using System.IO;
using System.Linq;
using TMPro;
using UnityEngine;
using UnityEngine.UI;

namespace AibisDream
{
    public class SaveFileUIController : MonoBehaviour
    {
        private static readonly string SaveFilePath = Application.streamingAssetsPath + "/SaveFiles";

        #region 索引
        public Button buttonPrefab;
        public Transform buttonParent;
        public Button returnButton;
        #endregion

        private void Start()
        {
            returnButton.onClick.AddListener(HideSaveFileUI);
        }

        public void ShowSaveFileUI()
        {
            // 清空旧按钮
            foreach (Transform child in buttonParent)
            {
                Destroy(child.gameObject);
            }

            // 加载存档文件
            string[] saveFiles = Directory.GetFiles(SaveFilePath, "*.json");
            var orderedSaveFiles = saveFiles.OrderByDescending(item => item).ToArray();
            foreach (var saveFile in orderedSaveFiles)
            {
                var button = Instantiate(buttonPrefab, buttonParent);
                button.GetComponentInChildren<TMP_Text>().text = Path.GetFileNameWithoutExtension(saveFile);
                button.onClick.AddListener(() => OnSaveFileSelected(saveFile));
            }

            gameObject.SetActive(true);
        }
        
        private void OnSaveFileSelected(string saveFileName)
        {
            // 隐藏UI
            gameObject.SetActive(false);
            // 开始游戏
            // GameLoopManager.Instance.StartWithSaveFile(saveFileName);
        }

        private void HideSaveFileUI()
        {
            gameObject.SetActive(false);
        }
    }
}