using System.Collections.Generic;
using System.Globalization;

namespace BaseGames.AI
{
    /// <summary>
    /// 具名、可枚举的 AI 临时值容器（每敌人实例一份）。
    /// 保留"具名"是为了让调试器/MCP 能通用枚举当前值。
    /// </summary>
    public sealed class Blackboard
    {
        readonly Dictionary<string, object> _values = new Dictionary<string, object>();

        public void Set<T>(string key, T value) => _values[key] = value;

        public T Get<T>(string key)
            => _values.TryGetValue(key, out var v) && v is T t ? t : default;

        public bool Has(string key) => _values.ContainsKey(key);

        public IReadOnlyCollection<string> Keys => _values.Keys;

        public void Clear() => _values.Clear();

        /// <summary>供调试器/MCP 自省：key → 值的字符串表示。</summary>
        public Dictionary<string, string> Snapshot()
        {
            var result = new Dictionary<string, string>(_values.Count);
            foreach (var kv in _values)
            {
                result[kv.Key] = kv.Value is System.IFormattable f
                    ? f.ToString(null, CultureInfo.InvariantCulture)
                    : kv.Value?.ToString() ?? "null";
            }
            return result;
        }
    }
}