Merge branch 'master' into 9.3.0

CHANGELOG.md

@@ -4,6 +4,18 @@
 
 This release become possible thanks to [Anton Lakotka](https://youtrack.jetbrains.com/users/anton.lakotka)
 
+## 9.2.2
+
+* `Core`:
+  * Fix of [#793](https://github.com/InsanusMokrassar/ktgbotapi/issues/793): Add `PreviewChat`
+
+## 9.2.1
+
+* `Version`:
+  * `Ktor`: `2.3.3` -> `2.3.4`
+* `Core`:
+  * All `ChatMember` inheritors have fixes `status` field
+
 ## 9.2.0
 
 **Add support of [Telegram Bots API 6.9](https://core.telegram.org/bots/api-changelog#september-22-2023)**

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/abstracts/WithChat.kt

@@ -1,10 +1,17 @@
 package dev.inmo.tgbotapi.abstracts
 
 import dev.inmo.tgbotapi.types.chat.Chat
+import dev.inmo.tgbotapi.types.chat.PreviewChat
 
 /**
  * All inheritors of this interface have [chat] field and related to this [chat]
  */
-interface WithChat {
+interface WithPreviewChat {
-    val chat: Chat
+    val chat: PreviewChat
 }
+
+/**
+ * All inheritors of this interface have [chat] field and related to this [chat]
+ */
+@Deprecated("Renamed", ReplaceWith("WithPreviewChat", "dev.inmo.tgbotapi.abstracts.WithPreviewChat"))
+typealias WithChat = WithPreviewChat

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/Abstracts.kt

@@ -4,51 +4,51 @@ import dev.inmo.tgbotapi.utils.internal.ClassCastsIncluded
 import dev.inmo.tgbotapi.types.*
 import kotlinx.serialization.Serializable
 
-@Serializable(PreviewChatSerializer::class)
+@Serializable(ChatSerializer::class)
 sealed interface UsernameChat : Chat {
     val username: Username?
 }
 
-@Serializable(PreviewChatSerializer::class)
+@Serializable(ChatSerializer::class)
 sealed interface PrivateChat : Chat, UsernameChat {
     override val id: UserId
     val firstName: String
     val lastName: String
 }
 
-@Serializable(PreviewChatSerializer::class)
+@Serializable(ChatSerializer::class)
 sealed interface PublicChat : Chat {
     val title: String
 }
 
-@Serializable(PreviewChatSerializer::class)
+@Serializable(ChatSerializer::class)
 sealed interface SuperPublicChat : PublicChat, UsernameChat
 
-@Serializable(PreviewChatSerializer::class)
+@Serializable(ChatSerializer::class)
 sealed interface ChannelChat : SuperPublicChat {
     override val id: ChatId
 }
 
-@Serializable(PreviewChatSerializer::class)
+@Serializable(ChatSerializer::class)
 sealed interface GroupChat : PublicChat
 
-@Serializable(PreviewChatSerializer::class)
+@Serializable(ChatSerializer::class)
 sealed interface SupergroupChat : GroupChat, SuperPublicChat
 
-@Serializable(PreviewChatSerializer::class)
+@Serializable(ChatSerializer::class)
 sealed interface ForumChat : SupergroupChat
 
-@Serializable(PreviewChatSerializer::class)
+@Serializable(ChatSerializer::class)
 sealed interface PossiblyPremiumChat : Chat {
     val isPremium: Boolean
 }
 
-@Serializable(PreviewChatSerializer::class)
+@Serializable(ChatSerializer::class)
 sealed interface AbleToAddInAttachmentMenuChat : Chat {
     val addedToAttachmentMenu: Boolean
 }
 
-@Serializable(PreviewChatSerializer::class)
+@Serializable(ChatSerializer::class)
 @ClassCastsIncluded(excludeRegex = ".*Impl")
 sealed interface Chat {
     val id: IdChatIdentifier

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/ChatSerializers.kt

@@ -49,13 +49,54 @@ object ChatTypeSerializer : KSerializer<ChatType> {
 }
 
 @RiskFeature
-object PreviewChatSerializer : KSerializer<Chat> {
+object ChatSerializer : KSerializer<Chat> {
     @OptIn(InternalSerializationApi::class)
     override val descriptor: SerialDescriptor = buildSerialDescriptor("PreviewChatSerializer", PolymorphicKind.OPEN)
 
     override fun deserialize(decoder: Decoder): Chat {
         val decodedJson = JsonObject.serializer().deserialize(decoder)
 
+        return try {
+            formatter.decodeFromJsonElement(ExtendedChatSerializer, decodedJson)
+        } catch (e: SerializationException) {
+            val type = decodedJson[typeField] ?.jsonPrimitive ?.content ?.asChatType ?: error("Field $typeField must be presented, but absent in $decodedJson")
+            val isForum = decodedJson[isForumField] ?.jsonPrimitive ?.booleanOrNull == true
+
+            when (type) {
+                ChatType.PrivateChatType -> formatter.decodeFromJsonElement(PrivateChatImpl.serializer(), decodedJson)
+                ChatType.GroupChatType -> formatter.decodeFromJsonElement(GroupChatImpl.serializer(), decodedJson)
+                ChatType.SupergroupChatType -> if (isForum) {
+                    formatter.decodeFromJsonElement(ForumChatImpl.serializer(), decodedJson)
+                } else {
+                    formatter.decodeFromJsonElement(SupergroupChatImpl.serializer(), decodedJson)
+                }
+                ChatType.ChannelChatType -> formatter.decodeFromJsonElement(ChannelChatImpl.serializer(), decodedJson)
+                is ChatType.UnknownChatType -> UnknownChatType(
+                    formatter.decodeFromJsonElement(Long.serializer(), decodedJson[chatIdField] ?: JsonPrimitive(-1)).toChatId(),
+                    decodedJson.toString(),
+                    decodedJson
+                )
+            }
+        }
+    }
+
+    override fun serialize(encoder: Encoder, value: Chat) {
+        when (value) {
+            is ExtendedChat -> ExtendedChatSerializer.serialize(encoder, value)
+            is PreviewChat -> PreviewChatSerializer.serialize(encoder, value)
+            is ExtendedBot -> ExtendedBot.serializer().serialize(encoder, value)
+        }
+    }
+}
+
+@RiskFeature
+object PreviewChatSerializer : KSerializer<PreviewChat> {
+    @OptIn(InternalSerializationApi::class)
+    override val descriptor: SerialDescriptor = buildSerialDescriptor("PreviewChatSerializer", PolymorphicKind.OPEN)
+
+    override fun deserialize(decoder: Decoder): PreviewChat {
+        val decodedJson = JsonObject.serializer().deserialize(decoder)
+
         val type = decodedJson[typeField] ?.jsonPrimitive ?.content ?.asChatType ?: error("Field $typeField must be presented, but absent in $decodedJson")
         val isForum = decodedJson[isForumField] ?.jsonPrimitive ?.booleanOrNull == true
 
