using System;
using System.Collections.Generic;
using System.Linq;
using TMPro;
using UnityEngine;
using UnityEngine.EventSystems;
using XRLib.UI;

namespace Studio.UI
{
    public class ProjectTemplateDropdown : UIBase
    {
        private GameObject optionItemPrefab;

        private RectTransform TemplateDropdown;
        private RectTransform Content;
        public TMP_InputField InputField_ProjectTemplate;

        private List<string> options = new();
        private List<GameObject> activeOptionItems = new List<GameObject>();

        public enum EType
        {
            Test1,
            Test2,
            Test3,
            Test4,
            Test5,
            Test6,
            Test7,
        }

        public override void AfterAwake()
        {
            optionItemPrefab = Resources.Load<GameObject>("Prefabs/UI/PRF_QuickStartItem");
            InputField_ProjectTemplate.onValueChanged.AddListener(FilteringOption);
            InputField_ProjectTemplate.onSelect.AddListener(ShowDropdown);

            HideDropdown();
        }

        private void Start()
        {
            CreateDropdown();
        }

        private void ShowDropdown(string input)
        {
            TemplateDropdown.gameObject.SetActive(true);
        }

        private void HideDropdown()
        {
            TemplateDropdown.gameObject.SetActive(false);
        }

        private void CreateDropdown()
        {
            ClearDropdownItems();

            options = Enum.GetNames(typeof(EType)).ToList();
            foreach (string option in options)
            {
                CreateOption(option);
            }
        }

        private void CreateOption(string text)
        {
            UI_QuickStartItem item = Instantiate(optionItemPrefab, Content).GetComponent<UI_QuickStartItem>();
            item.Init(text, () => OnClickOptionItem(text));

            activeOptionItems.Add(item.gameObject);
        }

        private void OnClickOptionItem(string text)
        {
            InputField_ProjectTemplate.text = text;
            HideDropdown();
            EventSystem.current.SetSelectedGameObject(null);
        }

        private void FilteringOption(string input)
        {
            ClearDropdownItems();

            foreach (string option in options)
            {
                if (option.ToLower().Contains(input.ToLower()))
                {
                    CreateOption(option);
                }
            }

            TemplateDropdown.gameObject.SetActive(true);
        }

        private void ClearDropdownItems()
        {
            foreach (GameObject item in activeOptionItems)
            {
                Destroy(item);
            }

            activeOptionItems.Clear();
        }
    }
}