Add typed poll and reaction states to Android message models

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

@@ -67,7 +67,8 @@ data class Message(val id: Long, val author: String, val text: String, val ts: L
                    val imageWidth: Int = 0, val imageHeight: Int = 0,
                    val videoWidth: Int = 0, val videoHeight: Int = 0, val videoDurationMs: Int = 0,
                    val downloadState: String = "", /* "", "downloading", "downloaded", "error" */
-                   val deliveryStatusRes: Int = 0, val inviteGroupName: String? = null, val authorNodeId: Long = 0)
+                   val deliveryStatusRes: Int = 0, val inviteGroupName: String? = null, val authorNodeId: Long = 0,
+                   val messageId: String = "", val feedback: FeedbackState? = null)
 
 data class ChatMember(val nodeId: Long, val name: String, val online: Boolean = false,
                       val isAdmin: Boolean = false, val isSuper: Boolean = false,
@@ -382,6 +383,7 @@ class ChatRepository {
 
                 list.add(Message(
                     id = obj.getLong("id"),
+                    messageId = obj.optString("messageId"),
                     author = obj.getString("author"),
                     authorNodeId = obj.optLong("authorNodeId"),
                     text = displayText,

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

@@ -0,0 +1,43 @@
+package com.utun.chat.data
+
+import org.json.JSONArray
+import org.json.JSONObject
+
+data class ReactionState(val id: Int, val emoji: String, val count: Int = 0, val mine: Boolean = false)
+data class PollOption(val id: Int, val text: String, val count: Int, val percent: Double)
+data class PollResponse(val nodeId: Long, val choices: List<Int>, val custom: String)
+data class PollState(val question: String, val multiple: Boolean, val allowCustom: Boolean,
+                     val options: List<PollOption>, val voters: Int, val ver: Long,
+                     val myChoices: List<Int>, val myCustom: String, val answers: List<PollResponse>)
+data class FeedbackState(val messageId: String, val pending: Boolean, val reactions: List<ReactionState>, val poll: PollState?)
+
+private fun JSONArray?.choices(): List<Int> = if (this == null) emptyList() else (0 until length()).map { getInt(it) }
+
+/** Формат и правила задаёт ядро; интерфейс разбирает готовый снимок. */
+fun parseFeedback(json: JSONObject): FeedbackState {
+    val id = json.getString("message_id")
+    require(id.length == 64) { "Invalid message ID" }
+    val reactions = json.getJSONArray("reactions").let { values ->
+        (0 until values.length()).map { i -> values.getJSONObject(i).let {
+            ReactionState(it.getInt("id"), it.getString("emoji"), it.getInt("count"), it.getBoolean("mine"))
+        } }
+    }
+    val poll = json.optJSONObject("poll")?.let { value ->
+        val options = value.getJSONArray("options").let { values ->
+            (0 until values.length()).map { i -> values.getJSONObject(i).let {
+                PollOption(it.getInt("id"), it.getString("text"), it.getInt("count"), it.getDouble("percent"))
+            } }
+        }
+        val mine = value.getJSONObject("mine")
+        val answers = value.getJSONArray("answers").let { values ->
+            (0 until values.length()).map { i -> values.getJSONObject(i).let { row ->
+                val answer = row.getJSONObject("answer")
+                PollResponse(row.getString("node_id").removePrefix("0x").toLong(16),
+                    answer.optJSONArray("choices").choices(), answer.optString("custom"))
+            } }
+        }
+        PollState(value.getString("question"), value.getString("mode") == "multiple", value.getBoolean("allow_custom_answer"),
+            options, value.getInt("voters"), value.getLong("ver"), mine.optJSONArray("choices").choices(), mine.optString("custom"), answers)
+    }
+    return FeedbackState(id, json.optBoolean("pending"), reactions, poll)
+}