using System;
using UnityEngine;
using UnityEngine.UI;
using static GameManager;

public class SettingsInput : MonoBehaviour
{
    [SerializeField] private SettingsScreen screen;
    
    public GameManager gameManager;
    
    private bool isPaused = false;
    private bool pushUp = false;

    private bool leftHeld;
    private bool rightHeld;
    private bool downHeld;
    private bool turn;
    private bool isActivePanel = false;
    private bool waitForKeyRelease = false;

    private float unifiedTimer = 0f;
    private float timerThreshold = 1.25f;

    private float secretButtonTimer = 0f;

    private ButtonPinMapping secretKey    = ButtonPinMapping.secret1;
    private ButtonPinMapping downKey      = ButtonPinMapping.down1;
    private ButtonPinMapping upKey        = ButtonPinMapping.up1;
    private ButtonPinMapping leftKey      = ButtonPinMapping.left1;
    private ButtonPinMapping rightKey     = ButtonPinMapping.right1;
    private ButtonPinMapping action1      = ButtonPinMapping.action1;
    private ButtonPinMapping turnLeftKey  = ButtonPinMapping.turnLeft1;
    private ButtonPinMapping turnRightKey = ButtonPinMapping.turnRight1;

    private bool IsSecretHeld()     => In.GetButton(secretKey)    || Input.GetKey(KeyCode.F5);
    private bool IsSecretReleased() => In.GetButtonUp(secretKey)  || Input.GetKeyUp(KeyCode.F5);

    private SettingsPanelBase panel = null;
    private string currentOverlayId = null;

    private void OnEnable()
    {
        CreditSystem.OnInitialize += Subscribe;
    }

    private void OnDisable()
    {
        if (CreditSystem.onCoinAdded != null) CreditSystem.onCoinAdded.RemoveListener(View);
        CreditSystem.OnInitialize -= Subscribe;
    }

    private void Subscribe()
    {
        CreditSystem.onCoinAdded.AddListener(View);
    }

    private void View(int __, int _)
    {
        screen.AcceptView();
    }

    void Start()
    {
        screen.Open();
    }

    void Update()
    {
        // --- Вход в настройки через секретную кнопку ---
        if (IsSecretHeld())
        {
            secretButtonTimer += Time.deltaTime;

            if (secretButtonTimer <= 3f) return;

            if (isActivePanel)
            {
                ClosePanel();
                waitForKeyRelease = true;
            }

            isPaused = !isPaused;

            if (isPaused)
            {
                gameManager.SetState(GameState.Settings);
                gameManager.SetInputMode(InputMode.Settings);
            }
            else
            {
                gameManager.ReturnToMainMenu();
                if (gameManager.gameMode == GameMode.PlayerVsPlayer)
                    gameManager.opponentManager.ReturnToMainMenu();
            }

            secretButtonTimer = 0f;
        }

        if (IsSecretReleased())
        {
            secretButtonTimer = 0f;
            return;
        }

        if (!isPaused) return;

        if (isActivePanel)
        {
            HandelPanelInput();
            return;
        }

        HandleSettingsLogic();
    }

    // -------------------------------------------------------
    //  Управление внутри подпанели (TextInput и др.)
    // -------------------------------------------------------
    private void HandelPanelInput()
    {
        if (waitForKeyRelease)
        {
            if (!In.GetButton(downKey))
                waitForKeyRelease = false;
            return;
        }

        // Action1 — закрыть подпанель и вернуться в настройки
        if (In.GetButtonDown(action1))
        {
            ClosePanel();
            return;
        }

        int dirX = 0;
        if (panel.UsesContinuousInput)
        {
            if (In.GetButton(upKey))   dirX++;
            if (In.GetButton(downKey)) dirX--;
        }
        else
        {
            if (In.GetButtonDown(upKey))   dirX++;
            if (In.GetButtonDown(downKey)) dirX--;
        }
        panel.SwitchVertical(dirX);

        bool changeAmount = In.GetButton(turnLeftKey) || In.GetButton(turnRightKey);
        int dirY = 0;
        if (In.GetButtonDown(leftKey))  dirY--;
        if (In.GetButtonDown(rightKey)) dirY++;
        panel.SwitchHorizontal(dirY, changeAmount);
    }

    // -------------------------------------------------------
    //  Основная логика настроек
    // -------------------------------------------------------
    private void HandleSettingsLogic()
    {
        // --- Режим выбора опции (второй шаг) ---
        if (screen.IsChoosingOption)
        {
            // Left/Right — навигация между опциями (они расположены горизонтально)
            if (In.GetButtonDown(leftKey))  screen.Switch(-1);
            if (In.GetButtonDown(rightKey)) screen.Switch(+1);

