using System.Collections.Generic;
using System.Data;
using System.Text.Encodings.Web;
using System.Text.Json;
using System.Text.Unicode;
using Znyc.Cloudcar.Admin.Commons.Helpers;

namespace Znyc.Cloudcar.Admin.Commons.Json
{
    /// <summary>
    ///     JSON序列化、反序列化扩展类。
    /// </summary>
    public static class JsonHelper
    {
        /// <summary>
        ///     对象序列化成JSON字符串。
        /// </summary>
        /// <param name="obj">序列化对象</param>
        /// <returns></returns>
        public static string ToJson(this object obj)
        {
            JsonSerializerOptions options = new JsonSerializerOptions
            {
                Encoder = JavaScriptEncoder.Create(UnicodeRanges.All),
                WriteIndented = true,
                PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
                AllowTrailingCommas = true
            };
            //设置时间格式
            options.Converters.Add(new DateTimeJsonConverter());
            options.Converters.Add(new DateTimeNullableConverter());
            //设置bool获取格式
            options.Converters.Add(new BooleanJsonConverter());
            //设置数字
            options.Converters.Add(new IntJsonConverter());
            options.PropertyNamingPolicy = new UpperFirstCaseNamingPolicy();
            options.PropertyNameCaseInsensitive = true; //忽略大小写
            //JsonSerializerOptions options = new JsonSerializerOptions()
            //{
            //    WriteIndented = true,                                   //格式化json字符串
            //    AllowTrailingCommas = true,                             //可以结尾有逗号
            //    //IgnoreNullValues = true,                              //可以有空值,转换json去除空值属性
            //    IgnoreReadOnlyProperties = true,                        //忽略只读属性
            //    PropertyNameCaseInsensitive = true,                     //忽略大小写
            //    Encoder = JavaScriptEncoder.Create(UnicodeRanges.All)
            //};
            return JsonSerializer.Serialize(obj, options);
        }

        /// <summary>
        ///     JSON字符串序列化成对象。
        /// </summary>
        /// <typeparam name="T">对象类型</typeparam>
        /// <param name="json">JSON字符串</param>
        /// <returns></returns>
        public static T ToObject<T>(this string json)
        {
            //JsonSerializerOptions options = new JsonSerializerOptions()
            //{
            //    WriteIndented = true,                                   //格式化json字符串
            //    AllowTrailingCommas = true,                             //可以结尾有逗号
            //    //IgnoreNullValues = true,                              //可以有空值,转换json去除空值属性
            //    IgnoreReadOnlyProperties = true,                        //忽略只读属性
            //    PropertyNameCaseInsensitive = true,                     //忽略大小写
            //                                                            //PropertyNamingPolicy = JsonNamingPolicy.CamelCase     //命名方式是默认还是CamelCase
            //    Encoder = JavaScriptEncoder.Create(UnicodeRanges.All)
            //};

            JsonSerializerOptions options = new JsonSerializerOptions
            {
                Encoder = JavaScriptEncoder.Create(UnicodeRanges.All),
                WriteIndented = true,
                PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
                AllowTrailingCommas = true
            };
            //设置时间格式
            options.Converters.Add(new DateTimeJsonConverter());
            options.Converters.Add(new DateTimeNullableConverter());
            //设置bool获取格式
            options.Converters.Add(new BooleanJsonConverter());
            //设置数字
            options.Converters.Add(new IntJsonConverter());
            //options.PropertyNamingPolicy = new UpperFirstCaseNamingPolicy();
            options.PropertyNameCaseInsensitive = true; //忽略大小写
            return json == null ? default : JsonSerializer.Deserialize<T>(json, options);
        }

        /// <summary>
        ///     JSON字符串序列化成集合。
        /// </summary>
        /// <typeparam name="T">集合类型</typeparam>
        /// <param name="json">JSON字符串</param>
        /// <returns></returns>
        public static List<T> ToList<T>(this string json)
        {
            //JsonSerializerOptions options = new JsonSerializerOptions()
            //{
            //    WriteIndented = true,                                   //格式化json字符串
            //    AllowTrailingCommas = true,                             //可以结尾有逗号
            //    //IgnoreNullValues = true,                              //可以有空值,转换json去除空值属性
            //    IgnoreReadOnlyProperties = true,                        //忽略只读属性
            //    PropertyNameCaseInsensitive = true,                     //忽略大小写
            //                                                            //PropertyNamingPolicy = JsonNamingPolicy.CamelCase     //命名方式是默认还是CamelCase
            //    Encoder = JavaScriptEncoder.Create(UnicodeRanges.All)
            //};

            JsonSerializerOptions options = new JsonSerializerOptions
            {
                Encoder = JavaScriptEncoder.Create(UnicodeRanges.All),
                WriteIndented = true,
                PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
                AllowTrailingCommas = true
            };
            //设置时间格式
            options.Converters.Add(new DateTimeJsonConverter());
            options.Converters.Add(new DateTimeNullableConverter());
            //设置bool获取格式
            options.Converters.Add(new BooleanJsonConverter());
            //设置数字
            options.Converters.Add(new IntJsonConverter());
            //options.PropertyNamingPolicy = new UpperFirstCaseNamingPolicy();
            options.PropertyNameCaseInsensitive = true; //忽略大小写
            return json == null ? null : JsonSerializer.Deserialize<List<T>>(json, options);
        }

        /// <summary>
        ///     JSON字符串序列化成DataTable。
        /// </summary>
        /// <param name="json">JSON字符串</param>
        /// <returns></returns>
        public static DataTable ToTable(this string json)
        {
            return json == null ? null : JsonSerializer.Deserialize<DataTable>(json);
        }
    }
}