using HStation.RevitDev.RevitDataExport.Parser;
using HStation.RevitDev.RevitDataExport.Utils;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;

namespace HStation.RevitDev.RevitDataExport.Utility
{
    public class ParserManager : Singleton<ParserManager>
    {
        private List<BaseParser> _parsers;
        public List<BaseParser> Parsers
        {
            get
            {
                if (_parsers == null)
                {
                    _parsers = CreateParsers();
                }
                return _parsers;
            }
        }
        private List<BaseParser> CreateParsers()
        {
            var parsers = new List<BaseParser>();
            // 加载程序集
            Assembly assembly = Assembly.GetExecutingAssembly();
            // 程序集扫描，获取全部规则检查者信息
            var allType = assembly.GetTypes().ToList();

            var types = allType.FindAll(type => type.IsSubclassOf(typeof(BaseParser))); 
         
            if (types == null || types.Count() == 0) { return parsers; }
            foreach (Type type in types)
            {
                var instance = Activator.CreateInstance(type) as BaseParser;
                parsers.Add(instance);
            }
            return parsers;
        }

        public BaseParser GetParser(string parserName)
        {
            foreach (var parser in _parsers)
            {
                if (parser.GetParserName().Equals(parserName))
                {
                    return parser;
                }
            }
            return null;
        }
    }
}