using UnityEngine;
using UnityEngine.Events; // Required for the Event System

public class LightSwitch : MonoBehaviour, IInteractable
{
    [Header("Settings")]
    public Light[] linkedLight;
    public bool isLightOn = true;
    
    [Header("Audio")]
    public AudioSource audioSource;
    public AudioClip switchClickSound;
    public AudioClip malfunctionSound;

    [Header("Horror Mechanics")]
    [Range(0f, 1f)] public float malfunctionChance = 0.1f;
    
    // --- NEW EVENT SYSTEM ---
    [Header("Event System")]
    [Tooltip("If true, the Special Events below will fire on the first interaction.")]
    public bool enableSpecialEvents = false;

    [Tooltip("What happens the VERY FIRST time you turn the light OFF? (e.g. Phone Rings)")]
    public UnityEvent OnFirstSwitchOff;

    [Tooltip("What happens the VERY FIRST time you turn the light ON? (e.g. Phone Stops)")]
    public UnityEvent OnFirstSwitchOn;

    [Space(10)]
    [Range(0f, 100f)] public float subsequentEventChance = 2f; // 2% chance
    [Tooltip("What happens randomly after the first time? (e.g. Scary noise)")]
    public UnityEvent OnRandomEvent;

    // Track how many times we've flipped the switch
    private int flipCount = 0;
    private bool firstOffTriggered = false;
    private bool firstOnTriggered = false;

    void Start()
    {
        if (audioSource == null) audioSource = GetComponent<AudioSource>();
        UpdateLightState();
        if(GameManager.Instance != null) GameManager.Instance.RegisterSwitch(this);
    }

    public void Interact()
    {
        // 1. Malfunction Check
        if (Random.value < malfunctionChance)
        {
            PlaySound(malfunctionSound);
            return; 
        }

        // 2. Toggle Light
        isLightOn = !isLightOn;
        PlaySound(switchClickSound);
        UpdateLightState();
        
        if(GameManager.Instance != null) GameManager.Instance.CheckLights();

        // 3. HANDLE EVENTS
        HandleEvents();
    }

    void HandleEvents()
    {
        if (!enableSpecialEvents) return;

        // Logic: specific events for first time, random for later
        if (!isLightOn && !firstOffTriggered)
        {
            // First time turning OFF
            OnFirstSwitchOff.Invoke();
            firstOffTriggered = true;
        }
        else if (isLightOn && firstOffTriggered && !firstOnTriggered)
        {
            // First time turning back ON (after having turned it off)
            OnFirstSwitchOn.Invoke();
            firstOnTriggered = true;
        }
        else if (firstOffTriggered && firstOnTriggered)
        {
            // We have done the scripted part, now roll dice for random scares
            float roll = Random.Range(0f, 100f);
            if (roll < subsequentEventChance)
            {
                OnRandomEvent.Invoke();
            }
        }
    }

    public void ForceLightOn()
    {
        isLightOn = true;
        PlaySound(switchClickSound); 
        UpdateLightState();
    }

    void UpdateLightState()
    {
        foreach(var linkedLight in linkedLight)
        if(linkedLight != null) linkedLight.enabled = isLightOn;
    }

    void PlaySound(AudioClip clip)
    {
        if (audioSource != null && clip != null) audioSource.PlayOneShot(clip);
    }

    public string GetDescription()
    {
        return isLightOn ? "Turn <color=red>OFF</color>" : "Turn <color=green>ON</color>";
    }
}