@@ -76,16 +117,14 @@ object PreviewChatSerializer : KSerializer<Chat> {
         }
     }
 
-    override fun serialize(encoder: Encoder, value: Chat) {
+    override fun serialize(encoder: Encoder, value: PreviewChat) {
         when (value) {
-            is ExtendedChat -> ExtendedChatSerializer.serialize(encoder, value)
             is PrivateChatImpl -> PrivateChatImpl.serializer().serialize(encoder, value)
             is GroupChatImpl -> GroupChatImpl.serializer().serialize(encoder, value)
             is SupergroupChatImpl -> SupergroupChatImpl.serializer().serialize(encoder, value)
             is ForumChatImpl -> ForumChatImpl.serializer().serialize(encoder, value)
             is ChannelChatImpl -> ChannelChatImpl.serializer().serialize(encoder, value)
             is CommonBot -> CommonBot.serializer().serialize(encoder, value)
-            is ExtendedBot -> ExtendedBot.serializer().serialize(encoder, value)
             is CommonUser -> CommonUser.serializer().serialize(encoder, value)
             is UnknownChatType -> JsonObject.serializer().serialize(encoder, value.rawJson)
         }
@@ -128,6 +167,7 @@ sealed class ExtendedChatSerializer : KSerializer<ExtendedChat> {
             is ExtendedSupergroupChatImpl -> ExtendedSupergroupChatImpl.serializer().serialize(encoder, value)
             is ExtendedForumChatImpl -> ExtendedForumChatImpl.serializer().serialize(encoder, value)
             is ExtendedChannelChatImpl -> ExtendedChannelChatImpl.serializer().serialize(encoder, value)
+            is ExtendedBot -> ExtendedBot.serializer().serialize(encoder, value)
             is UnknownExtendedChat -> JsonObject.serializer().serialize(encoder, value.rawJson)
         }
     }

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/Extended.kt

@@ -184,8 +184,10 @@ data class ExtendedBot(
     @SerialName(canReadAllGroupMessagesField)
     val canReadAllGroupMessages: Boolean = false,
     @SerialName(supportInlineQueriesField)
-    val supportsInlineQueries: Boolean = false
+    val supportsInlineQueries: Boolean = false,
-) : Bot() {
+    @SerialName(photoField)
+    override val chatPhoto: ChatPhoto? = null
+) : Bot(), ExtendedChat {
     @SerialName(isBotField)
     private val isBot = true
 }

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/Impls.kt

@@ -15,7 +15,7 @@ data class GroupChatImpl(
     override val id: ChatId,
     @SerialName(titleField)
     override val title: String
-) : GroupChat
+) : PreviewGroupChat
 
 @Serializable
 @RiskFeature("This class is a subject of changes. It is better to use PrivateChat due")
@@ -28,7 +28,7 @@ data class PrivateChatImpl(
     override val firstName: String = "",
     @SerialName(lastNameField)
     override val lastName: String = ""
-) : PrivateChat
+) : PreviewPrivateChat
 
 @Serializable
 @RiskFeature("This class is a subject of changes. It is better to use SupergroupChat due")
@@ -39,7 +39,7 @@ data class SupergroupChatImpl(
     override val title: String,
     @SerialName(usernameField)
     override val username: Username? = null
-) : SupergroupChat
+) : PreviewSupergroupChat
 
 @Serializable
 @RiskFeature("This class is a subject of changes. It is better to use ForumChat due")
@@ -50,7 +50,7 @@ data class ForumChatImpl(
     override val title: String,
     @SerialName(usernameField)
     override val username: Username? = null
-) : ForumChat
+) : PreviewForumChat
 
 @Serializable
 @RiskFeature("This class is a subject of changes. It is better to use ChannelChat due")
@@ -61,14 +61,20 @@ data class ChannelChatImpl(
     override val title: String,
     @SerialName(usernameField)
     override val username: Username? = null
-) : ChannelChat
+) : PreviewChannelChat
 
 @Serializable(UserSerializer::class)
 sealed class User : PrivateChat
 
+@Serializable(UserSerializer::class)
+sealed class PreviewUser : PreviewPrivateChat, User()
+
 @Serializable(UserSerializer::class)
 sealed class Bot : User()
 
+@Serializable(UserSerializer::class)
+sealed class PreviewBot : PreviewUser()
+
 @Serializable
 data class CommonBot(
     override val id: UserId,
@@ -78,7 +84,7 @@ data class CommonBot(
     override val lastName: String = "",
     @SerialName(usernameField)
     override val username: Username? = null,
-) : Bot() {
+) : PreviewBot() {
     @SerialName(isBotField)
     private val isBot = true
 }
@@ -99,7 +105,7 @@ data class CommonUser(
     override val isPremium: Boolean = false,
     @SerialName(addedToAttachmentMenuField)
     override val addedToAttachmentMenu: Boolean = false
-) : User(), WithOptionalLanguageCode, PossiblyPremiumChat, AbleToAddInAttachmentMenuChat {
+) : PreviewUser(), WithOptionalLanguageCode, PossiblyPremiumChat, AbleToAddInAttachmentMenuChat {
     constructor(
         id: UserId,
         firstName: String,

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/PreviewAbstracts.kt

@@ -0,0 +1,30 @@
+package dev.inmo.tgbotapi.types.chat
+
+import kotlinx.serialization.Serializable
+
+@Serializable(PreviewChatSerializer::class)
+sealed interface PreviewChat : Chat
+
+@Serializable(PreviewChatSerializer::class)
+sealed interface PreviewUsernameChat : PreviewChat, UsernameChat
+
+@Serializable(PreviewChatSerializer::class)
+sealed interface PreviewPrivateChat : PreviewUsernameChat, PrivateChat
+
+@Serializable(PreviewChatSerializer::class)
+sealed interface PreviewPublicChat : PreviewChat, PublicChat
+
+@Serializable(PreviewChatSerializer::class)
+sealed interface PreviewSuperPublicChat : PreviewPublicChat, PreviewUsernameChat, SuperPublicChat
+
+@Serializable(PreviewChatSerializer::class)
+sealed interface PreviewChannelChat : PreviewSuperPublicChat, ChannelChat
+
+@Serializable(PreviewChatSerializer::class)
+sealed interface PreviewGroupChat : PreviewPublicChat, GroupChat
+
+@Serializable(PreviewChatSerializer::class)
+sealed interface PreviewSupergroupChat : PreviewGroupChat, PreviewSuperPublicChat, SupergroupChat
+
+@Serializable(PreviewChatSerializer::class)
+sealed interface PreviewForumChat : PreviewSupergroupChat, ForumChat

