using Common.Models;
using Newtonsoft.Json;
using System;
using System.Reflection;

namespace Common
{
    public static class ToModeExtension
    {
        public static T ToModel<T>(this T model, T data)
            where T : class, new()
        {
            if (model == null)
                return null;
            if (data == null)
                return model;
            PropertyInfo[] propertyInfos = data.GetType().GetProperties();//获取实体下所有字段的属性
            PropertyInfo[] dtoproperty = model.GetType().GetProperties();
            for (int i = 0; i < propertyInfos.Length; i++)
            {
                for (int j = 0; j < dtoproperty.Length; j++)
                {
                    if (propertyInfos[i].Name == dtoproperty[j].Name)
                    {
                        var ss = (TypeEnum)Enum.Parse(typeof(TypeEnum), propertyInfos[i].PropertyType.Name);
                        var value = propertyInfos[i].GetValue(data);//获取该属性字段对应的值
                        if (value == null)
                            break;
                        switch (ss)
                        {
                            case TypeEnum.String:
                                if(!string.IsNullOrEmpty(value.ToString()))
                                    dtoproperty[j].SetValue(model, value);
                                break;
                            case TypeEnum.Int32:
                                if (propertyInfos[i].Name == "id")
                                {
                                    if (Convert.ToInt32(value) > 0)
                                        dtoproperty[j].SetValue(model, value);
                                }
                                else {
                                    if (Convert.ToInt32(value) >= 0)
                                        dtoproperty[j].SetValue(model, value);
                                }
                                break;
                            case TypeEnum.Boolean:
                                if (Convert.ToBoolean(value) == true)
                                    dtoproperty[j].SetValue(model, value);
                                break;
                            case TypeEnum.DateTime:
                                if (Convert.ToDateTime(value) > Convert.ToDateTime("1949/01/01 00:00:00"))
                                    dtoproperty[j].SetValue(model, value);
                                break;
                            case TypeEnum.Double: 
                                if (Convert.ToDouble(value) >= 0)
                                    dtoproperty[j].SetValue(model, value);
                                break;
                            case TypeEnum.Decimal:
                                if (Convert.ToDecimal(value) >= 0)
                                    dtoproperty[j].SetValue(model, value);
                                break;
                            default:
                                if (!string.IsNullOrEmpty(value.ToString()))
                                    dtoproperty[j].SetValue(model, value);
                                break;
                        }
                        break;
                    }
                }
            }
            return model;
        }

        public static T ToEntity<T>(this object model)
            where T : class, new()
        {
            try
            {
                if (model == null)
                    return null;
                T data = new T();
                Type t = typeof(T);
                PropertyInfo[] propertyInfos = t.GetProperties();//获取实体下所有字段的属性
                PropertyInfo[] dtoproperty = model.GetType().GetProperties();

                for (int j = 0; j < dtoproperty.Length; j++)
                {
                    for (int i = 0; i < propertyInfos.Length; i++)
                    {
                        if (propertyInfos[i].Name == dtoproperty[j].Name)
                        {
                            var value = dtoproperty[j].GetValue(model);//获取该属性字段对应的值
                            propertyInfos[i].SetValue(data, value);
                        }
                    }
                }
                return data;
            }
            catch (Exception e)
            {
                return null;
            }
           
        }
        
        #region object where

        public static string objectwhere(object parm)
        {
            string where = " n1>-1 ";
            if (parm != null)
            {
                foreach (PropertyInfo item in parm.GetType().GetProperties())
                {
                    where += $" and {item.Name}=@{item.Name} ";
                }
                if (!string.IsNullOrEmpty(where))
                    return " where " + where;
            }
            return " where " + where;
        }
        #endregion





    }



}