NavGraphBuilder.chatMaterialsRoute(
     onBack: () -> Unit
@@ -19,6 +29,11 @@ fun NavGraphBuilder.chatMaterialsRoute(
     }
 }
 
-fun NavController.navigateToChatMaterials() {
-    this.navigate(ChatMaterials(""))
+fun NavController.navigateToChatMaterials(peerId: Int, conversationMessageId: Int) {
+    this.navigate(
+        ChatMaterials(
+            peerId = peerId,
+            conversationMessageId = conversationMessageId
+        )
+    )
 }

feature/chatmaterials/src/main/kotlin/com/meloda/app/fast/chatmaterials/presentation/ChatMaterialItem.kt

@@ -0,0 +1,68 @@
+package com.meloda.app.fast.chatmaterials.presentation
+
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.aspectRatio
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.layout.ContentScale
+import coil.ImageLoader
+import coil.compose.AsyncImage
+import com.meloda.app.fast.chatmaterials.model.UiChatMaterial
+
+@Composable
+fun ChatMaterialItem(
+    item: UiChatMaterial,
+    imageLoader: ImageLoader
+) {
+    when (item) {
+        is UiChatMaterial.Photo -> {
+            AsyncImage(
+                model = item.previewUrl,
+                contentDescription = null,
+                imageLoader = imageLoader,
+                contentScale = ContentScale.Crop,
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .aspectRatio(1f)
+            )
+        }
+
+        is UiChatMaterial.Video -> {
+            AsyncImage(
+                model = item.previewUrl,
+                contentDescription = null,
+                imageLoader = imageLoader,
+                contentScale = ContentScale.Crop,
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .aspectRatio(1f)
+            )
+        }
+
+        is UiChatMaterial.Audio -> {
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                verticalAlignment = Alignment.CenterVertically
+            ) {
+                Column(modifier = Modifier.weight(1f)) {
+                    Text(
+                        text = item.title,
+                        style = MaterialTheme.typography.bodyLarge
+                    )
+                    Text(text = item.artist)
+                }
+
+                Text(text = item.duration)
+            }
+        }
+
+        is UiChatMaterial.File -> {}
+
+        is UiChatMaterial.Link -> {}
+    }
+}

feature/chatmaterials/src/main/kotlin/com/meloda/app/fast/chatmaterials/presentation/ChatMaterialsScreen.kt

