// Assets/Script/Editor/MessageChannelEditor.cs
using Unity.RenderStreaming;
using UnityEditor;
using UnityEngine;

namespace RenderStreaming.Editor
{
    [CustomEditor(typeof(MessageChannel))]
    public class MessageChannelEditor : UnityEditor.Editor
    {
        private Vector2 _scrollPos;
        private bool _showHistory = true;
        private bool _showStats = true;

        public override void OnInspectorGUI()
        {
            DrawDefaultInspector();

            var channel = (MessageChannel)target;

            EditorGUILayout.Space(10);

            // --- 连接状态 ---
            EditorGUILayout.BeginVertical("HelpBox");
            EditorGUILayout.LabelField("连接状态", EditorStyles.boldLabel);
            EditorGUI.indentLevel++;
            EditorGUILayout.LabelField("Channel Label", channel.Label);
            EditorGUILayout.LabelField("Connection ID", channel.ConnectionId ?? "未连接");
            var stateContent = channel.IsConnected
                ? new GUIContent("● 已连接", EditorGUIUtility.FindTexture("greenCheck"))
                : new GUIContent("○ 未连接");
            if (channel.IsConnected)
                GUI.color = Color.green;
            else
                GUI.color = Color.gray;
            EditorGUILayout.LabelField( stateContent);
            GUI.color = Color.white;
            EditorGUI.indentLevel--;
            EditorGUILayout.EndVertical();

            EditorGUILayout.Space(5);

            // --- 统计信息 ---
            if (_showStats)
            {
                EditorGUILayout.BeginVertical("HelpBox");
                _showStats = EditorGUILayout.BeginToggleGroup("统计信息", _showStats);
                EditorGUI.indentLevel++;
                EditorGUILayout.LabelField("收到消息总数", channel.ReceivedMessageCount.ToString());
                EditorGUILayout.LabelField("历史记录数", channel.MessageHistory.Count.ToString());
                EditorGUI.indentLevel--;
                EditorGUILayout.EndToggleGroup();
                EditorGUILayout.EndVertical();
            }

            EditorGUILayout.Space(5);

            // --- 消息历史 ---
            EditorGUILayout.BeginVertical("HelpBox");
            _showHistory = EditorGUILayout.Foldout(_showHistory, "消息历史", true, EditorStyles.boldLabel);

            if (_showHistory)
            {
                var history = channel.MessageHistory;

                if (history == null || history.Count == 0)
                {
                    EditorGUILayout.HelpBox("暂无消息记录", MessageType.Info);
                }
                else
                {
                    _scrollPos = EditorGUILayout.BeginScrollView(
                        _scrollPos, GUILayout.MinHeight(120), GUILayout.MaxHeight(300));

                    for (int i = history.Count - 1; i >= 0; i--)
                    {
                        var msg = history[i];

                        // 交替背景色
                        if (i % 2 == 0)
                        {
                            var bg = new GUIStyle("CN EntryBackEven");
                            EditorGUILayout.BeginVertical(bg);
                        }
                        else
                        {
                            EditorGUILayout.BeginVertical();
                        }

                        // 方向标签 + 时间
                        EditorGUILayout.BeginHorizontal();
                        var dirIcon = msg.isSent ? "▶ 发送" : "◀ 接收";
                        var dirStyle = msg.isSent
                            ? new GUIStyle(EditorStyles.label) { normal = { textColor = new Color(0.3f, 0.6f, 1f) } }
                            : new GUIStyle(EditorStyles.label) { normal = { textColor = new Color(1f, 0.7f, 0.2f) } };
                        EditorGUILayout.LabelField(dirIcon, dirStyle, GUILayout.Width(60));
                        EditorGUILayout.LabelField(msg.timestamp, GUILayout.Width(70));
                        //EditorGUILayout.LabelField(msg.connectionId, EditorStyles.miniLabel);
                        EditorGUILayout.EndHorizontal();

                        // 消息内容
                        EditorGUILayout.SelectableLabel(msg.type, EditorStyles.wordWrappedLabel,
                            GUILayout.Height(EditorStyles.wordWrappedLabel.CalcHeight(
                                new GUIContent(msg.type), EditorGUIUtility.currentViewWidth - 40)));

                        EditorGUILayout.EndVertical();
                        EditorGUILayout.Space(2);
                    }

                    EditorGUILayout.EndScrollView();
                }

                // 清除按钮
                EditorGUILayout.Space(5);
                GUI.backgroundColor = new Color(1f, 0.5f, 0.5f);
                if (GUILayout.Button("清除消息记录", GUILayout.Height(25)))
                {
                    Undo.RecordObject(channel, "Clear Message History");
                    channel.ClearHistory();
                    EditorUtility.SetDirty(channel);
                }
                GUI.backgroundColor = Color.white;
            }

            EditorGUILayout.EndVertical();

            // 持续刷新 Inspector（消息实时到达时自动更新）
            if (Application.isPlaying && channel.IsConnected)
            {
                Repaint();
            }
        }
    }
}