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

namespace CoderEngine
{
    public class AjaxCodeWrite
    {
        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";
        }

        /// <summary>
        /// 倍数缩进
        /// </summary>
        /// <param name="Number"></param>
        public string TabstrForNumber(int Number)
        {
            string str = "";

            if (Number < 0)
                Number = 0;
            for (int i = 0; i < Number; i++)
            {
                str += tabstr;
            }
            return str;
        }

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


        
        public void ModelToAjaxCodeWriter(TypeMode TopMode)
        {
            CoderAddLine("");
            CoderAddLine("//生成Ajax请求后解析返回值的js代码");
            CoderAddLine("success: function(data) {//请求完成");
            CoderAddLine(tabstr + "var ob =  JSON.parse(data.Value);//序列化Value字符串为json对象");
            //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);
                AjaxCodeDownRecursion(TopMode,"",1);
            }
            CoderAddLine("}");
        }

        public void AjaxCodeDownRecursion(TypeMode TopMode,string ParentCode, int TabNumber)
        {

            if (ParentCode == null || ParentCode == "")
                ParentCode = "ob";


            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);


                CoderAddLine(TabstrForNumber(TabNumber-1) + "//循环取内嵌集合"+ ParentCode+ "数据");
                CoderAddLine(TabstrForNumber(TabNumber-1) + "for(i" + TabNumber + " = 0;i" + TabNumber + " < " + ParentCode+ ".lenght;i" + TabNumber + "++){");
                foreach (var tl in TopMode.TypeList)
                {
                    if (tl.MemberType.Name == "List`1")
                    {
                        CoderAddLine(TabstrForNumber(TabNumber) + ParentCode + "[i"+ TabNumber + "]." + tl.Name + ";//集合 " + CSharpToJavaTypeName(tl.MemberType));
                        CoderAddLine(TabstrForNumber(TabNumber) + ParentCode + "[i"+ TabNumber + "]." + tl.Name + ".lenght;//集合" + tl.Name + "的成员数量");

                        if (tl.TypeList != null && tl.TypeList.Count > 0)
                        {
                            CoderAddLine("");


                            ParentCode = ParentCode + "[i" + TabNumber + "]";
                            string ParentCodeStr = "";
                            if (ParentCode != null)
                                ParentCodeStr = ParentCode + "." + tl.Name;
                            else
                                ParentCodeStr = "ob." + tl.Name;
                            AjaxCodeDownRecursion(tl, ParentCodeStr, TabNumber + 1);
                        }
                    }
                    else
                    {
                        CoderAddLine(TabstrForNumber(TabNumber) + ParentCode + "[i" + TabNumber + "]." + tl.Name + ";//成员参数  " + CSharpToJavaTypeName(tl.MemberType));
                    }
                }

                CoderAddLine(TabstrForNumber(TabNumber-1) + "}");
            }
            else
            {
                ClassName = TopMode.MemberType.Name;

                foreach (var tl in TopMode.TypeList)
                {
                    if (tl.MemberType.Name == "List`1")
                    {
                        CoderAddLine(TabstrForNumber(TabNumber) + ParentCode + "." + tl.Name + ";//集合 " + CSharpToJavaTypeName(tl.MemberType));
                        CoderAddLine(TabstrForNumber(TabNumber) + ParentCode + "." + tl.Name + ".lenght;//集合" + tl.Name + "的成员数量");

                        if (tl.TypeList != null && tl.TypeList.Count > 0)
                        {
                            CoderAddLine("");

                            string ParentCodeStr = "";
                            if (ParentCode != null)
                                ParentCodeStr = ParentCode + "." + tl.Name;
                            else
                                ParentCodeStr = "ob." + tl.Name;

                            AjaxCodeDownRecursion(tl, ParentCodeStr, TabNumber + 1);
                        }
                    }
                    else
                    {
                        CoderAddLine(TabstrForNumber(TabNumber) + ParentCode + "."+ tl.Name + ";//成员参数  " + CSharpToJavaTypeName(tl.MemberType));
                    }
                }

            }
            



        }


        /// <summary>
        /// 转换成JS代码描述
        /// </summary>
        /// <returns></returns>
        public string CSharpToJavaTypeName(Type myType)
        {
            var oneinfo = CSharpToJSTypeItem.Where(w => w.Key == myType.Name).FirstOrDefault();
            if (oneinfo.Value != null)
            {
                return "类型为 " + oneinfo.Value;
            }
            else
            {
                if (myType.Name == "List`1")
                {
                    return "";
                }
                else if (myType.Name == "Nullable`1")
                {
                    var SonParamName = myType.FullName.Substring(myType.FullName.IndexOf("[") + 2);
                    SonParamName = SonParamName.Substring(0, SonParamName.IndexOf(","));
                    //string var =  SonParamName.Substring(SonParamName.LastIndexOf('.') + 1);
                    string SonParamFromAssemblyName = SonParamName.Substring(0, SonParamName.IndexOf('.'));


                    //貌似反射加载System是不行的？是吗
                    //Type PerentType = System.GetType(SonParamName);


                    return "";
                }
                else
                    return "类型为 " + "string";
            }
        }
        
        /// <summary>
        /// C#和JS代码对照表
        /// </summary>
        public System.Collections.Generic.Dictionary<string, string> CSharpToJSTypeItem =
            new Dictionary<string, string>() {
                { "int","int"},
                { "Int16","int"},
                { "Int32","int"},
                { "Int64","int"},
                { "long","long"},
                { "float","float"},
                { "double","double"},
                { "boolean","boolean"},
                { "string","string"},
                { "DateTime","时间格式形如 1999-99-99 10:10:10"},
            };

    }
}