using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using TeamAAS.Motion.Models;

namespace TeamAAS.Motion.AdapterFactorys
{
    public class DevicePluginManager
    {
        private readonly Dictionary<string, IDeviceAdapterFactory> _factories = new();


        public Dictionary<string, IDeviceAdapterFactory> Factories => _factories;

        public DevicePluginManager()
        {
            // 1. 扫描当前 AppDomain 中所有程序集
            var factoryTypes = AppDomain.CurrentDomain.GetAssemblies()
            .SelectMany(a => a.GetTypes())
            .Where(t => typeof(IDeviceAdapterFactory).IsAssignableFrom(t)
                        && !t.IsInterface
                        && !t.IsAbstract);

            // 2. 实例化并注册到字典
            foreach ( var type in factoryTypes )
            {
                try
                {
                    var factory = (IDeviceAdapterFactory)Activator.CreateInstance(type);
                    if ( !_factories.ContainsKey(factory.Key) )
                    {
                        _factories.Add(factory.Key, factory);
                    }
                }
                catch ( Exception ex )
                {
                    // 记录日志：实例化失败
                    Console.WriteLine($"加载工厂 {type.Name} 失败: {ex.Message}");
                }
            }
        }


        /// <summary>
        /// 根据配置获取工厂，如果找不到则抛出异常或返回默认仿真
        /// </summary>
        public IDeviceAdapterFactory GetFactory(MotionDeviceConfig config)
        {
            if ( Factories.TryGetValue(config.AdapterKey, out var factory) )
                return factory;

            // 健壮性处理：未找到时，回退到仿真模式 或 抛出明确异常
            if ( Factories.TryGetValue("Simulated", out var fallback) )
            {
                Console.WriteLine($"警告：未找到适配器 '{config.AdapterKey}'，已切换至仿真模式");
                return fallback;
            }

            throw new NotSupportedException($"未注册的适配器类型: {config.AdapterKey}");
        }
    }
}