@@ -0,0 +1,352 @@
+package com.meloda.app.fast.chatmaterials.presentation
+
+import android.annotation.SuppressLint
+import android.util.Log
+import androidx.compose.animation.animateColorAsState
+import androidx.compose.animation.core.animateFloatAsState
+import androidx.compose.animation.core.tween
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.calculateEndPadding
+import androidx.compose.foundation.layout.calculateStartPadding
+import androidx.compose.foundation.layout.defaultMinSize
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.grid.GridCells
+import androidx.compose.foundation.lazy.grid.LazyVerticalGrid
+import androidx.compose.foundation.lazy.grid.items
+import androidx.compose.foundation.lazy.grid.rememberLazyGridState
+import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.lazy.rememberLazyListState
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.automirrored.rounded.ArrowBack
+import androidx.compose.material.icons.outlined.MoreVert
+import androidx.compose.material.icons.rounded.Refresh
+import androidx.compose.material3.DropdownMenu
+import androidx.compose.material3.DropdownMenuItem
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.HorizontalDivider
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.RadioButton
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults
+import androidx.compose.material3.pulltorefresh.PullToRefreshContainer
+import androidx.compose.material3.pulltorefresh.rememberPullToRefreshState
+import androidx.compose.material3.surfaceColorAtElevation
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableIntStateOf
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.saveable.rememberSaveable
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.alpha
+import androidx.compose.ui.input.nestedscroll.nestedScroll
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.unit.DpOffset
+import androidx.compose.ui.unit.LayoutDirection
+import androidx.compose.ui.unit.dp
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import coil.imageLoader
+import com.meloda.app.fast.chatmaterials.ChatMaterialsViewModel
+import com.meloda.app.fast.chatmaterials.ChatMaterialsViewModelImpl
+import com.meloda.app.fast.designsystem.LocalTheme
+import com.meloda.app.fast.designsystem.R
+import dev.chrisbanes.haze.HazeState
+import dev.chrisbanes.haze.haze
+import dev.chrisbanes.haze.hazeChild
+import dev.chrisbanes.haze.materials.ExperimentalHazeMaterialsApi
+import dev.chrisbanes.haze.materials.HazeMaterials
+import org.koin.androidx.compose.koinViewModel
+
+@SuppressLint("UnusedMaterial3ScaffoldPaddingParameter")
+@OptIn(
+    ExperimentalMaterial3Api::class,
+    ExperimentalHazeMaterialsApi::class
+)
+@Composable
+fun ChatMaterialsScreen(
+    onBack: () -> Unit,
+    viewModel: ChatMaterialsViewModel = koinViewModel<ChatMaterialsViewModelImpl>()
+) {
+    val currentTheme = LocalTheme.current
+    val screenState by viewModel.screenState.collectAsStateWithLifecycle()
+    val attachments = screenState.materials
+
+    val imageLoader = LocalContext.current.imageLoader
+
+    var moreClearBlur by rememberSaveable {
+        mutableStateOf(false)
+    }
+
+    val hazeState = remember { HazeState() }
+    val hazeStyle = if (moreClearBlur) HazeMaterials.ultraThin() else HazeMaterials.regular()
+
+    var dropDownMenuExpanded by remember {
+        mutableStateOf(false)
+    }
+    var checkedTypeIndex by rememberSaveable {
+        mutableIntStateOf(0)
+    }
+
+    LaunchedEffect(checkedTypeIndex) {
+        viewModel.onTypeChanged(
+            when (checkedTypeIndex) {
+                0 -> "photo"
+                1 -> "video"
+                2 -> "audio"
+                3 -> "doc"
+                4 -> "link"
+                else -> ""
+            }
+        )
+    }
+
+    val titles = listOf("Photos", "Videos", "Audios", "Files", "Links")
+
+    val listState = rememberLazyListState()
+    val gridState = rememberLazyGridState()
+
+    val canScrollBackward = when (checkedTypeIndex) {
+        in 0..1 -> gridState.canScrollBackward
+        else -> listState.canScrollBackward
+    }
+
+    Log.d("ChatMaterialsScreen", "ChatMaterialsScreen: canScrollBackward: $canScrollBackward")
+
+    val toolbarColorAlpha by animateFloatAsState(
+        targetValue = if (!canScrollBackward) 1f else 0f,
+        label = "toolbarColorAlpha",
+        animationSpec = tween(durationMillis = 50)
+    )
+
+    val toolbarContainerColor by animateColorAsState(
+        targetValue =
+        if (currentTheme.usingBlur || !canScrollBackward)
+            MaterialTheme.colorScheme.surface
+        else
+            MaterialTheme.colorScheme.surfaceColorAtElevation(3.dp),
+        label = "toolbarColorAlpha",
+        animationSpec = tween(durationMillis = 50)
+    )
+
+    val pullToRefreshAlpha by animateFloatAsState(
+        targetValue = if (!canScrollBackward) 1f else 0f,
+        label = "pullToRefreshAlpha",
+        animationSpec = tween(durationMillis = 50)
+    )
+
+    val pullToRefreshState = rememberPullToRefreshState()
+
+    Scaffold(
+        topBar = {
+            TopAppBar(
+                title = {
+                    Text(text = "Chat Materials")
+                },
+                modifier = Modifier
+                    .then(
+                        if (currentTheme.usingBlur) {
+                            Modifier.hazeChild(
+                                state = hazeState,
+                                style = hazeStyle
+                            )
+                        } else Modifier
+                    )
+                    .fillMaxWidth(),
+                colors = TopAppBarDefaults.topAppBarColors(
+                    containerColor = toolbarContainerColor.copy(
+                        alpha = if (currentTheme.usingBlur) toolbarColorAlpha else 1f
+                    )
+                ),
+                navigationIcon = {
+                    IconButton(onClick = onBack) {
+                        Icon(
+                            imageVector = Icons.AutoMirrored.Rounded.ArrowBack,
+                            contentDescription = null
+                        )
+                    }
+                },
+                actions = {
+                    IconButton(
+                        onClick = {
+                            dropDownMenuExpanded = true
+                        }
+                    ) {
+                        Icon(
+                            imageVector = Icons.Outlined.MoreVert,
