Add an Android panel for own and peer DM devices

tools/chatgui-android/app/src/main/java/com/utun/chat/data/DmMembers.kt

@@ -0,0 +1,29 @@
+package com.utun.chat.data
+
+import java.nio.ByteBuffer
+import java.nio.ByteOrder
+
+/** Текущий состав закреплённых сторон PM; собственная копия общего member snapshot. */
+data class DmMember(val side: Int, val member: ChatMember)
+
+/** Атомарный decode CHAT_EVT_DM_MEMBERS; чужое поколение и неполный/повторный список отклоняются. */
+fun parseDmMembers(data: ByteArray, target: ConversationTarget.Pm): List<DmMember> {
+    require(data.size >= 12) { "Missing DM member header" }
+    val length = data[0].toInt() and 255
+    require(length in 1..63 && data.size >= 11 + length) { "Invalid DM member conversation length" }
+    require(String(data, 1, length, Charsets.UTF_8) == target.id) { "Different DM member conversation" }
+    val header = ByteBuffer.wrap(data, 1 + length, 10).order(ByteOrder.LITTLE_ENDIAN)
+    require(header.long == target.generation && target.generation > 0) { "Stale DM member generation" }
+    val count = header.short.toInt() and 65535
+    require(count <= 128 && data.size == 11 + length + count * (1 + MEMBER_WIRE_SIZE)) { "Invalid DM member count/size" }
+    val nodes = mutableSetOf<Long>()
+    return List(count) { index ->
+        val offset = 11 + length + index * (1 + MEMBER_WIRE_SIZE)
+        val side = data[offset].toInt() and 255
+        require(side in 0..1) { "Invalid DM member side" }
+        val wire = requireNotNull(parseMemberWire(data, offset + 1))
+        require(wire.nodeId != 0L && nodes.add(wire.nodeId)) { "Invalid/duplicate DM member node" }
+        DmMember(side, wire.toChatMember())
+    }.sortedWith(compareBy<DmMember> { it.side }.thenByDescending { it.member.isSelf }
+        .thenByDescending { it.member.online }.thenBy { it.member.nodeId.toULong() })
+}

tools/chatgui-android/app/src/main/java/com/utun/chat/ui/screens/DmMembersSheet.kt

@@ -0,0 +1,70 @@
+package com.utun.chat.ui.screens
+
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import com.utun.chat.R
+import com.utun.chat.data.*
+import com.utun.chat.ui.components.PeerStatusDot
+import kotlinx.coroutines.CancellationException
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.withContext
+
+/** Панель GROUPS: опрос живёт ровно столько, сколько открыта панель выбранного поколения. */
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun DmMembersSheet(conv: DmConversation, onDismiss: () -> Unit) {
+    val target = ConversationTarget.Pm(conv.convId, conv.generation)
+    var members by remember(target) { mutableStateOf<List<DmMember>>(emptyList()) }
+    var unavailable by remember(target) { mutableStateOf(false) }
+    LaunchedEffect(target, conv.closed) {
+        if (conv.closed) { members = emptyList(); return@LaunchedEffect }
+        while (true) {
+            try {
+                val snapshot = withContext(Dispatchers.IO) {
+                    parseDmMembers(checkNotNull(NativeLib.dmMembers(target.id, target.generation)), target)
+                }
+                if (snapshot != members) LogManager.addLog("DEBUG", "PM", "Members updated conv=${target.id} count=${snapshot.size}")
+                members = snapshot; unavailable = false
+            } catch (e: CancellationException) { throw e }
+            catch (e: Exception) {
+                LogManager.addLog("WARN", "PM", "Members unavailable conv=${target.id}: $e"); unavailable = true
+            }
+            delay(2000)
+        }
+    }
+    ModalBottomSheet(onDismissRequest = onDismiss) {
+        Text(stringResource(R.string.dm_members_title), style = MaterialTheme.typography.titleLarge, modifier = Modifier.padding(16.dp))
+        if (unavailable) Text(stringResource(R.string.dm_members_unavailable), modifier = Modifier.padding(horizontal = 16.dp))
+        LazyColumn(Modifier.fillMaxWidth().heightIn(max = 480.dp)) {
+            for (side in 0..1) {
+                item(key = "side:$side") {
+                    HorizontalDivider()
+                    Text(stringResource(if (side == 0) R.string.dm_my_devices else R.string.dm_peer_devices),
+                        fontWeight = FontWeight.Bold, modifier = Modifier.padding(16.dp))
+                }
+                items(members.filter { it.side == side }, key = { "node:${it.member.nodeId}" }) { entry ->
+                    val member = entry.member
+                    Row(Modifier.fillMaxWidth().padding(horizontal = 20.dp, vertical = 8.dp), verticalAlignment = Alignment.CenterVertically) {
+                        PeerStatusDot(member.online)
+                        Spacer(Modifier.width(12.dp))
+                        Column(Modifier.weight(1f)) {
+                            Text(member.name, fontWeight = if (member.isSelf) FontWeight.Bold else FontWeight.Normal)
+                            Text("0x%016x".format(member.nodeId), style = MaterialTheme.typography.bodySmall)
+                        }
+                        Text(stringResource(if (member.online) R.string.online else R.string.offline))
+                    }
+                }
+            }
+        }
+        Spacer(Modifier.height(16.dp))
+    }
+}

tools/chatgui-android/app/src/main/res/values/dm_groups.xml

@@ -1,5 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
+    <string name="dm_members_title">Conversation devices</string>
+    <string name="dm_my_devices">My devices</string>
+    <string name="dm_peer_devices">Peer devices</string>
+    <string name="dm_members_unavailable">Could not refresh the device list</string>
     <string name="dm_mode_title">Devices for this conversation</string>
     <string name="dm_mode_groups">With device groups</string>
     <string name="dm_mode_device">Only these devices</string>