using System.Collections;
using UnityEngine;

namespace AibisDream.SaveSystem
{
    /// <summary>
    /// sections["macro"]：章节 TalkSceneSO 与 YarnProject 绑定。
    /// RestoreOrder=30，在场景与环境就绪后设置 GameManager 并 LoadDialog（不 Start 节点，锚点由 RestoreAnchor 负责）。
    /// </summary>
    public class MacroSnapshotProvider : ISnapshotProvider
    {
        public string SaveId => SnapshotProviderIds.Macro;
        public int RestoreOrder => 30;

        public object Capture()
        {
            var gameManager = GameManager.Instance;
            var dialog = DialogController.Instance;
            var yarnProject = dialog?.DialogueRunner?.YarnProject;

            return new MacroSnapshotDto
            {
                sceneSoName = gameManager != null ? gameManager.GetSceneSoName() : null,
                yarnProjectId = yarnProject != null ? yarnProject.name : null
            };
        }

        public IEnumerator Restore(object dto)
        {
            if (dto is not MacroSnapshotDto macro)
            {
                yield break;
            }

            if (!string.IsNullOrEmpty(macro.sceneSoName))
            {
                GameManager.Instance.SetSceneSoByName(macro.sceneSoName);
            }

            if (!string.IsNullOrEmpty(macro.yarnProjectId))
            {
                var sceneSo = GameManager.Instance.GetCurrentTalkSceneSo();
                if (sceneSo?.yarnProject != null && sceneSo.yarnProject.name == macro.yarnProjectId)
                {
                    DialogController.Instance.LoadDialog(sceneSo.yarnProject);
                }
                else
                {
                    Debug.LogWarning($"[MacroSnapshotProvider] 无法匹配 YarnProject: {macro.yarnProjectId}");
                }
            }

            yield break;
        }
    }
}