using UnityEngine;
using UnityEngine.InputSystem;

/// <summary>
/// Финальный терминал аварийной эвакуации на 2-м уровне.
/// При взаимодействии по клавише [E] запускает процедуру открытия эвакуационного шлюза и победный экран.
/// </summary>
public class FinalExitTerminal : MonoBehaviour
{
    [Header("Настройки")]
    public float interactionDistance = 3.5f;
    public Light statusLight;
    public MeshRenderer screenRenderer;

    private bool isActivated = false;
    private static Transform cachedPlayer;

    private void Start()
    {
        LocatePlayer();
        if (statusLight != null)
        {
            statusLight.color = new Color(1f, 0.4f, 0.1f); // Оранжевый аварийный
        }

        var col = GetComponent<Collider>();
        if (col == null)
        {
            var sc = gameObject.AddComponent<SphereCollider>();
            sc.isTrigger = true;
            sc.radius = interactionDistance;
        }
    }

    private Transform LocatePlayer()
    {
        if (cachedPlayer != null) return cachedPlayer;
        var pm = Object.FindAnyObjectByType<PlayerMovement>();
        if (pm != null) { cachedPlayer = pm.transform; return cachedPlayer; }
        var pTag = GameObject.FindWithTag("Player");
        if (pTag != null) { cachedPlayer = pTag.transform; return cachedPlayer; }
        return null;
    }

    private void Update()
    {
        if (isActivated) return;
        if (Time.timeScale == 0f) return;

        Transform player = LocatePlayer();
        if (player == null) return;

        float dist = Vector3.Distance(transform.position, player.position);
        if (dist <= interactionDistance)
        {
            var keyboard = Keyboard.current;
            if (keyboard != null && (keyboard.eKey.wasPressedThisFrame || keyboard.enterKey.wasPressedThisFrame))
            {
                ActivateExit();
            }
        }
    }

    private void OnTriggerStay(Collider other)
    {
        if (isActivated) return;
        if (Time.timeScale == 0f) return;

        if (other.CompareTag("Player") || other.GetComponentInParent<PlayerMovement>() != null)
        {
            var keyboard = Keyboard.current;
            if (keyboard != null && (keyboard.eKey.wasPressedThisFrame || keyboard.enterKey.wasPressedThisFrame))
            {
                ActivateExit();
            }
        }
    }

    public void ActivateExit()
    {
        if (isActivated) return;

        // Проверяем, жив ли босс
        var boss = Object.FindAnyObjectByType<TitanBossAI>();
        if (boss != null && boss.CurrentState != TitanBossAI.BossState.Dead)
        {
            GameAudioSynthesizer.PlayErrorCode();
            Debug.Log("<color=red>[FinalExit] ОШИБКА: Шлюз заблокирован протоколом карантина! Устраните Альфа-Мутанта.</color>");
            return;
        }

        isActivated = true;

        if (statusLight != null)
        {
            statusLight.color = new Color(0.2f, 1f, 0.4f); // Зеленый
            statusLight.intensity = 4.0f;
        }

        GameAudioSynthesizer.PlaySuccessChime();

        var victoryUI = Object.FindAnyObjectByType<FinalVictoryUI>(FindObjectsInactive.Include);
        if (victoryUI != null)
        {
            victoryUI.ShowVictoryScreen();
        }
        else
        {
            Debug.Log("<color=green>[FinalExit] Эвакуационный шлюз открыт! Игра завершена!</color>");
        }
    }
}