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/UnknownChatType.kt

@@ -7,4 +7,4 @@ data class UnknownChatType(
     override val id: IdChatIdentifier,
     val raw: String,
     val rawJson: JsonObject
-) : Chat
+) : Chat, PreviewChat

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/member/AdministratorChatMemberImpl.kt

@@ -45,6 +45,5 @@ data class AdministratorChatMemberImpl(
 ) : AdministratorChatMember {
     @SerialName(statusField)
     @Required
-    override val status: ChatMember.Status
+    override val status: ChatMember.Status = ChatMember.Status.Administrator
-        get() = ChatMember.Status.Administrator
 }

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/member/ChatMember.kt

@@ -7,6 +7,7 @@ import dev.inmo.tgbotapi.utils.nonstrictJsonFormat
 import kotlinx.serialization.DeserializationStrategy
 import kotlinx.serialization.KSerializer
 import kotlinx.serialization.Serializable
+import kotlinx.serialization.builtins.serializer
 import kotlinx.serialization.descriptors.SerialDescriptor
 import kotlinx.serialization.encoding.Decoder
 import kotlinx.serialization.encoding.Encoder
@@ -15,8 +16,11 @@ import kotlinx.serialization.json.jsonPrimitive
 
 @Serializable(ChatMemberSerializer::class)
 sealed interface ChatMember : WithUser {
-    @Serializable
+    @Serializable(StatusSerializer::class)
-    enum class Status(val status: String, val deserializationStrategy: DeserializationStrategy<ChatMember>) {
+    enum class Status(
+        val status: String,
+        val deserializationStrategy: DeserializationStrategy<ChatMember>
+    ) {
         Creator("creator", OwnerChatMember.serializer()),
         Administrator("administrator", AdministratorChatMemberImpl.serializer()),
         Member("member", MemberChatMemberImpl.serializer()),
@@ -24,6 +28,23 @@ sealed interface ChatMember : WithUser {
         Left("left", LeftChatMemberImpl.serializer()),
         Kicked("kicked", KickedChatMember.serializer())
     }
+
+    object StatusSerializer : KSerializer<Status> {
+        override val descriptor: SerialDescriptor
+            get() = String.serializer().descriptor
+
+        override fun deserialize(decoder: Decoder): Status {
+            val status = decoder.decodeString()
+            return Status.values().first {
+                it.status == status
+            }
+        }
+
+        override fun serialize(encoder: Encoder, value: Status) {
+            encoder.encodeString(value.status)
+        }
+    }
+
     val status: Status
 }
 

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/member/ChatMemberUpdated.kt

@@ -1,9 +1,10 @@
 package dev.inmo.tgbotapi.types.chat.member
 
-import dev.inmo.tgbotapi.abstracts.WithChat
+import dev.inmo.tgbotapi.abstracts.WithPreviewChat
 import dev.inmo.tgbotapi.abstracts.WithUser
 import dev.inmo.tgbotapi.types.*
 import dev.inmo.tgbotapi.types.chat.Chat
+import dev.inmo.tgbotapi.types.chat.PreviewChat
 import dev.inmo.tgbotapi.types.chat.User
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
@@ -11,7 +12,7 @@ import kotlinx.serialization.Serializable
 @Serializable
 data class ChatMemberUpdated(
     @SerialName(chatField)
-    override val chat: Chat,
+    override val chat: PreviewChat,
     @SerialName(fromField)
     override val user: User,
     @SerialName(dateField)
@@ -24,4 +25,4 @@ data class ChatMemberUpdated(
     val inviteLink: ChatInviteLink? = null,
     @SerialName(viaChatFolderInviteLinkField)
     val viaChatFolderInviteLink: Boolean? = false
-) : WithChat, WithUser
+) : WithPreviewChat, WithUser

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/member/KickedChatMember.kt

@@ -13,6 +13,5 @@ data class KickedChatMember(
 ) : BannedChatMember {
     @SerialName(statusField)
     @Required
-    override val status: ChatMember.Status
+    override val status: ChatMember.Status = ChatMember.Status.Kicked
-        get() = ChatMember.Status.Kicked
 }

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/member/LeftChatMemberImpl.kt

@@ -11,6 +11,5 @@ data class LeftChatMemberImpl(
 ) : LeftChatMember {
     @SerialName(statusField)
     @Required
-    override val status: ChatMember.Status
+    override val status: ChatMember.Status = ChatMember.Status.Left
-        get() = ChatMember.Status.Left
 }

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/member/MemberChatMemberImpl.kt

@@ -11,6 +11,5 @@ data class MemberChatMemberImpl(
 ) : MemberChatMember {
     @SerialName(statusField)
     @Required
-    override val status: ChatMember.Status
+    override val status: ChatMember.Status = ChatMember.Status.Member
-        get() = ChatMember.Status.Member
 }

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/member/OwnerChatMember.kt

@@ -45,6 +45,5 @@ data class OwnerChatMember(
 
     @SerialName(statusField)
     @Required
-    override val status: ChatMember.Status
+    override val status: ChatMember.Status = ChatMember.Status.Creator
-        get() = ChatMember.Status.Creator
 }

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/member/RestrictedChatMember.kt

@@ -44,6 +44,5 @@ data class RestrictedChatMember(
 ) : BannedChatMember, SpecialRightsChatMember, ChatPermissions {
     @SerialName(statusField)
     @Required
-    override val status: ChatMember.Status
+    override val status: ChatMember.Status = ChatMember.Status.Restricted
-        get() = ChatMember.Status.Restricted
 }

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/message/ChannelContentMessageImpl.kt

@@ -5,12 +5,13 @@ import dev.inmo.tgbotapi.types.*
 import dev.inmo.tgbotapi.types.buttons.InlineKeyboardMarkup
 import dev.inmo.tgbotapi.types.chat.ChannelChat
 import dev.inmo.tgbotapi.types.chat.CommonBot
+import dev.inmo.tgbotapi.types.chat.PreviewChannelChat
 import dev.inmo.tgbotapi.types.message.abstracts.*
 import dev.inmo.tgbotapi.types.message.content.MessageContent
 
 data class ChannelContentMessageImpl<T: MessageContent>(
     override val messageId: MessageId,
-    override val chat: ChannelChat,
+    override val chat: PreviewChannelChat,
     override val content: T,
     override val date: DateTime,
     override val editDate: DateTime?,

