using System.Collections;
using Logging;
using TMPro;
using UnityEngine;

namespace Base
{
    public class Launcher : MonoBehaviour
    {
        public Gradient progressBar; // 渐变色条
        public TMP_Text describeText; // 描述文本

        private float _currentProgress = 0f; // 当前进度
        private float duration = 0.5f; // 过渡时间

        private string[] _loadingSteps =
        {
            "初始化日志", "正在载入定义", "正在加载图片资源", "正在切割瓦片", "正在加载区分派系",
            "正在加载物品"
        };

        public float progress
        {
            set
            {
                _currentProgress = value;
                if (value < 0.5f)
                {
                    progressBar.color2 = Color.Lerp(Color.black, Color.white, value * 2);
                }
                else
                {
                    progressBar.color2 = Color.white;
                    progressBar.color1 = Color.Lerp(Color.black, Color.white, (value - 0.5f) * 2);
                }
                progressBar.Refresh();
            }
        }

        private void Start()
        {
            StartCoroutine(LoadAllManagers());
        }

        private IEnumerator LoadAllManagers()
        {
            for (var i = 0; i < _loadingSteps.Length; i++)
            {
                // 更新描述文本
                describeText.text = _loadingSteps[i];

                // 获取当前阶段的目标进度
                var targetProgress = (float)(i + 1) / _loadingSteps.Length;

                // 平滑过渡到下一个阶段
                yield return SmoothTransitionTo(targetProgress);

                // 初始化对应的管理器
                switch (i)
                {
                    case 0:
                        UnityLogger.Init();
                        break;
                    case 1:
                        Managers.DefineManager.Instance.Init();
                        break;
                    case 2:
                        Managers.PackagesImageManager.Instance.Init();
                        break;
                    case 3:
                        Managers.TileManager.Instance.Init();
                        break;
                    case 4:
                        Managers.AffiliationManager.Instance.Init();
                        break;
                    case 5:
                        Managers.ItemResourceManager.Instance.Init();
                        break;
                }
            }

            // 加载完成后的处理
            describeText.text = "加载完成！";
            progress = 1f;
        }

        private IEnumerator SmoothTransitionTo(float targetProgress)
        {
            var startProgress = _currentProgress;
            var elapsedTime = 0f;

            while (elapsedTime < duration)
            {
                elapsedTime += Time.deltaTime;
                var t = Mathf.SmoothStep(0f, 1f, elapsedTime / duration); // 使用 SmoothStep 实现平滑过渡
                progress = Mathf.Lerp(startProgress, targetProgress, t);
                yield return null;
            }

            // 确保最终进度达到目标值
            progress = targetProgress;
        }
    }
}