using System;
using UnityEngine;
#if ENABLE_INPUT_SYSTEM
using UnityEngine.InputSystem;
#endif

namespace NightclubArcadia.Player
{
    /// <summary>
    /// Receives pointer and camera-pan SendMessages from PlayerInput and
    /// exposes them as C# events for navigation and camera systems.
    /// </summary>
    [DefaultExecutionOrder(-100)]
    public sealed class PlayerPointerInput : MonoBehaviour
    {
        public Vector2 ScreenPosition { get; private set; }
        public bool IsPanning { get; private set; }

        public event Action Clicked;
        public event Action PanStarted;
        public event Action<Vector2> PanDelta;
        public event Action PanEnded;

#if ENABLE_INPUT_SYSTEM
        void OnPoint(InputValue value)
        {
            ScreenPosition = value.Get<Vector2>();
        }

        void OnClick(InputValue value)
        {
            if (value.isPressed)
            {
                Clicked?.Invoke();
            }
        }

        void OnCameraPan(InputValue value)
        {
            if (value.isPressed && !IsPanning)
            {
                IsPanning = true;
                PanStarted?.Invoke();
            }
            else if (!value.isPressed && IsPanning)
            {
                IsPanning = false;
                PanEnded?.Invoke();
            }
        }

        void OnPointerDelta(InputValue value)
        {
            if (IsPanning)
            {
                PanDelta?.Invoke(value.Get<Vector2>());
            }
        }
#endif
    }
}