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/message/ChannelEventMessage.kt

@@ -3,12 +3,13 @@ package dev.inmo.tgbotapi.types.message
 import korlibs.time.DateTime
 import dev.inmo.tgbotapi.types.MessageId
 import dev.inmo.tgbotapi.types.chat.ChannelChat
+import dev.inmo.tgbotapi.types.chat.PreviewChannelChat
 import dev.inmo.tgbotapi.types.message.ChatEvents.abstracts.ChannelEvent
 import dev.inmo.tgbotapi.types.message.abstracts.ChatEventMessage
 
 data class ChannelEventMessage<T : ChannelEvent>(
     override val messageId: MessageId,
-    override val chat: ChannelChat,
+    override val chat: PreviewChannelChat,
     override val chatEvent: T,
     override val date: DateTime
 ) : ChatEventMessage<T>

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/message/CommonGroupEventMessage.kt

@@ -4,13 +4,14 @@ import korlibs.time.DateTime
 import dev.inmo.tgbotapi.types.MessageId
 import dev.inmo.tgbotapi.types.chat.User
 import dev.inmo.tgbotapi.types.chat.GroupChat
+import dev.inmo.tgbotapi.types.chat.PreviewGroupChat
 import dev.inmo.tgbotapi.types.message.ChatEvents.abstracts.GroupEvent
 import dev.inmo.tgbotapi.types.message.abstracts.GroupEventMessage
 
 data class CommonGroupEventMessage<T : GroupEvent>(
     override val messageId: MessageId,
     override val from: User,
-    override val chat: GroupChat,
+    override val chat: PreviewGroupChat,
     override val chatEvent: T,
     override val date: DateTime
 ) : GroupEventMessage<T>

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/message/CommonSupergroupEventMessage.kt

@@ -2,6 +2,7 @@ package dev.inmo.tgbotapi.types.message
 
 import korlibs.time.DateTime
 import dev.inmo.tgbotapi.types.MessageId
+import dev.inmo.tgbotapi.types.chat.PreviewSupergroupChat
 import dev.inmo.tgbotapi.types.chat.User
 import dev.inmo.tgbotapi.types.chat.SupergroupChat
 import dev.inmo.tgbotapi.types.message.ChatEvents.abstracts.SupergroupEvent
@@ -10,7 +11,7 @@ import dev.inmo.tgbotapi.types.message.abstracts.SupergroupEventMessage
 data class CommonSupergroupEventMessage<T : SupergroupEvent>(
     override val messageId: MessageId,
     override val from: User,
-    override val chat: SupergroupChat,
+    override val chat: PreviewSupergroupChat,
     override val chatEvent: T,
     override val date: DateTime
 ) : SupergroupEventMessage<T>

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/message/GroupMessages.kt

@@ -10,8 +10,8 @@ import dev.inmo.tgbotapi.types.message.abstracts.*
 import dev.inmo.tgbotapi.types.message.content.MessageContent
 
 data class ConnectedFromChannelGroupContentMessageImpl<T : MessageContent>(
-    override val chat: GroupChat,
+    override val chat: PreviewGroupChat,
-    override val channel: ChannelChat,
+    override val channel: PreviewChannelChat,
     override val messageId: MessageId,
     override val date: DateTime,
     override val forwardInfo: ForwardInfo?,
@@ -26,8 +26,8 @@ data class ConnectedFromChannelGroupContentMessageImpl<T : MessageContent>(
 ) : ConnectedFromChannelGroupContentMessage<T>
 
 data class UnconnectedFromChannelGroupContentMessageImpl<T: MessageContent>(
-    override val chat: GroupChat,
+    override val chat: PreviewGroupChat,
-    override val channel: ChannelChat,
+    override val channel: PreviewChannelChat,
     override val messageId: MessageId,
     override val date: DateTime,
     override val forwardInfo: ForwardInfo?,
@@ -42,7 +42,7 @@ data class UnconnectedFromChannelGroupContentMessageImpl<T: MessageContent>(
 ) : UnconnectedFromChannelGroupContentMessage<T>
 
 data class AnonymousGroupContentMessageImpl<T : MessageContent>(
-    override val chat: GroupChat,
+    override val chat: PreviewGroupChat,
     override val messageId: MessageId,
     override val date: DateTime,
     override val forwardInfo: ForwardInfo?,
@@ -57,7 +57,7 @@ data class AnonymousGroupContentMessageImpl<T : MessageContent>(
 ) : AnonymousGroupContentMessage<T>
 
 data class CommonGroupContentMessageImpl<T : MessageContent>(
-    override val chat: GroupChat,
+    override val chat: PreviewGroupChat,
     override val messageId: MessageId,
     override val from: User,
     override val date: DateTime,
@@ -72,8 +72,8 @@ data class CommonGroupContentMessageImpl<T : MessageContent>(
 ) : CommonGroupContentMessage<T>
 
 data class FromChannelForumContentMessageImpl<T: MessageContent>(
-    override val chat: ForumChat,
+    override val chat: PreviewForumChat,
-    override val channel: ChannelChat,
+    override val channel: PreviewChannelChat,
     override val messageId: MessageId,
     override val threadId: MessageThreadId,
     override val date: DateTime,
@@ -89,7 +89,7 @@ data class FromChannelForumContentMessageImpl<T: MessageContent>(
 ) : FromChannelForumContentMessage<T>
 
 data class AnonymousForumContentMessageImpl<T : MessageContent>(
-    override val chat: ForumChat,
+    override val chat: PreviewForumChat,
     override val messageId: MessageId,
     override val threadId: MessageThreadId,
     override val date: DateTime,
@@ -105,7 +105,7 @@ data class AnonymousForumContentMessageImpl<T : MessageContent>(
 ) : AnonymousForumContentMessage<T>
 
 data class CommonForumContentMessageImpl<T : MessageContent>(
-    override val chat: ForumChat,
+    override val chat: PreviewForumChat,
     override val messageId: MessageId,
     override val threadId: MessageThreadId,
     override val from: User,

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/message/PassportMessage.kt

@@ -4,13 +4,14 @@ import korlibs.time.DateTime
 import dev.inmo.tgbotapi.types.MessageId
 import dev.inmo.tgbotapi.types.chat.User
 import dev.inmo.tgbotapi.types.chat.Chat
+import dev.inmo.tgbotapi.types.chat.PreviewChat
 import dev.inmo.tgbotapi.types.message.abstracts.FromUserMessage
 import dev.inmo.tgbotapi.types.message.abstracts.Message
 import dev.inmo.tgbotapi.types.passport.PassportData
 
 data class PassportMessage(
     override val messageId: MessageId,
-    override val chat: Chat,
+    override val chat: PreviewChat,
     override val from: User,
     override val date: DateTime,
     val passportData: PassportData

