using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using Newtonsoft.Json.Linq;

namespace NBC
{
    /// <summary>
    /// 配置表帮助类
    /// </summary>
    public static class ConfigTableHelper
    {
        private static readonly Dictionary<Type, IConfigContext> _dictionary = new Dictionary<Type, IConfigContext>();
        
        /// <summary>
        /// 初始化ConfigTableHelper
        /// </summary>
        public static void Initialize(string json)
        {
            var jsonObj = JObject.Parse(json);
            Dictionary<string, JArray> tokens = new();
            foreach (var item in jsonObj)
            {
                try
                {
                    var name = item.Key;
                    var value = item.Value;
                    if (value is JArray jArray)
                    {
                        tokens[name] = jArray;
                    }
                }
                catch (Exception e)
                {
                    Log.Error($"读表异常，请检查，name={item.Key} ex={e}");
                }
            }

            //反射获取所有IConfigTable的非抽象类
            var tableTypes = GetAllConfigTableTypes();
            foreach (var type in tableTypes)
            {
                var name = type.Name;
                if (tokens.TryGetValue(name, out var jArray))
                {
                    // 通过反射调用 ParseJson 方法
                    var parseMethod = type.GetMethod("ParseJson", BindingFlags.Public | BindingFlags.Static);
                    parseMethod?.Invoke(null, new object[] { jArray });
                }
            }

        }

        public static ConfigContext<T> Table<T>() where T : IConfigTable
        {
            var type = typeof(T);
            if (_dictionary.TryGetValue(type, out var context))
            {
                return context as ConfigContext<T>;
            }

            var jsonContext = new ConfigContext<T>();
            _dictionary[type] = jsonContext;
            return jsonContext;
        }

        public static List<T> ParseLine<T>(JArray arr) where T : IConfigTable, new()
        {
            List<T> list = new List<T>();
            foreach (var jToken in arr)
            {
                T instance = jToken.ToObject<T>();

                if (instance != null)
                {
                    list.Add(instance);
                }
            }

            var context = Table<T>();
            context.Association(list);

            return list;
        }


        /// <summary>
        /// 获取所有实现了 IConfigTable 接口的非抽象类
        /// </summary>
        /// <returns>所有非抽象的配置对象类</returns>
        private static List<Type> GetAllConfigTableTypes()
        {
            var types = new List<Type>();
            var interfaceType = typeof(IConfigTable);

            // 遍历当前程序集中的所有类型
            foreach (var assembly in AppDomain.CurrentDomain.GetAssemblies())
            {
                foreach (var type in assembly.GetTypes())
                {
                    // 检查是否实现了 IConfigTable 接口，并且不是抽象类
                    if (interfaceType.IsAssignableFrom(type) && !type.IsAbstract && !type.IsInterface)
                    {
                        types.Add(type);
                    }
                }
            }

            return types;
        }
    }
}