using System.Collections.Generic;
using GeometryTD.CustomEvent;
using TMPro;
using UnityEngine;

namespace GeometryTD.UI
{
    public class SellArea : MonoBehaviour
    {
        [SerializeField] private Transform _content;
        [SerializeField] private RepoItem _itemTemplate;
        [SerializeField] private TowerRepoItem _towerItemTemplate;
        [SerializeField] private TMP_Text _totalPrice;

        private readonly List<RepoItem> _activeComponentItems = new List<RepoItem>();
        private readonly List<TowerRepoItem> _activeTowerItems = new List<TowerRepoItem>();
        private SellAreaContext _context;

        public void OnInit(SellAreaContext context)
        {
            OnReset();
            _context = context;

            if (_totalPrice != null)
            {
                _totalPrice.text = context?.TotalPriceText ?? string.Empty;
            }

            if (context == null || _content == null)
            {
                return;
            }

            if (context.ComponentItems != null)
            {
                foreach (RepoItemContext itemContext in context.ComponentItems)
                {
                    if (itemContext == null || _itemTemplate == null)
                    {
                        continue;
                    }

                    RepoItem item = Instantiate(_itemTemplate, _content);
                    item.gameObject.SetActive(true);
                    item.OnInit(itemContext);
                    _activeComponentItems.Add(item);
                }
            }

            if (context.TowerItems != null)
            {
                foreach (TowerRepoItemContext itemContext in context.TowerItems)
                {
                    if (itemContext == null || _towerItemTemplate == null)
                    {
                        continue;
                    }

                    TowerRepoItem item = Instantiate(_towerItemTemplate, _content);
                    item.gameObject.SetActive(true);
                    item.OnInit(itemContext);
                    _activeTowerItems.Add(item);
                }
            }
        }

        public void OnReset()
        {
            for (int i = _activeComponentItems.Count - 1; i >= 0; i--)
            {
                RepoItem item = _activeComponentItems[i];
                if (item != null)
                {
                    Destroy(item.gameObject);
                }
            }

            for (int i = _activeTowerItems.Count - 1; i >= 0; i--)
            {
                TowerRepoItem item = _activeTowerItems[i];
                if (item != null)
                {
                    Destroy(item.gameObject);
                }
            }

            _activeComponentItems.Clear();
            _activeTowerItems.Clear();
            _context = null;

            if (_totalPrice != null)
            {
                _totalPrice.text = string.Empty;
            }
        }

        public void OnCancelButtonClick()
        {
            GameEntry.Event.Fire(this, RepoSellCancelRequestedEventArgs.Create());
        }

        public void OnConfirmButtonClick()
        {
            if (_context == null || !_context.CanConfirmSell)
            {
                return;
            }

            GameEntry.Event.Fire(this, RepoSellConfirmRequestedEventArgs.Create());
        }
    }
}