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/message/PrivateContentMessageImpl.kt

@@ -13,7 +13,7 @@ import dev.inmo.tgbotapi.types.message.content.MessageContent
 data class PrivateContentMessageImpl<T: MessageContent>(
     override val messageId: MessageId,
     override val from: User,
-    override val chat: Chat,
+    override val chat: PreviewPrivateChat,
     override val content: T,
     override val date: DateTime,
     override val editDate: DateTime?,

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/message/PrivateEventMessage.kt

@@ -2,13 +2,14 @@ package dev.inmo.tgbotapi.types.message
 
 import korlibs.time.DateTime
 import dev.inmo.tgbotapi.types.MessageId
+import dev.inmo.tgbotapi.types.chat.PreviewPrivateChat
 import dev.inmo.tgbotapi.types.chat.PrivateChat
 import dev.inmo.tgbotapi.types.message.ChatEvents.abstracts.PrivateEvent
 import dev.inmo.tgbotapi.types.message.abstracts.ChatEventMessage
 
 data class PrivateEventMessage<T : PrivateEvent>(
     override val messageId: MessageId,
-    override val chat: PrivateChat,
+    override val chat: PreviewPrivateChat,
     override val chatEvent: T,
     override val date: DateTime
 ) : ChatEventMessage<T>

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/message/RawMessage.kt

@@ -43,11 +43,11 @@ internal data class RawMessage(
     @SerialName(messageIdField)
     val messageId: MessageId,
     val date: TelegramDate,
-    private val chat: Chat,
+    private val chat: PreviewChat,
     @SerialName(messageThreadIdField)
     private val messageThreadId: MessageThreadId? = null,
     private val from: User? = null,
-    private val sender_chat: PublicChat? = null,
+    private val sender_chat: PreviewPublicChat? = null,
     private val forward_from: User? = null,
     private val forward_from_chat: Chat? = null,
     private val forward_from_message_id: MessageId? = null,
@@ -274,27 +274,27 @@ internal data class RawMessage(
         try {
             chatEvent?.let { chatEvent ->
                 when (chat) {
-                    is SupergroupChat -> CommonSupergroupEventMessage(
+                    is PreviewSupergroupChat -> CommonSupergroupEventMessage(
                         messageId,
                         from ?: error("Supergroup events are expected to contain 'from' field"),
                         chat,
                         chatEvent as? SupergroupEvent ?: throwWrongChatEvent(SupergroupEvent::class, chatEvent),
                         date.asDate
                     )
-                    is GroupChat -> CommonGroupEventMessage(
+                    is PreviewGroupChat -> CommonGroupEventMessage(
                         messageId,
                         from ?: error("Supergroup events are expected to contain 'from' field"),
                         chat,
                         chatEvent as? GroupEvent ?: throwWrongChatEvent(GroupChat::class, chatEvent),
                         date.asDate
                     )
-                    is ChannelChat -> ChannelEventMessage(
+                    is PreviewChannelChat -> ChannelEventMessage(
                         messageId,
                         chat,
                         chatEvent as? ChannelEvent ?: throwWrongChatEvent(ChannelEvent::class, chatEvent),
                         date.asDate
                     )
-                    is PrivateChat -> PrivateEventMessage(
+                    is PreviewPrivateChat -> PrivateEventMessage(
                         messageId,
                         chat,
                         chatEvent as? PrivateEvent ?: throwWrongChatEvent(PrivateEvent::class, chatEvent),
@@ -303,8 +303,8 @@ internal data class RawMessage(
                     else -> error("Expected one of the public chats, but was $chat (in extracting of chat event message)")
                 }
             } ?: content?.let { content -> when (chat) {
-                    is PublicChat -> when (chat) {
+                    is PreviewPublicChat -> when (chat) {
-                        is ChannelChat -> ChannelContentMessageImpl(
+                        is PreviewChannelChat -> ChannelContentMessageImpl(
                             messageId,
                             chat,
                             content,
@@ -318,17 +318,16 @@ internal data class RawMessage(
                             author_signature,
                             media_group_id
                         )
-                        is ForumChat -> if (messageThreadId != null) {
+                        is PreviewForumChat -> if (messageThreadId != null) {
                             val chatId = ChatIdWithThreadId(
                                 chat.id.chatId,
                                 messageThreadId
                             )
                             val actualForumChat = when (chat) {
-                                is ExtendedForumChatImpl -> chat.copy(id = chatId)
                                 is ForumChatImpl -> chat.copy(id = chatId)
                             }
                             when (sender_chat) {
-                                is ChannelChat -> FromChannelForumContentMessageImpl(
+                                is PreviewChannelChat -> FromChannelForumContentMessageImpl(
                                     actualForumChat,
                                     sender_chat,
                                     messageId,
@@ -344,7 +343,7 @@ internal data class RawMessage(
                                     author_signature,
                                     media_group_id
                                 )
-                                is GroupChat -> AnonymousForumContentMessageImpl(
+                                is PreviewGroupChat -> AnonymousForumContentMessageImpl(
                                     actualForumChat,
                                     messageId,
                                     messageThreadId,
@@ -377,7 +376,7 @@ internal data class RawMessage(
                             }
                         } else {
                             when (sender_chat) {
-                                is ChannelChat -> if (is_automatic_forward == true) {
+                                is PreviewChannelChat -> if (is_automatic_forward == true) {
                                     ConnectedFromChannelGroupContentMessageImpl(
                                         chat,
                                         sender_chat,
@@ -440,8 +439,8 @@ internal data class RawMessage(
                                 )
                             }
                         }
-                        is GroupChat -> when (sender_chat) {
+                        is PreviewGroupChat -> when (sender_chat) {
-                            is ChannelChat -> if (is_automatic_forward == true) {
+                            is PreviewChannelChat -> if (is_automatic_forward == true) {
                                 ConnectedFromChannelGroupContentMessageImpl(
                                     chat,
                                     sender_chat,
@@ -474,7 +473,7 @@ internal data class RawMessage(
                                     media_group_id
                                 )
                             }
-                            is GroupChat -> AnonymousGroupContentMessageImpl(
+                            is PreviewGroupChat -> AnonymousGroupContentMessageImpl(
                                 chat,
                                 messageId,
                                 date.asDate,
@@ -504,7 +503,7 @@ internal data class RawMessage(
                             )
                         }
                     }
-                    is PrivateChat -> PrivateContentMessageImpl(
+                    is PreviewPrivateChat -> PrivateContentMessageImpl(
                         messageId,
                         from ?: error("Was detected common message, but owner (sender) of the message was not found"),
                         chat,

