using FlowScope.UI;
using UnityEngine;
using UnityEngine.UI;

namespace FlowScope.Samples.MainMenuP0
{
    [UIPanel("hud", "FlowScope/Samples/MainMenuP0/MainMenuPanel")]
    public sealed class MainMenuPanel : UIPanelBase<MainMenuViewModel>
    {
        [SerializeField] private Text goldText;
        [SerializeField] private Button incrementButton;

        public void Configure(Text goldLabel, Button incrementGoldButton)
        {
            goldText = goldLabel;
            incrementButton = incrementGoldButton;
        }

        protected override void OnBind(MainMenuViewModel viewModel)
        {
            if (goldText == null)
            {
                goldText = GetComponentInChildren<Text>(true);
            }

            if (incrementButton == null)
            {
                incrementButton = GetComponentInChildren<Button>(true);
            }

            UpdateGold(viewModel.Gold.Value);
            viewModel.GoldChanged += UpdateGold;
            if (incrementButton != null)
            {
                incrementButton.onClick.AddListener(viewModel.IncrementGold);
            }
        }

        public override void Unbind()
        {
            if (ViewModel != null)
            {
                ViewModel.GoldChanged -= UpdateGold;
            }

            if (incrementButton != null)
            {
                incrementButton.onClick.RemoveAllListeners();
            }

            base.Unbind();
        }

        private void UpdateGold(int value)
        {
            if (goldText != null)
            {
                goldText.text = value.ToString();
            }
        }
    }
}