done

app/build.gradle

@@ -4,7 +4,7 @@ plugins {
 }
 
 android {
-    compileSdk 34
+    compileSdk 35
     namespace "otus.gpb.recyclerview"
 
     defaultConfig {
@@ -30,14 +30,18 @@ android {
     kotlinOptions {
         jvmTarget = '1.8'
     }
+    buildFeatures {
+        viewBinding = true
+    }
 }
 
 dependencies {
-
+    implementation('com.github.bumptech.glide:glide:4.16.0')
     implementation 'androidx.core:core-ktx:1.7.0'
     implementation 'androidx.appcompat:appcompat:1.5.1'
     implementation 'com.google.android.material:material:1.7.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    implementation 'androidx.compose.ui:ui-graphics-android:1.8.3'
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.1.3'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'

app/src/main/AndroidManifest.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
-
+    <uses-permission android:name="android.permission.INTERNET" />
     <application
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"

app/src/main/java/otus/gpb/recyclerview/MainActivity.kt

@@ -1,12 +1,56 @@
 package otus.gpb.recyclerview
 
-import androidx.appcompat.app.AppCompatActivity
 import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import androidx.recyclerview.widget.ItemTouchHelper
+import androidx.recyclerview.widget.LinearLayoutManager
+import otus.gpb.recyclerview.data.ChatItem
+import otus.gpb.recyclerview.data.groupChats
+import otus.gpb.recyclerview.data.userChats
+import otus.gpb.recyclerview.databinding.ActivityMainBinding
+import otus.gpb.recyclerview.ui.ChatAdapter
+import otus.gpb.recyclerview.ui.CustomDecorator
+import otus.gpb.recyclerview.ui.SwipeToDeleteCallback
 
 class MainActivity : AppCompatActivity() {
 
+    private var chatItems: MutableList<ChatItem> =
+        (groupChats.map { ChatItem.Group(it) } +
+                userChats.map { ChatItem.User(it) }).toMutableList()
+
+    private lateinit var binding: ActivityMainBinding
+    private lateinit var adapter: ChatAdapter
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_main)
+
+        binding = ActivityMainBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+
+        binding.recyclerView.addItemDecoration(CustomDecorator(this).apply {
+            setColor(R.color.color_chat_divider_light)
+            setOffset(R.integer.dividerOffset)
+        })
+
+        binding.recyclerView.layoutManager = LinearLayoutManager(this)
+        adapter = ChatAdapter() { id ->
+            println(id)
+        }
+
+        binding.recyclerView.adapter = adapter
+
+        adapter.submitList(chatItems.toList())
+
+        val itemTouchHelper = ItemTouchHelper(
+            SwipeToDeleteCallback ({ position -> removeItem(position)}, this)
+        )
+        itemTouchHelper.attachToRecyclerView(binding.recyclerView)
+
     }
+
+    private fun removeItem(position: Int) {
+        chatItems.removeAt(position)
+        adapter.submitList(chatItems.toList())
+    }
+
 }

app/src/main/java/otus/gpb/recyclerview/data/ChatItem.kt

@@ -0,0 +1,6 @@
+package otus.gpb.recyclerview.data
+
+sealed class ChatItem() {
+    data class Group(val chat: GroupChat) : ChatItem()
+    data class User(val chat: UserChat) : ChatItem()
+}

