using UnityEngine;
using BaseGames.Core;
using BaseGames.Core.Events;
using BaseGames.Core.Save;

namespace BaseGames.World
{
    public class SavePoint : MonoBehaviour, IInteractable, ISaveable
    {
        [Header("Config")]
        [SerializeField] private string _savePointId;
        [SerializeField] private bool   _restoreSpring = true;

        [Header("Event Channels")]
        [SerializeField] private StringEventChannelSO _onSavePointActivated;
        [SerializeField] private VoidEventChannelSO   _onFastTravelOpen;

        private bool _isActivated;

        // ── IInteractable ──────────────────────────────────────────────────────
        public bool   CanInteract    => true;
        public string InteractPrompt => _isActivated ? "休息" : "激活";

        public void Interact(Transform player)
        {
            _isActivated = true;
            var restorer = player.GetComponentInChildren<IRestoreOnSave>();
            if (restorer != null)
            {
                restorer.FullRestore();
                if (_restoreSpring) restorer.RestoreSpring();
            }

            _onSavePointActivated?.Raise(_savePointId);
            _onFastTravelOpen?.Raise();
        }

        public void OnPlayerEnterRange(Transform player) { }
        public void OnPlayerExitRange() { }

        // ── 存档集成 ────────────────────────────────────────────────────────────
        public bool IsActivated => _isActivated;
        public void SetActivated(bool val) => _isActivated = val;

        public void OnSave(SaveData data)
        {
            if (_isActivated && !string.IsNullOrEmpty(_savePointId)
                && !data.World.ActivatedSavePoints.Contains(_savePointId))
                data.World.ActivatedSavePoints.Add(_savePointId);
        }

        public void OnLoad(SaveData data)
        {
            _isActivated = !string.IsNullOrEmpty(_savePointId)
                && data.World.ActivatedSavePoints.Contains(_savePointId);
        }
    }
}