+                            contentDescription = "Options button"
+                        )
+                    }
+
+                    DropdownMenu(
+                        modifier = Modifier.defaultMinSize(minWidth = 140.dp),
+                        expanded = dropDownMenuExpanded,
+                        onDismissRequest = {
+                            dropDownMenuExpanded = false
+                        },
+                        offset = DpOffset(x = (-4).dp, y = (-60).dp)
+                    ) {
+                        DropdownMenuItem(
+                            onClick = {
+                                viewModel.onRefresh()
+                                dropDownMenuExpanded = false
+                            },
+                            text = {
+                                Text(text = stringResource(id = R.string.action_refresh))
+                            },
+                            leadingIcon = {
+                                Icon(
+                                    imageVector = Icons.Rounded.Refresh,
+                                    contentDescription = null
+                                )
+                            }
+                        )
+
+                        if (currentTheme.usingBlur) {
+                            DropdownMenuItem(
+                                text = {
+                                    Text(text = if (moreClearBlur) "Default blur" else "Clearer blur")
+                                },
+                                onClick = {
+                                    moreClearBlur = !moreClearBlur
+                                    dropDownMenuExpanded = false
+                                }
+                            )
+                        }
+
+                        HorizontalDivider()
+
+                        titles.forEachIndexed { index, title ->
+                            DropdownMenuItem(
+                                leadingIcon = {
+                                    RadioButton(
+                                        selected = checkedTypeIndex == index,
+                                        onClick = null
+                                    )
+                                },
+                                text = {
+                                    Text(text = title)
+                                },
+                                onClick = {
+                                    checkedTypeIndex = index
+                                    dropDownMenuExpanded = false
+                                }
+                            )
+                        }
+
+                    }
+                }
+            )
+        }
+    ) { padding ->
+        Box(
+            modifier = Modifier
+                .fillMaxSize()
+                .padding(start = padding.calculateStartPadding(LayoutDirection.Ltr))
+                .padding(end = padding.calculateEndPadding(LayoutDirection.Ltr))
+                .nestedScroll(pullToRefreshState.nestedScrollConnection)
+        ) {
+            if (checkedTypeIndex in listOf(0, 1)) {
+                LazyVerticalGrid(
+                    columns = GridCells.Fixed(3),
+                    state = gridState,
+                    horizontalArrangement = Arrangement.spacedBy(2.dp),
+                    modifier = Modifier
+                        .then(
+                            if (currentTheme.usingBlur) {
+                                Modifier.haze(
+                                    state = hazeState,
+                                    style = hazeStyle
+                                )
+                            } else {
+                                Modifier
+                            }
+                        )
+                        .fillMaxSize()
+
+                ) {
+                    repeat(3) {
+                        item {
+                            Spacer(modifier = Modifier.height(padding.calculateTopPadding()))
+                        }
+                    }
+                    items(attachments) { item ->
+                        ChatMaterialItem(
+                            item = item,
+                            imageLoader = imageLoader
+                        )
+                    }
+                    repeat(3) {
+                        item {
+                            Spacer(modifier = Modifier.height(padding.calculateBottomPadding()))
+                        }
+                    }
+                }
+            } else {
+                LazyColumn(
+                    state = listState,
+                    modifier = Modifier
+                        .then(
+                            if (currentTheme.usingBlur) {
+                                Modifier.haze(
+                                    state = hazeState,
+                                    style = hazeStyle
+                                )
+                            } else {
+                                Modifier
+                            }
+                        )
+                        .fillMaxSize()
+
+                ) {
+                    item {
+                        Spacer(modifier = Modifier.height(padding.calculateTopPadding()))
+                    }
+                    items(attachments) { item ->
+                        ChatMaterialItem(
+                            item = item,
+                            imageLoader = imageLoader
+                        )
+                    }
+                    item {
+                        Spacer(modifier = Modifier.height(padding.calculateBottomPadding()))
+                    }
+                }
+            }
+
+            if (pullToRefreshState.isRefreshing) {
+                LaunchedEffect(true) {
+                    viewModel.onRefresh()
+                }
+            }
+
+            LaunchedEffect(screenState.isLoading) {
+                if (!screenState.isLoading) {
+                    pullToRefreshState.endRefresh()
+                }
+            }
+
+            PullToRefreshContainer(
+                state = pullToRefreshState,
+                modifier = Modifier
+                    .alpha(pullToRefreshAlpha)
+                    .align(Alignment.TopCenter)
+                    .padding(top = padding.calculateTopPadding()),
+                contentColor = MaterialTheme.colorScheme.primary
+            )
+        }
+    }
+}

