using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace CoderEngine
{
    public class CSharpCodeWrite
    {
        private string CodeStr = "";

        /// <summary>
        /// 一个代码缩进
        /// </summary>
        private string tabstr = "    ";

        /// <summary>
        /// 逐行添加代码
        /// </summary>
        /// <param name="codeline"></param>
        /// <returns></returns>
        public void CoderAddLine(string CodeLine)
        {
            CodeStr += CodeLine + "\n";
        }

        public string ModelToJavaCode(string _AssemblyName, string _TypeName)
        {
            TypeMode tm = new _ModleReader().ModelCheck(_AssemblyName, _TypeName);
            ModelToCSCodeWriter(tm);
            return CodeStr;
        }

        public void ModelToCSCodeWriter(TypeMode TopMode)
        {
            //如果有代码嵌套的下级类 在本类外 写入新的类
            if (TopMode.TypeList != null && TopMode.TypeList.Count > 0)
            {
                CoderAddLine(tabstr);
                CSCodeDownRecursion(TopMode);
            }
        }


        public void CSCodeDownRecursion(TypeMode TopMode)
        {
            string ClassName = "";
            //如果自己就是集合类型 则取类型下名字
            if (TopMode.MemberType.Name == "List`1")
            {
                //FullName的值为 "System.Collections.Generic.List`1[[  --集合内嵌类型名称--, CoderEngine, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]"
                //其中包含内嵌List的名称 我们要将其取出  得到的值例如 “程序集.*.*类型”
                var SonParamName = TopMode.MemberType.FullName.Substring(TopMode.MemberType.FullName.IndexOf("[") + 2);
                SonParamName = SonParamName.Substring(0, SonParamName.IndexOf(","));
                ClassName = SonParamName.Substring(SonParamName.LastIndexOf(".") + 1);
            }
            else
                ClassName = TopMode.MemberType.Name;
            
            CoderAddLine("public class " + ClassName + " {");
            foreach (var tl in TopMode.TypeList)
            {
                CoderAddLine(tabstr + "public " + ToTypeName(tl.MemberType) + " " + tl.Name + " { get; set; };");
            }

            CoderAddLine("}");


            foreach (var tl in TopMode.TypeList)
            {
                if (tl.MemberType.Name == "List`1")
                {
                    if (tl.TypeList != null && tl.TypeList.Count > 0)
                    {
                        CoderAddLine("");
                        ModelToCSCodeWriter(tl);
                    }
                }

            }

        }

        /// <summary>
        /// 类型处理
        /// </summary>
        /// <returns></returns>
        public string ToTypeName(Type myType)
        {
            if (myType.Name == "List`1")
            {
                var SonParamName = myType.FullName.Substring(myType.FullName.IndexOf("[") + 2);
                SonParamName = SonParamName.Substring(0, SonParamName.IndexOf(","));
                return "List<" + SonParamName.Substring(SonParamName.LastIndexOf('.') + 1) + ">";
            }
            else if (myType.Name == "Nullable`1")
            {
                var SonParamName = myType.FullName.Substring(myType.FullName.IndexOf("[") + 2);
                SonParamName = SonParamName.Substring(0, SonParamName.IndexOf(","));
                return "Nullable<" + SonParamName.Substring(SonParamName.LastIndexOf('.') + 1) + ">";
            }
            else
                return myType.Name;
        }

        


    }
}