using UnityEngine;
using System.Collections.Generic;
using System.Linq;
using Streamingle;
using UnityRawInput;
using UnityEngine.Events;

public class EventController : MonoBehaviour, IController
{
    #region Classes
    [System.Serializable]
    public class EventGroup
    {
        [Header("Event Settings")]
        public string groupName = "New Event Group";
        public UnityEvent unityEvent = new UnityEvent();
        
        [Header("Hotkey Settings")]
        public List<RawKey> hotkeys = new List<RawKey>();
        [System.NonSerialized] public bool isRecording = false;
        [System.NonSerialized] private List<KeyCode> unityKeys = new List<KeyCode>();
        [System.NonSerialized] private float recordStartTime;
        [System.NonSerialized] private const float MAX_RECORD_TIME = 2f;

        public EventGroup(string name)
        {
            groupName = name;
            hotkeys = new List<RawKey>();
            unityEvent = new UnityEvent();
        }

        public void StartRecording()
        {
            isRecording = true;
            recordStartTime = Time.time;
            hotkeys.Clear();
        }

        public void StopRecording()
        {
            isRecording = false;
            InitializeUnityKeys();
        }

        public void UpdateRecording()
        {
            if (!isRecording) return;

            if (Time.time - recordStartTime > MAX_RECORD_TIME)
            {
                StopRecording();
                return;
            }

            foreach (KeyCode keyCode in System.Enum.GetValues(typeof(KeyCode)))
            {
                if (Input.GetKeyDown(keyCode) && KeyMapping.TryGetRawKey(keyCode, out RawKey rawKey))
                {
                    if (!hotkeys.Contains(rawKey))
                    {
                        hotkeys.Add(rawKey);
                    }
                }
            }

            bool allKeysReleased = hotkeys.Any() && hotkeys.All(key => !Input.GetKey(KeyMapping.TryGetKeyCode(key, out KeyCode keyCode) ? keyCode : KeyCode.None));

            if (allKeysReleased)
            {
                StopRecording();
            }
        }

        public void InitializeUnityKeys()
        {
            unityKeys.Clear();
            
            if (hotkeys == null || !hotkeys.Any()) return;
            
            foreach (var hotkey in hotkeys)
            {
                if (KeyMapping.TryGetKeyCode(hotkey, out KeyCode keyCode) && keyCode != KeyCode.None)
                {
                    unityKeys.Add(keyCode);
                }
            }
        }

        public bool IsTriggered()
        {
            if (isRecording) return false;

            if (hotkeys == null || !hotkeys.Any()) return false;

            bool allHotkeysPressed = hotkeys.All(key => RawInput.IsKeyDown(key));
            if (allHotkeysPressed) return true;

            if (unityKeys.Any())
            {
                return unityKeys.All(key => Input.GetKey(key));
            }

            return false;
        }

        public void ExecuteEvent()
        {
            if (unityEvent != null)
            {
                unityEvent.Invoke();
            }
        }

        public override string ToString() => 
            hotkeys?.Any() == true ? $"{groupName} ({string.Join(" + ", hotkeys)})" : $"{groupName} (설정되지 않음)";
    }

    private static class KeyMapping
    {
        private static readonly Dictionary<KeyCode, RawKey> _mapping;

        static KeyMapping()
        {
            _mapping = new Dictionary<KeyCode, RawKey>(RawKeySetup.KeyMapping);
        }

        public static bool TryGetRawKey(KeyCode keyCode, out RawKey rawKey)
        {
            return _mapping.TryGetValue(keyCode, out rawKey);
        }

        public static bool TryGetKeyCode(RawKey rawKey, out KeyCode keyCode)
        {
            var pair = _mapping.FirstOrDefault(x => x.Value == rawKey);
            keyCode = pair.Key;
            return keyCode != KeyCode.None;
        }

        public static bool IsValidRawKey(RawKey key)
        {
            return _mapping.ContainsValue(key);
        }
    }
    #endregion

    #region Events
    public delegate void EventGroupExecutedEventHandler(EventGroup eventGroup);
    public event EventGroupExecutedEventHandler OnEventExecuted;
    #endregion

    #region Fields
    [SerializeField] public List<EventGroup> eventGroups = new List<EventGroup>();
    
