using System.Text;
using System.Text.Json;
using System.Text.Json.Nodes;
using System.Text.Json.Serialization;

namespace OMS.NET.Common
{
    public class Point
    {
        public double X { get; set; }
        public double Y { get; set; }
    }

    public class Util
    {
        public static readonly JsonSerializerOptions options = new()
        {
            ReadCommentHandling = JsonCommentHandling.Skip, //允许注释
            AllowTrailingCommas = true,//允许尾随逗号
            //PropertyNamingPolicy = new InstructNamingPolicy(), // 属性名为定制转换
            DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull, // 忽略 null 值
            WriteIndented = true, // 美化输出
            PropertyNameCaseInsensitive = true,//属性名忽略大小写
        };

        public static string ObjToBase64(object obj)
        {
            string utf8 = JsonSerializer.Serialize(obj, options);
            return Convert.ToBase64String(Encoding.UTF8.GetBytes(utf8));
        }

        public static string JsonToBase64(string json)
        {
            return Convert.ToBase64String(Encoding.UTF8.GetBytes(json));
        }

        public static string Base64ToJson(string base64)
        {
            return Encoding.UTF8.GetString(Convert.FromBase64String(base64));
        }

        // public static JsonNode? JsonNodeFromJson(string json)
        // {
        //     return JsonNode.Parse(json);
        // }

        //===========================================================

        public static List<Point> PointsFromBase64(string base64)
        {
            string utf8 = Base64ToJson(base64);
            return PointsFromJson(utf8);
        }

        public static List<Point> PointsFromJson(string json)
        {
            return JsonSerializer.Deserialize<List<Point>>(json, options) ?? new List<Point>();
        }

        public static Point PointFromBase64(string base64)
        {
            string utf8 = Base64ToJson(base64);
            return PointFromJson(utf8);
        }

        public static Point PointFromJson(string json)
        {
            return JsonSerializer.Deserialize<Point>(json, options) ?? throw new Exception("转化point类型失败:" + json);
        }
    }
}