Support for switching anonymousChat settings

binary-compatibility-validator/android/api/binary-compatibility-validator-android.api

@@ -392,6 +392,7 @@ public abstract interface class net/mamoe/mirai/contact/GroupSettings {
 	public abstract fun isAutoApproveEnabled ()Z
 	public abstract fun isMuteAll ()Z
 	public abstract fun setAllowMemberInvite (Z)V
+	public abstract fun setAnonymousChatEnabled (Z)V
 	public abstract fun setEntranceAnnouncement (Ljava/lang/String;)V
 	public abstract fun setMuteAll (Z)V
 }

binary-compatibility-validator/api/binary-compatibility-validator.api

@@ -392,6 +392,7 @@ public abstract interface class net/mamoe/mirai/contact/GroupSettings {
 	public abstract fun isAutoApproveEnabled ()Z
 	public abstract fun isMuteAll ()Z
 	public abstract fun setAllowMemberInvite (Z)V
+	public abstract fun setAnonymousChatEnabled (Z)V
 	public abstract fun setEntranceAnnouncement (Ljava/lang/String;)V
 	public abstract fun setMuteAll (Z)V
 }

mirai-core-api/src/commonMain/kotlin/contact/Group.kt

@@ -273,7 +273,7 @@ public interface GroupSettings {
     /**
      * 匿名聊天
      */
-    public val isAnonymousChatEnabled: Boolean
+    public var isAnonymousChatEnabled: Boolean
 }
 
 /**

mirai-core/src/commonMain/kotlin/contact/GroupSettingsImpl.kt

@@ -23,6 +23,8 @@ import net.mamoe.mirai.event.events.GroupNameChangeEvent
 import net.mamoe.mirai.internal.network.QQAndroidClient
 import net.mamoe.mirai.internal.network.protocol.packet.OutgoingPacket
 import net.mamoe.mirai.internal.network.protocol.packet.chat.TroopManagement.GroupOperation
+import net.mamoe.mirai.internal.network.protocol.packet.chat.TroopManagement.SwitchAnonymousChat
+import net.mamoe.mirai.internal.network.protocol.packet.sendAndExpect
 
 @Suppress("SetterBackingFieldAssignment")
 internal class GroupSettingsImpl(
@@ -91,9 +93,14 @@ internal class GroupSettingsImpl(
     @Deprecated("Don't use public var internally", level = DeprecationLevel.HIDDEN)
     override var isAnonymousChatEnabled: Boolean
         get() = isAnonymousChatEnabledField
-        @Suppress("UNUSED_PARAMETER")
         set(newValue) {
-            throw UnsupportedOperationException()
+            group.run {
+                checkBotPermission(MemberPermission.ADMINISTRATOR)
+                launch {
+                    //Handle it in NoticePipelineContext#processAllowAnonymousChat
+                    SwitchAnonymousChat(bot.client, id, newValue).sendAndExpect(bot.network)
+                }
+            }
         }
 
     @Deprecated("Don't use public var internally", level = DeprecationLevel.HIDDEN)

mirai-core/src/commonMain/kotlin/contact/info/GroupInfoImpl.kt

@@ -35,7 +35,7 @@ internal data class GroupInfoImpl(
         memo = stTroopNum.groupMemo,
         name = stTroopNum.groupName,
         allowMemberInvite = stTroopNum.dwGroupFlagExt?.and(0x000000c0) != 0L,
-        allowAnonymousChat = stTroopNum.dwGroupFlagExt?.and(0x40000000) == 0L,
+        allowAnonymousChat = stTroopNum.dwGroupFlagExt?.and(0x40000000) != 0L,
         autoApprove = stTroopNum.dwGroupFlagExt3?.and(0x00100000) == 0L,
         confessTalk = stTroopNum.dwGroupFlagExt3?.and(0x00002000) == 0L,
         muteAll = stTroopNum.dwShutUpTimestamp != 0L,

mirai-core/src/commonMain/kotlin/network/protocol/packet/PacketFactory.kt

@@ -152,6 +152,7 @@ internal object KnownPacketFactories {
         //  TroopManagement.GetGroupInfo,
         TroopManagement.EditGroupNametag,
         TroopManagement.Kick,
+        TroopManagement.SwitchAnonymousChat,
         TroopEssenceMsgManager.SetEssence,
         NudgePacket,
         Heartbeat.Alive,

mirai-core/src/commonMain/kotlin/network/protocol/packet/chat/TroopManagement.kt

@@ -218,6 +218,46 @@ internal class TroopManagement {
 
     }
 
+    internal object SwitchAnonymousChat : OutgoingPacketFactory<SwitchAnonymousChat.Response>("OidbSvc.0x568_22") {
+        override suspend fun ByteReadPacket.decode(bot: QQAndroidBot): Response {
+            val ret = this.readBytes()
+                .loadAs(OidbSso.OIDBSSOPkg.serializer()).result
+            return Response(
+                ret == 0
+            )
+        }
+
+        class Response(
+            val success: Boolean
+        ) : Packet {
+            override fun toString(): String = "TroopManagement.SwitchAnonymousChat.Response($success)"
+        }
+
+        operator fun invoke(
+            client: QQAndroidClient,
+            groupCode: Long,
+            switch: Boolean
+        ) = buildOutgoingUniPacket(client) {
+            writeProtoBuf(
+                OidbSso.OIDBSSOPkg.serializer(),
+                OidbSso.OIDBSSOPkg(
+                    command = 1384,
+                    serviceType = 22,
+                    result = 0,
+                    bodybuffer = buildPacket {
+                        writeInt(groupCode.toInt())
+                        if (switch) {
+                            writeByte(1)
+                        } else {
+                            writeByte(0)
+                        }
+                    }.readBytes()
+                )
+            )
+        }
+
+    }
+
     internal object GroupOperation : OutgoingPacketFactory<GroupOperation.Response>("OidbSvc.0x89a_0") {
         override suspend fun ByteReadPacket.decode(bot: QQAndroidBot): Response = Response