    [Header("Event Control Settings")]
    [SerializeField] private bool autoFindEvents = false; // 태그 기능 비활성화
    
    private EventGroup currentGroup;
    private StreamDeckServerManager streamDeckManager;
    #endregion

    #region Properties
    public EventGroup CurrentGroup => currentGroup;
    public int CurrentIndex => eventGroups.IndexOf(currentGroup);
    #endregion

    #region Unity Messages
    private void Awake()
    {
        InitializeEventGroups();
        InitializeRawInput();
        
        // StreamDeckServerManager 찾기
        streamDeckManager = FindObjectOfType<StreamDeckServerManager>();
        if (streamDeckManager == null)
        {
            Debug.LogWarning("[EventController] StreamDeckServerManager를 찾을 수 없습니다. 스트림덱 연동이 비활성화됩니다.");
        }
    }

    private void OnDestroy()
    {
        if (RawInput.IsRunning)
        {
            RawInput.OnKeyDown -= HandleRawKeyDown;
            RawInput.Stop();
        }
    }

    private void Update()
    {
        UpdateHotkeyRecording();
        HandleHotkeys();
    }
    #endregion

    #region Initialization
    public void InitializeEventGroups()
    {
        // 태그 기능 제거 - 수동으로 이벤트 그룹을 추가해야 함

        // 첫 번째 그룹을 기본으로 설정
        if (eventGroups.Count > 0 && currentGroup == null)
        {
            currentGroup = eventGroups[0];
        }

        Debug.Log($"[EventController] {eventGroups.Count}개의 이벤트 그룹이 초기화되었습니다.");
    }

    private void InitializeRawInput()
    {
        if (!RawInput.IsRunning)
        {
            RawInput.Start();
            RawInput.WorkInBackground = true;
        }
        // 중복 구독 방지를 위해 먼저 해제 후 구독
        RawInput.OnKeyDown -= HandleRawKeyDown;
        RawInput.OnKeyDown += HandleRawKeyDown;
    }

    private void UpdateHotkeyRecording()
    {
        foreach (var group in eventGroups)
        {
            if (group.isRecording)
            {
                group.UpdateRecording();
            }
        }
    }

    private void HandleRawKeyDown(RawKey key)
    {
        // 핫키 레코딩 중일 때는 처리하지 않음
        if (eventGroups.Any(g => g.isRecording)) return;
    }

    private void HandleHotkeys()
    {
        foreach (var group in eventGroups)
        {
            if (group.IsTriggered())
            {
                ExecuteEvent(group);
            }
        }
    }
    #endregion

    #region Public Methods
    public void Set(int index)
    {
        if (index < 0 || index >= eventGroups.Count)
        {
            Debug.LogWarning($"[EventController] 유효하지 않은 인덱스: {index}");
            return;
        }

        currentGroup = eventGroups[index];
        Debug.Log($"[EventController] 현재 이벤트 그룹: {currentGroup.groupName}");

        // StreamDeck에 알림
        if (streamDeckManager != null)
        {
            streamDeckManager.NotifyEventChanged();
        }
    }

    public void ExecuteEvent(int index)
    {
        if (index < 0 || index >= eventGroups.Count)
        {
            Debug.LogWarning($"[EventController] 유효하지 않은 인덱스: {index}");
            return;
        }

        ExecuteEvent(eventGroups[index]);
    }

    public void ExecuteEvent(EventGroup group)
    {
        if (group == null)
        {
            Debug.LogWarning("[EventController] 이벤트 그룹이 null입니다.");
            return;
        }

        Debug.Log($"[EventController] 이벤트 실행: {group.groupName}");
        group.ExecuteEvent();
        
        // 이벤트 발생 알림
        OnEventExecuted?.Invoke(group);