feature/chatmaterials/src/main/kotlin/com/meloda/app/fast/chatmaterials/util/ChatMaterialMapper.kt

@@ -0,0 +1,59 @@
+package com.meloda.app.fast.chatmaterials.util
+
+import com.meloda.app.fast.chatmaterials.model.UiChatMaterial
+import com.meloda.app.fast.model.api.data.AttachmentType
+import com.meloda.app.fast.model.api.domain.VkAttachmentHistoryMessage
+import com.meloda.app.fast.model.api.domain.VkAudioDomain
+import com.meloda.app.fast.model.api.domain.VkFileDomain
+import com.meloda.app.fast.model.api.domain.VkLinkDomain
+import com.meloda.app.fast.model.api.domain.VkPhotoDomain
+import com.meloda.app.fast.model.api.domain.VkVideoDomain
+import java.text.SimpleDateFormat
+import java.util.Locale
+
+fun VkAttachmentHistoryMessage.asPresentation(): UiChatMaterial =
+    when (val type = this.attachment.type) {
+        AttachmentType.PHOTO -> {
+            val attachment = this.attachment as VkPhotoDomain
+            UiChatMaterial.Photo(
+                previewUrl = attachment.getSizeOrSmaller(VkPhotoDomain.SIZE_TYPE_1080_1024)?.url.orEmpty()
+            )
+        }
+
+        AttachmentType.VIDEO -> {
+            val attachment = this.attachment as VkVideoDomain
+            UiChatMaterial.Video(
+                previewUrl = attachment.images.firstOrNull()?.url.orEmpty()
+            )
+        }
+
+        AttachmentType.AUDIO -> {
+            val attachment = this.attachment as VkAudioDomain
+            UiChatMaterial.Audio(
+                previewUrl = null,
+                title = attachment.title,
+                artist = attachment.artist,
+                duration = SimpleDateFormat(
+                    "mm:ss",
+                    Locale.getDefault()
+                ).format(attachment.duration)
+            )
+        }
+
+        AttachmentType.FILE -> {
+            val attachment = this.attachment as VkFileDomain
+            UiChatMaterial.File(
+                title = attachment.title
+            )
+        }
+
+        AttachmentType.LINK -> {
+            val attachment = this.attachment as VkLinkDomain
+            UiChatMaterial.Link(
+                title = attachment.title ?: attachment.url,
+                previewUrl = attachment.photo?.getMaxSize()?.url
+            )
+        }
+
+        else -> throw IllegalArgumentException("Unsupported type: $type")
+    }