app/src/main/java/otus/gpb/recyclerview/data/GroupChat.kt

@@ -0,0 +1,81 @@
+package otus.gpb.recyclerview.data
+
+data class GroupChat(
+    val id: Int,
+    val groupName: String,
+    val lastUsername: String,
+    val lastMessage: String,
+    val avatarUrl: String,
+    val lastUserUrl: String,
+    var isVerified: Boolean,
+    var isMuted: Boolean,
+    var isRead: Boolean,
+    var isVoip: Boolean,
+    var counterMessages: Int,
+    var isMentioned: Boolean,
+    val messageTime: String
+)
+
+
+val groupChats = listOf(
+    GroupChat(
+        id = 1,
+        groupName = "Labubu fans",
+        lastUsername = "Teodor",
+        lastMessage = "Hi, how are you?",
+        avatarUrl = "https://media.geeksforgeeks.org/wp-content/uploads/20210101144014/gfglogo.png",
+        lastUserUrl = "https://upload.wikimedia.org/wikipedia/commons/thumb/9/95/Moscow_%288351271825%29.jpg/500px-Moscow_%288351271825%29.jpg",
+        isVerified = false,
+        isMuted = false,
+        isRead = true,
+        isVoip = false,
+        counterMessages = 0,
+        isMentioned = false,
+        messageTime = "06.07.2025 10:00",
+    ),
+    GroupChat(
+        id = 2,
+        groupName = "Top Gear",
+        lastUsername = "Patrick",
+        lastMessage = "Yes, I know this, but what you want to do?",
+        avatarUrl = "https://media.geeksforgeeks.org/wp-content/uploads/20210101144014/gfglogo.png",
+        lastUserUrl = "https://upload.wikimedia.org/wikipedia/commons/thumb/9/95/Moscow_%288351271825%29.jpg/500px-Moscow_%288351271825%29.jpg",
+        isVerified = false,
+        isMuted = false,
+        isRead = true,
+        isVoip = false,
+        counterMessages = 0,
+        isMentioned = false,
+        messageTime = "10.06.2025 15:23",
+    ),
+    GroupChat(
+        id = 3,
+        groupName = "Karena Makarena",
+        lastUsername = "Tereza",
+        lastMessage = "Whaaaaaaat??",
+        avatarUrl = "https://i.imgur.com/DvpvklR.png",
+        lastUserUrl = "https://upload.wikimedia.org/wikipedia/commons/thumb/9/95/Moscow_%288351271825%29.jpg/500px-Moscow_%288351271825%29.jpg",
+        isVerified = false,
+        isMuted = false,
+        isRead = false,
+        isVoip = true,
+        counterMessages = 3,
+        isMentioned = false,
+        messageTime = "06.07.2025 10:00",
+    ),
+    GroupChat(
+        id = 4,
+        groupName = "Eric Davidich",
+        lastUsername = "Magomed",
+        lastMessage = "Shaize",
+        avatarUrl = "https://i.imgur.com/DvpvklR.png",
+        lastUserUrl = "https://upload.wikimedia.org/wikipedia/commons/thumb/9/95/Moscow_%288351271825%29.jpg/500px-Moscow_%288351271825%29.jpg",
+        isVerified = false,
+        isMuted = true,
+        isRead = false,
+        isVoip = false,
+        counterMessages = 69,
+        isMentioned = true,
+        messageTime = "05.07.2025 17:56",
+    ),
+)

app/src/main/java/otus/gpb/recyclerview/data/UserChat.kt

@@ -0,0 +1,57 @@
+package otus.gpb.recyclerview.data
+
+data class UserChat(
+    val id: Int,
+    val username: String,
+    val lastMessage: String,
+    val avatarUrl: String,
+    var isVerified: Boolean,
+    var isMuted: Boolean,
+    var isRead: Boolean,
+    var isScam: Boolean,
+    var isOnline: Boolean,
+    var counterMessages: Int,
+    val messageTime: String
+)
+
+val userChats = listOf(
+    UserChat(
+        id = 1,
+        username = "Павел Дуров",
+        lastMessage = "Пойдём сегодня на футбол?",
+        avatarUrl = "https://upload.wikimedia.org/wikipedia/commons/3/33/Espaguetis_carbonara.jpg",
+        isVerified = true,
+        isMuted = false,
+        isRead = false,
+        isScam = false,
+        isOnline = true,
+        counterMessages = 1,
+        messageTime = "06.07.2025 13:05"
+    ),
+    UserChat(
+        id = 2,
+        username = "Бадави",
+        lastMessage = "Сроооочно зайди да",
+        avatarUrl = "https://upload.wikimedia.org/wikipedia/commons/3/33/Espaguetis_carbonara.jpg",
+        isVerified = false,
+        isMuted = true,
+        isRead = false,
+        isScam = false,
+        isOnline = false,
+        counterMessages = 10,
+        messageTime = "02.07.2025 13:46"
+    ),
+    UserChat(
+        id = 3,
+        username = "Олег Тинькофф",
+        lastMessage = "Скинь 3 цифры на обороте карты",
+        avatarUrl = "https://upload.wikimedia.org/wikipedia/commons/3/33/Espaguetis_carbonara.jpg",
+        isVerified = false,
+        isMuted = false,
+        isRead = false,
+        isScam = true,
+        isOnline = true,
+        counterMessages = 5,
+        messageTime = "25.01.2024 16:18"
+    ),
+)