        // StreamDeck에 알림
        if (streamDeckManager != null)
        {
            streamDeckManager.NotifyEventChanged();
        }
    }

    public void ExecuteCurrentEvent()
    {
        if (currentGroup != null)
        {
            ExecuteEvent(currentGroup);
        }
        else
        {
            Debug.LogWarning("[EventController] 현재 이벤트 그룹이 설정되지 않았습니다.");
        }
    }

    public void AddGroup(string groupName, GameObject targetObject = null)
    {
        var newGroup = new EventGroup(groupName);
        
        if (targetObject != null)
        {
            // 대상 오브젝트에 UnityEvent 컴포넌트가 있다면 연결
            var eventComponent = targetObject.GetComponent<UnityEvent>();
            if (eventComponent != null)
            {
                newGroup.unityEvent = eventComponent;
            }
        }
        
        eventGroups.Add(newGroup);
        Debug.Log($"[EventController] 이벤트 그룹 추가: {groupName}");
    }

    public void RemoveGroup(int index)
    {
        if (index < 0 || index >= eventGroups.Count)
        {
            Debug.LogWarning($"[EventController] 유효하지 않은 인덱스: {index}");
            return;
        }

        var groupToRemove = eventGroups[index];
        eventGroups.RemoveAt(index);
        
        if (currentGroup == groupToRemove)
        {
            currentGroup = eventGroups.Count > 0 ? eventGroups[0] : null;
        }
        
        Debug.Log($"[EventController] 이벤트 그룹 제거: {groupToRemove.groupName}");
    }

    public void StartRecordingHotkey(int groupIndex)
    {
        if (groupIndex < 0 || groupIndex >= eventGroups.Count)
        {
            Debug.LogWarning($"[EventController] 유효하지 않은 인덱스: {groupIndex}");
            return;
        }

        eventGroups[groupIndex].StartRecording();
        Debug.Log($"[EventController] 핫키 레코딩 시작: {eventGroups[groupIndex].groupName}");
    }

    public void StopRecordingHotkey(int groupIndex)
    {
        if (groupIndex < 0 || groupIndex >= eventGroups.Count)
        {
            Debug.LogWarning($"[EventController] 유효하지 않은 인덱스: {groupIndex}");
            return;
        }

        eventGroups[groupIndex].StopRecording();
        Debug.Log($"[EventController] 핫키 레코딩 종료: {eventGroups[groupIndex].groupName}");
    }

    private void NotifyEventChanged()
    {
        // StreamDeck에 이벤트 변경 알림
        if (streamDeckManager != null)
        {
            streamDeckManager.NotifyEventChanged();
        }
    }
    #endregion

    #region StreamDeck Integration
    public EventListData GetEventListData()
    {
        var eventData = new EventPresetData[eventGroups.Count];
        
        for (int i = 0; i < eventGroups.Count; i++)
        {
            var group = eventGroups[i];
            eventData[i] = new EventPresetData
            {
                index = i,
                name = group.groupName,
                hotkey = group.hotkeys.Any() ? string.Join(" + ", group.hotkeys) : "설정되지 않음"
            };
        }

        return new EventListData
        {
            event_count = eventGroups.Count,
            events = eventData,
            current_index = CurrentIndex
        };
    }

    public EventStateData GetCurrentEventState()
    {
        return new EventStateData
        {
            current_index = CurrentIndex,
            event_name = currentGroup?.groupName ?? "없음",
            total_events = eventGroups.Count
        };
    }

    public string GetEventListJson()
    {
        return JsonUtility.ToJson(GetEventListData());
    }

    public string GetEventStateJson()
    {
        return JsonUtility.ToJson(GetCurrentEventState());
    }
    #endregion

    #region Data Classes
    [System.Serializable]
    public class EventPresetData
    {
        public int index;
        public string name;
        public string hotkey;
    }

    [System.Serializable]
    public class EventListData
    {
        public int event_count;
        public EventPresetData[] events;
        public int current_index;
    }

    [System.Serializable]
    public class EventStateData
    {
        public int current_index;
        public string event_name;
        public int total_events;
    }
    #endregion

    #region IController Implementation
    public string GetControllerId()
    {
        return "event_controller";
    }

    public string GetControllerName()
    {
        return "Event Controller";
    }

    public object GetControllerData()
    {
        return GetEventListData();
    }

    public void ExecuteAction(string actionId, object parameters)
    {
        switch (actionId)
        {
            case "execute_event":
                if (parameters is int executeIndex)
                {
                    ExecuteEvent(executeIndex);
                }
                break;
            case "set_event":
                if (parameters is int setIndex)
                {
                    Set(setIndex);
                }
                break;
            default:
                Debug.LogWarning($"[EventController] 알 수 없는 액션: {actionId}");
                break;
        }
    }
    #endregion
}