using UnityEngine;
using System;

/// <summary>
/// Represents an interactable object that can respond to tap input events.
/// </summary>
public class Interactable : MonoBehaviour, ITouchInputConsumer
{
    public event Action StartedInteraction;
    public event Action<bool> InteractionComplete;

    private ObjectiveStepBehaviour stepBehaviour;

    void Awake()
    {
        stepBehaviour = GetComponent<ObjectiveStepBehaviour>();
    }

    /// <summary>
    /// Handles tap input. Triggers interaction logic.
    /// </summary>
    public void OnTap(Vector2 worldPosition)
    {
        Debug.Log($"[Interactable] OnTap at {worldPosition} on {gameObject.name}");
        StartedInteraction?.Invoke();
    }

    /// <summary>
    /// No hold behavior for interactables.
    /// </summary>
    public void OnHoldStart(Vector2 worldPosition) { }
    public void OnHoldMove(Vector2 worldPosition) { }
    public void OnHoldEnd(Vector2 worldPosition) { }

    /// <summary>
    /// Called when the follower arrives at this interactable.
    /// </summary>
    public bool OnFollowerArrived(FollowerController follower)
    {
        // Check if step is locked here
        if (stepBehaviour != null && !stepBehaviour.IsStepUnlocked())
        {
            DebugUIMessage.Show("Item is not unlocked yet");
            Debug.Log("[Puzzles] Tried to interact with locked step: " + gameObject.name);
            InteractionComplete?.Invoke(false);
            return false;
        }
        var requirements = GetComponents<InteractionRequirementBase>();
        if (requirements.Length == 0)
        {
            InteractionComplete?.Invoke(true);
            return true;
        }
        bool anySuccess = false;
        foreach (var req in requirements)
        {
            if (req.TryInteract(follower))
            {
                anySuccess = true;
                break;
            }
        }
        InteractionComplete?.Invoke(anySuccess);
        if (!anySuccess)
        {
            Debug.Log($"[Interactable] No interaction requirements succeeded for {gameObject.name}");
            // Optionally trigger a default failure event or feedback here
        }
        return anySuccess;
    }
}