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

namespace YLErp.Serialization
{
    /// <summary>
    /// 兼容Net Framework 如果为null，转为默认值
    /// </summary>
    public class CustomIntConvert : JsonConverter<int>
    {
        public override int Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
        {
            if (reader.TokenType == JsonTokenType.String || reader.TokenType == JsonTokenType.Null)
            {
                var str = reader.GetString();
                if (string.IsNullOrWhiteSpace(str) || str.Trim() == "null" || str == "NaN")
                {
                    return 0;
                }

                if (int.TryParse(str, out var d))
                {
                    return d;
                }
            }

            return reader.GetInt32();
        }

        public override void Write(Utf8JsonWriter writer, int value, JsonSerializerOptions options)
        {
            writer.WriteNumberValue(value);
        }

        public static readonly CustomIntConvert Default;

        static CustomIntConvert()
        {
            Default = new CustomIntConvert();
        }
    }

    /// <summary>
    /// 兼容Net Framework 如果为null，转为默认值
    /// </summary>
    public class CustomBoolConvert : JsonConverter<bool>
    {
        public override bool Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
        {
            if (reader.TokenType == JsonTokenType.String|| reader.TokenType == JsonTokenType.Null)
            {
                var str = reader.GetString();
                if (string.IsNullOrWhiteSpace(str) || str.Trim() == "null" || str == "NaN")
                {
                    return false;
                }
                if (bool.TryParse(str, out var d))
                {
                    return d;
                }
            }

            return reader.GetBoolean();
        }

        public override void Write(Utf8JsonWriter writer, bool value, JsonSerializerOptions options)
        {
            writer.WriteBooleanValue(value);
        }

        public static readonly CustomBoolConvert Default;

        static CustomBoolConvert()
        {
            Default = new CustomBoolConvert();
        }
    }
}