app/src/main/java/otus/gpb/recyclerview/ui/ChatAdapter.kt

@@ -0,0 +1,101 @@
+package otus.gpb.recyclerview.ui
+
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.recyclerview.widget.ListAdapter
+import androidx.recyclerview.widget.RecyclerView
+import com.bumptech.glide.Glide
+import otus.gpb.recyclerview.data.ChatItem
+import otus.gpb.recyclerview.databinding.ItemGroupChatBinding
+import otus.gpb.recyclerview.databinding.ItemUserChatBinding
+import java.util.Locale
+
+class ChatAdapter(private val onItemClick: (Int) -> Unit):
+    ListAdapter<ChatItem,RecyclerView.ViewHolder>(ChatDiffCallback()) {
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
+        val inflater = LayoutInflater.from(parent.context)
+
+        return when(viewType){
+            VIEW_TYPE_GROUP -> {
+                val binding = ItemGroupChatBinding.inflate(inflater, parent, false)
+                GroupChatViewHolder(binding)
+            }
+            VIEW_TYPE_USER -> {
+                val binding = ItemUserChatBinding.inflate(inflater, parent, false)
+                UserChatViewHolder(binding)
+            }
+            else -> throw RuntimeException("RuntimeException")
+        }
+    }
+
+    override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
+        when (val item = getItem(position)) {
+            is ChatItem.Group -> (holder as GroupChatViewHolder).bind(item)
+            is ChatItem.User -> (holder as UserChatViewHolder).bind(item)
+        }
+    }
+
+    override fun getItemViewType(position: Int): Int {
+        return when (getItem(position)){
+            is ChatItem.Group -> VIEW_TYPE_GROUP
+            is ChatItem.User -> VIEW_TYPE_USER
+        }
+    }
+
+    inner class GroupChatViewHolder(private val binding: ItemGroupChatBinding) : RecyclerView.ViewHolder(binding.root) {
+        fun bind(item: ChatItem.Group) {
+            binding.groupName.text = item.chat.groupName
+            binding.lastUsername.text = item.chat.lastUsername
+            Glide.with(binding.root.context)
+                .load(item.chat.avatarUrl)
+                .centerCrop()
+                .into(binding.avatarUrl)
+            binding.lastMessage.text = item.chat.lastMessage
+            binding.verification.visibility = if (item.chat.isVerified) View.VISIBLE else View.GONE
+            binding.mute.visibility = if (item.chat.isMuted){
+                binding.badge.isActivated = true
+                View.VISIBLE
+            } else {
+                binding.badge.isActivated = false
+                View.GONE
+            }
+            binding.voip.visibility = if (item.chat.isVoip) View.VISIBLE else View.GONE
+
+            binding.badge.visibility = if (item.chat.isMentioned) View.VISIBLE else View.GONE
+            binding.badge.text = String.format(Locale("ru", "RU"), "%d", item.chat.counterMessages)
+            binding.messageTime.text = item.chat.messageTime
+            binding.root.setOnClickListener { onItemClick(item.chat.id) }
+        }
+    }
+
+    inner class UserChatViewHolder(private val binding: ItemUserChatBinding) : RecyclerView.ViewHolder(binding.root) {
+        fun bind(item: ChatItem.User) {
+            binding.usernameField.text = item.chat.username
+            Glide.with(binding.root.context)
+                .load(item.chat.avatarUrl)
+                .centerCrop()
+                .into(binding.avatarUrl)
+            binding.lastMessage.text = item.chat.lastMessage
+            binding.verification.visibility = if (item.chat.isVerified) View.VISIBLE else View.GONE
+            binding.mute.visibility = if (item.chat.isMuted){
+                binding.badge.isActivated = true
+                View.VISIBLE
+            } else {
+                binding.badge.isActivated = false
+                View.GONE
+            }
+            binding.scam.visibility = if (item.chat.isScam) View.VISIBLE else View.GONE
+            binding.badge.visibility = if (item.chat.counterMessages>0) View.VISIBLE else View.GONE
+            binding.badge.text = String.format(Locale("ru", "RU"), "%d", item.chat.counterMessages)
+            binding.messageTime.text = item.chat.messageTime
+            binding.root.setOnClickListener { onItemClick(item.chat.id) }
+        }
+    }
+
+    companion object{
+        private const val VIEW_TYPE_GROUP = 1
+        private const val VIEW_TYPE_USER = 2
+    }
+}

app/src/main/java/otus/gpb/recyclerview/ui/ChatDiffCallback.kt

@@ -0,0 +1,19 @@
+package otus.gpb.recyclerview.ui
+
+import androidx.recyclerview.widget.DiffUtil
+import otus.gpb.recyclerview.data.ChatItem
+
+class ChatDiffCallback : DiffUtil.ItemCallback<ChatItem>() {
+
+    override fun areContentsTheSame(oldItem: ChatItem, newItem: ChatItem): Boolean {
+        return oldItem == newItem
+    }
+
+    override fun areItemsTheSame(oldItem: ChatItem, newItem: ChatItem): Boolean {
+        return when{
+            oldItem is ChatItem.Group && newItem is ChatItem.Group -> oldItem.chat.id == newItem.chat.id
+            oldItem is ChatItem.User && newItem is ChatItem.User -> oldItem.chat.id == newItem.chat.id
+            else -> false
+        }
+    }
+}