using GeometryTD.CustomEvent;
using TMPro;
using UnityEngine;

namespace GeometryTD.UI
{
    public class EventOptionItem : MonoBehaviour
    {
        [SerializeField] private TMP_Text _optionText;

        private static readonly Color SelectableTextColor = Color.white;
        private static readonly Color BlockedTextColor = new Color(0.75f, 0.75f, 0.75f, 1f);

        private int _optionIndex;
        private bool _isSelectable;
        private CommonButton _commonButton;

        private void Awake()
        {
            _commonButton = GetComponent<CommonButton>();
        }

        public void OnInit(EventOptionItemContext context)
        {
            if (context == null)
            {
                OnReset();
                gameObject.SetActive(false);
                return;
            }

            _optionIndex = context.OptionIndex;
            _isSelectable = context.IsSelectable;
            if (_optionText != null)
            {
                _optionText.text = BuildDisplayText(context);
                _optionText.color = _isSelectable ? SelectableTextColor : BlockedTextColor;
            }

            if (_commonButton != null)
            {
                _commonButton.Interactive = _isSelectable;
            }

            gameObject.SetActive(!string.IsNullOrEmpty(context.OptionText));
        }

        public void OnReset()
        {
            _optionIndex = -1;
            _isSelectable = false;
            if (_optionText != null)
            {
                _optionText.text = string.Empty;
                _optionText.color = SelectableTextColor;
            }

            if (_commonButton != null)
            {
                _commonButton.Interactive = true;
            }
        }

        public void OnClick()
        {
            if (_optionIndex < 0 || !_isSelectable)
            {
                return;
            }

            GameEntry.Event.Fire(this, EventOptionItemSelectedEventArgs.Create(_optionIndex));
        }

        private static string BuildDisplayText(EventOptionItemContext context)
        {
            string optionText = context.OptionText ?? string.Empty;
            if (context.IsSelectable || string.IsNullOrEmpty(context.BlockedReason))
            {
                return optionText;
            }

            return $"{optionText}\n<size=75%>{context.BlockedReason}</size>";
        }
    }
}