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/message/abstracts/ChannelContentMessage.kt

@@ -1,10 +1,11 @@
 package dev.inmo.tgbotapi.types.message.abstracts
 
 import dev.inmo.tgbotapi.types.chat.ChannelChat
+import dev.inmo.tgbotapi.types.chat.PreviewChannelChat
 import dev.inmo.tgbotapi.types.message.content.MessageContent
 
 interface ChannelContentMessage<T: MessageContent> : PossiblySentViaBotCommonMessage<T>, SignedMessage, WithSenderChatMessage {
-    override val chat: ChannelChat
+    override val chat: PreviewChannelChat
-    override val senderChat: ChannelChat
+    override val senderChat: PreviewChannelChat
         get() = chat
 }

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/message/abstracts/GroupEventMessage.kt

@@ -1,5 +1,9 @@
 package dev.inmo.tgbotapi.types.message.abstracts
 
+import dev.inmo.tgbotapi.types.chat.PreviewChat
+import dev.inmo.tgbotapi.types.chat.PreviewGroupChat
 import dev.inmo.tgbotapi.types.message.ChatEvents.abstracts.GroupEvent
 
-interface GroupEventMessage<T : GroupEvent> : ChatEventMessage<T>, FromUserMessage
+interface GroupEventMessage<T : GroupEvent> : ChatEventMessage<T>, FromUserMessage {
+    override val chat: PreviewGroupChat
+}

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/message/abstracts/GroupMessages.kt

@@ -1,24 +1,22 @@
 package dev.inmo.tgbotapi.types.message.abstracts
 
 import dev.inmo.tgbotapi.types.MessageThreadId
-import dev.inmo.tgbotapi.types.chat.ChannelChat
+import dev.inmo.tgbotapi.types.chat.*
-import dev.inmo.tgbotapi.types.chat.ForumChat
-import dev.inmo.tgbotapi.types.chat.GroupChat
 import dev.inmo.tgbotapi.types.message.content.MessageContent
 
 sealed interface GroupContentMessage<T : MessageContent> : PublicContentMessage<T> {
-    override val chat: GroupChat
+    override val chat: PreviewGroupChat
 }
 
 sealed interface ForumContentMessage<T : MessageContent> : GroupContentMessage<T>, PossiblyTopicMessage {
-    override val chat: ForumChat
+    override val chat: PreviewForumChat
     override val threadId: MessageThreadId
 }
 
 
 sealed interface FromChannelGroupContentMessage<T : MessageContent> : GroupContentMessage<T>, SignedMessage, WithSenderChatMessage {
-    val channel: ChannelChat
+    val channel: PreviewChannelChat
-    override val senderChat: ChannelChat
+    override val senderChat: PreviewChannelChat
         get() = channel
 }
 
@@ -26,7 +24,7 @@ interface ConnectedFromChannelGroupContentMessage<T: MessageContent> : FromChann
 interface UnconnectedFromChannelGroupContentMessage<T: MessageContent> : FromChannelGroupContentMessage<T>
 
 interface AnonymousGroupContentMessage<T : MessageContent> : GroupContentMessage<T>, SignedMessage, WithSenderChatMessage {
-    override val senderChat: GroupChat
+    override val senderChat: PreviewGroupChat
         get() = chat
 }
 
@@ -35,7 +33,7 @@ interface CommonGroupContentMessage<T : MessageContent> : GroupContentMessage<T>
 interface FromChannelForumContentMessage<T: MessageContent> : FromChannelGroupContentMessage<T>, ForumContentMessage<T>
 
 interface AnonymousForumContentMessage<T : MessageContent> : ForumContentMessage<T>, SignedMessage, WithSenderChatMessage {
-    override val senderChat: GroupChat
+    override val senderChat: PreviewGroupChat
         get() = chat
 }
 

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/message/abstracts/Message.kt

@@ -1,10 +1,11 @@
 package dev.inmo.tgbotapi.types.message.abstracts
 
 import korlibs.time.DateTime
-import dev.inmo.tgbotapi.abstracts.WithChat
+import dev.inmo.tgbotapi.abstracts.WithPreviewChat
 import dev.inmo.tgbotapi.utils.internal.ClassCastsIncluded
 import dev.inmo.tgbotapi.types.MessageId
 import dev.inmo.tgbotapi.types.chat.Chat
+import dev.inmo.tgbotapi.types.chat.PreviewChat
 import dev.inmo.tgbotapi.types.message.RawMessage
 import kotlinx.serialization.*
 import kotlinx.serialization.descriptors.*
@@ -12,14 +13,14 @@ import kotlinx.serialization.encoding.Decoder
 import kotlinx.serialization.encoding.Encoder
 
 @ClassCastsIncluded(excludeRegex = ".*Impl")
-interface Message : WithChat {
+interface Message : WithPreviewChat {
     val messageId: MessageId
     val date: DateTime
 }
 
 data class UnknownMessageType(
     override val messageId: MessageId,
-    override val chat: Chat,
+    override val chat: PreviewChat,
     override val date: DateTime,
     val insideException: Exception
 ) : Message

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/message/abstracts/PrivateMessage.kt

@@ -1,5 +1,9 @@
 package dev.inmo.tgbotapi.types.message.abstracts
 
+import dev.inmo.tgbotapi.types.chat.PreviewChat
+import dev.inmo.tgbotapi.types.chat.PreviewPrivateChat
 import dev.inmo.tgbotapi.types.message.content.MessageContent
 
-interface PrivateContentMessage<T: MessageContent> : PossiblySentViaBotCommonMessage<T>, FromUserMessage
+interface PrivateContentMessage<T: MessageContent> : PossiblySentViaBotCommonMessage<T>, FromUserMessage {
+    override val chat: PreviewPrivateChat
+}

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/message/abstracts/PublicMessage.kt

@@ -1,8 +1,9 @@
 package dev.inmo.tgbotapi.types.message.abstracts
 
+import dev.inmo.tgbotapi.types.chat.PreviewPublicChat
 import dev.inmo.tgbotapi.types.chat.PublicChat
 import dev.inmo.tgbotapi.types.message.content.MessageContent
 
 sealed interface PublicContentMessage<T: MessageContent> : PossiblySentViaBotCommonMessage<T> {
-    override val chat: PublicChat
+    override val chat: PreviewPublicChat
 }

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/message/abstracts/SupergroupEventMessage.kt

