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

namespace ServiceLib.Common;

public class JsonUtils
{
    private static readonly string _tag = "JsonUtils";

    /// <summary>
    /// DeepCopy
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="obj"></param>
    /// <returns></returns>
    public static T DeepCopy<T>(T obj)
    {
        return Deserialize<T>(Serialize(obj, false))!;
    }

    /// <summary>
    /// Deserialize to object
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="strJson"></param>
    /// <returns></returns>
    public static T? Deserialize<T>(string? strJson)
    {
        try
        {
            if (string.IsNullOrWhiteSpace(strJson))
            {
                return default;
            }
            var options = new JsonSerializerOptions
            {
                PropertyNameCaseInsensitive = true
            };
            return JsonSerializer.Deserialize<T>(strJson, options);
        }
        catch
        {
            return default;
        }
    }

    /// <summary>
    /// parse
    /// </summary>
    /// <param name="strJson"></param>
    /// <returns></returns>
    public static JsonNode? ParseJson(string strJson)
    {
        try
        {
            if (string.IsNullOrWhiteSpace(strJson))
            {
                return null;
            }
            return JsonNode.Parse(strJson);
        }
        catch
        {
            //SaveLog(ex.Message, ex);
            return null;
        }
    }

    /// <summary>
    /// Serialize Object to Json string
    /// </summary>
    /// <param name="obj"></param>
    /// <param name="indented"></param>
    /// <param name="nullValue"></param>
    /// <returns></returns>
    public static string Serialize(object? obj, bool indented = true, bool nullValue = false)
    {
        var result = string.Empty;
        try
        {
            if (obj == null)
            {
                return result;
            }
            var options = new JsonSerializerOptions
            {
                WriteIndented = indented,
                DefaultIgnoreCondition = nullValue ? JsonIgnoreCondition.Never : JsonIgnoreCondition.WhenWritingNull,
                Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping
            };
            result = JsonSerializer.Serialize(obj, options);
        }
        catch (Exception ex)
        {
            Logging.SaveLog(_tag, ex);
        }
        return result;
    }

    /// <summary>
    /// Serialize Object to Json string
    /// </summary>
    /// <param name="obj"></param>
    /// <param name="options"></param>
    /// <returns></returns>
    public static string Serialize(object? obj, JsonSerializerOptions options)
    {
        var result = string.Empty;
        try
        {
            if (obj == null)
            {
                return result;
            }
            result = JsonSerializer.Serialize(obj, options);
        }
        catch (Exception ex)
        {
            Logging.SaveLog(_tag, ex);
        }
        return result;
    }

    /// <summary>
    /// SerializeToNode
    /// </summary>
    /// <param name="obj"></param>
    /// <returns></returns>
    public static JsonNode? SerializeToNode(object? obj) => JsonSerializer.SerializeToNode(obj);
}