using System.Collections.Generic;
using UnityEditor;
using UnityEngine;

namespace AlicizaX
{
    [CustomEditor(typeof(GameObjectPoolManager))]
    public sealed class GameObjectPoolEditor : UnityEditor.Editor
    {
        private readonly Dictionary<string, bool> _foldoutState = new Dictionary<string, bool>();

        public override void OnInspectorGUI()
        {
            serializedObject.Update();

            DrawDefaultInspector();
            serializedObject.ApplyModifiedProperties();

            var pool = (GameObjectPoolManager)target;
            if (!Application.isPlaying)
            {
                EditorGUILayout.HelpBox("Enter Play Mode to inspect runtime pool state.", MessageType.Info);
                return;
            }

            if (!pool.showDetailedInfo)
            {
                return;
            }

            EditorGUILayout.Space();
            DrawRuntimeState(pool);
        }

        public override bool RequiresConstantRepaint()
        {
            var pool = target as GameObjectPoolManager;
            return pool != null && Application.isPlaying && pool.showDetailedInfo;
        }

        private void DrawRuntimeState(GameObjectPoolManager poolManager)
        {
            if (!poolManager.IsReady)
            {
                EditorGUILayout.HelpBox("GameObjectPool is initializing.", MessageType.Info);
                return;
            }

            List<GameObjectPoolSnapshot> snapshots = poolManager.GetDebugSnapshots();
            if (snapshots.Count == 0)
            {
                EditorGUILayout.HelpBox("No runtime pools have been created yet.", MessageType.Info);
                return;
            }

            for (int i = 0; i < snapshots.Count; i++)
            {
                DrawSnapshot(snapshots[i]);
            }
        }

        private void DrawSnapshot(GameObjectPoolSnapshot snapshot)
        {
            if (snapshot == null)
            {
                return;
            }

            string key = $"{snapshot.group}|{snapshot.assetPath}";
            if (!_foldoutState.ContainsKey(key))
            {
                _foldoutState[key] = false;
            }

            EditorGUILayout.BeginVertical("box");
            _foldoutState[key] = EditorGUILayout.Foldout(
                _foldoutState[key],
                $"{snapshot.group} | {snapshot.assetPath} ({snapshot.activeCount}/{snapshot.totalCount})",
                true);

            if (_foldoutState[key])
            {
                EditorGUILayout.LabelField("Entry", snapshot.entryName);
                EditorGUILayout.LabelField("Loader", snapshot.loaderType.ToString());
                EditorGUILayout.LabelField("Overflow Policy", snapshot.overflowPolicy.ToString());
                EditorGUILayout.LabelField("Min Retained", snapshot.minRetained.ToString());
                EditorGUILayout.LabelField("Soft Capacity", snapshot.softCapacity.ToString());
                EditorGUILayout.LabelField("Hard Capacity", snapshot.hardCapacity.ToString());
                EditorGUILayout.LabelField("Inactive", snapshot.inactiveCount.ToString());
                EditorGUILayout.LabelField("Prefab Loaded", snapshot.prefabLoaded ? "Yes" : "No");
                EditorGUILayout.LabelField("Prefab Idle", $"{snapshot.prefabIdleDuration:F1}s");
                EditorGUILayout.Space();
                EditorGUILayout.LabelField("Acquire", snapshot.acquireCount.ToString());
                EditorGUILayout.LabelField("Release", snapshot.releaseCount.ToString());
                EditorGUILayout.LabelField("Hit", snapshot.hitCount.ToString());
                EditorGUILayout.LabelField("Miss", snapshot.missCount.ToString());
                EditorGUILayout.LabelField("Expand", snapshot.expandCount.ToString());
                EditorGUILayout.LabelField("Exhausted", snapshot.exhaustedCount.ToString());
                EditorGUILayout.LabelField("Auto Recycle", snapshot.autoRecycleCount.ToString());
                EditorGUILayout.LabelField("Destroy", snapshot.destroyCount.ToString());
                EditorGUILayout.LabelField("Peak Active", snapshot.peakActive.ToString());
                EditorGUILayout.LabelField("Peak Total", snapshot.peakTotal.ToString());

                if (snapshot.instances.Count > 0)
                {
                    EditorGUILayout.Space();
                    EditorGUILayout.LabelField("Instances", EditorStyles.boldLabel);
                    for (int i = 0; i < snapshot.instances.Count; i++)
                    {
                        DrawInstance(snapshot.instances[i]);
                    }
                }
            }

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

        private static void DrawInstance(GameObjectPoolInstanceSnapshot instance)
        {
            if (instance == null)
            {
                return;
            }

            EditorGUILayout.BeginHorizontal("box");
            EditorGUILayout.BeginVertical();
            EditorGUILayout.LabelField(instance.instanceName, EditorStyles.boldLabel);
            EditorGUILayout.LabelField("State", instance.isActive ? "Active" : "Inactive");
            EditorGUILayout.LabelField("Life", $"{instance.lifeDuration:F1}s");
            if (!instance.isActive)
            {
                EditorGUILayout.LabelField("Idle", $"{instance.idleDuration:F1}s");
            }
            EditorGUILayout.EndVertical();
            EditorGUILayout.ObjectField(instance.gameObject, typeof(GameObject), true, GUILayout.Width(120));
            EditorGUILayout.EndHorizontal();
        }
    }
}