@@ -1,5 +1,9 @@
 package dev.inmo.tgbotapi.types.message.abstracts
 
+import dev.inmo.tgbotapi.types.chat.PreviewGroupChat
+import dev.inmo.tgbotapi.types.chat.PreviewSupergroupChat
 import dev.inmo.tgbotapi.types.message.ChatEvents.abstracts.SupergroupEvent
 
-interface SupergroupEventMessage<T : SupergroupEvent> : GroupEventMessage<T>
+interface SupergroupEventMessage<T : SupergroupEvent> : GroupEventMessage<T> {
+    override val chat: PreviewSupergroupChat
+}

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/message/abstracts/WithSenderChatMessage.kt

@@ -1,7 +1,8 @@
 package dev.inmo.tgbotapi.types.message.abstracts
 
 import dev.inmo.tgbotapi.types.chat.Chat
+import dev.inmo.tgbotapi.types.chat.PreviewChat
 
 interface WithSenderChatMessage {
-    val senderChat: Chat
+    val senderChat: PreviewChat
 }

tgbotapi.utils/src/commonMain/kotlin/dev/inmo/tgbotapi/extensions/utils/ClassCastsNew.kt

@@ -126,6 +126,17 @@ import dev.inmo.tgbotapi.types.chat.ExtendedSupergroupChat
 import dev.inmo.tgbotapi.types.chat.ForumChat
 import dev.inmo.tgbotapi.types.chat.GroupChat
 import dev.inmo.tgbotapi.types.chat.PossiblyPremiumChat
+import dev.inmo.tgbotapi.types.chat.PreviewBot
+import dev.inmo.tgbotapi.types.chat.PreviewChannelChat
+import dev.inmo.tgbotapi.types.chat.PreviewChat
+import dev.inmo.tgbotapi.types.chat.PreviewForumChat
+import dev.inmo.tgbotapi.types.chat.PreviewGroupChat
+import dev.inmo.tgbotapi.types.chat.PreviewPrivateChat
+import dev.inmo.tgbotapi.types.chat.PreviewPublicChat
+import dev.inmo.tgbotapi.types.chat.PreviewSuperPublicChat
+import dev.inmo.tgbotapi.types.chat.PreviewSupergroupChat
+import dev.inmo.tgbotapi.types.chat.PreviewUser
+import dev.inmo.tgbotapi.types.chat.PreviewUsernameChat
 import dev.inmo.tgbotapi.types.chat.PrivateChat
 import dev.inmo.tgbotapi.types.chat.PublicChat
 import dev.inmo.tgbotapi.types.chat.SuperPublicChat
@@ -1969,12 +1980,30 @@ public inline fun Chat.userOrThrow(): User = this as dev.inmo.tgbotapi.types.cha
 
 public inline fun <T> Chat.ifUser(block: (User) -> T): T? = userOrNull() ?.let(block)
 
+public inline fun Chat.previewUserOrNull(): PreviewUser? = this as?
+    dev.inmo.tgbotapi.types.chat.PreviewUser
+
+public inline fun Chat.previewUserOrThrow(): PreviewUser = this as
+    dev.inmo.tgbotapi.types.chat.PreviewUser
+
+public inline fun <T> Chat.ifPreviewUser(block: (PreviewUser) -> T): T? = previewUserOrNull()
+    ?.let(block)
+
 public inline fun Chat.botOrNull(): Bot? = this as? dev.inmo.tgbotapi.types.chat.Bot
 
 public inline fun Chat.botOrThrow(): Bot = this as dev.inmo.tgbotapi.types.chat.Bot
 
 public inline fun <T> Chat.ifBot(block: (Bot) -> T): T? = botOrNull() ?.let(block)
 
+public inline fun Chat.previewBotOrNull(): PreviewBot? = this as?
+    dev.inmo.tgbotapi.types.chat.PreviewBot
+
+public inline fun Chat.previewBotOrThrow(): PreviewBot = this as
+    dev.inmo.tgbotapi.types.chat.PreviewBot
+
+public inline fun <T> Chat.ifPreviewBot(block: (PreviewBot) -> T): T? = previewBotOrNull()
+    ?.let(block)
+
 public inline fun Chat.commonBotOrNull(): CommonBot? = this as?
     dev.inmo.tgbotapi.types.chat.CommonBot
 
@@ -1992,6 +2021,87 @@ public inline fun Chat.commonUserOrThrow(): CommonUser = this as
 public inline fun <T> Chat.ifCommonUser(block: (CommonUser) -> T): T? = commonUserOrNull()
     ?.let(block)
 
