using System.Collections.Generic;
using UnityEngine;
using BaseGames.Core;
using BaseGames.Core.Save;

namespace BaseGames.World.Map
{
    /// <summary>
    /// 地图自定义标记管理器（架构 15_MapShopModule §1.5）。
    /// 实现 ISaveable，通过 SaveManager 持久化玩家地图标记。
    /// MapPin/PinType 数据类定义在 SaveData.cs（BaseGames.Core.Save）中，避免循环依赖。
    /// </summary>
    public class MapPinManager : MonoBehaviour, ISaveable
    {
        private List<MapPin> _pins = new();

        public IReadOnlyList<MapPin> Pins => _pins;

        private void OnEnable()  => ServiceLocator.GetOrDefault<ISaveableRegistry>()?.Register(this);
        private void OnDisable() => ServiceLocator.GetOrDefault<ISaveableRegistry>()?.Unregister(this);

        // ── 公共 API ──────────────────────────────────────────────────────────

        public void AddPin(MapPin pin)
        {
            if (pin != null) _pins.Add(pin);
        }

        public void RemovePin(MapPin pin) => _pins.Remove(pin);

        /// <summary>便捷方法：用枚举类型创建并添加标记。</summary>
        public MapPin CreatePin(string roomId, float normX, float normY,
                                 PinType type = PinType.Marker, string note = "")
        {
            var pin = new MapPin
            {
                RoomId         = roomId,
                NormalizedPosX = normX,
                NormalizedPosY = normY,
                PinTypeInt     = (int)type,
                Note           = note,
            };
            AddPin(pin);
            return pin;
        }

        // ── ISaveable ─────────────────────────────────────────────────────────

        public void OnSave(SaveData data) => data.Map.Pins = _pins;
        public void OnLoad(SaveData data) => _pins = data.Map.Pins ?? new List<MapPin>();
    }
}