            // Down — подтвердить и сохранить выбранную опцию
            if (In.GetButtonDown(downKey))
                screen.Accept();

            // Action1 — отмена без сохранения, вернуться к списку настроек
            if (In.GetButtonDown(action1))
                screen.CancelOption();

            return;
        }

        // --- Режим навигации по списку настроек (первый шаг) ---
        // Action1 = выход из меню настроек
        if (In.GetButtonDown(action1))
        {
            ExitSettings();
            return;
        }

        SettingType currentType = screen.GetCurrentSettingType();

        // Up / Down — навигация по списку
        if (In.GetButtonDown(upKey))   screen.Switch(-1);
        if (In.GetButtonDown(downKey)) screen.Switch(+1);

        // Panel / Action: удержание Right открывает панель / выполняет экшн
        if (currentType == SettingType.Panel || currentType == SettingType.Action)
        {
            if (In.GetButton(rightKey))
            {
                unifiedTimer += Time.deltaTime;
                screen.UpdateProgressBar(unifiedTimer / timerThreshold);

                if (unifiedTimer >= timerThreshold)
                {
                    int id = screen.GetCurrentPanelId();
                    if (currentType == SettingType.Panel)
                        OpenPanel(id);
                    else
                        ExecuteAction(id);
                    ResetTimer();
                }
            }
            else
            {
                ResetTimer();
            }
            return; // у Panel/Action нет Accept через Right-тап
        }

        ResetTimer();

        // Svitcher: Left / Right переключает мгновенно
        if (currentType == SettingType.Svitcher)
        {
            if (In.GetButtonDown(leftKey) || In.GetButtonDown(rightKey))
                screen.ToggleSwitcher();
            return;
        }

        // Normal: Right открывает панель опций (шаг 1)
        if (In.GetButtonDown(rightKey))
            screen.Accept();
    }

    // -------------------------------------------------------
    //  Открытие / закрытие подпанели
    // -------------------------------------------------------
    private void OpenPanel(int idPanel)
    {
        if (panel != null) return;

        if (!PanelRouter.Instance.GetPanelInfo(idPanel, out var foundPanel, out var overlayId))
            return;

        isActivePanel    = true;
        waitForKeyRelease = true;
        panel            = foundPanel;
        currentOverlayId = overlayId;

        if (!string.IsNullOrEmpty(currentOverlayId))
            gameManager.uiManager.ShowOverlay(currentOverlayId, true, hideOtherOverlays: false);

        gameManager.SetInputMode(InputMode.Settings);
        panel.Initialize(idPanel);
    }

    private void ClosePanel()
    {
        isActivePanel = false;
        panel.Accept();

        if (!string.IsNullOrEmpty(currentOverlayId))
            gameManager.uiManager.ShowOverlay(currentOverlayId, false);

        panel            = null;
        currentOverlayId = null;

        gameManager.SetState(GameState.Settings);
        gameManager.SetInputMode(InputMode.Settings);
    }

    // -------------------------------------------------------
    //  Выход из настроек
    // -------------------------------------------------------
    private void ExitSettings()
    {
        if (isActivePanel)
            ClosePanel();

        isPaused = false;
        gameManager.ReturnToMainMenu();
        if (gameManager.gameMode == GameMode.PlayerVsPlayer)
            gameManager.opponentManager.ReturnToMainMenu();
    }

    // -------------------------------------------------------
    //  Экшены
    // -------------------------------------------------------
    private void ExecuteAction(int actionId)
    {
        switch (actionId)
        {
            case 100:
                Zeroize(PrizeSystem.key_startsNul);
                screen.AcceptView();
                Debug.Log("Сброс статистики игр выполнен");
                break;

            case 101:
                Zeroize(PrizeSystem.key_prizesgivenNul);
                screen.AcceptView();
                Debug.Log("Сброс статистики призов выполнен");
                break;

            case 102:
                DifficultyManager.SyncChanceToMax();
                screen.AcceptView();
                Debug.Log("Сброс прогресса до суперприза");
                break;

            default:
                Debug.LogWarning($"Неизвестный actionId: {actionId}");
                break;
        }
    }

    private void ResetTimer()
    {
        unifiedTimer = 0f;
        screen.UpdateProgressBar(0f);
    }

    private void Zeroize(string key)
    {
        PlayerPrefs.SetInt(key, 0);
    }
}