+public inline fun Chat.previewChatOrNull(): PreviewChat? = this as?
+    dev.inmo.tgbotapi.types.chat.PreviewChat
+
+public inline fun Chat.previewChatOrThrow(): PreviewChat = this as
+    dev.inmo.tgbotapi.types.chat.PreviewChat
+
+public inline fun <T> Chat.ifPreviewChat(block: (PreviewChat) -> T): T? = previewChatOrNull()
+    ?.let(block)
+
+public inline fun Chat.previewUsernameChatOrNull(): PreviewUsernameChat? = this as?
+    dev.inmo.tgbotapi.types.chat.PreviewUsernameChat
+
+public inline fun Chat.previewUsernameChatOrThrow(): PreviewUsernameChat = this as
+    dev.inmo.tgbotapi.types.chat.PreviewUsernameChat
+
+public inline fun <T> Chat.ifPreviewUsernameChat(block: (PreviewUsernameChat) -> T): T? =
+    previewUsernameChatOrNull() ?.let(block)
+
+public inline fun Chat.previewPrivateChatOrNull(): PreviewPrivateChat? = this as?
+    dev.inmo.tgbotapi.types.chat.PreviewPrivateChat
+
+public inline fun Chat.previewPrivateChatOrThrow(): PreviewPrivateChat = this as
+    dev.inmo.tgbotapi.types.chat.PreviewPrivateChat
+
+public inline fun <T> Chat.ifPreviewPrivateChat(block: (PreviewPrivateChat) -> T): T? =
+    previewPrivateChatOrNull() ?.let(block)
+
+public inline fun Chat.previewPublicChatOrNull(): PreviewPublicChat? = this as?
+    dev.inmo.tgbotapi.types.chat.PreviewPublicChat
+
+public inline fun Chat.previewPublicChatOrThrow(): PreviewPublicChat = this as
+    dev.inmo.tgbotapi.types.chat.PreviewPublicChat
+
+public inline fun <T> Chat.ifPreviewPublicChat(block: (PreviewPublicChat) -> T): T? =
+    previewPublicChatOrNull() ?.let(block)
+
+public inline fun Chat.previewSuperPublicChatOrNull(): PreviewSuperPublicChat? = this as?
+    dev.inmo.tgbotapi.types.chat.PreviewSuperPublicChat
+
+public inline fun Chat.previewSuperPublicChatOrThrow(): PreviewSuperPublicChat = this as
+    dev.inmo.tgbotapi.types.chat.PreviewSuperPublicChat
+
+public inline fun <T> Chat.ifPreviewSuperPublicChat(block: (PreviewSuperPublicChat) -> T): T? =
+    previewSuperPublicChatOrNull() ?.let(block)
+
+public inline fun Chat.previewChannelChatOrNull(): PreviewChannelChat? = this as?
+    dev.inmo.tgbotapi.types.chat.PreviewChannelChat
+
+public inline fun Chat.previewChannelChatOrThrow(): PreviewChannelChat = this as
+    dev.inmo.tgbotapi.types.chat.PreviewChannelChat
+
+public inline fun <T> Chat.ifPreviewChannelChat(block: (PreviewChannelChat) -> T): T? =
+    previewChannelChatOrNull() ?.let(block)
+
+public inline fun Chat.previewGroupChatOrNull(): PreviewGroupChat? = this as?
+    dev.inmo.tgbotapi.types.chat.PreviewGroupChat
+
+public inline fun Chat.previewGroupChatOrThrow(): PreviewGroupChat = this as
+    dev.inmo.tgbotapi.types.chat.PreviewGroupChat
+
+public inline fun <T> Chat.ifPreviewGroupChat(block: (PreviewGroupChat) -> T): T? =
+    previewGroupChatOrNull() ?.let(block)
+
+public inline fun Chat.previewSupergroupChatOrNull(): PreviewSupergroupChat? = this as?
+    dev.inmo.tgbotapi.types.chat.PreviewSupergroupChat
+
+public inline fun Chat.previewSupergroupChatOrThrow(): PreviewSupergroupChat = this as
+    dev.inmo.tgbotapi.types.chat.PreviewSupergroupChat
+
+public inline fun <T> Chat.ifPreviewSupergroupChat(block: (PreviewSupergroupChat) -> T): T? =
+    previewSupergroupChatOrNull() ?.let(block)
+
+public inline fun Chat.previewForumChatOrNull(): PreviewForumChat? = this as?
+    dev.inmo.tgbotapi.types.chat.PreviewForumChat
+
+public inline fun Chat.previewForumChatOrThrow(): PreviewForumChat = this as
+    dev.inmo.tgbotapi.types.chat.PreviewForumChat
+
+public inline fun <T> Chat.ifPreviewForumChat(block: (PreviewForumChat) -> T): T? =
+    previewForumChatOrNull() ?.let(block)
+
 public inline fun Chat.unknownChatTypeOrNull(): UnknownChatType? = this as?
     dev.inmo.tgbotapi.types.chat.UnknownChatType
 

tgbotapi.utils/src/commonMain/kotlin/dev/inmo/tgbotapi/extensions/utils/extensions/FlowsSame.kt

@@ -1,7 +1,7 @@
 package dev.inmo.tgbotapi.extensions.utils.extensions
 
 import dev.inmo.tgbotapi.abstracts.FromUser
-import dev.inmo.tgbotapi.abstracts.WithChat
+import dev.inmo.tgbotapi.abstracts.WithPreviewChat
 import dev.inmo.tgbotapi.types.ChatIdentifier
 import dev.inmo.tgbotapi.types.UserId
 import dev.inmo.tgbotapi.types.chat.Chat
@@ -15,13 +15,13 @@ import kotlinx.coroutines.flow.transform
  * Will pass only those [T] which have [sameChat] as [chatId]
  */
 @Suppress("NOTHING_TO_INLINE")
-inline fun <T : WithChat> Flow<T>.fromChat(chatId: ChatIdentifier): Flow<T> = filter { it.sameChat(chatId) }
+inline fun <T : WithPreviewChat> Flow<T>.fromChat(chatId: ChatIdentifier): Flow<T> = filter { it.sameChat(chatId) }
 
 /**
  * Will pass only those [T] which have [sameChat] as [chatId]
  */
 @Suppress("NOTHING_TO_INLINE")
-inline fun <T : WithChat> Flow<T>.fromChat(chat: Chat): Flow<T> = fromChat(chat.id)
+inline fun <T : WithPreviewChat> Flow<T>.fromChat(chat: Chat): Flow<T> = fromChat(chat.id)
 
 /**
  * @return [Flow] with the [FromUser.user] field [User.id] the same as [userId]

tgbotapi.utils/src/commonMain/kotlin/dev/inmo/tgbotapi/extensions/utils/extensions/Same.kt

@@ -1,6 +1,6 @@
 package dev.inmo.tgbotapi.extensions.utils.extensions
 
-import dev.inmo.tgbotapi.abstracts.WithChat
+import dev.inmo.tgbotapi.abstracts.WithPreviewChat
 import dev.inmo.tgbotapi.extensions.utils.usernameChatOrNull
 import dev.inmo.tgbotapi.extensions.utils.whenUsernameChat
 import dev.inmo.tgbotapi.types.ChatIdentifier
@@ -16,21 +16,23 @@ import dev.inmo.tgbotapi.utils.extensions.threadIdOrNull
  * @return true in case if [this] message is placed in the chat with id == [chatId]
  */
 @Suppress("NOTHING_TO_INLINE")
-inline fun WithChat.sameChat(chatId: ChatIdentifier) = chat.id == chatId || (chatId is Username && chat.whenUsernameChat {
+inline fun WithPreviewChat.sameChat(chatId: ChatIdentifier) =
-    it.username == chatId
+    chat.id == chatId || (chatId is Username && chat.whenUsernameChat {
-} ?: false)
+        it.username == chatId
+    } ?: false)
 
 /**
  * @return true in case if [this] message is placed in the [chat]
  */
 @Suppress("NOTHING_TO_INLINE")
-inline fun WithChat.sameChat(chat: Chat) = sameChat(chat.id) || chat.usernameChatOrNull() ?.username ?.let { sameChat(it) } ?: false
+inline fun WithPreviewChat.sameChat(chat: Chat) =
+    sameChat(chat.id) || chat.usernameChatOrNull()?.username?.let { sameChat(it) } ?: false
 
 /**
  * @return true in case if [this] message is placed in the same chat that [other]
  */
 @Suppress("NOTHING_TO_INLINE")
-inline fun WithChat.sameChat(other: Message) = sameChat(other.chat)
+inline fun WithPreviewChat.sameChat(other: Message) = sameChat(other.chat)
 
 /**
  * @return true in case if [this] message is from the same chat (with id == [chatId]) and [this] [Message.messageId]